/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/combinations/pals_lcr.8.ufo.UNBOUNDED.pals+Problem12_label08.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 02:30:32,444 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 02:30:32,445 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 02:30:32,466 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 02:30:32,466 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 02:30:32,467 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 02:30:32,468 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 02:30:32,470 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 02:30:32,471 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 02:30:32,472 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 02:30:32,472 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 02:30:32,473 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 02:30:32,473 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 02:30:32,474 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 02:30:32,475 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 02:30:32,476 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 02:30:32,476 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 02:30:32,477 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 02:30:32,478 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 02:30:32,480 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 02:30:32,481 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 02:30:32,482 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 02:30:32,483 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 02:30:32,484 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 02:30:32,486 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 02:30:32,486 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 02:30:32,487 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 02:30:32,487 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 02:30:32,488 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 02:30:32,488 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 02:30:32,488 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 02:30:32,489 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 02:30:32,490 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 02:30:32,490 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 02:30:32,491 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 02:30:32,491 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 02:30:32,492 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 02:30:32,492 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 02:30:32,492 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 02:30:32,492 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 02:30:32,493 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 02:30:32,497 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 02:30:32,520 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 02:30:32,520 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 02:30:32,520 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 02:30:32,520 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 02:30:32,521 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 02:30:32,521 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 02:30:32,521 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 02:30:32,521 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 02:30:32,522 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 02:30:32,522 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 02:30:32,531 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 02:30:32,531 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 02:30:32,531 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 02:30:32,531 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 02:30:32,531 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 02:30:32,531 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 02:30:32,532 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 02:30:32,532 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 02:30:32,532 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 02:30:32,532 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 02:30:32,532 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 02:30:32,532 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 02:30:32,532 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 02:30:32,532 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 02:30:32,532 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 02:30:32,532 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 02:30:32,533 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 02:30:32,533 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 02:30:32,533 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 02:30:32,533 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 02:30:32,533 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 02:30:32,698 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 02:30:32,715 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 02:30:32,717 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 02:30:32,718 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 02:30:32,721 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 02:30:32,722 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/pals_lcr.8.ufo.UNBOUNDED.pals+Problem12_label08.c [2022-01-10 02:30:32,792 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/198ade25e/aba0964eb4544882ae96bd11b6aa895e/FLAG210f31fea [2022-01-10 02:30:33,326 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 02:30:33,326 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.8.ufo.UNBOUNDED.pals+Problem12_label08.c [2022-01-10 02:30:33,345 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/198ade25e/aba0964eb4544882ae96bd11b6aa895e/FLAG210f31fea [2022-01-10 02:30:33,818 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/198ade25e/aba0964eb4544882ae96bd11b6aa895e [2022-01-10 02:30:33,821 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 02:30:33,822 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 02:30:33,823 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 02:30:33,823 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 02:30:33,828 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 02:30:33,828 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 02:30:33" (1/1) ... [2022-01-10 02:30:33,829 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a5713cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:30:33, skipping insertion in model container [2022-01-10 02:30:33,829 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 02:30:33" (1/1) ... [2022-01-10 02:30:33,835 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 02:30:33,921 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 02:30:34,226 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.8.ufo.UNBOUNDED.pals+Problem12_label08.c[26888,26901] [2022-01-10 02:30:34,255 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.8.ufo.UNBOUNDED.pals+Problem12_label08.c[30395,30408] [2022-01-10 02:30:34,697 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 02:30:34,706 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 02:30:34,779 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.8.ufo.UNBOUNDED.pals+Problem12_label08.c[26888,26901] [2022-01-10 02:30:34,782 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.8.ufo.UNBOUNDED.pals+Problem12_label08.c[30395,30408] [2022-01-10 02:30:35,036 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 02:30:35,056 INFO L208 MainTranslator]: Completed translation [2022-01-10 02:30:35,057 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:30:35 WrapperNode [2022-01-10 02:30:35,057 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 02:30:35,058 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 02:30:35,058 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 02:30:35,058 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 02:30:35,063 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:30:35" (1/1) ... [2022-01-10 02:30:35,100 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:30:35" (1/1) ... [2022-01-10 02:30:35,343 INFO L137 Inliner]: procedures = 40, calls = 25, calls flagged for inlining = 20, calls inlined = 20, statements flattened = 5279 [2022-01-10 02:30:35,344 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 02:30:35,344 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 02:30:35,344 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 02:30:35,344 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 02:30:35,350 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:30:35" (1/1) ... [2022-01-10 02:30:35,350 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:30:35" (1/1) ... [2022-01-10 02:30:35,464 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:30:35" (1/1) ... [2022-01-10 02:30:35,465 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:30:35" (1/1) ... [2022-01-10 02:30:35,589 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:30:35" (1/1) ... [2022-01-10 02:30:35,614 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:30:35" (1/1) ... [2022-01-10 02:30:35,658 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:30:35" (1/1) ... [2022-01-10 02:30:35,775 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 02:30:35,777 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 02:30:35,777 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 02:30:35,777 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 02:30:35,778 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:30:35" (1/1) ... [2022-01-10 02:30:35,783 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 02:30:35,789 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 02:30:35,801 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 02:30:35,808 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 02:30:35,833 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 02:30:35,833 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-10 02:30:35,833 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 02:30:35,833 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 02:30:35,983 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 02:30:35,985 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 02:30:38,736 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 02:30:38,752 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 02:30:38,753 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-01-10 02:30:38,755 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 02:30:38 BoogieIcfgContainer [2022-01-10 02:30:38,755 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 02:30:38,756 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 02:30:38,756 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 02:30:38,759 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 02:30:38,759 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 02:30:33" (1/3) ... [2022-01-10 02:30:38,759 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@448747ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 02:30:38, skipping insertion in model container [2022-01-10 02:30:38,760 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:30:35" (2/3) ... [2022-01-10 02:30:38,760 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@448747ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 02:30:38, skipping insertion in model container [2022-01-10 02:30:38,760 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 02:30:38" (3/3) ... [2022-01-10 02:30:38,761 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.8.ufo.UNBOUNDED.pals+Problem12_label08.c [2022-01-10 02:30:38,764 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 02:30:38,764 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-01-10 02:30:38,801 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 02:30:38,806 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 02:30:38,806 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-01-10 02:30:38,825 INFO L276 IsEmpty]: Start isEmpty. Operand has 965 states, 962 states have (on average 1.8960498960498962) internal successors, (1824), 964 states have internal predecessors, (1824), 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 02:30:38,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-10 02:30:38,831 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:30:38,831 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] [2022-01-10 02:30:38,832 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:30:38,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:30:38,836 INFO L85 PathProgramCache]: Analyzing trace with hash -1826483091, now seen corresponding path program 1 times [2022-01-10 02:30:38,842 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:30:38,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597771855] [2022-01-10 02:30:38,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:30:38,843 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:30:38,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:30:39,098 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 02:30:39,098 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:30:39,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597771855] [2022-01-10 02:30:39,099 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597771855] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:30:39,099 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:30:39,099 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 02:30:39,100 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238344914] [2022-01-10 02:30:39,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:30:39,105 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 02:30:39,105 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:30:39,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 02:30:39,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 02:30:39,130 INFO L87 Difference]: Start difference. First operand has 965 states, 962 states have (on average 1.8960498960498962) internal successors, (1824), 964 states have internal predecessors, (1824), 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 10.0) internal successors, (30), 2 states have internal predecessors, (30), 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 02:30:41,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:30:41,987 INFO L93 Difference]: Finished difference Result 2616 states and 5018 transitions. [2022-01-10 02:30:42,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 02:30:42,003 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 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 30 [2022-01-10 02:30:42,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:30:42,023 INFO L225 Difference]: With dead ends: 2616 [2022-01-10 02:30:42,023 INFO L226 Difference]: Without dead ends: 1650 [2022-01-10 02:30:42,030 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 02:30:42,033 INFO L933 BasicCegarLoop]: 355 mSDtfsCounter, 1059 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 2500 mSolverCounterSat, 764 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1059 SdHoareTripleChecker+Valid, 366 SdHoareTripleChecker+Invalid, 3264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 764 IncrementalHoareTripleChecker+Valid, 2500 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-01-10 02:30:42,034 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1059 Valid, 366 Invalid, 3264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [764 Valid, 2500 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-01-10 02:30:42,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1650 states. [2022-01-10 02:30:42,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1650 to 1650. [2022-01-10 02:30:42,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1650 states, 1648 states have (on average 1.8567961165048543) internal successors, (3060), 1649 states have internal predecessors, (3060), 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 02:30:42,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1650 states to 1650 states and 3060 transitions. [2022-01-10 02:30:42,143 INFO L78 Accepts]: Start accepts. Automaton has 1650 states and 3060 transitions. Word has length 30 [2022-01-10 02:30:42,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:30:42,144 INFO L470 AbstractCegarLoop]: Abstraction has 1650 states and 3060 transitions. [2022-01-10 02:30:42,144 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 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 02:30:42,144 INFO L276 IsEmpty]: Start isEmpty. Operand 1650 states and 3060 transitions. [2022-01-10 02:30:42,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-01-10 02:30:42,145 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:30:42,146 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] [2022-01-10 02:30:42,146 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 02:30:42,146 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:30:42,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:30:42,147 INFO L85 PathProgramCache]: Analyzing trace with hash 2117945689, now seen corresponding path program 1 times [2022-01-10 02:30:42,147 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:30:42,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486897176] [2022-01-10 02:30:42,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:30:42,147 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:30:42,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:30:42,210 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 02:30:42,210 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:30:42,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486897176] [2022-01-10 02:30:42,211 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486897176] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:30:42,211 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:30:42,211 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 02:30:42,211 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510020104] [2022-01-10 02:30:42,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:30:42,213 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 02:30:42,214 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:30:42,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 02:30:42,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 02:30:42,215 INFO L87 Difference]: Start difference. First operand 1650 states and 3060 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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 02:30:42,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:30:42,280 INFO L93 Difference]: Finished difference Result 1732 states and 3188 transitions. [2022-01-10 02:30:42,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 02:30:42,281 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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 46 [2022-01-10 02:30:42,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:30:42,286 INFO L225 Difference]: With dead ends: 1732 [2022-01-10 02:30:42,286 INFO L226 Difference]: Without dead ends: 1650 [2022-01-10 02:30:42,289 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 02:30:42,289 INFO L933 BasicCegarLoop]: 1689 mSDtfsCounter, 3 mSDsluCounter, 5003 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 6692 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 02:30:42,290 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 6692 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 02:30:42,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1650 states. [2022-01-10 02:30:42,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1650 to 1650. [2022-01-10 02:30:42,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1650 states, 1648 states have (on average 1.8197815533980584) internal successors, (2999), 1649 states have internal predecessors, (2999), 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 02:30:42,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1650 states to 1650 states and 2999 transitions. [2022-01-10 02:30:42,320 INFO L78 Accepts]: Start accepts. Automaton has 1650 states and 2999 transitions. Word has length 46 [2022-01-10 02:30:42,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:30:42,321 INFO L470 AbstractCegarLoop]: Abstraction has 1650 states and 2999 transitions. [2022-01-10 02:30:42,321 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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 