/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_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.1.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 01:25:31,208 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 01:25:31,210 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 01:25:31,271 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 01:25:31,272 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 01:25:31,282 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 01:25:31,285 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 01:25:31,287 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 01:25:31,289 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 01:25:31,293 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 01:25:31,293 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 01:25:31,295 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 01:25:31,295 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 01:25:31,298 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 01:25:31,299 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 01:25:31,302 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 01:25:31,303 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 01:25:31,303 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 01:25:31,305 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 01:25:31,310 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 01:25:31,311 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 01:25:31,312 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 01:25:31,313 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 01:25:31,314 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 01:25:31,320 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 01:25:31,320 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 01:25:31,320 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 01:25:31,322 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 01:25:31,322 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 01:25:31,323 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 01:25:31,323 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 01:25:31,324 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 01:25:31,326 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 01:25:31,326 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 01:25:31,327 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 01:25:31,328 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 01:25:31,328 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 01:25:31,328 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 01:25:31,329 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 01:25:31,329 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 01:25:31,330 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 01:25:31,331 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Default.epf [2022-01-10 01:25:31,360 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 01:25:31,361 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 01:25:31,361 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 01:25:31,361 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 01:25:31,362 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 01:25:31,362 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 01:25:31,363 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 01:25:31,363 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 01:25:31,363 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 01:25:31,363 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 01:25:31,364 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 01:25:31,364 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 01:25:31,364 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 01:25:31,364 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 01:25:31,365 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 01:25:31,365 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 01:25:31,365 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 01:25:31,365 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 01:25:31,365 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 01:25:31,365 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 01:25:31,366 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 01:25:31,366 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 01:25:31,366 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 01:25:31,366 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 01:25:31,366 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 01:25:31,366 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 01:25:31,366 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 01:25:31,367 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 01:25:31,367 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 01:25:31,367 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 01:25:31,367 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 01:25:31,601 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 01:25:31,628 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 01:25:31,630 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 01:25:31,631 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 01:25:31,631 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 01:25:31,632 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.1.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c [2022-01-10 01:25:31,686 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/958d7b04c/40f52481fb9946cfafee0fd2397c5662/FLAG0f014db01 [2022-01-10 01:25:32,244 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 01:25:32,245 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.1.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c [2022-01-10 01:25:32,266 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/958d7b04c/40f52481fb9946cfafee0fd2397c5662/FLAG0f014db01 [2022-01-10 01:25:32,504 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/958d7b04c/40f52481fb9946cfafee0fd2397c5662 [2022-01-10 01:25:32,506 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 01:25:32,507 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 01:25:32,508 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 01:25:32,508 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 01:25:32,511 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 01:25:32,511 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 01:25:32" (1/1) ... [2022-01-10 01:25:32,512 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60cd631b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:25:32, skipping insertion in model container [2022-01-10 01:25:32,512 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 01:25:32" (1/1) ... [2022-01-10 01:25:32,517 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 01:25:32,596 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 01:25:33,060 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_floodmax.4.1.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c[31621,31634] [2022-01-10 01:25:33,207 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 01:25:33,219 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 01:25:33,419 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_floodmax.4.1.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c[31621,31634] [2022-01-10 01:25:33,520 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 01:25:33,537 INFO L208 MainTranslator]: Completed translation [2022-01-10 01:25:33,538 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:25:33 WrapperNode [2022-01-10 01:25:33,538 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 01:25:33,539 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 01:25:33,539 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 01:25:33,539 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 01:25:33,546 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:25:33" (1/1) ... [2022-01-10 01:25:33,574 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:25:33" (1/1) ... [2022-01-10 01:25:33,665 INFO L137 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 2658 [2022-01-10 01:25:33,666 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 01:25:33,667 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 01:25:33,667 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 01:25:33,667 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 01:25:33,674 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:25:33" (1/1) ... [2022-01-10 01:25:33,674 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:25:33" (1/1) ... [2022-01-10 01:25:33,684 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:25:33" (1/1) ... [2022-01-10 01:25:33,684 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:25:33" (1/1) ... [2022-01-10 01:25:33,731 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:25:33" (1/1) ... [2022-01-10 01:25:33,767 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:25:33" (1/1) ... [2022-01-10 01:25:33,775 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:25:33" (1/1) ... [2022-01-10 01:25:33,793 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 01:25:33,794 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 01:25:33,794 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 01:25:33,795 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 01:25:33,799 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:25:33" (1/1) ... [2022-01-10 01:25:33,805 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 01:25:33,820 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 01:25:33,832 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 01:25:33,858 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 01:25:33,878 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 01:25:33,879 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-10 01:25:33,879 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 01:25:33,879 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 01:25:34,079 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 01:25:34,080 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 01:25:35,470 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 01:25:35,489 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 01:25:35,489 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-10 01:25:35,492 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 01:25:35 BoogieIcfgContainer [2022-01-10 01:25:35,492 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 01:25:35,494 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 01:25:35,494 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 01:25:35,497 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 01:25:35,498 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 01:25:32" (1/3) ... [2022-01-10 01:25:35,498 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11a2294 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 01:25:35, skipping insertion in model container [2022-01-10 01:25:35,498 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:25:33" (2/3) ... [2022-01-10 01:25:35,499 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11a2294 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 01:25:35, skipping insertion in model container [2022-01-10 01:25:35,499 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 01:25:35" (3/3) ... [2022-01-10 01:25:35,501 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.4.1.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c [2022-01-10 01:25:35,506 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 01:25:35,506 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 01:25:35,564 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 01:25:35,569 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 01:25:35,570 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 01:25:35,600 INFO L276 IsEmpty]: Start isEmpty. Operand has 707 states, 705 states have (on average 1.7843971631205673) internal successors, (1258), 706 states have internal predecessors, (1258), 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 01:25:35,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2022-01-10 01:25:35,644 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:25:35,645 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:25:35,645 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:25:35,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:25:35,650 INFO L85 PathProgramCache]: Analyzing trace with hash 1183509970, now seen corresponding path program 1 times [2022-01-10 01:25:35,657 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:25:35,658 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997216971] [2022-01-10 01:25:35,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:25:35,659 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:25:36,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:25:36,369 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 01:25:36,370 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:25:36,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997216971] [2022-01-10 01:25:36,371 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997216971] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:25:36,371 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:25:36,371 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 01:25:36,372 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163219787] [2022-01-10 01:25:36,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:25:36,377 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 01:25:36,377 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:25:36,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 01:25:36,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 01:25:36,409 INFO L87 Difference]: Start difference. First operand has 707 states, 705 states have (on average 1.7843971631205673) internal successors, (1258), 706 states have internal predecessors, (1258), 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 97.33333333333333) internal successors, (292), 3 states have internal predecessors, (292), 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 01:25:36,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:25:36,672 INFO L93 Difference]: Finished difference Result 1287 states and 2272 transitions. [2022-01-10 01:25:36,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 01:25:36,674 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 97.33333333333333) internal successors, (292), 3 states have internal predecessors, (292), 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 292 [2022-01-10 01:25:36,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:25:36,702 INFO L225 Difference]: With dead ends: 1287 [2022-01-10 01:25:36,703 INFO L226 Difference]: Without dead ends: 1126 [2022-01-10 01:25:36,707 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 01:25:36,711 INFO L933 BasicCegarLoop]: 1197 mSDtfsCounter, 732 mSDsluCounter, 982 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 732 SdHoareTripleChecker+Valid, 2179 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 01:25:36,712 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [732 Valid, 2179 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 01:25:36,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1126 states. [2022-01-10 01:25:36,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1126 to 1124. [2022-01-10 01:25:36,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1124 states, 1123 states have (on average 1.5592163846838825) internal successors, (1751), 1123 states have internal predecessors, (1751), 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 01:25:36,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1124 states to 1124 states and 1751 transitions. [2022-01-10 01:25:36,827 INFO L78 Accepts]: Start accepts. Automaton has 1124 states and 1751 transitions. Word has length 292 [2022-01-10 01:25:36,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:25:36,830 INFO L470 AbstractCegarLoop]: Abstraction has 1124 states and 1751 transitions. [2022-01-10 01:25:36,831 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 97.33333333333333) internal successors, (292), 3 states have internal predecessors, (292), 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 01:25:36,832 INFO L276 IsEmpty]: Start isEmpty. Operand 1124 states and 1751 transitions. [2022-01-10 01:25:36,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2022-01-10 01:25:36,838 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:25:36,838 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:25:36,839 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 01:25:36,839 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:25:36,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:25:36,841 INFO L85 PathProgramCache]: Analyzing trace with hash 605372336, now seen corresponding path program 1 times [2022-01-10 01:25:36,841 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:25:36,841 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877605446] [2022-01-10 01:25:36,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:25:36,842 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:25:36,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:25:37,074 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 01:25:37,075 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:25:37,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877605446] [2022-01-10 01:25:37,076 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877605446] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:25:37,076 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:25:37,076 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 01:25:37,076 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936112773] [2022-01-10 01:25:37,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:25:37,078 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 01:25:37,078 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:25:37,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 01:25:37,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 01:25:37,080 INFO L87 Difference]: Start difference. First operand 1124 states and 1751 transitions. Second operand has 3 states, 3 states have (on average 97.33333333333333) internal successors, (292), 3 states have internal predecessors, (292), 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 01:25:37,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:25:37,290 INFO L93 Difference]: Finished difference Result 2232 states and 3494 transitions. [2022-01-10 01:25:37,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 01:25:37,291 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 97.33333333333333) internal successors, (292), 3 states have internal predecessors, (292), 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 292 [2022-01-10 01:25:37,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:25:37,300 INFO L225 Difference]: With dead ends: 2232 [2022-01-10 01:25:37,300 INFO L226 Difference]: Without dead ends: 1950 [2022-01-10 01:25:37,302 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 01:25:37,303 INFO L933 BasicCegarLoop]: 1041 mSDtfsCounter, 588 mSDsluCounter, 861 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 588 SdHoareTripleChecker+Valid, 1902 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 01:25:37,304 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [588 Valid, 1902 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 01:25:37,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1950 states. [2022-01-10 01:25:37,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1950 to 1948. [2022-01-10 01:25:37,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1948 states, 1947 states have (on average 1.549563430919363) internal successors, (3017), 1947 states have internal predecessors, (3017), 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 01:25:37,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1948 states to 1948 states and 3017 transitions. [2022-01-10 01:25:37,384 INFO L78 Accepts]: Start accepts. Automaton has 1948 states and 3017 transitions. Word has length 292 [2022-01-10 01:25:37,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:25:37,385 INFO L470 AbstractCegarLoop]: Abstraction has 1948 states and 3017 transitions. [2022-01-10 01:25:37,385 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 97.33333333333333) internal successors, (292), 3 states have internal predecessors, (292), 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 01:25:37,385 INFO L276 IsEmpty]: Start isEmpty. Operand 1948 states and 3017 transitions. [2022-01-10 01:25:37,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2022-01-10 01:25:37,390 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:25:37,390 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:25:37,391 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 01:25:37,391 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:25:37,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:25:37,392 INFO L85 PathProgramCache]: Analyzing trace with hash 108904004, now seen corresponding path program 1 times [2022-01-10 01:25:37,392 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:25:37,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994416630] [2022-01-10 01:25:37,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:25:37,392 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:25:37,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:25:37,758 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 01:25:37,758 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:25:37,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994416630] [2022-01-10 01:25:37,761 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994416630] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:25:37,766 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:25:37,766 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 01:25:37,767 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854298790] [2022-01-10 01:25:37,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:25:37,767 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 01:25:37,768 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:25:37,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 01:25:37,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 01:25:37,769 INFO L87 Difference]: Start difference. First operand 1948 states and 3017 transitions. Second operand has 4 states, 4 states have (on average 73.0) internal successors, (292), 4 states have internal predecessors, (292), 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 01:25:38,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:25:38,152 INFO L93 Difference]: Finished difference Result 5759 states and 8912 transitions. [2022-01-10 01:25:38,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 01:25:38,153 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 73.0) internal successors, (292), 4 states have internal predecessors, (292), 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 292 [2022-01-10 01:25:38,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:25:38,168 INFO L225 Difference]: With dead ends: 5759 [2022-01-10 01:25:38,168 INFO L226 Difference]: Without dead ends: 3822 [2022-01-10 01:25:38,172 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 01:25:38,173 INFO L933 BasicCegarLoop]: 1828 mSDtfsCounter, 2369 mSDsluCounter, 1035 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2369 SdHoareTripleChecker+Valid, 2863 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 01:25:38,173 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2369 Valid, 2863 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 01:25:38,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3822 states. [2022-01-10 01:25:38,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3822 to 3820. [2022-01-10 01:25:38,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3820 states, 3819 states have (on average 1.5399319193506154) internal successors, (5881), 3819 states have internal predecessors, (5881), 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 01:25:38,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3820 states to 3820 states and 5881 transitions. [2022-01-10 01:25:38,422 INFO L78 Accepts]: Start accepts. Automaton has 3820 states and 5881 transitions. Word has length 292 [2022-01-10 01:25:38,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:25:38,422 INFO L470 AbstractCegarLoop]: Abstraction has 3820 states and 5881 transitions. [2022-01-10 01:25:38,422 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 73.0) internal successors, (292), 4 states have internal predecessors, (292), 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 01:25:38,422 INFO L276 IsEmpty]: Start isEmpty. Operand 3820 states and 5881 transitions. [2022-01-10 01:25:38,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2022-01-10 01:25:38,429 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:25:38,430 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:25:38,430 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 01:25:38,430 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:25:38,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:25:38,431 INFO L85 PathProgramCache]: Analyzing trace with hash 2022024641, now seen corresponding path program 1 times [2022-01-10 01:25:38,431 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:25:38,431 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399608505] [2022-01-10 01:25:38,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:25:38,431 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:25:38,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:25:38,568 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 01:25:38,568 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:25:38,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399608505] [2022-01-10 01:25:38,569 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399608505] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:25:38,569 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:25:38,569 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 01:25:38,569 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567033731] [2022-01-10 01:25:38,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:25:38,570 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 01:25:38,570 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:25:38,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 01:25:38,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 01:25:38,571 INFO L87 Difference]: Start difference. First operand 3820 states and 5881 transitions. Second operand has 3 states, 3 states have (on average 98.0) internal successors, (294), 3 states have internal predecessors, (294), 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 01:25:39,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:25:39,118 INFO L93 Difference]: Finished difference Result 11195 states and 17195 transitions. [2022-01-10 01:25:39,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 01:25:39,119 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 98.0) internal successors, (294), 3 states have internal predecessors, (294), 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 294 [2022-01-10 01:25:39,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:25:39,147 INFO L225 Difference]: With dead ends: 11195 [2022-01-10 01:25:39,148 INFO L226 Difference]: Without dead ends: 7500 [2022-01-10 01:25:39,154 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 01:25:39,155 INFO L933 BasicCegarLoop]: 2078 mSDtfsCounter, 976 mSDsluCounter, 1045 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 976 SdHoareTripleChecker+Valid, 3123 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 01:25:39,155 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [976 Valid, 3123 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 01:25:39,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7500 states. [2022-01-10 01:25:39,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7500 to 7498. [2022-01-10 01:25:39,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7498 states, 7497 states have (on average 1.5311457916499933) internal successors, (11479), 7497 states have internal predecessors, (11479), 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 01:25:39,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7498 states to 7498 states and 11479 transitions. [2022-01-10 01:25:39,699 INFO L78 Accepts]: Start accepts. Automaton has 7498 states and 11479 transitions. Word has length 294 [2022-01-10 01:25:39,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:25:39,700 INFO L470 AbstractCegarLoop]: Abstraction has 7498 states and 11479 transitions. [2022-01-10 01:25:39,700 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 98.0) internal successors, (294), 3 states have internal predecessors, (294), 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 01:25:39,700 INFO L276 IsEmpty]: Start isEmpty. Operand 7498 states and 11479 transitions. [2022-01-10 01:25:39,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2022-01-10 01:25:39,715 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:25:39,715 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:25:39,716 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 01:25:39,716 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:25:39,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:25:39,717 INFO L85 PathProgramCache]: Analyzing trace with hash 875428550, now seen corresponding path program 1 times [2022-01-10 01:25:39,717 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:25:39,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602847839] [2022-01-10 01:25:39,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:25:39,717 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:25:39,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:25:39,800 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 01:25:39,800 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:25:39,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602847839] [2022-01-10 01:25:39,800 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602847839] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:25:39,800 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:25:39,800 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 01:25:39,801 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982606492] [2022-01-10 01:25:39,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:25:39,802 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 01:25:39,803 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:25:39,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 01:25:39,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 01:25:39,803 INFO L87 Difference]: Start difference. First operand 7498 states and 11479 transitions. Second operand has 3 states, 3 states have (on average 98.0) internal successors, (294), 3 states have internal predecessors, (294), 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 01:25:40,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:25:40,771 INFO L93 Difference]: Finished difference Result 22427 states and 34321 transitions. [2022-01-10 01:25:40,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 01:25:40,772 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 98.0) internal successors, (294), 3 states have internal predecessors, (294), 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 294 [2022-01-10 01:25:40,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:25:40,842 INFO L225 Difference]: With dead ends: 22427 [2022-01-10 01:25:40,843 INFO L226 Difference]: Without dead ends: 14967 [2022-01-10 01:25:40,859 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 01:25:40,863 INFO L933 BasicCegarLoop]: 2180 mSDtfsCounter, 1087 mSDsluCounter, 1088 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1087 SdHoareTripleChecker+Valid, 3268 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 01:25:40,864 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1087 Valid, 3268 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 01:25:40,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14967 states. [2022-01-10 01:25:41,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14967 to 7517. [2022-01-10 01:25:41,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7517 states, 7516 states have (on average 1.5310005321979776) internal successors, (11507), 7516 states have internal predecessors, (11507), 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 01:25:41,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7517 states to 7517 states and 11507 transitions. [2022-01-10 01:25:41,657 INFO L78 Accepts]: Start accepts. Automaton has 7517 states and 11507 transitions. Word has length 294 [2022-01-10 01:25:41,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:25:41,657 INFO L470 AbstractCegarLoop]: Abstraction has 7517 states and 11507 transitions. [2022-01-10 01:25:41,658 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 98.0) internal successors, (294), 3 states have internal predecessors, (294), 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 01:25:41,658 INFO L276 IsEmpty]: Start isEmpty. Operand 7517 states and 11507 transitions. [2022-01-10 01:25:41,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2022-01-10 01:25:41,672 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:25:41,673 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:25:41,673 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 01:25:41,673 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:25:41,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:25:41,674 INFO L85 PathProgramCache]: Analyzing trace with hash 1564373268, now seen corresponding path program 1 times [2022-01-10 01:25:41,675 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:25:41,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984768326] [2022-01-10 01:25:41,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:25:41,679 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:25:41,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:25:41,745 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 01:25:41,746 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:25:41,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984768326] [2022-01-10 01:25:41,746 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984768326] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:25:41,746 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:25:41,746 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 01:25:41,746 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589460724] [2022-01-10 01:25:41,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:25:41,747 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 01:25:41,747 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:25:41,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 01:25:41,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 01:25:41,748 INFO L87 Difference]: Start difference. First operand 7517 states and 11507 transitions. Second operand has 3 states, 3 states have (on average 98.33333333333333) internal successors, (295), 3 states have internal predecessors, (295), 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 01:25:42,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:25:42,896 INFO L93 Difference]: Finished difference Result 22446 states and 34342 transitions. [2022-01-10 01:25:42,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 01:25:42,898 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 98.33333333333333) internal successors, (295), 3 states have internal predecessors, (295), 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 295 [2022-01-10 01:25:42,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:25:42,936 INFO L225 Difference]: With dead ends: 22446 [2022-01-10 01:25:42,936 INFO L226 Difference]: Without dead ends: 14985 [2022-01-10 01:25:42,953 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 01:25:42,957 INFO L933 BasicCegarLoop]: 2180 mSDtfsCounter, 1082 mSDsluCounter, 1088 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1082 SdHoareTripleChecker+Valid, 3268 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 01:25:42,959 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1082 Valid, 3268 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 01:25:42,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14985 states. [2022-01-10 01:25:43,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14985 to 7535. [2022-01-10 01:25:43,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7535 states, 7534 states have (on average 1.5301300769843376) internal successors, (11528), 7534 states have internal predecessors, (11528), 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 01:25:43,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7535 states to 7535 states and 11528 transitions. [2022-01-10 01:25:43,673 INFO L78 Accepts]: Start accepts. Automaton has 7535 states and 11528 transitions. Word has length 295 [2022-01-10 01:25:43,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:25:43,674 INFO L470 AbstractCegarLoop]: Abstraction has 7535 states and 11528 transitions. [2022-01-10 01:25:43,674 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 98.33333333333333) internal successors, (295), 3 states have internal predecessors, (295), 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 01:25:43,674 INFO L276 IsEmpty]: Start isEmpty. Operand 7535 states and 11528 transitions. [2022-01-10 01:25:43,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2022-01-10 01:25:43,688 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:25:43,689 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:25:43,689 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 01:25:43,689 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:25:43,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:25:43,690 INFO L85 PathProgramCache]: Analyzing trace with hash -1382588932, now seen corresponding path program 1 times [2022-01-10 01:25:43,690 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:25:43,690 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742657745] [2022-01-10 01:25:43,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:25:43,690 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:25:43,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:25:43,802 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 01:25:43,802 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:25:43,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742657745] [2022-01-10 01:25:43,802 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742657745] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:25:43,802 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:25:43,803 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 01:25:43,803 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182498460] [2022-01-10 01:25:43,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:25:43,803 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 01:25:43,804 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:25:43,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 01:25:43,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 01:25:43,804 INFO L87 Difference]: Start difference. First operand 7535 states and 11528 transitions. Second operand has 3 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 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 01:25:44,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:25:44,873 INFO L93 Difference]: Finished difference Result 21990 states and 33561 transitions. [2022-01-10 01:25:44,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 01:25:44,874 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 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 296 [2022-01-10 01:25:44,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:25:44,908 INFO L225 Difference]: With dead ends: 21990 [2022-01-10 01:25:44,909 INFO L226 Difference]: Without dead ends: 14696 [2022-01-10 01:25:44,925 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 01:25:44,926 INFO L933 BasicCegarLoop]: 2140 mSDtfsCounter, 969 mSDsluCounter, 1045 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 969 SdHoareTripleChecker+Valid, 3185 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 01:25:44,926 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [969 Valid, 3185 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 01:25:44,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14696 states. [2022-01-10 01:25:45,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14696 to 14694. [2022-01-10 01:25:45,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14694 states, 14693 states have (on average 1.5199074389164908) internal successors, (22332), 14693 states have internal predecessors, (22332), 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 01:25:46,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14694 states to 14694 states and 22332 transitions. [2022-01-10 01:25:46,011 INFO L78 Accepts]: Start accepts. Automaton has 14694 states and 22332 transitions. Word has length 296 [2022-01-10 01:25:46,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:25:46,012 INFO L470 AbstractCegarLoop]: Abstraction has 14694 states and 22332 transitions. [2022-01-10 01:25:46,012 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 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 01:25:46,012 INFO L276 IsEmpty]: Start isEmpty. Operand 14694 states and 22332 transitions. [2022-01-10 01:25:46,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2022-01-10 01:25:46,038 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:25:46,038 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:25:46,038 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 01:25:46,039 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:25:46,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:25:46,039 INFO L85 PathProgramCache]: Analyzing trace with hash 1496386137, now seen corresponding path program 1 times [2022-01-10 01:25:46,039 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:25:46,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587103695] [2022-01-10 01:25:46,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:25:46,040 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:25:46,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:25:46,348 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 01:25:46,348 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:25:46,348 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587103695] [2022-01-10 01:25:46,348 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587103695] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:25:46,349 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:25:46,349 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 01:25:46,349 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938271366] [2022-01-10 01:25:46,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:25:46,350 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 01:25:46,350 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:25:46,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 01:25:46,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 01:25:46,351 INFO L87 Difference]: Start difference. First operand 14694 states and 22332 transitions. Second operand has 5 states, 5 states have (on average 59.2) internal successors, (296), 5 states have internal predecessors, (296), 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 01:25:48,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:25:48,282 INFO L93 Difference]: Finished difference Result 43224 states and 65597 transitions. [2022-01-10 01:25:48,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 01:25:48,283 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 59.2) internal successors, (296), 5 states have internal predecessors, (296), 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 296 [2022-01-10 01:25:48,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:25:48,346 INFO L225 Difference]: With dead ends: 43224 [2022-01-10 01:25:48,346 INFO L226 Difference]: Without dead ends: 28585 [2022-01-10 01:25:48,376 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 01:25:48,376 INFO L933 BasicCegarLoop]: 1825 mSDtfsCounter, 3428 mSDsluCounter, 1035 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3428 SdHoareTripleChecker+Valid, 2860 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 01:25:48,377 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3428 Valid, 2860 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 01:25:48,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28585 states. [2022-01-10 01:25:50,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28585 to 28583. [2022-01-10 01:25:50,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28583 states, 28582 states have (on average 1.508116996711217) internal successors, (43105), 28582 states have internal predecessors, (43105), 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 01:25:50,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28583 states to 28583 states and 43105 transitions. [2022-01-10 01:25:50,445 INFO L78 Accepts]: Start accepts. Automaton has 28583 states and 43105 transitions. Word has length 296 [2022-01-10 01:25:50,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:25:50,445 INFO L470 AbstractCegarLoop]: Abstraction has 28583 states and 43105 transitions. [2022-01-10 01:25:50,446 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 59.2) internal successors, (296), 5 states have internal predecessors, (296), 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 01:25:50,446 INFO L276 IsEmpty]: Start isEmpty. Operand 28583 states and 43105 transitions. [2022-01-10 01:25:50,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2022-01-10 01:25:50,503 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:25:50,504 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:25:50,504 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 01:25:50,504 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:25:50,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:25:50,505 INFO L85 PathProgramCache]: Analyzing trace with hash 1537728552, now seen corresponding path program 1 times [2022-01-10 01:25:50,505 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:25:50,505 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510349494] [2022-01-10 01:25:50,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:25:50,505 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:25:50,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:25:50,610 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 01:25:50,610 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:25:50,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510349494] [2022-01-10 01:25:50,610 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510349494] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:25:50,610 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:25:50,611 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 01:25:50,611 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43112907] [2022-01-10 01:25:50,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:25:50,612 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 01:25:50,612 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:25:50,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 01:25:50,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 01:25:50,613 INFO L87 Difference]: Start difference. First operand 28583 states and 43105 transitions. Second operand has 3 states, 3 states have (on average 99.33333333333333) internal successors, (298), 3 states have internal predecessors, (298), 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 01:25:54,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:25:54,400 INFO L93 Difference]: Finished difference Result 84025 states and 126490 transitions. [2022-01-10 01:25:54,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 01:25:54,401 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 99.33333333333333) internal successors, (298), 3 states have internal predecessors, (298), 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 298 [2022-01-10 01:25:54,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:25:54,559 INFO L225 Difference]: With dead ends: 84025 [2022-01-10 01:25:54,559 INFO L226 Difference]: Without dead ends: 55959 [2022-01-10 01:25:54,624 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 01:25:54,625 INFO L933 BasicCegarLoop]: 2126 mSDtfsCounter, 956 mSDsluCounter, 1045 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 956 SdHoareTripleChecker+Valid, 3171 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 01:25:54,625 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [956 Valid, 3171 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 01:25:54,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55959 states. [2022-01-10 01:25:58,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55959 to 55957. [2022-01-10 01:25:58,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55957 states, 55956 states have (on average 1.4976410036457217) internal successors, (83802), 55956 states have internal predecessors, (83802), 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 01:25:58,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55957 states to 55957 states and 83802 transitions. [2022-01-10 01:25:58,542 INFO L78 Accepts]: Start accepts. Automaton has 55957 states and 83802 transitions. Word has length 298 [2022-01-10 01:25:58,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:25:58,542 INFO L470 AbstractCegarLoop]: Abstraction has 55957 states and 83802 transitions. [2022-01-10 01:25:58,542 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 99.33333333333333) internal successors, (298), 3 states have internal predecessors, (298), 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 01:25:58,543 INFO L276 IsEmpty]: Start isEmpty. Operand 55957 states and 83802 transitions. [2022-01-10 01:25:58,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2022-01-10 01:25:58,604 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:25:58,604 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:25:58,604 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 01:25:58,605 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:25:58,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:25:58,605 INFO L85 PathProgramCache]: Analyzing trace with hash 1938489285, now seen corresponding path program 1 times [2022-01-10 01:25:58,605 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:25:58,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393592604] [2022-01-10 01:25:58,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:25:58,605 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:25:58,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:25:58,819 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 01:25:58,819 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:25:58,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393592604] [2022-01-10 01:25:58,819 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393592604] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:25:58,820 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:25:58,820 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 01:25:58,820 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475134608] [2022-01-10 01:25:58,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:25:58,820 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 01:25:58,820 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:25:58,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 01:25:58,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 01:25:58,821 INFO L87 Difference]: Start difference. First operand 55957 states and 83802 transitions. Second operand has 5 states, 5 states have (on average 59.6) internal successors, (298), 5 states have internal predecessors, (298), 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 01:26:06,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:26:06,269 INFO L93 Difference]: Finished difference Result 165068 states and 246828 transitions. [2022-01-10 01:26:06,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 01:26:06,270 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 59.6) internal successors, (298), 5 states have internal predecessors, (298), 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 298 [2022-01-10 01:26:06,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:26:06,586 INFO L225 Difference]: With dead ends: 165068 [2022-01-10 01:26:06,587 INFO L226 Difference]: Without dead ends: 109262 [2022-01-10 01:26:06,652 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 01:26:06,653 INFO L933 BasicCegarLoop]: 1820 mSDtfsCounter, 2440 mSDsluCounter, 2070 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2440 SdHoareTripleChecker+Valid, 3890 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 01:26:06,653 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2440 Valid, 3890 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 01:26:06,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109262 states. [2022-01-10 01:26:14,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109262 to 109260. [2022-01-10 01:26:14,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109260 states, 109259 states have (on average 1.4853513211726266) internal successors, (162288), 109259 states have internal predecessors, (162288), 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 01:26:14,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109260 states to 109260 states and 162288 transitions. [2022-01-10 01:26:14,905 INFO L78 Accepts]: Start accepts. Automaton has 109260 states and 162288 transitions. Word has length 298 [2022-01-10 01:26:14,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:26:14,906 INFO L470 AbstractCegarLoop]: Abstraction has 109260 states and 162288 transitions. [2022-01-10 01:26:14,906 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 59.6) internal successors, (298), 5 states have internal predecessors, (298), 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 01:26:14,906 INFO L276 IsEmpty]: Start isEmpty. Operand 109260 states and 162288 transitions. [2022-01-10 01:26:15,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2022-01-10 01:26:15,066 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:26:15,066 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:26:15,067 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 01:26:15,067 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:26:15,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:26:15,067 INFO L85 PathProgramCache]: Analyzing trace with hash 1499019201, now seen corresponding path program 1 times [2022-01-10 01:26:15,067 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:26:15,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519169250] [2022-01-10 01:26:15,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:26:15,068 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:26:15,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:26:15,525 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 01:26:15,526 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:26:15,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519169250] [2022-01-10 01:26:15,526 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519169250] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:26:15,526 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:26:15,526 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 01:26:15,526 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555840612] [2022-01-10 01:26:15,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:26:15,527 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 01:26:15,527 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:26:15,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 01:26:15,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 01:26:15,528 INFO L87 Difference]: Start difference. First operand 109260 states and 162288 transitions. Second operand has 4 states, 4 states have (on average 74.5) internal successors, (298), 4 states have internal predecessors, (298), 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 01:26:32,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:26:32,180 INFO L93 Difference]: Finished difference Result 322951 states and 479109 transitions. [2022-01-10 01:26:32,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 01:26:32,181 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 74.5) internal successors, (298), 4 states have internal predecessors, (298), 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 298 [2022-01-10 01:26:32,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted.