/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_LAZY.epf -i ../../../trunk/examples/svcomp/psyco/psyco_abp_1-3.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 17:28:42,265 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 17:28:42,267 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 17:28:42,332 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-10 17:28:42,350 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 17:28:42,351 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 17:28:42,352 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 17:28:42,353 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 17:28:42,353 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 17:28:42,354 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 17:28:42,355 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 17:28:42,357 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 17:28:42,358 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 17:28:42,365 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 17:28:42,370 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 17:28:42,371 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 17:28:42,374 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 17:28:42,380 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 17:28:42,381 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 17:28:42,381 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 17:28:42,386 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_LAZY.epf [2022-01-10 17:28:42,421 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 17:28:42,421 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 17:28:42,422 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 17:28:42,422 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 17:28:42,423 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 17:28:42,423 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 17:28:42,423 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 17:28:42,423 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 17:28:42,424 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 17:28:42,424 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 17:28:42,425 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 17:28:42,425 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 17:28:42,425 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 17:28:42,425 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 17:28:42,425 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 17:28:42,425 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 17:28:42,425 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 17:28:42,425 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 17:28:42,426 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 17:28:42,426 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 17:28:42,426 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 17:28:42,427 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 17:28:42,427 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 17:28:42,428 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 17:28:42,428 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 17:28:42,428 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 17:28:42,428 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 17:28:42,428 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 17:28:42,428 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 17:28:42,428 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 17:28:42,428 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 17:28:42,429 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 17:28:42,430 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 17:28:42,430 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_LAZY 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 17:28:42,668 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 17:28:42,686 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 17:28:42,689 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 17:28:42,689 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 17:28:42,695 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 17:28:42,697 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/psyco/psyco_abp_1-3.c [2022-01-10 17:28:42,766 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/836007229/b9e046c54ff14a8e9e231b82a99fcdb8/FLAG2b477a650 [2022-01-10 17:28:43,266 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 17:28:43,266 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/psyco/psyco_abp_1-3.c [2022-01-10 17:28:43,276 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/836007229/b9e046c54ff14a8e9e231b82a99fcdb8/FLAG2b477a650 [2022-01-10 17:28:43,776 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/836007229/b9e046c54ff14a8e9e231b82a99fcdb8 [2022-01-10 17:28:43,778 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 17:28:43,779 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 17:28:43,783 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 17:28:43,784 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 17:28:43,786 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 17:28:43,787 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 05:28:43" (1/1) ... [2022-01-10 17:28:43,788 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2284308d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:28:43, skipping insertion in model container [2022-01-10 17:28:43,788 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 05:28:43" (1/1) ... [2022-01-10 17:28:43,794 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 17:28:43,821 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 17:28:44,056 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/psyco/psyco_abp_1-3.c[24720,24733] [2022-01-10 17:28:44,061 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 17:28:44,075 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 17:28:44,141 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/psyco/psyco_abp_1-3.c[24720,24733] [2022-01-10 17:28:44,143 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 17:28:44,156 INFO L208 MainTranslator]: Completed translation [2022-01-10 17:28:44,156 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:28:44 WrapperNode [2022-01-10 17:28:44,156 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 17:28:44,157 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 17:28:44,157 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 17:28:44,158 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 17:28:44,173 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:28:44" (1/1) ... [2022-01-10 17:28:44,193 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:28:44" (1/1) ... [2022-01-10 17:28:44,245 INFO L137 Inliner]: procedures = 12, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 375 [2022-01-10 17:28:44,245 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 17:28:44,246 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 17:28:44,246 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 17:28:44,246 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 17:28:44,253 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:28:44" (1/1) ... [2022-01-10 17:28:44,254 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:28:44" (1/1) ... [2022-01-10 17:28:44,257 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:28:44" (1/1) ... [2022-01-10 17:28:44,258 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:28:44" (1/1) ... [2022-01-10 17:28:44,267 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:28:44" (1/1) ... [2022-01-10 17:28:44,273 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:28:44" (1/1) ... [2022-01-10 17:28:44,276 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:28:44" (1/1) ... [2022-01-10 17:28:44,281 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 17:28:44,282 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 17:28:44,282 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 17:28:44,282 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 17:28:44,284 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:28:44" (1/1) ... [2022-01-10 17:28:44,290 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 17:28:44,313 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 17:28:44,328 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 17:28:44,343 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 17:28:44,360 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 17:28:44,361 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 17:28:44,361 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 17:28:44,361 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 17:28:44,424 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 17:28:44,425 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 17:28:44,898 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 17:28:44,904 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 17:28:44,905 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-01-10 17:28:44,907 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 05:28:44 BoogieIcfgContainer [2022-01-10 17:28:44,907 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 17:28:44,907 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 17:28:44,908 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 17:28:44,909 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 17:28:44,911 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 05:28:44" (1/1) ... [2022-01-10 17:28:45,097 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 05:28:45 BasicIcfg [2022-01-10 17:28:45,097 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 17:28:45,099 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 17:28:45,099 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 17:28:45,101 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 17:28:45,102 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 05:28:43" (1/4) ... [2022-01-10 17:28:45,102 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42285258 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 05:28:45, skipping insertion in model container [2022-01-10 17:28:45,102 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:28:44" (2/4) ... [2022-01-10 17:28:45,103 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42285258 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 05:28:45, skipping insertion in model container [2022-01-10 17:28:45,103 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 05:28:44" (3/4) ... [2022-01-10 17:28:45,103 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42285258 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 05:28:45, skipping insertion in model container [2022-01-10 17:28:45,103 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 05:28:45" (4/4) ... [2022-01-10 17:28:45,104 INFO L111 eAbstractionObserver]: Analyzing ICFG psyco_abp_1-3.cTransformedIcfg [2022-01-10 17:28:45,111 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 17:28:45,112 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 17:28:45,148 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 17:28:45,153 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 17:28:45,153 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 17:28:45,167 INFO L276 IsEmpty]: Start isEmpty. Operand has 109 states, 107 states have (on average 1.9532710280373833) internal successors, (209), 108 states have internal predecessors, (209), 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 17:28:45,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-01-10 17:28:45,171 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:28:45,172 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 17:28:45,172 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 17:28:45,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:28:45,176 INFO L85 PathProgramCache]: Analyzing trace with hash 1769879515, now seen corresponding path program 1 times [2022-01-10 17:28:45,184 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:28:45,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189494428] [2022-01-10 17:28:45,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:28:45,186 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:28:45,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:28:45,384 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 17:28:45,384 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:28:45,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189494428] [2022-01-10 17:28:45,385 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189494428] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:28:45,386 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:28:45,386 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 17:28:45,387 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615297927] [2022-01-10 17:28:45,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:28:45,393 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 17:28:45,393 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:28:45,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 17:28:45,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 17:28:45,426 INFO L87 Difference]: Start difference. First operand has 109 states, 107 states have (on average 1.9532710280373833) internal successors, (209), 108 states have internal predecessors, (209), 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 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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 17:28:45,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:28:45,458 INFO L93 Difference]: Finished difference Result 216 states and 416 transitions. [2022-01-10 17:28:45,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 17:28:45,460 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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 9 [2022-01-10 17:28:45,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:28:45,468 INFO L225 Difference]: With dead ends: 216 [2022-01-10 17:28:45,469 INFO L226 Difference]: Without dead ends: 95 [2022-01-10 17:28:45,472 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 17:28:45,475 INFO L933 BasicCegarLoop]: 194 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, 194 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 17:28:45,476 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 17:28:45,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2022-01-10 17:28:45,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2022-01-10 17:28:45,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 94 states have (on average 1.648936170212766) internal successors, (155), 94 states have internal predecessors, (155), 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 17:28:45,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 155 transitions. [2022-01-10 17:28:45,516 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 155 transitions. Word has length 9 [2022-01-10 17:28:45,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:28:45,516 INFO L470 AbstractCegarLoop]: Abstraction has 95 states and 155 transitions. [2022-01-10 17:28:45,516 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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 17:28:45,516 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 155 transitions. [2022-01-10 17:28:45,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-01-10 17:28:45,518 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:28:45,519 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 17:28:45,520 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 17:28:45,520 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 17:28:45,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:28:45,523 INFO L85 PathProgramCache]: Analyzing trace with hash -937771571, now seen corresponding path program 1 times [2022-01-10 17:28:45,524 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:28:45,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333283642] [2022-01-10 17:28:45,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:28:45,524 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:28:45,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:28:45,594 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 17:28:45,595 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:28:45,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333283642] [2022-01-10 17:28:45,595 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333283642] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:28:45,595 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:28:45,596 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 17:28:45,596 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570934034] [2022-01-10 17:28:45,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:28:45,597 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 17:28:45,597 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:28:45,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 17:28:45,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 17:28:45,598 INFO L87 Difference]: Start difference. First operand 95 states and 155 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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 17:28:45,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:28:45,657 INFO L93 Difference]: Finished difference Result 191 states and 312 transitions. [2022-01-10 17:28:45,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 17:28:45,658 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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 10 [2022-01-10 17:28:45,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:28:45,660 INFO L225 Difference]: With dead ends: 191 [2022-01-10 17:28:45,660 INFO L226 Difference]: Without dead ends: 98 [2022-01-10 17:28:45,661 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 17:28:45,662 INFO L933 BasicCegarLoop]: 154 mSDtfsCounter, 4 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 288 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 17:28:45,662 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 288 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 17:28:45,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2022-01-10 17:28:45,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2022-01-10 17:28:45,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 97 states have (on average 1.6288659793814433) internal successors, (158), 97 states have internal predecessors, (158), 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 17:28:45,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 158 transitions. [2022-01-10 17:28:45,678 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 158 transitions. Word has length 10 [2022-01-10 17:28:45,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:28:45,679 INFO L470 AbstractCegarLoop]: Abstraction has 98 states and 158 transitions. [2022-01-10 17:28:45,679 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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 17:28:45,679 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 158 transitions. [2022-01-10 17:28:45,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-01-10 17:28:45,680 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:28:45,680 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 17:28:45,680 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 17:28:45,680 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 17:28:45,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:28:45,681 INFO L85 PathProgramCache]: Analyzing trace with hash 972527464, now seen corresponding path program 1 times [2022-01-10 17:28:45,681 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:28:45,681 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349615396] [2022-01-10 17:28:45,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:28:45,681 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:28:45,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:28:46,127 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 17:28:46,128 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:28:46,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349615396] [2022-01-10 17:28:46,129 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349615396] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:28:46,130 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:28:46,130 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 17:28:46,130 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583344512] [2022-01-10 17:28:46,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:28:46,130 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 17:28:46,131 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:28:46,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 17:28:46,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 17:28:46,131 INFO L87 Difference]: Start difference. First operand 98 states and 158 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 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 17:28:46,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:28:46,431 INFO L93 Difference]: Finished difference Result 197 states and 315 transitions. [2022-01-10 17:28:46,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 17:28:46,431 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 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 15 [2022-01-10 17:28:46,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:28:46,433 INFO L225 Difference]: With dead ends: 197 [2022-01-10 17:28:46,433 INFO L226 Difference]: Without dead ends: 183 [2022-01-10 17:28:46,433 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 17:28:46,435 INFO L933 BasicCegarLoop]: 151 mSDtfsCounter, 123 mSDsluCounter, 213 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 364 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 17:28:46,435 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [123 Valid, 364 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 17:28:46,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2022-01-10 17:28:46,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 167. [2022-01-10 17:28:46,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 166 states have (on average 1.6325301204819278) internal successors, (271), 166 states have internal predecessors, (271), 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 17:28:46,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 271 transitions. [2022-01-10 17:28:46,458 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 271 transitions. Word has length 15 [2022-01-10 17:28:46,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:28:46,458 INFO L470 AbstractCegarLoop]: Abstraction has 167 states and 271 transitions. [2022-01-10 17:28:46,459 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 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 17:28:46,459 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 271 transitions. [2022-01-10 17:28:46,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-01-10 17:28:46,460 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:28:46,460 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 17:28:46,460 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 17:28:46,461 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 17:28:46,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:28:46,462 INFO L85 PathProgramCache]: Analyzing trace with hash 114182670, now seen corresponding path program 1 times [2022-01-10 17:28:46,462 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:28:46,462 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790846136] [2022-01-10 17:28:46,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:28:46,463 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:28:46,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:28:46,523 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 17:28:46,524 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:28:46,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790846136] [2022-01-10 17:28:46,524 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1790846136] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:28:46,524 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:28:46,524 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 17:28:46,524 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2606239] [2022-01-10 17:28:46,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:28:46,525 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 17:28:46,525 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:28:46,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 17:28:46,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 17:28:46,526 INFO L87 Difference]: Start difference. First operand 167 states and 271 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 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 17:28:46,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:28:46,558 INFO L93 Difference]: Finished difference Result 283 states and 457 transitions. [2022-01-10 17:28:46,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 17:28:46,559 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 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 16 [2022-01-10 17:28:46,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:28:46,561 INFO L225 Difference]: With dead ends: 283 [2022-01-10 17:28:46,561 INFO L226 Difference]: Without dead ends: 119 [2022-01-10 17:28:46,565 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 17:28:46,574 INFO L933 BasicCegarLoop]: 154 mSDtfsCounter, 28 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 265 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 17:28:46,574 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 265 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 17:28:46,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2022-01-10 17:28:46,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 117. [2022-01-10 17:28:46,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 116 states have (on average 1.5862068965517242) internal successors, (184), 116 states have internal predecessors, (184), 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 17:28:46,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 184 transitions. [2022-01-10 17:28:46,581 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 184 transitions. Word has length 16 [2022-01-10 17:28:46,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:28:46,582 INFO L470 AbstractCegarLoop]: Abstraction has 117 states and 184 transitions. [2022-01-10 17:28:46,582 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 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 17:28:46,582 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 184 transitions. [2022-01-10 17:28:46,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-10 17:28:46,583 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:28:46,583 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 17:28:46,588 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 17:28:46,589 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 17:28:46,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:28:46,592 INFO L85 PathProgramCache]: Analyzing trace with hash -1636017867, now seen corresponding path program 1 times [2022-01-10 17:28:46,592 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:28:46,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579069062] [2022-01-10 17:28:46,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:28:46,593 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:28:46,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:28:46,671 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-10 17:28:46,672 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:28:46,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579069062] [2022-01-10 17:28:46,672 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579069062] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:28:46,673 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:28:46,673 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 17:28:46,674 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663371665] [2022-01-10 17:28:46,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:28:46,674 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 17:28:46,674 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:28:46,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 17:28:46,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 17:28:46,675 INFO L87 Difference]: Start difference. First operand 117 states and 184 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 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 17:28:46,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:28:46,697 INFO L93 Difference]: Finished difference Result 217 states and 340 transitions. [2022-01-10 17:28:46,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 17:28:46,698 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 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 21 [2022-01-10 17:28:46,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:28:46,699 INFO L225 Difference]: With dead ends: 217 [2022-01-10 17:28:46,699 INFO L226 Difference]: Without dead ends: 103 [2022-01-10 17:28:46,700 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 17:28:46,705 INFO L933 BasicCegarLoop]: 122 mSDtfsCounter, 88 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 17:28:46,705 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [88 Valid, 155 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 17:28:46,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2022-01-10 17:28:46,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 101. [2022-01-10 17:28:46,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 100 states have (on average 1.55) internal successors, (155), 100 states have internal predecessors, (155), 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 17:28:46,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 155 transitions. [2022-01-10 17:28:46,720 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 155 transitions. Word has length 21 [2022-01-10 17:28:46,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:28:46,720 INFO L470 AbstractCegarLoop]: Abstraction has 101 states and 155 transitions. [2022-01-10 17:28:46,720 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 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 17:28:46,721 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 155 transitions. [2022-01-10 17:28:46,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-01-10 17:28:46,721 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:28:46,721 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 17:28:46,721 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 17:28:46,722 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 17:28:46,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:28:46,722 INFO L85 PathProgramCache]: Analyzing trace with hash 724136411, now seen corresponding path program 1 times [2022-01-10 17:28:46,722 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:28:46,722 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002193487] [2022-01-10 17:28:46,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:28:46,723 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:28:46,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:28:46,821 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 17:28:46,822 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:28:46,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002193487] [2022-01-10 17:28:46,822 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002193487] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 17:28:46,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [202013400] [2022-01-10 17:28:46,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:28:46,823 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 17:28:46,823 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 17:28:46,824 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 17:28:46,825 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-10 17:28:46,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:28:46,931 INFO L263 TraceCheckSpWp]: Trace formula consists of 338 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 17:28:46,936 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 17:28:47,182 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 17:28:47,183 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 17:28:47,236 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 17:28:47,236 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [202013400] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 17:28:47,237 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 17:28:47,237 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-01-10 17:28:47,237 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146027011] [2022-01-10 17:28:47,237 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 17:28:47,237 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 17:28:47,238 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:28:47,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 17:28:47,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-01-10 17:28:47,238 INFO L87 Difference]: Start difference. First operand 101 states and 155 transitions. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 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 17:28:47,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:28:47,258 INFO L93 Difference]: Finished difference Result 161 states and 249 transitions. [2022-01-10 17:28:47,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 17:28:47,259 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 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 23 [2022-01-10 17:28:47,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:28:47,260 INFO L225 Difference]: With dead ends: 161 [2022-01-10 17:28:47,260 INFO L226 Difference]: Without dead ends: 158 [2022-01-10 17:28:47,260 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-01-10 17:28:47,261 INFO L933 BasicCegarLoop]: 118 mSDtfsCounter, 106 mSDsluCounter, 324 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 442 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 22 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 17:28:47,262 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [106 Valid, 442 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 6 Invalid, 0 Unknown, 22 Unchecked, 0.0s Time] [2022-01-10 17:28:47,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2022-01-10 17:28:47,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 145. [2022-01-10 17:28:47,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 144 states have (on average 1.6041666666666667) internal successors, (231), 144 states have internal predecessors, (231), 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 17:28:47,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 231 transitions. [2022-01-10 17:28:47,274 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 231 transitions. Word has length 23 [2022-01-10 17:28:47,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:28:47,274 INFO L470 AbstractCegarLoop]: Abstraction has 145 states and 231 transitions. [2022-01-10 17:28:47,274 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 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 17:28:47,274 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 231 transitions. [2022-01-10 17:28:47,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-01-10 17:28:47,278 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:28:47,278 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 17:28:47,308 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-10 17:28:47,504 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-01-10 17:28:47,504 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 17:28:47,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:28:47,505 INFO L85 PathProgramCache]: Analyzing trace with hash 974380071, now seen corresponding path program 1 times [2022-01-10 17:28:47,505 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:28:47,505 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196670311] [2022-01-10 17:28:47,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:28:47,505 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:28:47,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:28:47,709 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 17:28:47,709 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:28:47,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196670311] [2022-01-10 17:28:47,709 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196670311] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 17:28:47,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1329022529] [2022-01-10 17:28:47,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:28:47,710 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 17:28:47,710 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 17:28:47,711 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 17:28:47,712 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process