02:30:42,321 INFO L276 IsEmpty]: Start isEmpty. Operand 1650 states and 2999 transitions. [2022-01-10 02:30:42,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-01-10 02:30:42,326 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:30:42,327 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:30:42,327 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 02:30:42,327 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:30:42,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:30:42,328 INFO L85 PathProgramCache]: Analyzing trace with hash -194181203, now seen corresponding path program 1 times [2022-01-10 02:30:42,328 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:30:42,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93048239] [2022-01-10 02:30:42,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:30:42,329 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:30:42,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:30:42,434 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:30:42,434 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:30:42,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93048239] [2022-01-10 02:30:42,434 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93048239] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:30:42,434 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:30:42,434 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 02:30:42,435 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211231107] [2022-01-10 02:30:42,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:30:42,435 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 02:30:42,435 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:30:42,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 02:30:42,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 02:30:42,436 INFO L87 Difference]: Start difference. First operand 1650 states and 2999 transitions. Second operand has 4 states, 4 states have (on average 23.75) internal successors, (95), 3 states have internal predecessors, (95), 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 02:30:46,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:30:46,515 INFO L93 Difference]: Finished difference Result 5415 states and 9987 transitions. [2022-01-10 02:30:46,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 02:30:46,515 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 3 states have internal predecessors, (95), 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 95 [2022-01-10 02:30:46,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:30:46,526 INFO L225 Difference]: With dead ends: 5415 [2022-01-10 02:30:46,527 INFO L226 Difference]: Without dead ends: 3911 [2022-01-10 02:30:46,530 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 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 02:30:46,533 INFO L933 BasicCegarLoop]: 372 mSDtfsCounter, 2688 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 3612 mSolverCounterSat, 1534 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2688 SdHoareTripleChecker+Valid, 388 SdHoareTripleChecker+Invalid, 5146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1534 IncrementalHoareTripleChecker+Valid, 3612 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-01-10 02:30:46,534 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2688 Valid, 388 Invalid, 5146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1534 Valid, 3612 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2022-01-10 02:30:46,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3911 states. [2022-01-10 02:30:46,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3911 to 3903. [2022-01-10 02:30:46,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3903 states, 3901 states have (on average 1.5957446808510638) internal successors, (6225), 3902 states have internal predecessors, (6225), 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 02:30:46,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3903 states to 3903 states and 6225 transitions. [2022-01-10 02:30:46,595 INFO L78 Accepts]: Start accepts. Automaton has 3903 states and 6225 transitions. Word has length 95 [2022-01-10 02:30:46,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:30:46,596 INFO L470 AbstractCegarLoop]: Abstraction has 3903 states and 6225 transitions. [2022-01-10 02:30:46,597 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 3 states have internal predecessors, (95), 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 02:30:46,597 INFO L276 IsEmpty]: Start isEmpty. Operand 3903 states and 6225 transitions. [2022-01-10 02:30:46,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-01-10 02:30:46,598 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:30:46,598 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:30:46,599 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 02:30:46,599 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:30:46,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:30:46,599 INFO L85 PathProgramCache]: Analyzing trace with hash 909369916, now seen corresponding path program 1 times [2022-01-10 02:30:46,599 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:30:46,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092309058] [2022-01-10 02:30:46,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:30:46,600 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:30:46,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:30:46,720 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-01-10 02:30:46,720 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:30:46,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092309058] [2022-01-10 02:30:46,720 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092309058] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:30:46,720 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:30:46,720 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 02:30:46,720 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013161821] [2022-01-10 02:30:46,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:30:46,721 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 02:30:46,721 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:30:46,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 02:30:46,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 02:30:46,721 INFO L87 Difference]: Start difference. First operand 3903 states and 6225 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 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 02:30:49,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:30:49,196 INFO L93 Difference]: Finished difference Result 10664 states and 17531 transitions. [2022-01-10 02:30:49,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 02:30:49,197 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 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 101 [2022-01-10 02:30:49,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:30:49,215 INFO L225 Difference]: With dead ends: 10664 [2022-01-10 02:30:49,215 INFO L226 Difference]: Without dead ends: 6907 [2022-01-10 02:30:49,220 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 02:30:49,221 INFO L933 BasicCegarLoop]: 706 mSDtfsCounter, 916 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2289 mSolverCounterSat, 643 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 916 SdHoareTripleChecker+Valid, 713 SdHoareTripleChecker+Invalid, 2932 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 643 IncrementalHoareTripleChecker+Valid, 2289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-01-10 02:30:49,221 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [916 Valid, 713 Invalid, 2932 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [643 Valid, 2289 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-01-10 02:30:49,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6907 states. [2022-01-10 02:30:49,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6907 to 6907. [2022-01-10 02:30:49,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6907 states, 6905 states have (on average 1.4477914554670528) internal successors, (9997), 6906 states have internal predecessors, (9997), 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 02:30:49,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6907 states to 6907 states and 9997 transitions. [2022-01-10 02:30:49,366 INFO L78 Accepts]: Start accepts. Automaton has 6907 states and 9997 transitions. Word has length 101 [2022-01-10 02:30:49,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:30:49,366 INFO L470 AbstractCegarLoop]: Abstraction has 6907 states and 9997 transitions. [2022-01-10 02:30:49,366 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 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 02:30:49,366 INFO L276 IsEmpty]: Start isEmpty. Operand 6907 states and 9997 transitions. [2022-01-10 02:30:49,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-01-10 02:30:49,367 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:30:49,367 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:30:49,367 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 02:30:49,367 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:30:49,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:30:49,368 INFO L85 PathProgramCache]: Analyzing trace with hash 211182729, now seen corresponding path program 1 times [2022-01-10 02:30:49,368 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:30:49,368 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851889038] [2022-01-10 02:30:49,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:30:49,368 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:30:49,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:30:49,447 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 02:30:49,448 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:30:49,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851889038] [2022-01-10 02:30:49,448 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851889038] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:30:49,449 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:30:49,449 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 02:30:49,449 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110445931] [2022-01-10 02:30:49,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:30:49,449 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 02:30:49,450 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:30:49,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 02:30:49,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 02:30:49,450 INFO L87 Difference]: Start difference. First operand 6907 states and 9997 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:30:49,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:30:49,486 INFO L93 Difference]: Finished difference Result 7057 states and 10235 transitions. [2022-01-10 02:30:49,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 02:30:49,486 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2022-01-10 02:30:49,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:30:49,506 INFO L225 Difference]: With dead ends: 7057 [2022-01-10 02:30:49,506 INFO L226 Difference]: Without dead ends: 6979 [2022-01-10 02:30:49,510 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 02:30:49,510 INFO L933 BasicCegarLoop]: 1724 mSDtfsCounter, 1549 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1549 SdHoareTripleChecker+Valid, 1850 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 02:30:49,511 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1549 Valid, 1850 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 02:30:49,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6979 states. [2022-01-10 02:30:49,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6979 to 6977. [2022-01-10 02:30:49,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6977 states, 6975 states have (on average 1.4493189964157707) internal successors, (10109), 6976 states have internal predecessors, (10109), 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 02:30:49,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6977 states to 6977 states and 10109 transitions. [2022-01-10 02:30:49,628 INFO L78 Accepts]: Start accepts. Automaton has 6977 states and 10109 transitions. Word has length 106 [2022-01-10 02:30:49,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:30:49,629 INFO L470 AbstractCegarLoop]: Abstraction has 6977 states and 10109 transitions. [2022-01-10 02:30:49,629 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:30:49,629 INFO L276 IsEmpty]: Start isEmpty. Operand 6977 states and 10109 transitions. [2022-01-10 02:30:49,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-01-10 02:30:49,630 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:30:49,630 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:30:49,630 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 02:30:49,630 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:30:49,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:30:49,631 INFO L85 PathProgramCache]: Analyzing trace with hash 1458691583, now seen corresponding path program 1 times [2022-01-10 02:30:49,631 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:30:49,634 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326728657] [2022-01-10 02:30:49,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:30:49,637 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:30:49,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:30:49,688 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 02:30:49,688 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:30:49,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326728657] [2022-01-10 02:30:49,688 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326728657] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:30:49,688 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:30:49,688 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 02:30:49,689 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074995266] [2022-01-10 02:30:49,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:30:49,690 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 02:30:49,690 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:30:49,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 02:30:49,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 02:30:49,690 INFO L87 Difference]: Start difference. First operand 6977 states and 10109 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:30:49,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:30:49,726 INFO L93 Difference]: Finished difference Result 7261 states and 10561 transitions. [2022-01-10 02:30:49,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 02:30:49,727 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2022-01-10 02:30:49,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:30:49,753 INFO L225 Difference]: With dead ends: 7261 [2022-01-10 02:30:49,753 INFO L226 Difference]: Without dead ends: 7113 [2022-01-10 02:30:49,756 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 02:30:49,757 INFO L933 BasicCegarLoop]: 1719 mSDtfsCounter, 1545 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1545 SdHoareTripleChecker+Valid, 1849 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 02:30:49,758 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1545 Valid, 1849 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 02:30:49,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7113 states. [2022-01-10 02:30:49,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7113 to 7111. [2022-01-10 02:30:49,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7111 states, 7109 states have (on average 1.4519623013082008) internal successors, (10322), 7110 states have internal predecessors, (10322), 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 02:30:49,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7111 states to 7111 states and 10322 transitions. [2022-01-10 02:30:49,871 INFO L78 Accepts]: Start accepts. Automaton has 7111 states and 10322 transitions. Word has length 106 [2022-01-10 02:30:49,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:30:49,871 INFO L470 AbstractCegarLoop]: Abstraction has 7111 states and 10322 transitions. [2022-01-10 02:30:49,872 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:30:49,872 INFO L276 IsEmpty]: Start isEmpty. Operand 7111 states and 10322 transitions. [2022-01-10 02:30:49,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-01-10 02:30:49,872 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:30:49,872 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:30:49,873 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 02:30:49,873 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:30:49,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:30:49,873 INFO L85 PathProgramCache]: Analyzing trace with hash 717259381, now seen corresponding path program 1 times [2022-01-10 02:30:49,873 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:30:49,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898656350] [2022-01-10 02:30:49,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:30:49,873 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:30:49,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:30:49,931 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 02:30:49,932 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:30:49,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898656350] [2022-01-10 02:30:49,932 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [898656350] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:30:49,932 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:30:49,932 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 02:30:49,932 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004382625] [2022-01-10 02:30:49,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:30:49,933 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 02:30:49,933 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:30:49,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 02:30:49,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 02:30:49,933 INFO L87 Difference]: Start difference. First operand 7111 states and 10322 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:30:49,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:30:49,987 INFO L93 Difference]: Finished difference Result 7651 states and 11180 transitions. [2022-01-10 02:30:49,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 02:30:49,987 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2022-01-10 02:30:49,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:30:49,998 INFO L225 Difference]: With dead ends: 7651 [2022-01-10 02:30:49,998 INFO L226 Difference]: Without dead ends: 7369 [2022-01-10 02:30:50,001 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 02:30:50,004 INFO L933 BasicCegarLoop]: 1714 mSDtfsCounter, 1541 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1541 SdHoareTripleChecker+Valid, 1848 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 02:30:50,004 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1541 Valid, 1848 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 02:30:50,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7369 states. [2022-01-10 02:30:50,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7369 to 7367. [2022-01-10 02:30:50,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7367 states, 7365 states have (on average 1.456347589952478) internal successors, (10726), 7366 states have internal predecessors, (10726), 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 02:30:50,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7367 states to 7367 states and 10726 transitions. [2022-01-10 02:30:50,102 INFO L78 Accepts]: Start accepts. Automaton has 7367 states and 10726 transitions. Word has length 106 [2022-01-10 02:30:50,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:30:50,102 INFO L470 AbstractCegarLoop]: Abstraction has 7367 states and 10726 transitions. [2022-01-10 02:30:50,103 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:30:50,103 INFO L276 IsEmpty]: Start isEmpty. Operand 7367 states and 10726 transitions. [2022-01-10 02:30:50,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-01-10 02:30:50,105 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:30:50,106 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:30:50,106 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 02:30:50,106 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:30:50,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:30:50,107 INFO L85 PathProgramCache]: Analyzing trace with hash -28323349, now seen corresponding path program 1 times [2022-01-10 02:30:50,107 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:30:50,107 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091765965] [2022-01-10 02:30:50,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:30:50,107 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:30:50,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:30:50,152 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 02:30:50,152 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:30:50,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091765965] [2022-01-10 02:30:50,153 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091765965] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:30:50,153 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:30:50,153 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 02:30:50,153 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87817271] [2022-01-10 02:30:50,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:30:50,153 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 02:30:50,153 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:30:50,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 02:30:50,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 02:30:50,154 INFO L87 Difference]: Start difference. First operand 7367 states and 10726 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:30:50,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:30:50,203 INFO L93 Difference]: Finished difference Result 8395 states and 12352 transitions. [2022-01-10 02:30:50,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 02:30:50,203 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2022-01-10 02:30:50,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:30:50,215 INFO L225 Difference]: With dead ends: 8395 [2022-01-10 02:30:50,215 INFO L226 Difference]: Without dead ends: 7857 [2022-01-10 02:30:50,217 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 02:30:50,218 INFO L933 BasicCegarLoop]: 1709 mSDtfsCounter, 1537 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1537 SdHoareTripleChecker+Valid, 1847 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 02:30:50,218 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1537 Valid, 1847 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 02:30:50,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7857 states. [2022-01-10 02:30:50,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7857 to 7855. [2022-01-10 02:30:50,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7855 states, 7853 states have (on average 1.4631351076021903) internal successors, (11490), 7854 states have internal predecessors, (11490), 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 02:30:50,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7855 states to 7855 states and 11490 transitions. [2022-01-10 02:30:50,322 INFO L78 Accepts]: Start accepts. Automaton has 7855 states and 11490 transitions. Word has length 106 [2022-01-10 02:30:50,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:30:50,323 INFO L470 AbstractCegarLoop]: Abstraction has 7855 states and 11490 transitions. [2022-01-10 02:30:50,323 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:30:50,323 INFO L276 IsEmpty]: Start isEmpty. Operand 7855 states and 11490 transitions. [2022-01-10 02:30:50,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-01-10 02:30:50,324 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:30:50,324 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:30:50,326 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 02:30:50,326 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:30:50,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:30:50,327 INFO L85 PathProgramCache]: Analyzing trace with hash -1968354207, now seen corresponding path program 1 times [2022-01-10 02:30:50,327 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:30:50,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466903398] [2022-01-10 02:30:50,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:30:50,327 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:30:50,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:30:50,370 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 02:30:50,370 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:30:50,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466903398] [2022-01-10 02:30:50,370 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466903398] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:30:50,370 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:30:50,370 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 02:30:50,371 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622503804] [2022-01-10 02:30:50,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:30:50,371 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 02:30:50,371 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:30:50,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 02:30:50,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 02:30:50,372 INFO L87 Difference]: Start difference. First operand 7855 states and 11490 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:30:50,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:30:50,486 INFO L93 Difference]: Finished difference Result 9811 states and 14564 transitions. [2022-01-10 02:30:50,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 02:30:50,487 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2022-01-10 02:30:50,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:30:50,499 INFO L225 Difference]: With dead ends: 9811 [2022-01-10 02:30:50,499 INFO L226 Difference]: Without dead ends: 8785 [2022-01-10 02:30:50,501 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 02:30:50,502 INFO L933 BasicCegarLoop]: 1704 mSDtfsCounter, 1533 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1533 SdHoareTripleChecker+Valid, 1846 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 02:30:50,502 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1533 Valid, 1846 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 02:30:50,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8785 states. [2022-01-10 02:30:50,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8785 to 8783. [2022-01-10 02:30:50,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8783 states, 8781 states have (on average 1.4724974376494704) internal successors, (12930), 8782 states have internal predecessors, (12930), 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 02:30:50,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8783 states to 8783 states and 12930 transitions. [2022-01-10 02:30:50,644 INFO L78 Accepts]: Start accepts. Automaton has 8783 states and 12930 transitions. Word has length 106 [2022-01-10 02:30:50,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:30:50,644 INFO L470 AbstractCegarLoop]: Abstraction has 8783 states and 12930 transitions. [2022-01-10 02:30:50,645 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:30:50,645 INFO L276 IsEmpty]: Start isEmpty. Operand 8783 states and 12930 transitions. [2022-01-10 02:30:50,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-01-10 02:30:50,645 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:30:50,646 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:30:50,646 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 02:30:50,646 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:30:50,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:30:50,646 INFO L85 PathProgramCache]: Analyzing trace with hash 732328407, now seen corresponding path program 1 times [2022-01-10 02:30:50,646 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:30:50,646 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700746458] [2022-01-10 02:30:50,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:30:50,647 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:30:50,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:30:50,689 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 02:30:50,690 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:30:50,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700746458] [2022-01-10 02:30:50,690 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [700746458] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:30:50,690 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:30:50,690 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 02:30:50,690 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027072823] [2022-01-10 02:30:50,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:30:50,690 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 02:30:50,691 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:30:50,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 02:30:50,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 02:30:50,691 INFO L87 Difference]: Start difference. First operand 8783 states and 12930 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:30:50,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:30:50,828 INFO L93 Difference]: Finished difference Result 12499 states and 18724 transitions. [2022-01-10 02:30:50,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 02:30:50,828 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2022-01-10 02:30:50,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:30:50,844 INFO L225 Difference]: With dead ends: 12499 [2022-01-10 02:30:50,845 INFO L226 Difference]: Without dead ends: 10545 [2022-01-10 02:30:50,850 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 02:30:50,850 INFO L933 BasicCegarLoop]: 1699 mSDtfsCounter, 1529 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1529 SdHoareTripleChecker+Valid, 1845 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 02:30:50,851 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1529 Valid, 1845 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 02:30:50,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10545 states. [2022-01-10 02:30:51,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10545 to 10543. [2022-01-10 02:30:51,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10543 states, 10541 states have (on average 1.4831609904183665) internal successors, (15634), 10542 states have internal predecessors, (15634), 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 02:30:51,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10543 states to 10543 states and 15634 transitions. [2022-01-10 02:30:51,040 INFO L78 Accepts]: Start accepts. Automaton has 10543 states and 15634 transitions. Word has length 106 [2022-01-10 02:30:51,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:30:51,040 INFO L470 AbstractCegarLoop]: Abstraction has 10543 states and 15634 transitions. [2022-01-10 02:30:51,041 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:30:51,041 INFO L276 IsEmpty]: Start isEmpty. Operand 10543 states and 15634 transitions. [2022-01-10 02:30:51,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-01-10 02:30:51,041 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:30:51,041 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:30:51,042 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 02:30:51,042 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:30:51,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:30:51,042 INFO L85 PathProgramCache]: Analyzing trace with hash 1070121549, now seen corresponding path program 1 times [2022-01-10 02:30:51,042 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:30:51,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480424721] [2022-01-10 02:30:51,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:30:51,043 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:30:51,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:30:51,080 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 02:30:51,080 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:30:51,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480424721] [2022-01-10 02:30:51,080 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480424721] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:30:51,080 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:30:51,080 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 02:30:51,080 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862552757] [2022-01-10 02:30:51,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:30:51,081 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 02:30:51,081 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:30:51,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 02:30:51,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 02:30:51,082 INFO L87 Difference]: Start difference. First operand 10543 states and 15634 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:30:51,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:30:51,268 INFO L93 Difference]: Finished difference Result 17587 states and 26516 transitions. [2022-01-10 02:30:51,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 02:30:51,269 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2022-01-10 02:30:51,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:30:51,292 INFO L225 Difference]: With dead ends: 17587 [2022-01-10 02:30:51,292 INFO L226 Difference]: Without dead ends: 13873 [2022-01-10 02:30:51,300 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 02:30:51,300 INFO L933 BasicCegarLoop]: 1694 mSDtfsCounter, 1525 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1525 SdHoareTripleChecker+Valid, 1844 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 02:30:51,301 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1525 Valid, 1844 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 02:30:51,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13873 states. [2022-01-10 02:30:51,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13873 to 13871. [2022-01-10 02:30:51,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13871 states, 13869 states have (on average 1.4918162809142692) internal successors, (20690), 13870 states have internal predecessors, (20690), 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 02:30:51,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13871 states to 13871 states and 20690 transitions. [2022-01-10 02:30:51,630 INFO L78 Accepts]: Start accepts. Automaton has 13871 states and 20690 transitions. Word has length 106 [2022-01-10 02:30:51,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:30:51,631 INFO L470 AbstractCegarLoop]: Abstraction has 13871 states and 20690 transitions. [2022-01-10 02:30:51,631 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:30:51,631 INFO L276 IsEmpty]: Start isEmpty. Operand 13871 states and 20690 transitions. [2022-01-10 02:30:51,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-01-10 02:30:51,632 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:30:51,632 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:30:51,632 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 02:30:51,632 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:30:51,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:30:51,632 INFO L85 PathProgramCache]: Analyzing trace with hash 1478760321, now seen corresponding path program 1 times [2022-01-10 02:30:51,632 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:30:51,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315031619] [2022-01-10 02:30:51,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:30:51,633 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:30:51,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:30:51,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:30:51,718 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:30:51,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315031619] [2022-01-10 02:30:51,718 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315031619] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:30:51,718 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:30:51,719 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-10 02:30:51,719 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599828445] [2022-01-10 02:30:51,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:30:51,719 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-10 02:30:51,719 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:30:51,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-10 02:30:51,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-01-10 02:30:51,720 INFO L87 Difference]: Start difference. First operand 13871 states and 20690 transitions. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:30:55,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:30:55,680 INFO L93 Difference]: Finished difference Result 126543 states and 193762 transitions. [2022-01-10 02:30:55,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-10 02:30:55,680 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2022-01-10 02:30:55,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:30:55,899 INFO L225 Difference]: With dead ends: 126543 [2022-01-10 02:30:55,900 INFO L226 Difference]: Without dead ends: 119501 [2022-01-10 02:30:55,933 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=162, Invalid=344, Unknown=0, NotChecked=0, Total=506 [2022-01-10 02:30:55,934 INFO L933 BasicCegarLoop]: 1626 mSDtfsCounter, 15488 mSDsluCounter, 3243 mSDsCounter, 0 mSdLazyCounter, 218 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15488 SdHoareTripleChecker+Valid, 4869 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 02:30:55,934 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15488 Valid, 4869 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 218 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 02:30:56,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119501 states. [2022-01-10 02:30:57,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119501 to 20911. [2022-01-10 02:30:57,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20911 states, 20909 states have (on average 1.494571715529198) internal successors, (31250), 20910 states have internal predecessors, (31250), 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 02:30:57,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20911 states to 20911 states and 31250 transitions. [2022-01-10 02:30:57,687 INFO L78 Accepts]: Start accepts. Automaton has 20911 states and 31250 transitions. Word has length 106 [2022-01-10 02:30:57,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:30:57,687 INFO L470 AbstractCegarLoop]: Abstraction has 20911 states and 31250 transitions. [2022-01-10 02:30:57,687 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:30:57,687 INFO L276 IsEmpty]: Start isEmpty. Operand 20911 states and 31250 transitions. [2022-01-10 02:30:57,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-01-10 02:30:57,688 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:30:57,688 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] [2022-01-10 02:30:57,688 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 02:30:57,689 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:30:57,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:30:57,689 INFO L85 PathProgramCache]: Analyzing trace with hash -1961193007, now seen corresponding path program 1 times [2022-01-10 02:30:57,689 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:30:57,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746679856] [2022-01-10 02:30:57,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:30:57,690 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:30:57,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:30:57,740 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 02:30:57,740 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:30:57,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746679856] [2022-01-10 02:30:57,740 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746679856] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:30:57,740 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:30:57,740 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 02:30:57,740 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662989119] [2022-01-10 02:30:57,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:30:57,741 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 02:30:57,741 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:30:57,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 02:30:57,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 02:30:57,741 INFO L87 Difference]: Start difference. First operand 20911 states and 31250 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 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 02:30:59,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:30:59,662 INFO L93 Difference]: Finished difference Result 47667 states and 71572 transitions. [2022-01-10 02:30:59,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 02:30:59,663 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 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 108 [2022-01-10 02:30:59,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:30:59,705 INFO L225 Difference]: With dead ends: 47667 [2022-01-10 02:30:59,706 INFO L226 Difference]: Without dead ends: 33585 [2022-01-10 02:30:59,720 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 02:30:59,723 INFO L933 BasicCegarLoop]: 1627 mSDtfsCounter, 1516 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1516 SdHoareTripleChecker+Valid, 1744 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 02:30:59,723 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1516 Valid, 1744 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 02:30:59,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33585 states. [2022-01-10 02:31:01,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33585 to 33327. [2022-01-10 02:31:01,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33327 states, 33325 states have (on average 1.4793098274568641) internal successors, (49298), 33326 states have internal predecessors, (49298), 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 02:31:01,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33327 states to 33327 states and 49298 transitions. [2022-01-10 02:31:01,918 INFO L78 Accepts]: Start accepts. Automaton has 33327 states and 49298 transitions. Word has length 108 [2022-01-10 02:31:01,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:31:01,918 INFO L470 AbstractCegarLoop]: Abstraction has 33327 states and 49298 transitions. [2022-01-10 02:31:01,919 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 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 02:31:01,919 INFO L276 IsEmpty]: Start isEmpty. Operand 33327 states and 49298 transitions. [2022-01-10 02:31:01,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-01-10 02:31:01,920 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:31:01,920 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] [2022-01-10 02:31:01,920 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 02:31:01,920 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:31:01,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:31:01,921 INFO L85 PathProgramCache]: Analyzing trace with hash -1894699495, now seen corresponding path program 1 times [2022-01-10 02:31:01,921 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:31:01,921 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911084316] [2022-01-10 02:31:01,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:31:01,921 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:31:01,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:31:02,173 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 02:31:02,173 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:31:02,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911084316] [2022-01-10 02:31:02,173 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911084316] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:31:02,173 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:31:02,173 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-10 02:31:02,173 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311039606] [2022-01-10 02:31:02,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:31:02,174 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-10 02:31:02,174 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:31:02,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-10 02:31:02,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-01-10 02:31:02,175 INFO L87 Difference]: Start difference. First operand 33327 states and 49298 transitions. Second operand has 10 states, 10 states have (on average 10.8) internal successors, (108), 10 states have internal predecessors, (108), 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 02:31:04,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:31:04,427 INFO L93 Difference]: Finished difference Result 59827 states and 88724 transitions. [2022-01-10 02:31:04,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 02:31:04,428 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.8) internal successors, (108), 10 states have internal predecessors, (108), 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 108 [2022-01-10 02:31:04,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:31:04,465 INFO L225 Difference]: With dead ends: 59827 [2022-01-10 02:31:04,465 INFO L226 Difference]: Without dead ends: 33329 [2022-01-10 02:31:04,486 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=84, Invalid=156, Unknown=0, NotChecked=0, Total=240 [2022-01-10 02:31:04,487 INFO L933 BasicCegarLoop]: 1620 mSDtfsCounter, 11193 mSDsluCounter, 850 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11193 SdHoareTripleChecker+Valid, 2470 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 02:31:04,487 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11193 Valid, 2470 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 02:31:04,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33329 states. [2022-01-10 02:31:06,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33329 to 33327. [2022-01-10 02:31:06,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33327 states, 33325 states have (on average 1.4716279069767442) internal successors, (49042), 33326 states have internal predecessors, (49042), 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 02:31:06,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33327 states to 33327 states and 49042 transitions. [2022-01-10 02:31:06,437 INFO L78 Accepts]: Start accepts. Automaton has 33327 states and 49042 transitions. Word has length 108 [2022-01-10 02:31:06,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:31:06,437 INFO L470 AbstractCegarLoop]: Abstraction has 33327 states and 49042 transitions. [2022-01-10 02:31:06,437 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.8) internal successors, (108), 10 states have internal predecessors, (108), 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 02:31:06,437 INFO L276 IsEmpty]: Start isEmpty. Operand 33327 states and 49042 transitions. [2022-01-10 02:31:06,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-01-10 02:31:06,439 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:31:06,440 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:31:06,440 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-10 02:31:06,440 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:31:06,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:31:06,441 INFO L85 PathProgramCache]: Analyzing trace with hash 979135041, now seen corresponding path program 1 times [2022-01-10 02:31:06,441 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:31:06,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744463356] [2022-01-10 02:31:06,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:31:06,441 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:31:06,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:31:06,520 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 02:31:06,521 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:31:06,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744463356] [2022-01-10 02:31:06,521 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744463356] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:31:06,521 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:31:06,521 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 02:31:06,521 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7004166] [2022-01-10 02:31:06,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:31:06,521 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 02:31:06,521 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:31:06,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 02:31:06,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-01-10 02:31:06,522 INFO L87 Difference]: Start difference. First operand 33327 states and 49042 transitions. Second operand has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 5 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:31:09,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:31:09,066 INFO L93 Difference]: Finished difference Result 59825 states and 88211 transitions. [2022-01-10 02:31:09,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 02:31:09,067 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 5 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2022-01-10 02:31:09,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:31:09,105 INFO L225 Difference]: With dead ends: 59825 [2022-01-10 02:31:09,105 INFO L226 Difference]: Without dead ends: 33327 [2022-01-10 02:31:09,123 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-01-10 02:31:09,123 INFO L933 BasicCegarLoop]: 1568 mSDtfsCounter, 4752 mSDsluCounter, 1555 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4752 SdHoareTripleChecker+Valid, 3123 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 02:31:09,123 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4752 Valid, 3123 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 02:31:09,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33327 states. [2022-01-10 02:31:11,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33327 to 33327. [2022-01-10 02:31:11,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33327 states, 33325 states have (on average 1.4639459864966242) internal successors, (48786), 33326 states have internal predecessors, (48786), 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 02:31:11,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33327 states to 33327 states and 48786 transitions. [2022-01-10 02:31:11,317 INFO L78 Accepts]: Start accepts. Automaton has 33327 states and 48786 transitions. Word has length 109 [2022-01-10 02:31:11,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:31:11,317 INFO L470 AbstractCegarLoop]: Abstraction has 33327 states and 48786 transitions. [2022-01-10 02:31:11,317 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 5 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:31:11,317 INFO L276 IsEmpty]: Start isEmpty. Operand 33327 states and 48786 transitions. [2022-01-10 02:31:11,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-01-10 02:31:11,318 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:31:11,318 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:31:11,318 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-10 02:31:11,318 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:31:11,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:31:11,319 INFO L85 PathProgramCache]: Analyzing trace with hash 278070463, now seen corresponding path program 1 times [2022-01-10 02:31:11,319 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:31:11,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192975901] [2022-01-10 02:31:11,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:31:11,319 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:31:11,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:31:11,372 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 02:31:11,372 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:31:11,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192975901] [2022-01-10 02:31:11,372 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192975901] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:31:11,372 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:31:11,372 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 02:31:11,372 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949396225] [2022-01-10 02:31:11,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:31:11,372 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 02:31:11,372 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:31:11,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 02:31:11,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 02:31:11,373 INFO L87 Difference]: Start difference. First operand 33327 states and 48786 transitions. Second operand has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:31:15,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:31:15,168 INFO L93 Difference]: Finished difference Result 52953 states and 77255 transitions. [2022-01-10 02:31:15,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 02:31:15,168 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2022-01-10 02:31:15,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:31:15,240 INFO L225 Difference]: With dead ends: 52953 [2022-01-10 02:31:15,241 INFO L226 Difference]: Without dead ends: 52951 [2022-01-10 02:31:15,256 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-10 02:31:15,257 INFO L933 BasicCegarLoop]: 1688 mSDtfsCounter, 339 mSDsluCounter, 4889 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 339 SdHoareTripleChecker+Valid, 6577 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 02:31:15,257 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [339 Valid, 6577 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 02:31:15,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52951 states. [2022-01-10 02:31:17,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52951 to 34095. [2022-01-10 02:31:17,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34095 states, 34093 states have (on average 1.4497404159211569) internal successors, (49426), 34094 states have internal predecessors, (49426), 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 02:31:17,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34095 states to 34095 states and 49426 transitions. [2022-01-10 02:31:17,882 INFO L78 Accepts]: Start accepts. Automaton has 34095 states and 49426 transitions. Word has length 109 [2022-01-10 02:31:17,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:31:17,883 INFO L470 AbstractCegarLoop]: Abstraction has 34095 states and 49426 transitions. [2022-01-10 02:31:17,883 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:31:17,883 INFO L276 IsEmpty]: Start isEmpty. Operand 34095 states and 49426 transitions. [2022-01-10 02:31:17,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-10 02:31:17,884 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:31:17,884 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:31:17,884 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-10 02:31:17,884 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:31:17,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:31:17,885 INFO L85 PathProgramCache]: Analyzing trace with hash 171324818, now seen corresponding path program 1 times [2022-01-10 02:31:17,885 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:31:17,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157633236] [2022-01-10 02:31:17,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:31:17,885 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:31:17,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:31:17,919 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 02:31:17,919 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:31:17,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157633236] [2022-01-10 02:31:17,919 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157633236] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:31:17,919 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:31:17,919 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 02:31:17,919 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044865266] [2022-01-10 02:31:17,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:31:17,920 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 02:31:17,920 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:31:17,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 02:31:17,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 02:31:17,920 INFO L87 Difference]: Start difference. First operand 34095 states and 49426 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:31:21,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:31:21,684 INFO L93 Difference]: Finished difference Result 61750 states and 89880 transitions. [2022-01-10 02:31:21,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 02:31:21,685 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2022-01-10 02:31:21,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:31:21,741 INFO L225 Difference]: With dead ends: 61750 [2022-01-10 02:31:21,741 INFO L226 Difference]: Without dead ends: 46899 [2022-01-10 02:31:21,760 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 02:31:21,761 INFO L933 BasicCegarLoop]: 1731 mSDtfsCounter, 1549 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1549 SdHoareTripleChecker+Valid, 1852 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 02:31:21,763 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1549 Valid, 1852 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 02:31:21,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46899 states. [2022-01-10 02:31:25,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46899 to 46897. [2022-01-10 02:31:25,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46897 states, 46895 states have (on average 1.4443330845505917) internal successors, (67732), 46896 states have internal predecessors, (67732), 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 02:31:25,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46897 states to 46897 states and 67732 transitions. [2022-01-10 02:31:25,675 INFO L78 Accepts]: Start accepts. Automaton has 46897 states and 67732 transitions. Word has length 110 [2022-01-10 02:31:25,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:31:25,675 INFO L470 AbstractCegarLoop]: Abstraction has 46897 states and 67732 transitions. [2022-01-10 02:31:25,675 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:31:25,675 INFO L276 IsEmpty]: Start isEmpty. Operand 46897 states and 67732 transitions. [2022-01-10 02:31:25,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2022-01-10 02:31:25,690 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:31:25,690 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:31:25,690 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-10 02:31:25,691 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:31:25,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:31:25,691 INFO L85 PathProgramCache]: Analyzing trace with hash 635734382, now seen corresponding path program 1 times [2022-01-10 02:31:25,691 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:31:25,691 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656436301] [2022-01-10 02:31:25,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:31:25,691 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:31:25,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:31:25,820 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-01-10 02:31:25,820 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:31:25,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656436301] [2022-01-10 02:31:25,820 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656436301] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:31:25,820 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:31:25,820 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-10 02:31:25,820 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788428835] [2022-01-10 02:31:25,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:31:25,821 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-10 02:31:25,821 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:31:25,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-10 02:31:25,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-01-10 02:31:25,821 INFO L87 Difference]: Start difference. First operand 46897 states and 67732 transitions. Second operand has 10 states, 10 states have (on average 13.8) internal successors, (138), 10 states have internal predecessors, (138), 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)