/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/AutomizerCTransformed.xml -s ../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf -i ../../../trunk/examples/svcomp/reducercommutativity/sum10-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-d966a43 [2022-01-31 08:45:50,291 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-31 08:45:50,293 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-31 08:45:50,369 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-31 08:45:50,370 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-31 08:45:50,371 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-31 08:45:50,372 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-31 08:45:50,374 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-31 08:45:50,376 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-31 08:45:50,380 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-31 08:45:50,381 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-31 08:45:50,381 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-31 08:45:50,382 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-31 08:45:50,383 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-31 08:45:50,383 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-31 08:45:50,386 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-31 08:45:50,386 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-31 08:45:50,387 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-31 08:45:50,390 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-31 08:45:50,396 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-31 08:45:50,397 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-31 08:45:50,398 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-31 08:45:50,399 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-31 08:45:50,400 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-31 08:45:50,408 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-31 08:45:50,411 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-31 08:45:50,412 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-31 08:45:50,413 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-31 08:45:50,414 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-31 08:45:50,415 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-31 08:45:50,416 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-31 08:45:50,416 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-31 08:45:50,416 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-31 08:45:50,416 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-31 08:45:50,417 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-31 08:45:50,418 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-31 08:45:50,419 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2022-01-31 08:45:50,432 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-31 08:45:50,433 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-31 08:45:50,434 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-31 08:45:50,434 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-31 08:45:50,435 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-31 08:45:50,435 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-31 08:45:50,435 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-31 08:45:50,435 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-31 08:45:50,435 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-31 08:45:50,435 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-31 08:45:50,436 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-31 08:45:50,436 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-31 08:45:50,436 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-31 08:45:50,436 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-31 08:45:50,436 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-31 08:45:50,437 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-31 08:45:50,437 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-31 08:45:50,437 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-31 08:45:50,437 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 08:45:50,437 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-31 08:45:50,437 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-31 08:45:50,439 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-31 08:45:50,439 INFO L138 SettingsManager]: * TransformationType=LOOP_ACCELERATION_JORDAN 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-31 08:45:50,689 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-31 08:45:50,722 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-31 08:45:50,724 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-31 08:45:50,725 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-31 08:45:50,727 INFO L275 PluginConnector]: CDTParser initialized [2022-01-31 08:45:50,728 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/reducercommutativity/sum10-1.i [2022-01-31 08:45:50,796 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bd18efedd/c04ff10f75854d1b85090c690dde8694/FLAG30870366a [2022-01-31 08:45:51,189 INFO L306 CDTParser]: Found 1 translation units. [2022-01-31 08:45:51,190 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/reducercommutativity/sum10-1.i [2022-01-31 08:45:51,200 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bd18efedd/c04ff10f75854d1b85090c690dde8694/FLAG30870366a [2022-01-31 08:45:51,597 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bd18efedd/c04ff10f75854d1b85090c690dde8694 [2022-01-31 08:45:51,599 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-31 08:45:51,601 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-31 08:45:51,604 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-31 08:45:51,604 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-31 08:45:51,608 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-31 08:45:51,609 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 08:45:51" (1/1) ... [2022-01-31 08:45:51,610 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@102a64ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:45:51, skipping insertion in model container [2022-01-31 08:45:51,610 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 08:45:51" (1/1) ... [2022-01-31 08:45:51,616 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-31 08:45:51,630 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-31 08:45:51,793 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/reducercommutativity/sum10-1.i[1277,1290] [2022-01-31 08:45:51,796 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 08:45:51,803 INFO L203 MainTranslator]: Completed pre-run [2022-01-31 08:45:51,837 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/reducercommutativity/sum10-1.i[1277,1290] [2022-01-31 08:45:51,843 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 08:45:51,854 INFO L208 MainTranslator]: Completed translation [2022-01-31 08:45:51,854 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:45:51 WrapperNode [2022-01-31 08:45:51,854 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-31 08:45:51,857 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-31 08:45:51,857 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-31 08:45:51,857 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-31 08:45:51,868 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:45:51" (1/1) ... [2022-01-31 08:45:51,869 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:45:51" (1/1) ... [2022-01-31 08:45:51,883 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:45:51" (1/1) ... [2022-01-31 08:45:51,883 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:45:51" (1/1) ... [2022-01-31 08:45:51,898 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:45:51" (1/1) ... [2022-01-31 08:45:51,901 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:45:51" (1/1) ... [2022-01-31 08:45:51,902 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:45:51" (1/1) ... [2022-01-31 08:45:51,904 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-31 08:45:51,905 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-31 08:45:51,905 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-31 08:45:51,905 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-31 08:45:51,912 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:45:51" (1/1) ... [2022-01-31 08:45:51,918 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 08:45:51,928 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 08:45:51,940 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) [2022-01-31 08:45:51,957 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 [2022-01-31 08:45:51,987 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-01-31 08:45:51,988 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-31 08:45:51,988 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-01-31 08:45:51,988 INFO L138 BoogieDeclarations]: Found implementation of procedure sum [2022-01-31 08:45:51,988 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-01-31 08:45:51,989 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-01-31 08:45:51,989 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-01-31 08:45:51,989 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2022-01-31 08:45:51,989 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2022-01-31 08:45:51,990 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-01-31 08:45:51,990 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-31 08:45:51,990 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-01-31 08:45:51,990 INFO L130 BoogieDeclarations]: Found specification of procedure sum [2022-01-31 08:45:51,990 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-31 08:45:51,990 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-01-31 08:45:51,991 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-31 08:45:51,993 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-31 08:45:51,993 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-31 08:45:51,993 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-01-31 08:45:51,993 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-31 08:45:51,993 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-31 08:45:52,076 INFO L234 CfgBuilder]: Building ICFG [2022-01-31 08:45:52,078 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-31 08:45:52,245 INFO L275 CfgBuilder]: Performing block encoding [2022-01-31 08:45:52,251 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-31 08:45:52,251 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-01-31 08:45:52,253 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 08:45:52 BoogieIcfgContainer [2022-01-31 08:45:52,253 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-31 08:45:52,259 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-31 08:45:52,259 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-31 08:45:52,261 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-31 08:45:52,264 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 08:45:52" (1/1) ... [2022-01-31 08:45:52,282 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 31.01 08:45:52 BasicIcfg [2022-01-31 08:45:52,283 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-31 08:45:52,284 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-31 08:45:52,284 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-31 08:45:52,286 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-31 08:45:52,287 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 08:45:51" (1/4) ... [2022-01-31 08:45:52,287 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31e3aac6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 08:45:52, skipping insertion in model container [2022-01-31 08:45:52,287 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:45:51" (2/4) ... [2022-01-31 08:45:52,288 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31e3aac6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 08:45:52, skipping insertion in model container [2022-01-31 08:45:52,288 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 08:45:52" (3/4) ... [2022-01-31 08:45:52,288 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31e3aac6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.01 08:45:52, skipping insertion in model container [2022-01-31 08:45:52,288 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 31.01 08:45:52" (4/4) ... [2022-01-31 08:45:52,289 INFO L111 eAbstractionObserver]: Analyzing ICFG sum10-1.iJordan [2022-01-31 08:45:52,294 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2022-01-31 08:45:52,294 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-31 08:45:52,333 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-31 08:45:52,339 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=ForwardPredicates, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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 [2022-01-31 08:45:52,339 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-31 08:45:52,362 INFO L276 IsEmpty]: Start isEmpty. Operand has 31 states, 21 states have (on average 1.380952380952381) internal successors, (29), 22 states have internal predecessors, (29), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-01-31 08:45:52,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-01-31 08:45:52,369 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 08:45:52,369 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 08:45:52,371 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 08:45:52,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 08:45:52,375 INFO L85 PathProgramCache]: Analyzing trace with hash 142417289, now seen corresponding path program 1 times [2022-01-31 08:45:52,383 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 08:45:52,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157859494] [2022-01-31 08:45:52,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 08:45:52,384 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 08:45:52,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 08:45:52,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 08:45:52,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 08:45:52,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-01-31 08:45:52,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 08:45:52,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-01-31 08:45:52,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 08:45:52,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-01-31 08:45:52,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 08:45:52,660 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-01-31 08:45:52,660 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 08:45:52,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157859494] [2022-01-31 08:45:52,661 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157859494] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 08:45:52,661 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 08:45:52,662 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-31 08:45:52,663 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360003291] [2022-01-31 08:45:52,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 08:45:52,667 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-31 08:45:52,667 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 08:45:52,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-31 08:45:52,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-31 08:45:52,698 INFO L87 Difference]: Start difference. First operand has 31 states, 21 states have (on average 1.380952380952381) internal successors, (29), 22 states have internal predecessors, (29), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 2 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 08:45:52,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 08:45:52,747 INFO L93 Difference]: Finished difference Result 31 states and 35 transitions. [2022-01-31 08:45:52,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-31 08:45:52,750 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 2 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 32 [2022-01-31 08:45:52,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 08:45:52,760 INFO L225 Difference]: With dead ends: 31 [2022-01-31 08:45:52,760 INFO L226 Difference]: Without dead ends: 26 [2022-01-31 08:45:52,762 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-31 08:45:52,767 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 22 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 08:45:52,768 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 35 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 08:45:52,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-01-31 08:45:52,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2022-01-31 08:45:52,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 18 states have internal predecessors, (21), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 08:45:52,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2022-01-31 08:45:52,805 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 32 [2022-01-31 08:45:52,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 08:45:52,806 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2022-01-31 08:45:52,806 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 2 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 08:45:52,806 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2022-01-31 08:45:52,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-01-31 08:45:52,808 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 08:45:52,808 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 08:45:52,808 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-31 08:45:52,809 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 08:45:52,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 08:45:52,810 INFO L85 PathProgramCache]: Analyzing trace with hash -1780278, now seen corresponding path program 1 times [2022-01-31 08:45:52,811 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 08:45:52,811 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740455146] [2022-01-31 08:45:52,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 08:45:52,811 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 08:45:52,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 08:45:52,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 08:45:52,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 08:45:52,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-01-31 08:45:52,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 08:45:52,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-01-31 08:45:52,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 08:45:52,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-01-31 08:45:52,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 08:45:52,979 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-01-31 08:45:52,980 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 08:45:52,980 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740455146] [2022-01-31 08:45:52,980 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740455146] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 08:45:52,980 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [297728271] [2022-01-31 08:45:52,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 08:45:52,981 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 08:45:52,981 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 08:45:52,985 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) [2022-01-31 08:45:52,986 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-31 08:45:53,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 08:45:53,071 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-31 08:45:53,077 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 08:45:53,198 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-01-31 08:45:53,198 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-31 08:45:53,199 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [297728271] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 08:45:53,199 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-31 08:45:53,199 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2022-01-31 08:45:53,200 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302046731] [2022-01-31 08:45:53,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 08:45:53,201 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-31 08:45:53,201 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 08:45:53,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-31 08:45:53,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-01-31 08:45:53,202 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 08:45:53,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 08:45:53,210 INFO L93 Difference]: Finished difference Result 28 states and 32 transitions. [2022-01-31 08:45:53,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-31 08:45:53,210 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 32 [2022-01-31 08:45:53,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 08:45:53,211 INFO L225 Difference]: With dead ends: 28 [2022-01-31 08:45:53,211 INFO L226 Difference]: Without dead ends: 28 [2022-01-31 08:45:53,211 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-01-31 08:45:53,213 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 1 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 08:45:53,213 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 54 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 08:45:53,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2022-01-31 08:45:53,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2022-01-31 08:45:53,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 19 states have internal predecessors, (22), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 08:45:53,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2022-01-31 08:45:53,219 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 32 [2022-01-31 08:45:53,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 08:45:53,219 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2022-01-31 08:45:53,219 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 08:45:53,219 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2022-01-31 08:45:53,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-01-31 08:45:53,220 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 08:45:53,220 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 08:45:53,240 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-01-31 08:45:53,431 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 08:45:53,432 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 08:45:53,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 08:45:53,432 INFO L85 PathProgramCache]: Analyzing trace with hash 561300940, now seen corresponding path program 1 times [2022-01-31 08:45:53,432 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 08:45:53,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343240353] [2022-01-31 08:45:53,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 08:45:53,433 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 08:45:53,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 08:45:53,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 08:45:53,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 08:45:53,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-01-31 08:45:53,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 08:45:53,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-01-31 08:45:53,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 08:45:53,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-01-31 08:45:53,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 08:45:53,538 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-01-31 08:45:53,539 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 08:45:53,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343240353] [2022-01-31 08:45:53,539 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343240353] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 08:45:53,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1850020315] [2022-01-31 08:45:53,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 08:45:53,540 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 08:45:53,540 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 08:45:53,541 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) [2022-01-31 08:45:53,553 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-31 08:45:53,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 08:45:53,607 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-31 08:45:53,609 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 08:45:53,664 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-01-31 08:45:53,664 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-31 08:45:53,664 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1850020315] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 08:45:53,665 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-31 08:45:53,665 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 6 [2022-01-31 08:45:53,665 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415297797] [2022-01-31 08:45:53,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 08:45:53,666 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-31 08:45:53,666 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 08:45:53,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-31 08:45:53,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-01-31 08:45:53,667 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 08:45:53,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 08:45:53,677 INFO L93 Difference]: Finished difference Result 29 states and 33 transitions. [2022-01-31 08:45:53,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-31 08:45:53,678 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 34 [2022-01-31 08:45:53,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 08:45:53,678 INFO L225 Difference]: With dead ends: 29 [2022-01-31 08:45:53,679 INFO L226 Difference]: Without dead ends: 29 [2022-01-31 08:45:53,679 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-01-31 08:45:53,680 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 1 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 08:45:53,681 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 54 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 08:45:53,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-01-31 08:45:53,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2022-01-31 08:45:53,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 20 states have (on average 1.15) internal successors, (23), 20 states have internal predecessors, (23), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 08:45:53,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2022-01-31 08:45:53,685 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 34 [2022-01-31 08:45:53,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 08:45:53,686 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2022-01-31 08:45:53,686 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 08:45:53,686 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2022-01-31 08:45:53,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-01-31 08:45:53,687 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 08:45:53,687 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 08:45:53,719 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-31 08:45:53,915 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-01-31 08:45:53,916 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 08:45:53,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 08:45:53,916 INFO L85 PathProgramCache]: Analyzing trace with hash -1061096375, now seen corresponding path program 1 times [2022-01-31 08:45:53,917 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 08:45:53,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99436079] [2022-01-31 08:45:53,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 08:45:53,917 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 08:45:53,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 08:45:53,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 08:45:53,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 08:45:53,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-01-31 08:45:53,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 08:45:53,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-01-31 08:45:54,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 08:45:54,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-01-31 08:45:54,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 08:45:54,050 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-01-31 08:45:54,050 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 08:45:54,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99436079] [2022-01-31 08:45:54,051 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99436079] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 08:45:54,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [412248766] [2022-01-31 08:45:54,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 08:45:54,051 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 08:45:54,051 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 08:45:54,060 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-31 08:45:54,089 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-01-31 08:45:54,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 08:45:54,148 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-31 08:45:54,154 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 08:45:54,253 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-01-31 08:45:54,253 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-31 08:45:54,254 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [412248766] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 08:45:54,254 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-31 08:45:54,254 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2022-01-31 08:45:54,255 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771434252] [2022-01-31 08:45:54,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 08:45:54,255 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-31 08:45:54,255 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 08:45:54,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-31 08:45:54,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-01-31 08:45:54,256 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 08:45:54,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 08:45:54,271 INFO L93 Difference]: Finished difference Result 30 states and 34 transitions. [2022-01-31 08:45:54,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-31 08:45:54,272 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 40 [2022-01-31 08:45:54,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 08:45:54,273 INFO L225 Difference]: With dead ends: 30 [2022-01-31 08:45:54,273 INFO L226 Difference]: Without dead ends: 30 [2022-01-31 08:45:54,273 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-01-31 08:45:54,277 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 1 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 08:45:54,281 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 54 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 08:45:54,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-01-31 08:45:54,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2022-01-31 08:45:54,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 21 states have internal predecessors, (24), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 08:45:54,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2022-01-31 08:45:54,291 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 40 [2022-01-31 08:45:54,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 08:45:54,292 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2022-01-31 08:45:54,293 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 08:45:54,293 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2022-01-31 08:45:54,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-01-31 08:45:54,299 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 08:45:54,300 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 08:45:54,327 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-01-31 08:45:54,524 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 08:45:54,525 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 08:45:54,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 08:45:54,526 INFO L85 PathProgramCache]: Analyzing trace with hash -619501722, now seen corresponding path program 1 times [2022-01-31 08:45:54,526 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 08:45:54,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622759788] [2022-01-31 08:45:54,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 08:45:54,526 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 08:45:54,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 08:45:54,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 08:45:54,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 08:45:54,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-01-31 08:45:54,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 08:45:54,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-01-31 08:45:54,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 08:45:54,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-01-31 08:45:54,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 08:45:54,588 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-01-31 08:45:54,589 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 08:45:54,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622759788] [2022-01-31 08:45:54,589 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622759788] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 08:45:54,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [299422040] [2022-01-31 08:45:54,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 08:45:54,589 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 08:45:54,589 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 08:45:54,591 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-31 08:45:54,618 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-01-31 08:45:54,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 08:45:54,660 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-31 08:45:54,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 08:45:54,752 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-01-31 08:45:54,753 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 08:45:54,843 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-01-31 08:45:54,844 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [299422040] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 08:45:54,844 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 08:45:54,844 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 8 [2022-01-31 08:45:54,844 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781849801] [2022-01-31 08:45:54,844 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 08:45:54,846 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-31 08:45:54,847 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 08:45:54,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-31 08:45:54,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-31 08:45:54,848 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand has 8 states, 8 states have (on average 4.375) internal successors, (35), 7 states have internal predecessors, (35), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-31 08:45:54,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 08:45:54,962 INFO L93 Difference]: Finished difference Result 35 states and 39 transitions. [2022-01-31 08:45:54,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-31 08:45:54,963 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.375) internal successors, (35), 7 states have internal predecessors, (35), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 42 [2022-01-31 08:45:54,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 08:45:54,964 INFO L225 Difference]: With dead ends: 35 [2022-01-31 08:45:54,964 INFO L226 Difference]: Without dead ends: 35 [2022-01-31 08:45:54,964 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2022-01-31 08:45:54,965 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 28 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 08:45:54,965 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 37 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 08:45:54,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-01-31 08:45:54,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2022-01-31 08:45:54,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 27 states have (on average 1.1111111111111112) internal successors, (30), 27 states have internal predecessors, (30), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 08:45:54,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2022-01-31 08:45:54,969 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 42 [2022-01-31 08:45:54,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 08:45:54,969 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2022-01-31 08:45:54,969 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.375) internal successors, (35), 7 states have internal predecessors, (35), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-31 08:45:54,969 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2022-01-31 08:45:54,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-01-31 08:45:54,970 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 08:45:54,970 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 08:45:54,995 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-01-31 08:45:55,170 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 08:45:55,171 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 08:45:55,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 08:45:55,171 INFO L85 PathProgramCache]: Analyzing trace with hash 1074871916, now seen corresponding path program 2 times [2022-01-31 08:45:55,172 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 08:45:55,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142735177] [2022-01-31 08:45:55,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 08:45:55,172 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 08:45:55,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 08:45:55,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 08:45:55,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 08:45:55,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-01-31 08:45:55,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 08:45:55,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-01-31 08:45:55,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 08:45:55,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-01-31 08:45:55,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 08:45:55,253 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 9 proven. 11 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 08:45:55,253 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 08:45:55,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142735177] [2022-01-31 08:45:55,254 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142735177] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 08:45:55,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1712618385] [2022-01-31 08:45:55,254 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-31 08:45:55,254 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 08:45:55,254 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 08:45:55,255 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-31 08:45:55,257 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-01-31 08:45:55,331 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-31 08:45:55,331 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 08:45:55,333 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-31 08:45:55,339 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 08:45:55,433 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-01-31 08:45:55,433 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 08:45:55,555 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-01-31 08:45:55,555 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1712618385] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 08:45:55,555 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 08:45:55,555 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 15 [2022-01-31 08:45:55,556 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403653010] [2022-01-31 08:45:55,556 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 08:45:55,556 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-31 08:45:55,556 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 08:45:55,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-31 08:45:55,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2022-01-31 08:45:55,557 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand has 15 states, 15 states have (on average 3.466666666666667) internal successors, (52), 14 states have internal predecessors, (52), 2 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-01-31 08:45:55,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 08:45:55,790 INFO L93 Difference]: Finished difference Result 50 states and 54 transitions. [2022-01-31 08:45:55,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-31 08:45:55,791 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.466666666666667) internal successors, (52), 14 states have internal predecessors, (52), 2 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 48 [2022-01-31 08:45:55,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 08:45:55,794 INFO L225 Difference]: With dead ends: 50 [2022-01-31 08:45:55,794 INFO L226 Difference]: Without dead ends: 50 [2022-01-31 08:45:55,794 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=213, Invalid=489, Unknown=0, NotChecked=0, Total=702 [2022-01-31 08:45:55,797 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 47 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 08:45:55,797 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [50 Valid, 50 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 08:45:55,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2022-01-31 08:45:55,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 49. [2022-01-31 08:45:55,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 41 states have (on average 1.0731707317073171) internal successors, (44), 41 states have internal predecessors, (44), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 08:45:55,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 53 transitions. [2022-01-31 08:45:55,813 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 53 transitions. Word has length 48 [2022-01-31 08:45:55,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 08:45:55,813 INFO L470 AbstractCegarLoop]: Abstraction has 49 states and 53 transitions. [2022-01-31 08:45:55,814 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.466666666666667) internal successors, (52), 14 states have internal predecessors, (52), 2 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-01-31 08:45:55,814 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 53 transitions. [2022-01-31 08:45:55,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-31 08:45:55,815 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 08:45:55,815 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 08:45:55,839 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-01-31 08:45:56,015 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 08:45:56,016 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 08:45:56,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 08:45:56,016 INFO L85 PathProgramCache]: Analyzing trace with hash 859300597, now seen corresponding path program 3 times [2022-01-31 08:45:56,016 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 08:45:56,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348836493] [2022-01-31 08:45:56,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 08:45:56,017 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 08:45:56,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 08:45:56,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 08:45:56,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 08:45:56,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 08:45:56,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 08:45:56,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-01-31 08:45:56,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 08:45:56,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-01-31 08:45:56,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 08:45:56,094 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 163 trivial. 0 not checked. [2022-01-31 08:45:56,094 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 08:45:56,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348836493] [2022-01-31 08:45:56,094 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348836493] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 08:45:56,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1018416404] [2022-01-31 08:45:56,095 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-31 08:45:56,095 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 08:45:56,095 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 08:45:56,096 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-31 08:45:56,104 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-01-31 08:45:56,172 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-31 08:45:56,172 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 08:45:56,173 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-31 08:45:56,175 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 08:45:56,273 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 34 proven. 1 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2022-01-31 08:45:56,273 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 08:45:56,379 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 163 trivial. 0 not checked. [2022-01-31 08:45:56,379 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1018416404] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 08:45:56,379 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 08:45:56,379 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 8 [2022-01-31 08:45:56,379 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706177703] [2022-01-31 08:45:56,379 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 08:45:56,380 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-31 08:45:56,380 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 08:45:56,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-31 08:45:56,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-31 08:45:56,381 INFO L87 Difference]: Start difference. First operand 49 states and 53 transitions. Second operand has 8 states, 8 states have (on average 4.375) internal successors, (35), 7 states have internal predecessors, (35), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-31 08:45:56,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 08:45:56,474 INFO L93 Difference]: Finished difference Result 55 states and 59 transitions. [2022-01-31 08:45:56,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-31 08:45:56,474 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.375) internal successors, (35), 7 states have internal predecessors, (35), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 66 [2022-01-31 08:45:56,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 08:45:56,475 INFO L225 Difference]: With dead ends: 55 [2022-01-31 08:45:56,475 INFO L226 Difference]: Without dead ends: 55 [2022-01-31 08:45:56,476 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2022-01-31 08:45:56,476 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 28 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 08:45:56,477 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 37 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 08:45:56,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2022-01-31 08:45:56,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2022-01-31 08:45:56,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 47 states have (on average 1.0638297872340425) internal successors, (50), 47 states have internal predecessors, (50), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 08:45:56,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 59 transitions. [2022-01-31 08:45:56,480 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 59 transitions. Word has length 66 [2022-01-31 08:45:56,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 08:45:56,481 INFO L470 AbstractCegarLoop]: Abstraction has 55 states and 59 transitions. [2022-01-31 08:45:56,481 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.375) internal successors, (35), 7 states have internal predecessors, (35), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-31 08:45:56,481 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 59 transitions. [2022-01-31 08:45:56,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-31 08:45:56,482 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 08:45:56,482 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 6, 6, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 08:45:56,509 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-01-31 08:45:56,695 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 08:45:56,696 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 08:45:56,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 08:45:56,696 INFO L85 PathProgramCache]: Analyzing trace with hash 49480076, now seen corresponding path program 4 times [2022-01-31 08:45:56,696 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 08:45:56,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200637448] [2022-01-31 08:45:56,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 08:45:56,696 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 08:45:56,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 08:45:56,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 08:45:56,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 08:45:56,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 08:45:56,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 08:45:56,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-01-31 08:45:56,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 08:45:56,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-01-31 08:45:56,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 08:45:56,828 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2022-01-31 08:45:56,829 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 08:45:56,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200637448] [2022-01-31 08:45:56,829 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200637448] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 08:45:56,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [713143287] [2022-01-31 08:45:56,829 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-31 08:45:56,829 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 08:45:56,829 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 08:45:56,830 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-31 08:45:56,837 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-01-31 08:45:56,903 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-31 08:45:56,903 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 08:45:56,904 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-31 08:45:56,906 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 08:45:57,011 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 28 proven. 4 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2022-01-31 08:45:57,012 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 08:45:57,119 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2022-01-31 08:45:57,119 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [713143287] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 08:45:57,120 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 08:45:57,120 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 9 [2022-01-31 08:45:57,120 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243360592] [2022-01-31 08:45:57,120 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 08:45:57,120 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-31 08:45:57,121 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 08:45:57,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-31 08:45:57,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2022-01-31 08:45:57,121 INFO L87 Difference]: Start difference. First operand 55 states and 59 transitions. Second operand has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 8 states have internal predecessors, (40), 2 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-01-31 08:45:57,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 08:45:57,229 INFO L93 Difference]: Finished difference Result 63 states and 67 transitions. [2022-01-31 08:45:57,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-31 08:45:57,229 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 8 states have internal predecessors, (40), 2 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 72 [2022-01-31 08:45:57,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 08:45:57,230 INFO L225 Difference]: With dead ends: 63 [2022-01-31 08:45:57,230 INFO L226 Difference]: Without dead ends: 63 [2022-01-31 08:45:57,230 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=126, Unknown=0, NotChecked=0, Total=210 [2022-01-31 08:45:57,231 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 33 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 08:45:57,231 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 37 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 08:45:57,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2022-01-31 08:45:57,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2022-01-31 08:45:57,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 55 states have (on average 1.0545454545454545) internal successors, (58), 55 states have internal predecessors, (58), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 08:45:57,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 67 transitions. [2022-01-31 08:45:57,235 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 67 transitions. Word has length 72 [2022-01-31 08:45:57,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 08:45:57,235 INFO L470 AbstractCegarLoop]: Abstraction has 63 states and 67 transitions. [2022-01-31 08:45:57,236 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 8 states have internal predecessors, (40), 2 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-01-31 08:45:57,236 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 67 transitions. [2022-01-31 08:45:57,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-01-31 08:45:57,237 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 08:45:57,237 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 10, 10, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 08:45:57,263 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-01-31 08:45:57,459 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 08:45:57,460 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 08:45:57,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 08:45:57,460 INFO L85 PathProgramCache]: Analyzing trace with hash 1050867968, now seen corresponding path program 5 times [2022-01-31 08:45:57,461 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 08:45:57,461 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76954667] [2022-01-31 08:45:57,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 08:45:57,461 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 08:45:57,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 08:45:57,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 08:45:57,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 08:45:57,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 08:45:57,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 08:45:57,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-01-31 08:45:57,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 08:45:57,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-01-31 08:45:57,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 08:45:57,618 INFO L134 CoverageAnalysis]: Checked inductivity of 491 backedges. 0 proven. 212 refuted. 0 times theorem prover too weak. 279 trivial. 0 not checked. [2022-01-31 08:45:57,619 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 08:45:57,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76954667] [2022-01-31 08:45:57,619 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76954667] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 08:45:57,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1349558534] [2022-01-31 08:45:57,619 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-31 08:45:57,619 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 08:45:57,620 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 08:45:57,621 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-31 08:45:57,645 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-01-31 08:45:57,912 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 14 check-sat command(s) [2022-01-31 08:45:57,912 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 08:45:57,916 INFO L263 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-31 08:45:57,919 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 08:45:58,044 INFO L134 CoverageAnalysis]: Checked inductivity of 491 backedges. 172 proven. 36 refuted. 0 times theorem prover too weak. 283 trivial. 0 not checked. [2022-01-31 08:45:58,045 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 08:45:58,200 INFO L134 CoverageAnalysis]: Checked inductivity of 491 backedges. 0 proven. 212 refuted. 0 times theorem prover too weak. 279 trivial. 0 not checked. [2022-01-31 08:45:58,200 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1349558534] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 08:45:58,201 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 08:45:58,201 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 13 [2022-01-31 08:45:58,201 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544136844] [2022-01-31 08:45:58,201 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 08:45:58,201 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-31 08:45:58,202 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 08:45:58,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-31 08:45:58,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2022-01-31 08:45:58,202 INFO L87 Difference]: Start difference. First operand 63 states and 67 transitions. Second operand has 13 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 12 states have internal predecessors, (50), 2 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-01-31 08:45:58,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 08:45:58,369 INFO L93 Difference]: Finished difference Result 71 states and 75 transitions. [2022-01-31 08:45:58,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-31 08:45:58,370 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 12 states have internal predecessors, (50), 2 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 96 [2022-01-31 08:45:58,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 08:45:58,371 INFO L225 Difference]: With dead ends: 71 [2022-01-31 08:45:58,371 INFO L226 Difference]: Without dead ends: 71 [2022-01-31 08:45:58,371 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 196 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=198, Invalid=308, Unknown=0, NotChecked=0, Total=506 [2022-01-31 08:45:58,373 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 38 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 08:45:58,373 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 47 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 08:45:58,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2022-01-31 08:45:58,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2022-01-31 08:45:58,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 63 states have (on average 1.0476190476190477) internal successors, (66), 63 states have internal predecessors, (66), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 08:45:58,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 75 transitions. [2022-01-31 08:45:58,384 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 75 transitions. Word has length 96 [2022-01-31 08:45:58,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 08:45:58,384 INFO L470 AbstractCegarLoop]: Abstraction has 71 states and 75 transitions. [2022-01-31 08:45:58,384 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 12 states have internal predecessors, (50), 2 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-01-31 08:45:58,385 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 75 transitions. [2022-01-31 08:45:58,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-01-31 08:45:58,390 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 08:45:58,390 INFO L514 BasicCegarLoop]: trace histogram [30, 30, 10, 10, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 08:45:58,419 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-01-31 08:45:58,615 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-01-31 08:45:58,616 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 08:45:58,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 08:45:58,616 INFO L85 PathProgramCache]: Analyzing trace with hash 1644090484, now seen corresponding path program 6 times [2022-01-31 08:45:58,616 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 08:45:58,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428896214] [2022-01-31 08:45:58,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 08:45:58,617 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 08:45:58,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 08:45:58,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 08:45:58,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 08:45:58,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 08:45:58,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 08:45:58,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-01-31 08:45:58,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 08:45:58,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-01-31 08:45:58,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 08:45:58,729 INFO L134 CoverageAnalysis]: Checked inductivity of 1091 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2022-01-31 08:45:58,729 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 08:45:58,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428896214] [2022-01-31 08:45:58,730 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1428896214] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 08:45:58,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1585376521] [2022-01-31 08:45:58,730 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-31 08:45:58,730 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 08:45:58,730 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 08:45:58,731 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-31 08:45:58,756 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-01-31 08:45:58,946 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2022-01-31 08:45:58,946 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 08:45:58,948 INFO L263 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-31 08:45:58,950 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 08:45:59,134 INFO L134 CoverageAnalysis]: Checked inductivity of 1091 backedges. 450 proven. 16 refuted. 0 times theorem prover too weak. 625 trivial. 0 not checked. [2022-01-31 08:45:59,134 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 08:45:59,325 INFO L134 CoverageAnalysis]: Checked inductivity of 1091 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2022-01-31 08:45:59,326 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1585376521] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 08:45:59,326 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 08:45:59,326 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 13 [2022-01-31 08:45:59,326 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511687868] [2022-01-31 08:45:59,326 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 08:45:59,327 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-31 08:45:59,327 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 08:45:59,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-31 08:45:59,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2022-01-31 08:45:59,327 INFO L87 Difference]: Start difference. First operand 71 states and 75 transitions. Second operand has 13 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 12 states have internal predecessors, (47), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-31 08:45:59,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 08:45:59,493 INFO L93 Difference]: Finished difference Result 81 states and 85 transitions. [2022-01-31 08:45:59,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-31 08:45:59,494 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 12 states have internal predecessors, (47), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 120 [2022-01-31 08:45:59,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 08:45:59,495 INFO L225 Difference]: With dead ends: 81 [2022-01-31 08:45:59,495 INFO L226 Difference]: Without dead ends: 81 [2022-01-31 08:45:59,495 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 242 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=177, Invalid=285, Unknown=0, NotChecked=0, Total=462 [2022-01-31 08:45:59,496 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 36 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 08:45:59,496 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [39 Valid, 52 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 08:45:59,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2022-01-31 08:45:59,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2022-01-31 08:45:59,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 73 states have (on average 1.0410958904109588) internal successors, (76), 73 states have internal predecessors, (76), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 08:45:59,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 85 transitions. [2022-01-31 08:45:59,500 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 85 transitions. Word has length 120 [2022-01-31 08:45:59,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 08:45:59,500 INFO L470 AbstractCegarLoop]: Abstraction has 81 states and 85 transitions. [2022-01-31 08:45:59,501 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 12 states have internal predecessors, (47), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-31 08:45:59,501 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 85 transitions. [2022-01-31 08:45:59,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-01-31 08:45:59,502 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 08:45:59,502 INFO L514 BasicCegarLoop]: trace histogram [30, 30, 10, 10, 9, 9, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 08:45:59,528 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-01-31 08:45:59,708 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-01-31 08:45:59,708 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 08:45:59,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 08:45:59,708 INFO L85 PathProgramCache]: Analyzing trace with hash -1258792507, now seen corresponding path program 7 times [2022-01-31 08:45:59,708 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 08:45:59,709 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217259134] [2022-01-31 08:45:59,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 08:45:59,709 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 08:46:00,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 08:46:07,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 08:46:07,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 08:46:07,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 08:46:07,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 08:46:09,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-01-31 08:46:09,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 08:46:11,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-01-31 08:46:11,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat