/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/seq-mthreaded-reduced/pals_opt-floodmax.4.1.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 07:22:43,151 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 07:22:43,153 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 07:22:43,181 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 07:22:43,182 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 07:22:43,182 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 07:22:43,183 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 07:22:43,185 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 07:22:43,186 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 07:22:43,187 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 07:22:43,187 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 07:22:43,188 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 07:22:43,188 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 07:22:43,189 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 07:22:43,190 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 07:22:43,191 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 07:22:43,191 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 07:22:43,192 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 07:22:43,193 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 07:22:43,199 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 07:22:43,247 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 07:22:43,253 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 07:22:43,254 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 07:22:43,255 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 07:22:43,256 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 07:22:43,257 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 07:22:43,257 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 07:22:43,257 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 07:22:43,258 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 07:22:43,259 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 07:22:43,259 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 07:22:43,267 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 07:22:43,269 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 07:22:43,270 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 07:22:43,272 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 07:22:43,272 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 07:22:43,273 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 07:22:43,273 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 07:22:43,273 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 07:22:43,274 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 07:22:43,275 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 07:22:43,278 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 07:22:43,302 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 07:22:43,302 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 07:22:43,302 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 07:22:43,302 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 07:22:43,303 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 07:22:43,303 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 07:22:43,304 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 07:22:43,304 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 07:22:43,304 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 07:22:43,304 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 07:22:43,304 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 07:22:43,304 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 07:22:43,304 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 07:22:43,304 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 07:22:43,304 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 07:22:43,304 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 07:22:43,304 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 07:22:43,305 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 07:22:43,305 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 07:22:43,305 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 07:22:43,305 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 07:22:43,305 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 07:22:43,305 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 07:22:43,305 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 07:22:43,305 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 07:22:43,305 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 07:22:43,305 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 07:22:43,305 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-01-10 07:22:43,306 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-01-10 07:22:43,306 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 07:22:43,306 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 07:22:43,306 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 07:22:43,306 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 07:22:43,306 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 07:22:43,531 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 07:22:43,567 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 07:22:43,569 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 07:22:43,570 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 07:22:43,571 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 07:22:43,572 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.1.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c [2022-01-10 07:22:43,642 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7fbfd0350/3392ce9f8d22404f9e0418f4551a3c6c/FLAG0971ea2f0 [2022-01-10 07:22:44,111 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 07:22:44,112 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.1.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c [2022-01-10 07:22:44,132 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7fbfd0350/3392ce9f8d22404f9e0418f4551a3c6c/FLAG0971ea2f0 [2022-01-10 07:22:44,659 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7fbfd0350/3392ce9f8d22404f9e0418f4551a3c6c [2022-01-10 07:22:44,662 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 07:22:44,664 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 07:22:44,665 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 07:22:44,666 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 07:22:44,669 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 07:22:44,669 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 07:22:44" (1/1) ... [2022-01-10 07:22:44,670 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36992fdd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:22:44, skipping insertion in model container [2022-01-10 07:22:44,673 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 07:22:44" (1/1) ... [2022-01-10 07:22:44,685 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 07:22:44,766 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 07:22:45,019 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.1.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c[13338,13351] [2022-01-10 07:22:45,071 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 07:22:45,092 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 07:22:45,155 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.1.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c[13338,13351] [2022-01-10 07:22:45,192 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 07:22:45,207 INFO L208 MainTranslator]: Completed translation [2022-01-10 07:22:45,208 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:22:45 WrapperNode [2022-01-10 07:22:45,208 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 07:22:45,209 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 07:22:45,209 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 07:22:45,209 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 07:22:45,215 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:22:45" (1/1) ... [2022-01-10 07:22:45,231 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:22:45" (1/1) ... [2022-01-10 07:22:45,274 INFO L137 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1304 [2022-01-10 07:22:45,274 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 07:22:45,275 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 07:22:45,275 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 07:22:45,275 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 07:22:45,281 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:22:45" (1/1) ... [2022-01-10 07:22:45,281 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:22:45" (1/1) ... [2022-01-10 07:22:45,286 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:22:45" (1/1) ... [2022-01-10 07:22:45,286 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:22:45" (1/1) ... [2022-01-10 07:22:45,298 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:22:45" (1/1) ... [2022-01-10 07:22:45,309 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:22:45" (1/1) ... [2022-01-10 07:22:45,312 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:22:45" (1/1) ... [2022-01-10 07:22:45,320 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 07:22:45,321 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 07:22:45,321 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 07:22:45,321 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 07:22:45,343 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:22:45" (1/1) ... [2022-01-10 07:22:45,357 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 07:22:45,369 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 07:22:45,394 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 07:22:45,414 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 07:22:45,420 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 07:22:45,421 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 07:22:45,421 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 07:22:45,421 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 07:22:45,533 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 07:22:45,534 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 07:22:46,483 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 07:22:46,500 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 07:22:46,501 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-10 07:22:46,503 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 07:22:46 BoogieIcfgContainer [2022-01-10 07:22:46,503 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 07:22:46,506 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 07:22:46,506 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 07:22:46,509 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 07:22:46,509 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 07:22:44" (1/3) ... [2022-01-10 07:22:46,510 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73a5f08b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 07:22:46, skipping insertion in model container [2022-01-10 07:22:46,510 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:22:45" (2/3) ... [2022-01-10 07:22:46,510 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73a5f08b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 07:22:46, skipping insertion in model container [2022-01-10 07:22:46,511 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 07:22:46" (3/3) ... [2022-01-10 07:22:46,512 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.4.1.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c [2022-01-10 07:22:46,516 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 07:22:46,517 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 07:22:46,607 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 07:22:46,616 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 07:22:46,616 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 07:22:46,647 INFO L276 IsEmpty]: Start isEmpty. Operand has 330 states, 328 states have (on average 1.7896341463414633) internal successors, (587), 329 states have internal predecessors, (587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:22:46,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-01-10 07:22:46,670 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:22:46,671 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:22:46,672 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:22:46,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:22:46,676 INFO L85 PathProgramCache]: Analyzing trace with hash 767655198, now seen corresponding path program 1 times [2022-01-10 07:22:46,689 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:22:46,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [281299830] [2022-01-10 07:22:46,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:22:46,690 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:22:46,691 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:22:46,703 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 07:22:46,708 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 07:22:46,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:22:46,945 INFO L263 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:22:46,952 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:22:47,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:22:47,258 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:22:47,258 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:22:47,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [281299830] [2022-01-10 07:22:47,259 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [281299830] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:22:47,259 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:22:47,259 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:22:47,261 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889574390] [2022-01-10 07:22:47,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:22:47,265 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:22:47,265 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:22:47,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:22:47,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:22:47,288 INFO L87 Difference]: Start difference. First operand has 330 states, 328 states have (on average 1.7896341463414633) internal successors, (587), 329 states have internal predecessors, (587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:22:47,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:22:47,374 INFO L93 Difference]: Finished difference Result 616 states and 1067 transitions. [2022-01-10 07:22:47,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:22:47,376 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2022-01-10 07:22:47,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:22:47,388 INFO L225 Difference]: With dead ends: 616 [2022-01-10 07:22:47,388 INFO L226 Difference]: Without dead ends: 461 [2022-01-10 07:22:47,391 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 104 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 07:22:47,394 INFO L933 BasicCegarLoop]: 587 mSDtfsCounter, 244 mSDsluCounter, 521 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 244 SdHoareTripleChecker+Valid, 1108 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:22:47,395 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [244 Valid, 1108 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:22:47,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 461 states. [2022-01-10 07:22:47,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 461 to 459. [2022-01-10 07:22:47,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 459 states, 458 states have (on average 1.6746724890829694) internal successors, (767), 458 states have internal predecessors, (767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:22:47,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 459 states to 459 states and 767 transitions. [2022-01-10 07:22:47,448 INFO L78 Accepts]: Start accepts. Automaton has 459 states and 767 transitions. Word has length 106 [2022-01-10 07:22:47,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:22:47,449 INFO L470 AbstractCegarLoop]: Abstraction has 459 states and 767 transitions. [2022-01-10 07:22:47,449 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:22:47,449 INFO L276 IsEmpty]: Start isEmpty. Operand 459 states and 767 transitions. [2022-01-10 07:22:47,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-01-10 07:22:47,453 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:22:47,453 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:22:47,467 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-01-10 07:22:47,664 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 07:22:47,664 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:22:47,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:22:47,665 INFO L85 PathProgramCache]: Analyzing trace with hash -383361066, now seen corresponding path program 1 times [2022-01-10 07:22:47,666 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:22:47,667 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [819207393] [2022-01-10 07:22:47,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:22:47,667 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:22:47,667 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:22:47,668 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 07:22:47,669 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 07:22:47,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:22:47,877 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 07:22:47,880 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:22:48,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:22:48,084 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:22:48,084 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:22:48,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [819207393] [2022-01-10 07:22:48,084 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [819207393] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:22:48,084 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:22:48,084 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:22:48,084 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140667020] [2022-01-10 07:22:48,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:22:48,085 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 07:22:48,085 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:22:48,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 07:22:48,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 07:22:48,086 INFO L87 Difference]: Start difference. First operand 459 states and 767 transitions. Second operand has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:22:48,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:22:48,183 INFO L93 Difference]: Finished difference Result 1345 states and 2246 transitions. [2022-01-10 07:22:48,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 07:22:48,183 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2022-01-10 07:22:48,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:22:48,186 INFO L225 Difference]: With dead ends: 1345 [2022-01-10 07:22:48,186 INFO L226 Difference]: Without dead ends: 897 [2022-01-10 07:22:48,188 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 106 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 07:22:48,188 INFO L933 BasicCegarLoop]: 530 mSDtfsCounter, 1503 mSDsluCounter, 514 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1503 SdHoareTripleChecker+Valid, 1044 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:22:48,189 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1503 Valid, 1044 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:22:48,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 897 states. [2022-01-10 07:22:48,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 897 to 895. [2022-01-10 07:22:48,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 895 states, 894 states have (on average 1.6633109619686801) internal successors, (1487), 894 states have internal predecessors, (1487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:22:48,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 895 states to 895 states and 1487 transitions. [2022-01-10 07:22:48,217 INFO L78 Accepts]: Start accepts. Automaton has 895 states and 1487 transitions. Word has length 109 [2022-01-10 07:22:48,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:22:48,217 INFO L470 AbstractCegarLoop]: Abstraction has 895 states and 1487 transitions. [2022-01-10 07:22:48,218 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:22:48,218 INFO L276 IsEmpty]: Start isEmpty. Operand 895 states and 1487 transitions. [2022-01-10 07:22:48,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-10 07:22:48,221 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:22:48,221 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:22:48,230 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 07:22:48,428 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 07:22:48,429 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:22:48,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:22:48,429 INFO L85 PathProgramCache]: Analyzing trace with hash 242514857, now seen corresponding path program 1 times [2022-01-10 07:22:48,430 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:22:48,430 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [740771736] [2022-01-10 07:22:48,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:22:48,430 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:22:48,430 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:22:48,431 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 07:22:48,433 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 07:22:48,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:22:48,579 INFO L263 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:22:48,581 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:22:48,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:22:48,718 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:22:48,718 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:22:48,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [740771736] [2022-01-10 07:22:48,719 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [740771736] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:22:48,719 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:22:48,719 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:22:48,721 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177413348] [2022-01-10 07:22:48,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:22:48,722 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:22:48,722 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:22:48,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:22:48,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:22:48,723 INFO L87 Difference]: Start difference. First operand 895 states and 1487 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:22:48,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:22:48,754 INFO L93 Difference]: Finished difference Result 1412 states and 2362 transitions. [2022-01-10 07:22:48,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:22:48,755 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2022-01-10 07:22:48,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:22:48,759 INFO L225 Difference]: With dead ends: 1412 [2022-01-10 07:22:48,759 INFO L226 Difference]: Without dead ends: 1128 [2022-01-10 07:22:48,760 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 108 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 07:22:48,762 INFO L933 BasicCegarLoop]: 732 mSDtfsCounter, 226 mSDsluCounter, 501 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 1233 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:22:48,763 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [226 Valid, 1233 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:22:48,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1128 states. [2022-01-10 07:22:48,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1128 to 1126. [2022-01-10 07:22:48,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1126 states, 1125 states have (on average 1.6675555555555555) internal successors, (1876), 1125 states have internal predecessors, (1876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:22:48,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1126 states to 1126 states and 1876 transitions. [2022-01-10 07:22:48,792 INFO L78 Accepts]: Start accepts. Automaton has 1126 states and 1876 transitions. Word has length 110 [2022-01-10 07:22:48,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:22:48,793 INFO L470 AbstractCegarLoop]: Abstraction has 1126 states and 1876 transitions. [2022-01-10 07:22:48,793 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:22:48,793 INFO L276 IsEmpty]: Start isEmpty. Operand 1126 states and 1876 transitions. [2022-01-10 07:22:48,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-10 07:22:48,795 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:22:48,795 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:22:48,802 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 07:22:49,002 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 07:22:49,002 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:22:49,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:22:49,003 INFO L85 PathProgramCache]: Analyzing trace with hash 1894064941, now seen corresponding path program 1 times [2022-01-10 07:22:49,004 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:22:49,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1549418179] [2022-01-10 07:22:49,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:22:49,004 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:22:49,004 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:22:49,005 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 07:22:49,007 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 07:22:49,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:22:49,117 INFO L263 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:22:49,119 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:22:49,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:22:49,250 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:22:49,250 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:22:49,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1549418179] [2022-01-10 07:22:49,250 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1549418179] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:22:49,251 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:22:49,251 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:22:49,251 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965146111] [2022-01-10 07:22:49,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:22:49,251 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:22:49,251 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:22:49,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:22:49,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:22:49,252 INFO L87 Difference]: Start difference. First operand 1126 states and 1876 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:22:49,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:22:49,300 INFO L93 Difference]: Finished difference Result 2153 states and 3609 transitions. [2022-01-10 07:22:49,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:22:49,301 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2022-01-10 07:22:49,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:22:49,305 INFO L225 Difference]: With dead ends: 2153 [2022-01-10 07:22:49,305 INFO L226 Difference]: Without dead ends: 1384 [2022-01-10 07:22:49,306 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 108 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 07:22:49,307 INFO L933 BasicCegarLoop]: 554 mSDtfsCounter, 234 mSDsluCounter, 516 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 1070 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:22:49,307 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [234 Valid, 1070 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:22:49,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1384 states. [2022-01-10 07:22:49,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1384 to 1368. [2022-01-10 07:22:49,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1368 states, 1367 states have (on average 1.667885881492319) internal successors, (2280), 1367 states have internal predecessors, (2280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:22:49,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1368 states to 1368 states and 2280 transitions. [2022-01-10 07:22:49,369 INFO L78 Accepts]: Start accepts. Automaton has 1368 states and 2280 transitions. Word has length 110 [2022-01-10 07:22:49,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:22:49,370 INFO L470 AbstractCegarLoop]: Abstraction has 1368 states and 2280 transitions. [2022-01-10 07:22:49,370 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:22:49,370 INFO L276 IsEmpty]: Start isEmpty. Operand 1368 states and 2280 transitions. [2022-01-10 07:22:49,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-01-10 07:22:49,371 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:22:49,371 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:22:49,391 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2022-01-10 07:22:49,578 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 07:22:49,579 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:22:49,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:22:49,579 INFO L85 PathProgramCache]: Analyzing trace with hash 1281585138, now seen corresponding path program 1 times [2022-01-10 07:22:49,580 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:22:49,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1609678799] [2022-01-10 07:22:49,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:22:49,580 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:22:49,580 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:22:49,581 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 07:22:49,584 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 07:22:49,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:22:49,698 INFO L263 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 07:22:49,701 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:22:49,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:22:49,852 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:22:49,852 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:22:49,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1609678799] [2022-01-10 07:22:49,853 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1609678799] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:22:49,853 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:22:49,853 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:22:49,853 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183027470] [2022-01-10 07:22:49,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:22:49,853 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 07:22:49,853 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:22:49,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 07:22:49,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 07:22:49,854 INFO L87 Difference]: Start difference. First operand 1368 states and 2280 transitions. Second operand has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:22:49,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:22:49,980 INFO L93 Difference]: Finished difference Result 4046 states and 6745 transitions. [2022-01-10 07:22:49,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 07:22:49,981 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 111 [2022-01-10 07:22:49,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:22:49,993 INFO L225 Difference]: With dead ends: 4046 [2022-01-10 07:22:49,993 INFO L226 Difference]: Without dead ends: 2690 [2022-01-10 07:22:49,996 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 108 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 07:22:49,997 INFO L933 BasicCegarLoop]: 756 mSDtfsCounter, 1266 mSDsluCounter, 514 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1266 SdHoareTripleChecker+Valid, 1270 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:22:49,997 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1266 Valid, 1270 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:22:50,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2690 states. [2022-01-10 07:22:50,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2690 to 2688. [2022-01-10 07:22:50,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2688 states, 2687 states have (on average 1.6590993673241534) internal successors, (4458), 2687 states have internal predecessors, (4458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:22:50,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2688 states to 2688 states and 4458 transitions. [2022-01-10 07:22:50,119 INFO L78 Accepts]: Start accepts. Automaton has 2688 states and 4458 transitions. Word has length 111 [2022-01-10 07:22:50,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:22:50,119 INFO L470 AbstractCegarLoop]: Abstraction has 2688 states and 4458 transitions. [2022-01-10 07:22:50,119 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:22:50,119 INFO L276 IsEmpty]: Start isEmpty. Operand 2688 states and 4458 transitions. [2022-01-10 07:22:50,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-01-10 07:22:50,121 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:22:50,121 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:22:50,136 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 07:22:50,329 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 07:22:50,330 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:22:50,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:22:50,331 INFO L85 PathProgramCache]: Analyzing trace with hash -647295577, now seen corresponding path program 1 times [2022-01-10 07:22:50,331 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:22:50,331 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1746824602] [2022-01-10 07:22:50,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:22:50,331 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:22:50,331 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:22:50,340 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 07:22:50,342 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 07:22:50,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:22:50,471 INFO L263 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:22:50,474 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:22:50,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:22:50,565 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:22:50,565 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:22:50,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1746824602] [2022-01-10 07:22:50,565 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1746824602] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:22:50,565 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:22:50,566 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:22:50,566 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163103531] [2022-01-10 07:22:50,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:22:50,566 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:22:50,566 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:22:50,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:22:50,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:22:50,567 INFO L87 Difference]: Start difference. First operand 2688 states and 4458 transitions. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:22:50,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:22:50,688 INFO L93 Difference]: Finished difference Result 8007 states and 13281 transitions. [2022-01-10 07:22:50,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:22:50,689 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 113 [2022-01-10 07:22:50,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:22:50,703 INFO L225 Difference]: With dead ends: 8007 [2022-01-10 07:22:50,703 INFO L226 Difference]: Without dead ends: 5348 [2022-01-10 07:22:50,707 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 111 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 07:22:50,710 INFO L933 BasicCegarLoop]: 1068 mSDtfsCounter, 526 mSDsluCounter, 533 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 526 SdHoareTripleChecker+Valid, 1601 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:22:50,711 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [526 Valid, 1601 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:22:50,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5348 states. [2022-01-10 07:22:50,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5348 to 2702. [2022-01-10 07:22:50,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2702 states, 2701 states have (on average 1.6567937800814514) internal successors, (4475), 2701 states have internal predecessors, (4475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:22:50,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2702 states to 2702 states and 4475 transitions. [2022-01-10 07:22:50,853 INFO L78 Accepts]: Start accepts. Automaton has 2702 states and 4475 transitions. Word has length 113 [2022-01-10 07:22:50,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:22:50,853 INFO L470 AbstractCegarLoop]: Abstraction has 2702 states and 4475 transitions. [2022-01-10 07:22:50,853 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:22:50,854 INFO L276 IsEmpty]: Start isEmpty. Operand 2702 states and 4475 transitions. [2022-01-10 07:22:50,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-01-10 07:22:50,857 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:22:50,857 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:22:50,868 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 07:22:51,067 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 07:22:51,068 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:22:51,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:22:51,069 INFO L85 PathProgramCache]: Analyzing trace with hash -1917868138, now seen corresponding path program 1 times [2022-01-10 07:22:51,069 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:22:51,069 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [598484573] [2022-01-10 07:22:51,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:22:51,069 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:22:51,070 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:22:51,070 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 07:22:51,074 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 07:22:51,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:22:51,217 INFO L263 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:22:51,219 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:22:51,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:22:51,616 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:22:51,616 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:22:51,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [598484573] [2022-01-10 07:22:51,616 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [598484573] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:22:51,617 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:22:51,617 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:22:51,617 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081906698] [2022-01-10 07:22:51,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:22:51,617 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:22:51,617 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:22:51,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:22:51,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:22:51,618 INFO L87 Difference]: Start difference. First operand 2702 states and 4475 transitions. Second operand has 5 states, 5 states have (on average 23.0) internal successors, (115), 4 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:22:51,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:22:51,974 INFO L93 Difference]: Finished difference Result 5393 states and 8991 transitions. [2022-01-10 07:22:51,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:22:51,975 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.0) internal successors, (115), 4 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2022-01-10 07:22:51,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:22:51,992 INFO L225 Difference]: With dead ends: 5393 [2022-01-10 07:22:51,993 INFO L226 Difference]: Without dead ends: 4382 [2022-01-10 07:22:51,995 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 111 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 07:22:51,996 INFO L933 BasicCegarLoop]: 708 mSDtfsCounter, 494 mSDsluCounter, 1083 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 494 SdHoareTripleChecker+Valid, 1791 SdHoareTripleChecker+Invalid, 261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 197 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:22:51,996 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [494 Valid, 1791 Invalid, 261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 63 Invalid, 0 Unknown, 197 Unchecked, 0.1s Time] [2022-01-10 07:22:52,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4382 states. [2022-01-10 07:22:52,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4382 to 4373. [2022-01-10 07:22:52,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4373 states, 4372 states have (on average 1.6683440073193048) internal successors, (7294), 4372 states have internal predecessors, (7294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:22:52,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4373 states to 4373 states and 7294 transitions. [2022-01-10 07:22:52,238 INFO L78 Accepts]: Start accepts. Automaton has 4373 states and 7294 transitions. Word has length 115 [2022-01-10 07:22:52,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:22:52,238 INFO L470 AbstractCegarLoop]: Abstraction has 4373 states and 7294 transitions. [2022-01-10 07:22:52,239 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.0) internal successors, (115), 4 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:22:52,239 INFO L276 IsEmpty]: Start isEmpty. Operand 4373 states and 7294 transitions. [2022-01-10 07:22:52,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-01-10 07:22:52,242 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:22:52,242 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:22:52,252 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 07:22:52,452 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 07:22:52,452 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:22:52,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:22:52,453 INFO L85 PathProgramCache]: Analyzing trace with hash -785471343, now seen corresponding path program 1 times [2022-01-10 07:22:52,454 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:22:52,454 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [865300147] [2022-01-10 07:22:52,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:22:52,454 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:22:52,454 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:22:52,459 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 07:22:52,464 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 07:22:52,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:22:52,612 INFO L263 TraceCheckSpWp]: Trace formula consists of 316 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 07:22:52,614 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:22:52,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:22:52,857 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:22:52,857 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:22:52,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [865300147] [2022-01-10 07:22:52,857 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [865300147] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:22:52,857 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:22:52,857 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:22:52,858 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853225152] [2022-01-10 07:22:52,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:22:52,858 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 07:22:52,858 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:22:52,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 07:22:52,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 07:22:52,859 INFO L87 Difference]: Start difference. First operand 4373 states and 7294 transitions. Second operand has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:22:53,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:22:53,270 INFO L93 Difference]: Finished difference Result 12354 states and 20604 transitions. [2022-01-10 07:22:53,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 07:22:53,270 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2022-01-10 07:22:53,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:22:53,302 INFO L225 Difference]: With dead ends: 12354 [2022-01-10 07:22:53,303 INFO L226 Difference]: Without dead ends: 8022 [2022-01-10 07:22:53,311 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 112 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 07:22:53,311 INFO L933 BasicCegarLoop]: 751 mSDtfsCounter, 1256 mSDsluCounter, 514 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1256 SdHoareTripleChecker+Valid, 1265 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:22:53,312 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1256 Valid, 1265 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:22:53,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8022 states. [2022-01-10 07:22:53,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8022 to 8020. [2022-01-10 07:22:53,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8020 states, 8019 states have (on average 1.6589350293053997) internal successors, (13303), 8019 states have internal predecessors, (13303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:22:53,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8020 states to 8020 states and 13303 transitions. [2022-01-10 07:22:53,682 INFO L78 Accepts]: Start accepts. Automaton has 8020 states and 13303 transitions. Word has length 115 [2022-01-10 07:22:53,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:22:53,683 INFO L470 AbstractCegarLoop]: Abstraction has 8020 states and 13303 transitions. [2022-01-10 07:22:53,683 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:22:53,683 INFO L276 IsEmpty]: Start isEmpty. Operand 8020 states and 13303 transitions. [2022-01-10 07:22:53,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-01-10 07:22:53,687 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:22:53,687 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:22:53,696 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 07:22:53,895 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 07:22:53,895 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:22:53,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:22:53,896 INFO L85 PathProgramCache]: Analyzing trace with hash -1818983452, now seen corresponding path program 1 times [2022-01-10 07:22:53,896 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:22:53,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [374210596] [2022-01-10 07:22:53,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:22:53,896 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:22:53,896 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:22:53,897 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 07:22:53,899 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 07:22:53,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:22:53,999 INFO L263 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 07:22:54,000 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:22:54,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:22:54,145 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:22:54,145 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:22:54,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [374210596] [2022-01-10 07:22:54,145 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [374210596] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:22:54,145 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:22:54,145 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:22:54,145 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876406533] [2022-01-10 07:22:54,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:22:54,146 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 07:22:54,146 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:22:54,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 07:22:54,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 07:22:54,147 INFO L87 Difference]: Start difference. First operand 8020 states and 13303 transitions. Second operand has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:22:54,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:22:54,766 INFO L93 Difference]: Finished difference Result 27621 states and 45642 transitions. [2022-01-10 07:22:54,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:22:54,766 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2022-01-10 07:22:54,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:22:54,803 INFO L225 Difference]: With dead ends: 27621 [2022-01-10 07:22:54,803 INFO L226 Difference]: Without dead ends: 20145 [2022-01-10 07:22:54,816 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 112 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 07:22:54,817 INFO L933 BasicCegarLoop]: 1225 mSDtfsCounter, 1246 mSDsluCounter, 1461 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1246 SdHoareTripleChecker+Valid, 2686 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:22:54,817 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1246 Valid, 2686 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:22:54,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20145 states. [2022-01-10 07:22:55,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20145 to 8481. [2022-01-10 07:22:55,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8481 states, 8480 states have (on average 1.6603773584905661) internal successors, (14080), 8480 states have internal predecessors, (14080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:22:55,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8481 states to 8481 states and 14080 transitions. [2022-01-10 07:22:55,496 INFO L78 Accepts]: Start accepts. Automaton has 8481 states and 14080 transitions. Word has length 115 [2022-01-10 07:22:55,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:22:55,497 INFO L470 AbstractCegarLoop]: Abstraction has 8481 states and 14080 transitions. [2022-01-10 07:22:55,497 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:22:55,497 INFO L276 IsEmpty]: Start isEmpty. Operand 8481 states and 14080 transitions. [2022-01-10 07:22:55,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-01-10 07:22:55,506 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:22:55,506 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:22:55,518 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Ended with exit code 0 [2022-01-10 07:22:55,715 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 07:22:55,716 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:22:55,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:22:55,716 INFO L85 PathProgramCache]: Analyzing trace with hash 1470512179, now seen corresponding path program 1 times [2022-01-10 07:22:55,717 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:22:55,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1934203963] [2022-01-10 07:22:55,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:22:55,717 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:22:55,717 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:22:55,718 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 07:22:55,721 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 07:22:55,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:22:55,845 INFO L263 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:22:55,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:22:56,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:22:56,014 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:22:56,014 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:22:56,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1934203963] [2022-01-10 07:22:56,014 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1934203963] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:22:56,014 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:22:56,014 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:22:56,014 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636474896] [2022-01-10 07:22:56,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:22:56,016 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:22:56,016 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:22:56,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:22:56,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:22:56,017 INFO L87 Difference]: Start difference. First operand 8481 states and 14080 transitions. Second operand has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:22:56,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:22:56,545 INFO L93 Difference]: Finished difference Result 20996 states and 34972 transitions. [2022-01-10 07:22:56,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:22:56,545 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 117 [2022-01-10 07:22:56,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:22:56,570 INFO L225 Difference]: With dead ends: 20996 [2022-01-10 07:22:56,571 INFO L226 Difference]: Without dead ends: 14352 [2022-01-10 07:22:56,578 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 115 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 07:22:56,579 INFO L933 BasicCegarLoop]: 558 mSDtfsCounter, 214 mSDsluCounter, 517 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 1075 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:22:56,579 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [214 Valid, 1075 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:22:56,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14352 states. [2022-01-10 07:22:57,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14352 to 14350. [2022-01-10 07:22:57,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14350 states, 14349 states have (on average 1.6596278486305667) internal successors, (23814), 14349 states have internal predecessors, (23814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:22:57,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14350 states to 14350 states and 23814 transitions. [2022-01-10 07:22:57,129 INFO L78 Accepts]: Start accepts. Automaton has 14350 states and 23814 transitions. Word has length 117 [2022-01-10 07:22:57,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:22:57,130 INFO L470 AbstractCegarLoop]: Abstraction has 14350 states and 23814 transitions. [2022-01-10 07:22:57,130 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:22:57,130 INFO L276 IsEmpty]: Start isEmpty. Operand 14350 states and 23814 transitions. [2022-01-10 07:22:57,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-01-10 07:22:57,136 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:22:57,136 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:22:57,161 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 07:22:57,342 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 07:22:57,343 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:22:57,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:22:57,343 INFO L85 PathProgramCache]: Analyzing trace with hash -1731209056, now seen corresponding path program 1 times [2022-01-10 07:22:57,344 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:22:57,344 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [21537355] [2022-01-10 07:22:57,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:22:57,344 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:22:57,344 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:22:57,345 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 07:22:57,347 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 07:22:57,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:22:57,482 INFO L263 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 07:22:57,484 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:22:57,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:22:57,704 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:22:57,704 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:22:57,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [21537355] [2022-01-10 07:22:57,704 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [21537355] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:22:57,704 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:22:57,704 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:22:57,704 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383818698] [2022-01-10 07:22:57,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:22:57,705 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 07:22:57,705 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:22:57,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 07:22:57,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 07:22:57,706 INFO L87 Difference]: Start difference. First operand 14350 states and 23814 transitions. Second operand has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:22:58,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:22:58,884 INFO L93 Difference]: Finished difference Result 42022 states and 69762 transitions. [2022-01-10 07:22:58,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 07:22:58,885 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 120 [2022-01-10 07:22:58,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:22:59,018 INFO L225 Difference]: With dead ends: 42022 [2022-01-10 07:22:59,018 INFO L226 Difference]: Without dead ends: 27907 [2022-01-10 07:22:59,049 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 117 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 07:22:59,050 INFO L933 BasicCegarLoop]: 538 mSDtfsCounter, 1414 mSDsluCounter, 514 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1414 SdHoareTripleChecker+Valid, 1052 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:22:59,050 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1414 Valid, 1052 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 07:22:59,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27907 states. [2022-01-10 07:23:00,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27907 to 27905. [2022-01-10 07:23:00,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27905 states, 27904 states have (on average 1.652809633027523) internal successors, (46120), 27904 states have internal predecessors, (46120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:23:00,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27905 states to 27905 states and 46120 transitions. [2022-01-10 07:23:00,479 INFO L78 Accepts]: Start accepts. Automaton has 27905 states and 46120 transitions. Word has length 120 [2022-01-10 07:23:00,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:23:00,479 INFO L470 AbstractCegarLoop]: Abstraction has 27905 states and 46120 transitions. [2022-01-10 07:23:00,479 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:23:00,479 INFO L276 IsEmpty]: Start isEmpty. Operand 27905 states and 46120 transitions. [2022-01-10 07:23:00,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-01-10 07:23:00,492 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:23:00,492 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:23:00,499 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 07:23:00,699 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 07:23:00,699 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:23:00,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:23:00,700 INFO L85 PathProgramCache]: Analyzing trace with hash -1351471358, now seen corresponding path program 1 times [2022-01-10 07:23:00,700 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:23:00,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1314014138] [2022-01-10 07:23:00,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:23:00,701 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:23:00,701 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:23:00,702 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 07:23:00,703 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 07:23:00,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:23:00,847 INFO L263 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:23:00,849 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:23:01,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:23:01,015 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:23:01,015 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:23:01,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1314014138] [2022-01-10 07:23:01,015 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1314014138] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:23:01,015 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:23:01,015 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:23:01,015 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238205645] [2022-01-10 07:23:01,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:23:01,016 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:23:01,016 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:23:01,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:23:01,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:23:01,016 INFO L87 Difference]: Start difference. First operand 27905 states and 46120 transitions. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:23:02,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:23:02,760 INFO L93 Difference]: Finished difference Result 63492 states and 105505 transitions. [2022-01-10 07:23:02,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:23:02,763 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 121 [2022-01-10 07:23:02,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:23:02,833 INFO L225 Difference]: With dead ends: 63492 [2022-01-10 07:23:02,833 INFO L226 Difference]: Without dead ends: 39026 [2022-01-10 07:23:02,867 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 119 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 07:23:02,868 INFO L933 BasicCegarLoop]: 694 mSDtfsCounter, 223 mSDsluCounter, 517 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 1211 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:23:02,868 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [223 Valid, 1211 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:23:02,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39026 states. [2022-01-10 07:23:04,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39026 to 38336. [2022-01-10 07:23:04,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38336 states, 38335 states have (on average 1.6467197078387896) internal successors, (63127), 38335 states have internal predecessors, (63127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:23:04,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38336 states to 38336 states and 63127 transitions. [2022-01-10 07:23:04,727 INFO L78 Accepts]: Start accepts. Automaton has 38336 states and 63127 transitions. Word has length 121 [2022-01-10 07:23:04,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:23:04,727 INFO L470 AbstractCegarLoop]: Abstraction has 38336 states and 63127 transitions. [2022-01-10 07:23:04,728 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:23:04,728 INFO L276 IsEmpty]: Start isEmpty. Operand 38336 states and 63127 transitions. [2022-01-10 07:23:04,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-01-10 07:23:04,768 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:23:04,768 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:23:04,777 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Ended with exit code 0 [2022-01-10 07:23:04,969 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 07:23:04,969 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:23:04,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:23:04,969 INFO L85 PathProgramCache]: Analyzing trace with hash 214728349, now seen corresponding path program 1 times [2022-01-10 07:23:04,970 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:23:04,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [139345808] [2022-01-10 07:23:04,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:23:04,970 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:23:04,970 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:23:04,971 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 07:23:04,972 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 07:23:05,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:23:05,094 INFO L263 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 07:23:05,096 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:23:05,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:23:05,255 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:23:05,255 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:23:05,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [139345808] [2022-01-10 07:23:05,255 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [139345808] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:23:05,255 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:23:05,255 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:23:05,255 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541555455] [2022-01-10 07:23:05,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:23:05,255 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 07:23:05,255 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:23:05,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 07:23:05,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 07:23:05,256 INFO L87 Difference]: Start difference. First operand 38336 states and 63127 transitions. Second operand has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:23:09,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:23:09,674 INFO L93 Difference]: Finished difference Result 133562 states and 219405 transitions. [2022-01-10 07:23:09,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:23:09,674 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 121 [2022-01-10 07:23:09,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:23:09,972 INFO L225 Difference]: With dead ends: 133562 [2022-01-10 07:23:09,972 INFO L226 Difference]: Without dead ends: 96921 [2022-01-10 07:23:10,050 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 118 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 07:23:10,056 INFO L933 BasicCegarLoop]: 1282 mSDtfsCounter, 1174 mSDsluCounter, 1463 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1174 SdHoareTripleChecker+Valid, 2745 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:23:10,056 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1174 Valid, 2745 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:23:10,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96921 states. [2022-01-10 07:23:12,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96921 to 39709. [2022-01-10 07:23:12,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39709 states, 39708 states have (on average 1.646746247607535) internal successors, (65389), 39708 states have internal predecessors, (65389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:23:12,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39709 states to 39709 states and 65389 transitions. [2022-01-10 07:23:12,956 INFO L78 Accepts]: Start accepts. Automaton has 39709 states and 65389 transitions. Word has length 121 [2022-01-10 07:23:12,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:23:12,957 INFO L470 AbstractCegarLoop]: Abstraction has 39709 states and 65389 transitions. [2022-01-10 07:23:12,957 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:23:12,957 INFO L276 IsEmpty]: Start isEmpty. Operand 39709 states and 65389 transitions. [2022-01-10 07:23:12,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-01-10 07:23:12,969 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:23:12,969 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:23:12,996 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-01-10 07:23:13,176 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 07:23:13,176 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:23:13,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:23:13,177 INFO L85 PathProgramCache]: Analyzing trace with hash -822507721, now seen corresponding path program 1 times [2022-01-10 07:23:13,177 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:23:13,177 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [194034691] [2022-01-10 07:23:13,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:23:13,177 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:23:13,178 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:23:13,178 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 07:23:13,180 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 07:23:13,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:23:13,333 INFO L263 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:23:13,334 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:23:13,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:23:13,485 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:23:13,485 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:23:13,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [194034691] [2022-01-10 07:23:13,486 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [194034691] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:23:13,486 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:23:13,486 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:23:13,486 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548553110] [2022-01-10 07:23:13,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:23:13,486 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:23:13,486 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:23:13,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:23:13,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:23:13,487 INFO L87 Difference]: Start difference. First operand 39709 states and 65389 transitions. Second operand has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:23:15,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:23:15,804 INFO L93 Difference]: Finished difference Result 73039 states and 120792 transitions. [2022-01-10 07:23:15,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:23:15,832 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 122 [2022-01-10 07:23:15,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:23:15,923 INFO L225 Difference]: With dead ends: 73039 [2022-01-10 07:23:15,923 INFO L226 Difference]: Without dead ends: 49593 [2022-01-10 07:23:15,950 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 120 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 07:23:15,951 INFO L933 BasicCegarLoop]: 710 mSDtfsCounter, 215 mSDsluCounter, 502 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 1212 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:23:15,951 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [215 Valid, 1212 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:23:15,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49593 states. [2022-01-10 07:23:18,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49593 to 49591. [2022-01-10 07:23:18,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49591 states, 49590 states have (on average 1.647650736035491) internal successors, (81707), 49590 states have internal predecessors, (81707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:23:18,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49591 states to 49591 states and 81707 transitions. [2022-01-10 07:23:18,469 INFO L78 Accepts]: Start accepts. Automaton has 49591 states and 81707 transitions. Word has length 122 [2022-01-10 07:23:18,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:23:18,469 INFO L470 AbstractCegarLoop]: Abstraction has 49591 states and 81707 transitions. [2022-01-10 07:23:18,470 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:23:18,470 INFO L276 IsEmpty]: Start isEmpty. Operand 49591 states and 81707 transitions. [2022-01-10 07:23:18,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-01-10 07:23:18,478 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:23:18,479 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:23:18,496 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 07:23:18,686 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 07:23:18,686 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:23:18,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:23:18,687 INFO L85 PathProgramCache]: Analyzing trace with hash 1954373243, now seen corresponding path program 1 times [2022-01-10 07:23:18,687 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:23:18,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1622561382] [2022-01-10 07:23:18,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:23:18,687 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:23:18,688 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:23:18,688 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 07:23:18,690 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 07:23:18,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:23:18,823 INFO L263 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:23:18,825 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:23:19,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:23:19,046 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:23:19,046 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:23:19,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1622561382] [2022-01-10 07:23:19,046 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1622561382] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:23:19,046 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:23:19,046 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:23:19,046 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279003869] [2022-01-10 07:23:19,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:23:19,047 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:23:19,047 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:23:19,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:23:19,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:23:19,048 INFO L87 Difference]: Start difference. First operand 49591 states and 81707 transitions. Second operand has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:23:23,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:23:23,641 INFO L93 Difference]: Finished difference Result 141943 states and 233636 transitions. [2022-01-10 07:23:23,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:23:23,642 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 122 [2022-01-10 07:23:23,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:23:23,820 INFO L225 Difference]: With dead ends: 141943 [2022-01-10 07:23:23,820 INFO L226 Difference]: Without dead ends: 95422 [2022-01-10 07:23:23,880 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 120 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 07:23:23,881 INFO L933 BasicCegarLoop]: 1021 mSDtfsCounter, 414 mSDsluCounter, 524 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 414 SdHoareTripleChecker+Valid, 1545 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:23:23,881 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [414 Valid, 1545 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:23:23,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95422 states. [2022-01-10 07:23:30,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95422 to 95420. [2022-01-10 07:23:30,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95420 states, 95419 states have (on average 1.638426309225626) internal successors, (156337), 95419 states have internal predecessors, (156337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:23:30,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95420 states to 95420 states and 156337 transitions. [2022-01-10 07:23:30,558 INFO L78 Accepts]: Start accepts. Automaton has 95420 states and 156337 transitions. Word has length 122 [2022-01-10 07:23:30,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:23:30,561 INFO L470 AbstractCegarLoop]: Abstraction has 95420 states and 156337 transitions. [2022-01-10 07:23:30,561 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:23:30,561 INFO L276 IsEmpty]: Start isEmpty. Operand 95420 states and 156337 transitions. [2022-01-10 07:23:30,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-01-10 07:23:30,576 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:23:30,576 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:23:30,583 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Ended with exit code 0 [2022-01-10 07:23:30,783 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 07:23:30,783 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:23:30,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:23:30,784 INFO L85 PathProgramCache]: Analyzing trace with hash -1197844658, now seen corresponding path program 1 times [2022-01-10 07:23:30,784 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:23:30,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [872498101] [2022-01-10 07:23:30,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:23:30,784 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:23:30,784 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:23:30,785 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 07:23:30,786 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 07:23:30,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:23:30,925 INFO L263 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 07:23:30,927 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:23:31,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:23:31,128 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:23:31,129 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:23:31,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [872498101] [2022-01-10 07:23:31,129 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [872498101] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:23:31,129 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:23:31,129 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:23:31,129 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136630087] [2022-01-10 07:23:31,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:23:31,130 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 07:23:31,130 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:23:31,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 07:23:31,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 07:23:31,130 INFO L87 Difference]: Start difference. First operand 95420 states and 156337 transitions. Second operand has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:23:41,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:23:41,107 INFO L93 Difference]: Finished difference Result 279004 states and 456855 transitions. [2022-01-10 07:23:41,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 07:23:41,107 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 123 [2022-01-10 07:23:41,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:23:41,733 INFO L225 Difference]: With dead ends: 279004 [2022-01-10 07:23:41,741 INFO L226 Difference]: Without dead ends: 184715 [2022-01-10 07:23:41,835 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 120 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 07:23:41,837 INFO L933 BasicCegarLoop]: 999 mSDtfsCounter, 1013 mSDsluCounter, 521 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1013 SdHoareTripleChecker+Valid, 1520 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:23:41,837 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1013 Valid, 1520 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:23:41,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184715 states. [2022-01-10 07:23:51,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184715 to 184713. [2022-01-10 07:23:52,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184713 states, 184712 states have (on average 1.6266133223612975) internal successors, (300455), 184712 states have internal predecessors, (300455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:23:52,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184713 states to 184713 states and 300455 transitions. [2022-01-10 07:23:52,547 INFO L78 Accepts]: Start accepts. Automaton has 184713 states and 300455 transitions. Word has length 123 [2022-01-10 07:23:52,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:23:52,548 INFO L470 AbstractCegarLoop]: Abstraction has 184713 states and 300455 transitions. [2022-01-10 07:23:52,548 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:23:52,548 INFO L276 IsEmpty]: Start isEmpty. Operand 184713 states and 300455 transitions. [2022-01-10 07:23:52,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-01-10 07:23:52,574 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:23:52,575 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:23:52,582 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-01-10 07:23:52,781 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 07:23:52,782 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:23:52,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:23:52,782 INFO L85 PathProgramCache]: Analyzing trace with hash -1904879183, now seen corresponding path program 1 times [2022-01-10 07:23:52,782 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:23:52,782 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [499684043] [2022-01-10 07:23:52,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:23:52,783 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:23:52,783 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:23:52,784 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 07:23:52,786 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 07:23:52,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:23:52,901 INFO L263 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 07:23:52,903 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:23:53,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:23:53,115 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:23:53,115 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:23:53,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [499684043] [2022-01-10 07:23:53,115 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [499684043] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:23:53,115 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:23:53,115 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:23:53,115 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629787437] [2022-01-10 07:23:53,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:23:53,116 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 07:23:53,116 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:23:53,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 07:23:53,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 07:23:53,116 INFO L87 Difference]: Start difference. First operand 184713 states and 300455 transitions. Second operand has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)