/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/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_BITWISE.epf -i ../../../trunk/examples/svcomp/seq-mthreaded/pals_floodmax.5.1.ufo.BOUNDED-10.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 12:43:16,028 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 12:43:16,030 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 12:43:16,067 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 12:43:16,067 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 12:43:16,068 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 12:43:16,069 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 12:43:16,070 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 12:43:16,086 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 12:43:16,090 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 12:43:16,090 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 12:43:16,093 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 12:43:16,093 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 12:43:16,094 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 12:43:16,095 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 12:43:16,095 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 12:43:16,096 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 12:43:16,096 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 12:43:16,097 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 12:43:16,098 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 12:43:16,099 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 12:43:16,100 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 12:43:16,101 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 12:43:16,101 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 12:43:16,103 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 12:43:16,108 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 12:43:16,108 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 12:43:16,109 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 12:43:16,109 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_BITWISE.epf [2022-01-10 12:43:16,122 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 12:43:16,122 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 12:43:16,122 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 12:43:16,122 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 12:43:16,123 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 12:43:16,123 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 12:43:16,123 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 12:43:16,124 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 12:43:16,124 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 12:43:16,124 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 12:43:16,124 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 12:43:16,124 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 12:43:16,124 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 12:43:16,124 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 12:43:16,124 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 12:43:16,124 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 12:43:16,124 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 12:43:16,125 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 12:43:16,125 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 12:43:16,125 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 12:43:16,125 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 12:43:16,125 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 12:43:16,125 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 12:43:16,125 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 12:43:16,125 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 12:43:16,125 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 12:43:16,125 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 12:43:16,126 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 12:43:16,126 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 12:43:16,126 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 12:43:16,126 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 12:43:16,126 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 12:43:16,126 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 12:43:16,126 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_BITWISE 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 12:43:16,281 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 12:43:16,306 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 12:43:16,308 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 12:43:16,308 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 12:43:16,310 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 12:43:16,311 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_floodmax.5.1.ufo.BOUNDED-10.pals.c [2022-01-10 12:43:16,359 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/35e28760d/64198c6c485e41b093264c77a83c1673/FLAG3be53b06d [2022-01-10 12:43:16,788 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 12:43:16,788 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_floodmax.5.1.ufo.BOUNDED-10.pals.c [2022-01-10 12:43:16,814 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/35e28760d/64198c6c485e41b093264c77a83c1673/FLAG3be53b06d [2022-01-10 12:43:16,824 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/35e28760d/64198c6c485e41b093264c77a83c1673 [2022-01-10 12:43:16,826 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 12:43:16,827 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 12:43:16,829 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 12:43:16,829 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 12:43:16,832 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 12:43:16,832 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:43:16" (1/1) ... [2022-01-10 12:43:16,833 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6cf38f1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:43:16, skipping insertion in model container [2022-01-10 12:43:16,833 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:43:16" (1/1) ... [2022-01-10 12:43:16,838 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 12:43:16,903 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 12:43:17,193 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_floodmax.5.1.ufo.BOUNDED-10.pals.c[52017,52030] [2022-01-10 12:43:17,195 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 12:43:17,203 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 12:43:17,282 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_floodmax.5.1.ufo.BOUNDED-10.pals.c[52017,52030] [2022-01-10 12:43:17,282 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 12:43:17,301 INFO L208 MainTranslator]: Completed translation [2022-01-10 12:43:17,301 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:43:17 WrapperNode [2022-01-10 12:43:17,301 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 12:43:17,302 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 12:43:17,302 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 12:43:17,302 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 12:43:17,311 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:43:17" (1/1) ... [2022-01-10 12:43:17,336 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:43:17" (1/1) ... [2022-01-10 12:43:17,389 INFO L137 Inliner]: procedures = 24, calls = 16, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 1979 [2022-01-10 12:43:17,389 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 12:43:17,389 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 12:43:17,390 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 12:43:17,390 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 12:43:17,400 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:43:17" (1/1) ... [2022-01-10 12:43:17,400 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:43:17" (1/1) ... [2022-01-10 12:43:17,406 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:43:17" (1/1) ... [2022-01-10 12:43:17,406 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:43:17" (1/1) ... [2022-01-10 12:43:17,423 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:43:17" (1/1) ... [2022-01-10 12:43:17,447 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:43:17" (1/1) ... [2022-01-10 12:43:17,452 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:43:17" (1/1) ... [2022-01-10 12:43:17,461 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 12:43:17,461 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 12:43:17,461 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 12:43:17,462 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 12:43:17,462 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:43:17" (1/1) ... [2022-01-10 12:43:17,479 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 12:43:17,487 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 12:43:17,497 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 12:43:17,542 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 12:43:17,568 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 12:43:17,568 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 12:43:17,568 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 12:43:17,568 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 12:43:17,744 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 12:43:17,745 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 12:43:18,912 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 12:43:18,927 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 12:43:18,929 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 12:43:18,932 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:43:18 BoogieIcfgContainer [2022-01-10 12:43:18,932 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 12:43:18,933 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 12:43:18,933 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 12:43:18,934 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 12:43:18,936 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:43:18" (1/1) ... [2022-01-10 12:43:19,472 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 12:43:19 BasicIcfg [2022-01-10 12:43:19,473 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 12:43:19,475 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 12:43:19,475 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 12:43:19,477 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 12:43:19,477 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 12:43:16" (1/4) ... [2022-01-10 12:43:19,477 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e74ac05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:43:19, skipping insertion in model container [2022-01-10 12:43:19,477 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:43:17" (2/4) ... [2022-01-10 12:43:19,478 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e74ac05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:43:19, skipping insertion in model container [2022-01-10 12:43:19,478 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:43:18" (3/4) ... [2022-01-10 12:43:19,478 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e74ac05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 12:43:19, skipping insertion in model container [2022-01-10 12:43:19,478 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 12:43:19" (4/4) ... [2022-01-10 12:43:19,480 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.5.1.ufo.BOUNDED-10.pals.cTransformedIcfg [2022-01-10 12:43:19,484 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 12:43:19,484 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 12:43:19,527 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 12:43:19,531 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 12:43:19,532 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 12:43:19,560 INFO L276 IsEmpty]: Start isEmpty. Operand has 686 states, 684 states have (on average 1.8464912280701755) internal successors, (1263), 685 states have internal predecessors, (1263), 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 12:43:19,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2022-01-10 12:43:19,614 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:43:19,615 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:43:19,615 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:43:19,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:43:19,619 INFO L85 PathProgramCache]: Analyzing trace with hash -184020242, now seen corresponding path program 1 times [2022-01-10 12:43:19,625 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:43:19,626 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675119798] [2022-01-10 12:43:19,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:43:19,626 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:43:19,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:43:19,985 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 12:43:19,985 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:43:19,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675119798] [2022-01-10 12:43:19,986 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675119798] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:43:19,986 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:43:19,986 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 12:43:19,987 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620568806] [2022-01-10 12:43:19,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:43:19,990 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 12:43:19,990 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:43:20,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 12:43:20,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 12:43:20,011 INFO L87 Difference]: Start difference. First operand has 686 states, 684 states have (on average 1.8464912280701755) internal successors, (1263), 685 states have internal predecessors, (1263), 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 2 states, 2 states have (on average 76.5) internal successors, (153), 2 states have internal predecessors, (153), 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 12:43:20,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:43:20,071 INFO L93 Difference]: Finished difference Result 847 states and 1540 transitions. [2022-01-10 12:43:20,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 12:43:20,073 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 76.5) internal successors, (153), 2 states have internal predecessors, (153), 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 153 [2022-01-10 12:43:20,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:43:20,090 INFO L225 Difference]: With dead ends: 847 [2022-01-10 12:43:20,091 INFO L226 Difference]: Without dead ends: 682 [2022-01-10 12:43:20,098 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 12:43:20,102 INFO L933 BasicCegarLoop]: 1260 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1260 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:43:20,103 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1260 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:43:20,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 682 states. [2022-01-10 12:43:20,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 682 to 682. [2022-01-10 12:43:20,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 682 states, 681 states have (on average 1.844346549192364) internal successors, (1256), 681 states have internal predecessors, (1256), 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 12:43:20,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 682 states to 682 states and 1256 transitions. [2022-01-10 12:43:20,179 INFO L78 Accepts]: Start accepts. Automaton has 682 states and 1256 transitions. Word has length 153 [2022-01-10 12:43:20,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:43:20,182 INFO L470 AbstractCegarLoop]: Abstraction has 682 states and 1256 transitions. [2022-01-10 12:43:20,182 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 76.5) internal successors, (153), 2 states have internal predecessors, (153), 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 12:43:20,183 INFO L276 IsEmpty]: Start isEmpty. Operand 682 states and 1256 transitions. [2022-01-10 12:43:20,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2022-01-10 12:43:20,193 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:43:20,193 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:43:20,193 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 12:43:20,193 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:43:20,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:43:20,194 INFO L85 PathProgramCache]: Analyzing trace with hash -438756787, now seen corresponding path program 1 times [2022-01-10 12:43:20,194 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:43:20,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029218008] [2022-01-10 12:43:20,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:43:20,195 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:43:20,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:43:20,514 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 12:43:20,515 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:43:20,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029218008] [2022-01-10 12:43:20,515 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2029218008] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:43:20,515 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:43:20,516 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 12:43:20,516 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86293621] [2022-01-10 12:43:20,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:43:20,518 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:43:20,518 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:43:20,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:43:20,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:43:20,519 INFO L87 Difference]: Start difference. First operand 682 states and 1256 transitions. Second operand has 5 states, 5 states have (on average 30.6) internal successors, (153), 5 states have internal predecessors, (153), 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 12:43:20,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:43:20,622 INFO L93 Difference]: Finished difference Result 842 states and 1530 transitions. [2022-01-10 12:43:20,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 12:43:20,623 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.6) internal successors, (153), 5 states have internal predecessors, (153), 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 153 [2022-01-10 12:43:20,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:43:20,647 INFO L225 Difference]: With dead ends: 842 [2022-01-10 12:43:20,647 INFO L226 Difference]: Without dead ends: 682 [2022-01-10 12:43:20,648 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 12:43:20,649 INFO L933 BasicCegarLoop]: 1254 mSDtfsCounter, 3 mSDsluCounter, 3719 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 4973 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:43:20,650 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 4973 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:43:20,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 682 states. [2022-01-10 12:43:20,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 682 to 682. [2022-01-10 12:43:20,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 682 states, 681 states have (on average 1.7856093979441998) internal successors, (1216), 681 states have internal predecessors, (1216), 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 12:43:20,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 682 states to 682 states and 1216 transitions. [2022-01-10 12:43:20,660 INFO L78 Accepts]: Start accepts. Automaton has 682 states and 1216 transitions. Word has length 153 [2022-01-10 12:43:20,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:43:20,661 INFO L470 AbstractCegarLoop]: Abstraction has 682 states and 1216 transitions. [2022-01-10 12:43:20,661 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.6) internal successors, (153), 5 states have internal predecessors, (153), 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 12:43:20,661 INFO L276 IsEmpty]: Start isEmpty. Operand 682 states and 1216 transitions. [2022-01-10 12:43:20,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2022-01-10 12:43:20,663 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:43:20,663 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:43:20,663 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 12:43:20,664 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:43:20,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:43:20,664 INFO L85 PathProgramCache]: Analyzing trace with hash 609206975, now seen corresponding path program 1 times [2022-01-10 12:43:20,664 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:43:20,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338751060] [2022-01-10 12:43:20,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:43:20,665 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:43:20,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:43:21,043 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 12:43:21,043 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:43:21,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338751060] [2022-01-10 12:43:21,045 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338751060] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:43:21,045 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:43:21,045 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:43:21,045 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553314780] [2022-01-10 12:43:21,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:43:21,046 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:43:21,046 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:43:21,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:43:21,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:43:21,047 INFO L87 Difference]: Start difference. First operand 682 states and 1216 transitions. Second operand has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 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 12:43:23,076 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 12:43:23,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:43:23,239 INFO L93 Difference]: Finished difference Result 981 states and 1731 transitions. [2022-01-10 12:43:23,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:43:23,240 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 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 192 [2022-01-10 12:43:23,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:43:23,243 INFO L225 Difference]: With dead ends: 981 [2022-01-10 12:43:23,243 INFO L226 Difference]: Without dead ends: 825 [2022-01-10 12:43:23,244 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 12:43:23,244 INFO L933 BasicCegarLoop]: 1425 mSDtfsCounter, 237 mSDsluCounter, 1172 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 2597 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-01-10 12:43:23,245 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [237 Valid, 2597 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 19 Invalid, 1 Unknown, 0 Unchecked, 2.2s Time] [2022-01-10 12:43:23,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 825 states. [2022-01-10 12:43:23,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 825 to 823. [2022-01-10 12:43:23,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 823 states, 822 states have (on average 1.77007299270073) internal successors, (1455), 822 states have internal predecessors, (1455), 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 12:43:23,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 823 states to 823 states and 1455 transitions. [2022-01-10 12:43:23,265 INFO L78 Accepts]: Start accepts. Automaton has 823 states and 1455 transitions. Word has length 192 [2022-01-10 12:43:23,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:43:23,266 INFO L470 AbstractCegarLoop]: Abstraction has 823 states and 1455 transitions. [2022-01-10 12:43:23,267 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 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 12:43:23,267 INFO L276 IsEmpty]: Start isEmpty. Operand 823 states and 1455 transitions. [2022-01-10 12:43:23,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2022-01-10 12:43:23,269 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:43:23,269 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:43:23,269 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 12:43:23,269 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:43:23,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:43:23,270 INFO L85 PathProgramCache]: Analyzing trace with hash -672702762, now seen corresponding path program 1 times [2022-01-10 12:43:23,270 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:43:23,270 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346588643] [2022-01-10 12:43:23,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:43:23,270 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:43:23,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:43:23,437 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 12:43:23,437 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:43:23,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346588643] [2022-01-10 12:43:23,437 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1346588643] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:43:23,437 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:43:23,437 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:43:23,438 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596681328] [2022-01-10 12:43:23,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:43:23,438 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:43:23,439 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:43:23,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:43:23,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:43:23,440 INFO L87 Difference]: Start difference. First operand 823 states and 1455 transitions. Second operand has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 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 12:43:23,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:43:23,468 INFO L93 Difference]: Finished difference Result 1112 states and 1954 transitions. [2022-01-10 12:43:23,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:43:23,468 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 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 196 [2022-01-10 12:43:23,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:43:23,472 INFO L225 Difference]: With dead ends: 1112 [2022-01-10 12:43:23,472 INFO L226 Difference]: Without dead ends: 956 [2022-01-10 12:43:23,475 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 12:43:23,479 INFO L933 BasicCegarLoop]: 1430 mSDtfsCounter, 246 mSDsluCounter, 1179 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 2609 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 12:43:23,480 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [246 Valid, 2609 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:43:23,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 956 states. [2022-01-10 12:43:23,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 956 to 954. [2022-01-10 12:43:23,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 954 states, 953 states have (on average 1.763903462749213) internal successors, (1681), 953 states have internal predecessors, (1681), 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 12:43:23,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 954 states to 954 states and 1681 transitions. [2022-01-10 12:43:23,497 INFO L78 Accepts]: Start accepts. Automaton has 954 states and 1681 transitions. Word has length 196 [2022-01-10 12:43:23,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:43:23,497 INFO L470 AbstractCegarLoop]: Abstraction has 954 states and 1681 transitions. [2022-01-10 12:43:23,497 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 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 12:43:23,498 INFO L276 IsEmpty]: Start isEmpty. Operand 954 states and 1681 transitions. [2022-01-10 12:43:23,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2022-01-10 12:43:23,499 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:43:23,499 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:43:23,499 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 12:43:23,499 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:43:23,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:43:23,500 INFO L85 PathProgramCache]: Analyzing trace with hash 746761448, now seen corresponding path program 1 times [2022-01-10 12:43:23,501 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:43:23,501 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366179673] [2022-01-10 12:43:23,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:43:23,501 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:43:23,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:43:23,694 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 12:43:23,694 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:43:23,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366179673] [2022-01-10 12:43:23,694 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366179673] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:43:23,694 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:43:23,695 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 12:43:23,695 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077946245] [2022-01-10 12:43:23,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:43:23,695 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 12:43:23,695 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:43:23,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 12:43:23,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 12:43:23,696 INFO L87 Difference]: Start difference. First operand 954 states and 1681 transitions. Second operand has 4 states, 4 states have (on average 49.0) internal successors, (196), 4 states have internal predecessors, (196), 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 12:43:23,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:43:23,833 INFO L93 Difference]: Finished difference Result 2766 states and 4866 transitions. [2022-01-10 12:43:23,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 12:43:23,833 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 49.0) internal successors, (196), 4 states have internal predecessors, (196), 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 196 [2022-01-10 12:43:23,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:43:23,839 INFO L225 Difference]: With dead ends: 2766 [2022-01-10 12:43:23,840 INFO L226 Difference]: Without dead ends: 1889 [2022-01-10 12:43:23,843 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:43:23,843 INFO L933 BasicCegarLoop]: 1203 mSDtfsCounter, 3398 mSDsluCounter, 1173 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3398 SdHoareTripleChecker+Valid, 2376 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:43:23,843 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3398 Valid, 2376 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:43:23,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1889 states. [2022-01-10 12:43:23,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1889 to 1887. [2022-01-10 12:43:23,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1887 states, 1886 states have (on average 1.756627783669141) internal successors, (3313), 1886 states have internal predecessors, (3313), 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 12:43:23,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1887 states to 1887 states and 3313 transitions. [2022-01-10 12:43:23,893 INFO L78 Accepts]: Start accepts. Automaton has 1887 states and 3313 transitions. Word has length 196 [2022-01-10 12:43:23,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:43:23,893 INFO L470 AbstractCegarLoop]: Abstraction has 1887 states and 3313 transitions. [2022-01-10 12:43:23,895 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 49.0) internal successors, (196), 4 states have internal predecessors, (196), 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 12:43:23,895 INFO L276 IsEmpty]: Start isEmpty. Operand 1887 states and 3313 transitions. [2022-01-10 12:43:23,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2022-01-10 12:43:23,901 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:43:23,901 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:43:23,902 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 12:43:23,902 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:43:23,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:43:23,902 INFO L85 PathProgramCache]: Analyzing trace with hash 1838229458, now seen corresponding path program 1 times [2022-01-10 12:43:23,902 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:43:23,902 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390961698] [2022-01-10 12:43:23,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:43:23,902 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:43:24,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:43:24,116 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 12:43:24,116 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:43:24,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390961698] [2022-01-10 12:43:24,116 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390961698] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:43:24,116 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:43:24,116 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 12:43:24,116 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078285557] [2022-01-10 12:43:24,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:43:24,117 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 12:43:24,117 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:43:24,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 12:43:24,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 12:43:24,118 INFO L87 Difference]: Start difference. First operand 1887 states and 3313 transitions. Second operand has 4 states, 4 states have (on average 49.5) internal successors, (198), 4 states have internal predecessors, (198), 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 12:43:24,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:43:24,284 INFO L93 Difference]: Finished difference Result 5611 states and 9850 transitions. [2022-01-10 12:43:24,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 12:43:24,285 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 49.5) internal successors, (198), 4 states have internal predecessors, (198), 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 198 [2022-01-10 12:43:24,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:43:24,296 INFO L225 Difference]: With dead ends: 5611 [2022-01-10 12:43:24,296 INFO L226 Difference]: Without dead ends: 3738 [2022-01-10 12:43:24,299 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:43:24,300 INFO L933 BasicCegarLoop]: 1212 mSDtfsCounter, 3374 mSDsluCounter, 1173 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3374 SdHoareTripleChecker+Valid, 2385 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:43:24,300 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3374 Valid, 2385 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:43:24,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3738 states. [2022-01-10 12:43:24,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3738 to 3736. [2022-01-10 12:43:24,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3736 states, 3735 states have (on average 1.7475234270414994) internal successors, (6527), 3735 states have internal predecessors, (6527), 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 12:43:24,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3736 states to 3736 states and 6527 transitions. [2022-01-10 12:43:24,396 INFO L78 Accepts]: Start accepts. Automaton has 3736 states and 6527 transitions. Word has length 198 [2022-01-10 12:43:24,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:43:24,396 INFO L470 AbstractCegarLoop]: Abstraction has 3736 states and 6527 transitions. [2022-01-10 12:43:24,396 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 49.5) internal successors, (198), 4 states have internal predecessors, (198), 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 12:43:24,396 INFO L276 IsEmpty]: Start isEmpty. Operand 3736 states and 6527 transitions. [2022-01-10 12:43:24,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2022-01-10 12:43:24,400 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:43:24,400 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:43:24,400 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 12:43:24,401 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:43:24,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:43:24,401 INFO L85 PathProgramCache]: Analyzing trace with hash 268658119, now seen corresponding path program 1 times [2022-01-10 12:43:24,401 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:43:24,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701039806] [2022-01-10 12:43:24,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:43:24,401 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:43:24,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:43:24,575 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 12:43:24,575 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:43:24,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701039806] [2022-01-10 12:43:24,575 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701039806] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:43:24,575 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:43:24,575 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 12:43:24,575 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036516188] [2022-01-10 12:43:24,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:43:24,576 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 12:43:24,576 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:43:24,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 12:43:24,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 12:43:24,576 INFO L87 Difference]: Start difference. First operand 3736 states and 6527 transitions. Second operand has 4 states, 4 states have (on average 50.0) internal successors, (200), 4 states have internal predecessors, (200), 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 12:43:24,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:43:24,857 INFO L93 Difference]: Finished difference Result 10993 states and 19195 transitions. [2022-01-10 12:43:24,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 12:43:24,858 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 50.0) internal successors, (200), 4 states have internal predecessors, (200), 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 200 [2022-01-10 12:43:24,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:43:24,882 INFO L225 Difference]: With dead ends: 10993 [2022-01-10 12:43:24,883 INFO L226 Difference]: Without dead ends: 7423 [2022-01-10 12:43:24,923 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:43:24,923 INFO L933 BasicCegarLoop]: 1231 mSDtfsCounter, 3370 mSDsluCounter, 1173 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3370 SdHoareTripleChecker+Valid, 2404 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:43:24,923 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3370 Valid, 2404 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:43:24,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7423 states. [2022-01-10 12:43:25,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7423 to 7421. [2022-01-10 12:43:25,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7421 states, 7420 states have (on average 1.7400269541778977) internal successors, (12911), 7420 states have internal predecessors, (12911), 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 12:43:25,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7421 states to 7421 states and 12911 transitions. [2022-01-10 12:43:25,217 INFO L78 Accepts]: Start accepts. Automaton has 7421 states and 12911 transitions. Word has length 200 [2022-01-10 12:43:25,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:43:25,217 INFO L470 AbstractCegarLoop]: Abstraction has 7421 states and 12911 transitions. [2022-01-10 12:43:25,218 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 50.0) internal successors, (200), 4 states have internal predecessors, (200), 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 12:43:25,218 INFO L276 IsEmpty]: Start isEmpty. Operand 7421 states and 12911 transitions. [2022-01-10 12:43:25,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2022-01-10 12:43:25,229 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:43:25,229 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:43:25,229 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 12:43:25,229 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:43:25,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:43:25,230 INFO L85 PathProgramCache]: Analyzing trace with hash 612458899, now seen corresponding path program 1 times [2022-01-10 12:43:25,230 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:43:25,230 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024615773] [2022-01-10 12:43:25,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:43:25,230 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:43:25,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:43:25,466 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 12:43:25,466 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:43:25,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024615773] [2022-01-10 12:43:25,466 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024615773] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:43:25,466 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:43:25,466 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 12:43:25,466 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459320026] [2022-01-10 12:43:25,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:43:25,467 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 12:43:25,467 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:43:25,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 12:43:25,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 12:43:25,468 INFO L87 Difference]: Start difference. First operand 7421 states and 12911 transitions. Second operand has 4 states, 4 states have (on average 50.5) internal successors, (202), 4 states have internal predecessors, (202), 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 12:43:25,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:43:25,984 INFO L93 Difference]: Finished difference Result 22075 states and 38397 transitions. [2022-01-10 12:43:25,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 12:43:25,984 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 50.5) internal successors, (202), 4 states have internal predecessors, (202), 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 202 [2022-01-10 12:43:25,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:43:26,024 INFO L225 Difference]: With dead ends: 22075 [2022-01-10 12:43:26,024 INFO L226 Difference]: Without dead ends: 14715 [2022-01-10 12:43:26,035 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:43:26,036 INFO L933 BasicCegarLoop]: 1226 mSDtfsCounter, 3334 mSDsluCounter, 1173 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3334 SdHoareTripleChecker+Valid, 2399 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:43:26,036 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3334 Valid, 2399 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:43:26,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14715 states. [2022-01-10 12:43:26,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14715 to 14713. [2022-01-10 12:43:26,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14713 states, 14712 states have (on average 1.7304921152800434) internal successors, (25459), 14712 states have internal predecessors, (25459), 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 12:43:26,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14713 states to 14713 states and 25459 transitions. [2022-01-10 12:43:26,593 INFO L78 Accepts]: Start accepts. Automaton has 14713 states and 25459 transitions. Word has length 202 [2022-01-10 12:43:26,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:43:26,594 INFO L470 AbstractCegarLoop]: Abstraction has 14713 states and 25459 transitions. [2022-01-10 12:43:26,594 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 50.5) internal successors, (202), 4 states have internal predecessors, (202), 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 12:43:26,594 INFO L276 IsEmpty]: Start isEmpty. Operand 14713 states and 25459 transitions. [2022-01-10 12:43:26,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2022-01-10 12:43:26,612 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:43:26,612 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:43:26,612 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 12:43:26,612 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:43:26,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:43:26,613 INFO L85 PathProgramCache]: Analyzing trace with hash 2059789705, now seen corresponding path program 1 times [2022-01-10 12:43:26,613 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:43:26,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132760334] [2022-01-10 12:43:26,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:43:26,613 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:43:26,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:43:26,932 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 12:43:26,932 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:43:26,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132760334] [2022-01-10 12:43:26,932 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132760334] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:43:26,932 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:43:26,933 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:43:26,933 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865780742] [2022-01-10 12:43:26,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:43:26,933 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:43:26,933 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:43:26,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:43:26,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:43:26,934 INFO L87 Difference]: Start difference. First operand 14713 states and 25459 transitions. Second operand has 3 states, 3 states have (on average 68.0) internal successors, (204), 3 states have internal predecessors, (204), 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 12:43:29,240 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 12:43:29,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:43:29,727 INFO L93 Difference]: Finished difference Result 27333 states and 46861 transitions. [2022-01-10 12:43:29,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:43:29,728 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.0) internal successors, (204), 3 states have internal predecessors, (204), 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 204 [2022-01-10 12:43:29,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:43:29,766 INFO L225 Difference]: With dead ends: 27333 [2022-01-10 12:43:29,766 INFO L226 Difference]: Without dead ends: 20771 [2022-01-10 12:43:29,777 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 12:43:29,778 INFO L933 BasicCegarLoop]: 1223 mSDtfsCounter, 229 mSDsluCounter, 1181 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 2404 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-01-10 12:43:29,779 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [229 Valid, 2404 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 1 Unknown, 0 Unchecked, 2.2s Time] [2022-01-10 12:43:29,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20771 states. [2022-01-10 12:43:30,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20771 to 20769. [2022-01-10 12:43:30,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20769 states, 20768 states have (on average 1.7162461479198767) internal successors, (35643), 20768 states have internal predecessors, (35643), 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 12:43:30,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20769 states to 20769 states and 35643 transitions. [2022-01-10 12:43:30,480 INFO L78 Accepts]: Start accepts. Automaton has 20769 states and 35643 transitions. Word has length 204 [2022-01-10 12:43:30,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:43:30,480 INFO L470 AbstractCegarLoop]: Abstraction has 20769 states and 35643 transitions. [2022-01-10 12:43:30,480 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.0) internal successors, (204), 3 states have internal predecessors, (204), 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 12:43:30,480 INFO L276 IsEmpty]: Start isEmpty. Operand 20769 states and 35643 transitions. [2022-01-10 12:43:30,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2022-01-10 12:43:30,498 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:43:30,499 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:43:30,499 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 12:43:30,499 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:43:30,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:43:30,501 INFO L85 PathProgramCache]: Analyzing trace with hash -403067599, now seen corresponding path program 1 times [2022-01-10 12:43:30,501 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:43:30,501 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079075735] [2022-01-10 12:43:30,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:43:30,501 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:43:30,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:43:30,673 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 12:43:30,673 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:43:30,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079075735] [2022-01-10 12:43:30,673 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079075735] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:43:30,673 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:43:30,673 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 12:43:30,673 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682145420] [2022-01-10 12:43:30,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:43:30,674 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 12:43:30,674 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:43:30,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 12:43:30,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 12:43:30,674 INFO L87 Difference]: Start difference. First operand 20769 states and 35643 transitions. Second operand has 4 states, 4 states have (on average 52.0) internal successors, (208), 4 states have internal predecessors, (208), 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 12:43:32,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:43:32,110 INFO L93 Difference]: Finished difference Result 60869 states and 104445 transitions. [2022-01-10 12:43:32,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 12:43:32,111 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 52.0) internal successors, (208), 4 states have internal predecessors, (208), 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 208 [2022-01-10 12:43:32,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:43:32,196 INFO L225 Difference]: With dead ends: 60869 [2022-01-10 12:43:32,196 INFO L226 Difference]: Without dead ends: 40907 [2022-01-10 12:43:32,226 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:43:32,227 INFO L933 BasicCegarLoop]: 1186 mSDtfsCounter, 3279 mSDsluCounter, 1173 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3279 SdHoareTripleChecker+Valid, 2359 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:43:32,227 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3279 Valid, 2359 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:43:32,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40907 states. [2022-01-10 12:43:33,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40907 to 40905. [2022-01-10 12:43:33,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40905 states, 40904 states have (on average 1.7104195188734599) internal successors, (69963), 40904 states have internal predecessors, (69963), 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 12:43:33,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40905 states to 40905 states and 69963 transitions. [2022-01-10 12:43:33,594 INFO L78 Accepts]: Start accepts. Automaton has 40905 states and 69963 transitions. Word has length 208 [2022-01-10 12:43:33,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:43:33,595 INFO L470 AbstractCegarLoop]: Abstraction has 40905 states and 69963 transitions. [2022-01-10 12:43:33,595 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 52.0) internal successors, (208), 4 states have internal predecessors, (208), 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 12:43:33,595 INFO L276 IsEmpty]: Start isEmpty. Operand 40905 states and 69963 transitions. [2022-01-10 12:43:33,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2022-01-10 12:43:33,636 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:43:33,636 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:43:33,637 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 12:43:33,637 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:43:33,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:43:33,637 INFO L85 PathProgramCache]: Analyzing trace with hash 822836369, now seen corresponding path program 1 times [2022-01-10 12:43:33,638 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:43:33,638 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691743439] [2022-01-10 12:43:33,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:43:33,638 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:43:33,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:43:33,897 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 12:43:33,898 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:43:33,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691743439] [2022-01-10 12:43:33,898 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691743439] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:43:33,898 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:43:33,898 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:43:33,898 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777784392] [2022-01-10 12:43:33,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:43:33,899 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:43:33,899 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:43:33,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:43:33,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:43:33,900 INFO L87 Difference]: Start difference. First operand 40905 states and 69963 transitions. Second operand has 3 states, 3 states have (on average 69.33333333333333) internal successors, (208), 3 states have internal predecessors, (208), 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 12:43:35,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:43:35,179 INFO L93 Difference]: Finished difference Result 65053 states and 110813 transitions. [2022-01-10 12:43:35,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:43:35,180 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 69.33333333333333) internal successors, (208), 3 states have internal predecessors, (208), 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 208 [2022-01-10 12:43:35,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:43:35,295 INFO L225 Difference]: With dead ends: 65053 [2022-01-10 12:43:35,295 INFO L226 Difference]: Without dead ends: 52043 [2022-01-10 12:43:35,327 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 12:43:35,328 INFO L933 BasicCegarLoop]: 1414 mSDtfsCounter, 232 mSDsluCounter, 1180 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 232 SdHoareTripleChecker+Valid, 2594 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 12:43:35,328 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [232 Valid, 2594 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:43:35,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52043 states. [2022-01-10 12:43:36,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52043 to 52041. [2022-01-10 12:43:36,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52041 states, 52040 states have (on average 1.7022867025365105) internal successors, (88587), 52040 states have internal predecessors, (88587), 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 12:43:37,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52041 states to 52041 states and 88587 transitions. [2022-01-10 12:43:37,018 INFO L78 Accepts]: Start accepts. Automaton has 52041 states and 88587 transitions. Word has length 208 [2022-01-10 12:43:37,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:43:37,018 INFO L470 AbstractCegarLoop]: Abstraction has 52041 states and 88587 transitions. [2022-01-10 12:43:37,018 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.33333333333333) internal successors, (208), 3 states have internal predecessors, (208), 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 12:43:37,018 INFO L276 IsEmpty]: Start isEmpty. Operand 52041 states and 88587 transitions. [2022-01-10 12:43:37,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2022-01-10 12:43:37,059 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:43:37,060 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:43:37,060 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 12:43:37,060 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:43:37,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:43:37,060 INFO L85 PathProgramCache]: Analyzing trace with hash -496874885, now seen corresponding path program 1 times [2022-01-10 12:43:37,060 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:43:37,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064022169] [2022-01-10 12:43:37,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:43:37,061 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:43:37,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:43:37,236 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 12:43:37,236 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:43:37,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064022169] [2022-01-10 12:43:37,237 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064022169] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:43:37,237 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:43:37,237 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 12:43:37,237 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249221193] [2022-01-10 12:43:37,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:43:37,237 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 12:43:37,237 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:43:37,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 12:43:37,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 12:43:37,238 INFO L87 Difference]: Start difference. First operand 52041 states and 88587 transitions. Second operand has 4 states, 4 states have (on average 52.5) internal successors, (210), 4 states have internal predecessors, (210), 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 12:43:40,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:43:40,255 INFO L93 Difference]: Finished difference Result 152341 states and 259007 transitions. [2022-01-10 12:43:40,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 12:43:40,255 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 52.5) internal successors, (210), 4 states have internal predecessors, (210), 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 210 [2022-01-10 12:43:40,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:43:40,458 INFO L225 Difference]: With dead ends: 152341 [2022-01-10 12:43:40,458 INFO L226 Difference]: Without dead ends: 103107 [2022-01-10 12:43:40,501 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:43:40,501 INFO L933 BasicCegarLoop]: 1250 mSDtfsCounter, 3298 mSDsluCounter, 1173 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3298 SdHoareTripleChecker+Valid, 2423 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:43:40,502 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3298 Valid, 2423 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:43:40,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103107 states. [2022-01-10 12:43:43,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103107 to 103105. [2022-01-10 12:43:43,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103105 states, 103104 states have (on average 1.6948808969584108) internal successors, (174749), 103104 states have internal predecessors, (174749), 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 12:43:43,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103105 states to 103105 states and 174749 transitions. [2022-01-10 12:43:43,931 INFO L78 Accepts]: Start accepts. Automaton has 103105 states and 174749 transitions. Word has length 210 [2022-01-10 12:43:43,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:43:43,932 INFO L470 AbstractCegarLoop]: Abstraction has 103105 states and 174749 transitions. [2022-01-10 12:43:43,932 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 52.5) internal successors, (210), 4 states have internal predecessors, (210), 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 12:43:43,932 INFO L276 IsEmpty]: Start isEmpty. Operand 103105 states and 174749 transitions. [2022-01-10 12:43:43,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2022-01-10 12:43:43,984 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:43:43,985 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:43:43,985 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 12:43:43,985 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:43:43,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:43:43,985 INFO L85 PathProgramCache]: Analyzing trace with hash -1267330992, now seen corresponding path program 1 times [2022-01-10 12:43:43,986 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:43:43,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135795365] [2022-01-10 12:43:43,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:43:43,986 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:43:44,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:43:44,377 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 12:43:44,377 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:43:44,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135795365] [2022-01-10 12:43:44,377 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135795365] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:43:44,377 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:43:44,377 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 12:43:44,377 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723577894] [2022-01-10 12:43:44,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:43:44,378 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 12:43:44,378 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:43:44,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 12:43:44,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 12:43:44,378 INFO L87 Difference]: Start difference. First operand 103105 states and 174749 transitions. Second operand has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 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 12:43:50,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:43:50,216 INFO L93 Difference]: Finished difference Result 304217 states and 515175 transitions. [2022-01-10 12:43:50,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 12:43:50,217 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 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 212 [2022-01-10 12:43:50,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:43:50,767 INFO L225 Difference]: With dead ends: 304217 [2022-01-10 12:43:50,767 INFO L226 Difference]: Without dead ends: 204375 [2022-01-10 12:43:50,850 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:43:50,851 INFO L933 BasicCegarLoop]: 1248 mSDtfsCounter, 3264 mSDsluCounter, 1173 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3264 SdHoareTripleChecker+Valid, 2421 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:43:50,851 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3264 Valid, 2421 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:43:50,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204375 states. [2022-01-10 12:43:57,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204375 to 204373. [2022-01-10 12:43:57,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204373 states, 204372 states have (on average 1.6873006086939502) internal successors, (344837), 204372 states have internal predecessors, (344837), 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 12:43:58,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204373 states to 204373 states and 344837 transitions. [2022-01-10 12:43:58,441 INFO L78 Accepts]: Start accepts. Automaton has 204373 states and 344837 transitions. Word has length 212 [2022-01-10 12:43:58,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:43:58,441 INFO L470 AbstractCegarLoop]: Abstraction has 204373 states and 344837 transitions. [2022-01-10 12:43:58,442 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 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 12:43:58,442 INFO L276 IsEmpty]: Start isEmpty. Operand 204373 states and 344837 transitions. [2022-01-10 12:43:58,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2022-01-10 12:43:58,566 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:43:58,566 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:43:58,566 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 12:43:58,566 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:43:58,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:43:58,567 INFO L85 PathProgramCache]: Analyzing trace with hash -1990705284, now seen corresponding path program 1 times [2022-01-10 12:43:58,567 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:43:58,567 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303004240] [2022-01-10 12:43:58,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:43:58,567 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:43:58,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:43:58,955 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 12:43:58,955 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:43:58,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303004240] [2022-01-10 12:43:58,955 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303004240] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:43:58,955 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:43:58,955 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 12:43:58,956 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826842678] [2022-01-10 12:43:58,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:43:58,956 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 12:43:58,956 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:43:58,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 12:43:58,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 12:43:58,957 INFO L87 Difference]: Start difference. First operand 204373 states and 344837 transitions. Second operand has 4 states, 4 states have (on average 53.5) internal successors, (214), 4 states have internal predecessors, (214), 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 12:44:11,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:44:11,775 INFO L93 Difference]: Finished difference Result 602399 states and 1015447 transitions. [2022-01-10 12:44:11,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 12:44:11,776 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 53.5) internal successors, (214), 4 states have internal predecessors, (214), 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 214 [2022-01-10 12:44:11,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:44:12,800 INFO L225 Difference]: With dead ends: 602399 [2022-01-10 12:44:12,800 INFO L226 Difference]: Without dead ends: 405085 [2022-01-10 12:44:12,972 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:44:12,972 INFO L933 BasicCegarLoop]: 1244 mSDtfsCounter, 3232 mSDsluCounter, 1173 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3232 SdHoareTripleChecker+Valid, 2417 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:44:12,973 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3232 Valid, 2417 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:44:13,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 405085 states.