/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/float-benchs/zonotope_3.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-d966a43 [2022-01-31 16:46:22,394 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-31 16:46:22,396 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-31 16:46:22,457 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-31 16:46:22,457 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-31 16:46:22,458 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-31 16:46:22,462 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-31 16:46:22,463 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-31 16:46:22,464 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-31 16:46:22,465 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-31 16:46:22,465 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-31 16:46:22,466 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-31 16:46:22,466 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-31 16:46:22,469 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-31 16:46:22,483 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-31 16:46:22,485 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-31 16:46:22,486 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-31 16:46:22,489 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-31 16:46:22,493 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-31 16:46:22,494 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-31 16:46:22,495 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-31 16:46:22,498 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-31 16:46:22,499 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-31 16:46:22,500 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-31 16:46:22,504 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-31 16:46:22,508 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-31 16:46:22,509 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-31 16:46:22,509 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-31 16:46:22,514 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2022-01-31 16:46:22,524 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-31 16:46:22,525 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-31 16:46:22,526 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-31 16:46:22,526 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-31 16:46:22,526 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-31 16:46:22,526 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-31 16:46:22,526 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-31 16:46:22,527 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-31 16:46:22,527 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-31 16:46:22,527 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-31 16:46:22,527 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-31 16:46:22,527 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-31 16:46:22,527 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-31 16:46:22,528 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-31 16:46:22,528 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-31 16:46:22,528 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-31 16:46:22,528 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-31 16:46:22,528 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-31 16:46:22,528 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 16:46:22,528 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-31 16:46:22,528 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-31 16:46:22,529 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-31 16:46:22,529 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-31 16:46:22,812 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-31 16:46:22,831 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-31 16:46:22,832 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-31 16:46:22,833 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-31 16:46:22,833 INFO L275 PluginConnector]: CDTParser initialized [2022-01-31 16:46:22,834 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-benchs/zonotope_3.c.v+lhb-reducer.c [2022-01-31 16:46:22,894 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8deca5f4f/f346d148d71e4c42aa84117266d051b9/FLAG43177ba5e [2022-01-31 16:46:23,277 INFO L306 CDTParser]: Found 1 translation units. [2022-01-31 16:46:23,277 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-benchs/zonotope_3.c.v+lhb-reducer.c [2022-01-31 16:46:23,289 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8deca5f4f/f346d148d71e4c42aa84117266d051b9/FLAG43177ba5e [2022-01-31 16:46:23,303 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8deca5f4f/f346d148d71e4c42aa84117266d051b9 [2022-01-31 16:46:23,305 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-31 16:46:23,305 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-31 16:46:23,309 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-31 16:46:23,309 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-31 16:46:23,311 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-31 16:46:23,312 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 04:46:23" (1/1) ... [2022-01-31 16:46:23,312 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9f6e7c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:46:23, skipping insertion in model container [2022-01-31 16:46:23,313 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 04:46:23" (1/1) ... [2022-01-31 16:46:23,317 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-31 16:46:23,350 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-31 16:46:23,551 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/float-benchs/zonotope_3.c.v+lhb-reducer.c[12131,12144] [2022-01-31 16:46:23,558 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 16:46:23,564 INFO L203 MainTranslator]: Completed pre-run [2022-01-31 16:46:23,595 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/float-benchs/zonotope_3.c.v+lhb-reducer.c[12131,12144] [2022-01-31 16:46:23,599 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 16:46:23,614 INFO L208 MainTranslator]: Completed translation [2022-01-31 16:46:23,614 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:46:23 WrapperNode [2022-01-31 16:46:23,614 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-31 16:46:23,615 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-31 16:46:23,615 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-31 16:46:23,615 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-31 16:46:23,625 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:46:23" (1/1) ... [2022-01-31 16:46:23,626 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:46:23" (1/1) ... [2022-01-31 16:46:23,632 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:46:23" (1/1) ... [2022-01-31 16:46:23,632 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:46:23" (1/1) ... [2022-01-31 16:46:23,643 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:46:23" (1/1) ... [2022-01-31 16:46:23,646 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:46:23" (1/1) ... [2022-01-31 16:46:23,648 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:46:23" (1/1) ... [2022-01-31 16:46:23,651 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-31 16:46:23,651 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-31 16:46:23,651 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-31 16:46:23,651 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-31 16:46:23,652 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:46:23" (1/1) ... [2022-01-31 16:46:23,657 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 16:46:23,665 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 16:46:23,708 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 16:46:23,716 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 16:46:23,735 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-01-31 16:46:23,735 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-31 16:46:23,735 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-01-31 16:46:23,736 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-01-31 16:46:23,736 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-01-31 16:46:23,736 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-01-31 16:46:23,736 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-01-31 16:46:23,736 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-01-31 16:46:23,736 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-31 16:46:23,736 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2022-01-31 16:46:23,736 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-01-31 16:46:23,736 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-01-31 16:46:23,736 INFO L130 BoogieDeclarations]: Found specification of procedure f [2022-01-31 16:46:23,736 INFO L130 BoogieDeclarations]: Found specification of procedure g [2022-01-31 16:46:23,737 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-01-31 16:46:23,737 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-01-31 16:46:23,737 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-31 16:46:23,737 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-31 16:46:23,737 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-31 16:46:23,737 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-31 16:46:23,737 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-31 16:46:23,811 INFO L234 CfgBuilder]: Building ICFG [2022-01-31 16:46:23,812 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-31 16:46:24,076 INFO L275 CfgBuilder]: Performing block encoding [2022-01-31 16:46:24,096 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-31 16:46:24,096 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-31 16:46:24,097 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 04:46:24 BoogieIcfgContainer [2022-01-31 16:46:24,097 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-31 16:46:24,098 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-31 16:46:24,098 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-31 16:46:24,101 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-31 16:46:24,117 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 04:46:24" (1/1) ... [2022-01-31 16:46:24,157 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 31.01 04:46:24 BasicIcfg [2022-01-31 16:46:24,157 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-31 16:46:24,159 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-31 16:46:24,159 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-31 16:46:24,161 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-31 16:46:24,161 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 04:46:23" (1/4) ... [2022-01-31 16:46:24,162 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d991fbd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 04:46:24, skipping insertion in model container [2022-01-31 16:46:24,162 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:46:23" (2/4) ... [2022-01-31 16:46:24,162 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d991fbd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 04:46:24, skipping insertion in model container [2022-01-31 16:46:24,162 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 04:46:24" (3/4) ... [2022-01-31 16:46:24,163 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d991fbd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.01 04:46:24, skipping insertion in model container [2022-01-31 16:46:24,163 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 31.01 04:46:24" (4/4) ... [2022-01-31 16:46:24,164 INFO L111 eAbstractionObserver]: Analyzing ICFG zonotope_3.c.v+lhb-reducer.cJordan [2022-01-31 16:46:24,169 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2022-01-31 16:46:24,170 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-31 16:46:24,206 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-31 16:46:24,212 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 16:46:24,213 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-31 16:46:24,223 INFO L276 IsEmpty]: Start isEmpty. Operand has 59 states, 53 states have (on average 1.830188679245283) internal successors, (97), 54 states have internal predecessors, (97), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-31 16:46:24,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-01-31 16:46:24,232 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 16:46:24,232 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 16:46:24,233 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 16:46:24,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 16:46:24,236 INFO L85 PathProgramCache]: Analyzing trace with hash -1014472030, now seen corresponding path program 1 times [2022-01-31 16:46:24,242 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 16:46:24,242 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680013113] [2022-01-31 16:46:24,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 16:46:24,243 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 16:46:24,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 16:46:24,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 16:46:24,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 16:46:24,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 16:46:24,773 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 16:46:24,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680013113] [2022-01-31 16:46:24,774 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680013113] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 16:46:24,774 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 16:46:24,774 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-31 16:46:24,775 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280131396] [2022-01-31 16:46:24,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 16:46:24,779 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-31 16:46:24,780 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 16:46:24,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-31 16:46:24,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-31 16:46:24,807 INFO L87 Difference]: Start difference. First operand has 59 states, 53 states have (on average 1.830188679245283) internal successors, (97), 54 states have internal predecessors, (97), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 5 states have internal predecessors, (46), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 16:46:25,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 16:46:25,064 INFO L93 Difference]: Finished difference Result 67 states and 107 transitions. [2022-01-31 16:46:25,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-31 16:46:25,066 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 5 states have internal predecessors, (46), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 49 [2022-01-31 16:46:25,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 16:46:25,074 INFO L225 Difference]: With dead ends: 67 [2022-01-31 16:46:25,074 INFO L226 Difference]: Without dead ends: 55 [2022-01-31 16:46:25,077 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-01-31 16:46:25,080 INFO L933 BasicCegarLoop]: 100 mSDtfsCounter, 93 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 314 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 16:46:25,081 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [93 Valid, 314 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 16:46:25,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2022-01-31 16:46:25,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2022-01-31 16:46:25,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 51 states have (on average 1.0784313725490196) internal successors, (55), 51 states have internal predecessors, (55), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 16:46:25,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 58 transitions. [2022-01-31 16:46:25,110 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 58 transitions. Word has length 49 [2022-01-31 16:46:25,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 16:46:25,111 INFO L470 AbstractCegarLoop]: Abstraction has 55 states and 58 transitions. [2022-01-31 16:46:25,111 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 5 states have internal predecessors, (46), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 16:46:25,111 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 58 transitions. [2022-01-31 16:46:25,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-01-31 16:46:25,113 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 16:46:25,113 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 16:46:25,113 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-31 16:46:25,113 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 16:46:25,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 16:46:25,115 INFO L85 PathProgramCache]: Analyzing trace with hash -1013488927, now seen corresponding path program 1 times [2022-01-31 16:46:25,115 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 16:46:25,115 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070126943] [2022-01-31 16:46:25,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 16:46:25,116 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 16:46:25,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 16:46:25,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 16:46:25,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 16:46:25,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 16:46:25,402 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 16:46:25,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070126943] [2022-01-31 16:46:25,402 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070126943] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 16:46:25,402 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 16:46:25,403 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-01-31 16:46:25,403 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854682151] [2022-01-31 16:46:25,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 16:46:25,404 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-31 16:46:25,404 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 16:46:25,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-31 16:46:25,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2022-01-31 16:46:25,406 INFO L87 Difference]: Start difference. First operand 55 states and 58 transitions. Second operand has 13 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 12 states have internal predecessors, (46), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 16:46:25,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 16:46:25,521 INFO L93 Difference]: Finished difference Result 61 states and 66 transitions. [2022-01-31 16:46:25,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-31 16:46:25,524 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 12 states have internal predecessors, (46), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 49 [2022-01-31 16:46:25,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 16:46:25,525 INFO L225 Difference]: With dead ends: 61 [2022-01-31 16:46:25,525 INFO L226 Difference]: Without dead ends: 61 [2022-01-31 16:46:25,525 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2022-01-31 16:46:25,526 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 66 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 16:46:25,526 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [66 Valid, 108 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 16:46:25,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2022-01-31 16:46:25,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 57. [2022-01-31 16:46:25,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 53 states have (on average 1.0754716981132075) internal successors, (57), 53 states have internal predecessors, (57), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 16:46:25,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 60 transitions. [2022-01-31 16:46:25,531 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 60 transitions. Word has length 49 [2022-01-31 16:46:25,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 16:46:25,531 INFO L470 AbstractCegarLoop]: Abstraction has 57 states and 60 transitions. [2022-01-31 16:46:25,531 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 12 states have internal predecessors, (46), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 16:46:25,531 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 60 transitions. [2022-01-31 16:46:25,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-01-31 16:46:25,532 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 16:46:25,532 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 16:46:25,532 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-31 16:46:25,532 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 16:46:25,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 16:46:25,533 INFO L85 PathProgramCache]: Analyzing trace with hash 500788681, now seen corresponding path program 1 times [2022-01-31 16:46:25,533 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 16:46:25,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105392943] [2022-01-31 16:46:25,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 16:46:25,533 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 16:46:25,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 16:46:25,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 16:46:25,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 16:46:25,764 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 16:46:25,765 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 16:46:25,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105392943] [2022-01-31 16:46:25,766 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105392943] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 16:46:25,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [501904999] [2022-01-31 16:46:25,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 16:46:25,767 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 16:46:25,767 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 16:46:25,791 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 16:46:25,793 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 16:46:25,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 16:46:25,982 INFO L263 TraceCheckSpWp]: Trace formula consists of 906 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-31 16:46:25,987 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 16:46:26,195 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 16:46:26,196 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 16:46:26,520 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 16:46:26,520 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [501904999] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 16:46:26,521 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 16:46:26,521 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 26 [2022-01-31 16:46:26,523 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038978771] [2022-01-31 16:46:26,523 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 16:46:26,525 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-01-31 16:46:26,525 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 16:46:26,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-01-31 16:46:26,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2022-01-31 16:46:26,526 INFO L87 Difference]: Start difference. First operand 57 states and 60 transitions. Second operand has 26 states, 26 states have (on average 3.8846153846153846) internal successors, (101), 25 states have internal predecessors, (101), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 16:46:26,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 16:46:26,714 INFO L93 Difference]: Finished difference Result 129 states and 156 transitions. [2022-01-31 16:46:26,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-01-31 16:46:26,714 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.8846153846153846) internal successors, (101), 25 states have internal predecessors, (101), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 54 [2022-01-31 16:46:26,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 16:46:26,715 INFO L225 Difference]: With dead ends: 129 [2022-01-31 16:46:26,715 INFO L226 Difference]: Without dead ends: 129 [2022-01-31 16:46:26,716 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2022-01-31 16:46:26,716 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 314 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 314 SdHoareTripleChecker+Valid, 223 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 16:46:26,717 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [314 Valid, 223 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 16:46:26,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2022-01-31 16:46:26,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2022-01-31 16:46:26,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 125 states have (on average 1.224) internal successors, (153), 125 states have internal predecessors, (153), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 16:46:26,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 156 transitions. [2022-01-31 16:46:26,738 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 156 transitions. Word has length 54 [2022-01-31 16:46:26,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 16:46:26,738 INFO L470 AbstractCegarLoop]: Abstraction has 129 states and 156 transitions. [2022-01-31 16:46:26,739 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.8846153846153846) internal successors, (101), 25 states have internal predecessors, (101), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 16:46:26,739 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 156 transitions. [2022-01-31 16:46:26,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-01-31 16:46:26,741 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 16:46:26,741 INFO L514 BasicCegarLoop]: trace histogram [14, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:46:26,773 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-31 16:46:26,961 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 16:46:26,961 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 16:46:26,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 16:46:26,962 INFO L85 PathProgramCache]: Analyzing trace with hash -1916500023, now seen corresponding path program 2 times [2022-01-31 16:46:26,962 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 16:46:26,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967609987] [2022-01-31 16:46:26,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 16:46:26,963 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 16:46:27,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 16:46:27,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 16:46:27,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 16:46:27,425 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 0 proven. 416 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 16:46:27,425 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 16:46:27,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967609987] [2022-01-31 16:46:27,425 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967609987] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 16:46:27,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1263640980] [2022-01-31 16:46:27,426 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-31 16:46:27,426 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 16:46:27,426 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 16:46:27,427 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 16:46:27,454 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 16:46:27,670 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-31 16:46:27,671 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 16:46:27,675 INFO L263 TraceCheckSpWp]: Trace formula consists of 1410 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-31 16:46:27,680 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 16:46:27,904 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 0 proven. 416 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 16:46:27,905 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 16:46:28,756 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 0 proven. 416 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 16:46:28,756 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1263640980] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 16:46:28,756 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 16:46:28,757 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 25, 25] total 50 [2022-01-31 16:46:28,757 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049918707] [2022-01-31 16:46:28,757 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 16:46:28,757 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-01-31 16:46:28,758 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 16:46:28,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-01-31 16:46:28,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1178, Invalid=1272, Unknown=0, NotChecked=0, Total=2450 [2022-01-31 16:46:28,759 INFO L87 Difference]: Start difference. First operand 129 states and 156 transitions. Second operand has 50 states, 50 states have (on average 4.42) internal successors, (221), 49 states have internal predecessors, (221), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 16:46:29,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 16:46:29,054 INFO L93 Difference]: Finished difference Result 273 states and 348 transitions. [2022-01-31 16:46:29,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-01-31 16:46:29,056 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 4.42) internal successors, (221), 49 states have internal predecessors, (221), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 114 [2022-01-31 16:46:29,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 16:46:29,057 INFO L225 Difference]: With dead ends: 273 [2022-01-31 16:46:29,057 INFO L226 Difference]: Without dead ends: 273 [2022-01-31 16:46:29,058 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1178, Invalid=1272, Unknown=0, NotChecked=0, Total=2450 [2022-01-31 16:46:29,059 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 651 mSDsluCounter, 369 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 651 SdHoareTripleChecker+Valid, 407 SdHoareTripleChecker+Invalid, 317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 16:46:29,059 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [651 Valid, 407 Invalid, 317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 16:46:29,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2022-01-31 16:46:29,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 273. [2022-01-31 16:46:29,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 269 states have (on average 1.2825278810408922) internal successors, (345), 269 states have internal predecessors, (345), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 16:46:29,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 348 transitions. [2022-01-31 16:46:29,069 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 348 transitions. Word has length 114 [2022-01-31 16:46:29,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 16:46:29,069 INFO L470 AbstractCegarLoop]: Abstraction has 273 states and 348 transitions. [2022-01-31 16:46:29,069 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 4.42) internal successors, (221), 49 states have internal predecessors, (221), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 16:46:29,069 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 348 transitions. [2022-01-31 16:46:29,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2022-01-31 16:46:29,071 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 16:46:29,071 INFO L514 BasicCegarLoop]: trace histogram [38, 37, 37, 37, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:46:29,100 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 16:46:29,287 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,SelfDestructingSolverStorable3 [2022-01-31 16:46:29,288 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 16:46:29,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 16:46:29,288 INFO L85 PathProgramCache]: Analyzing trace with hash -880690231, now seen corresponding path program 3 times [2022-01-31 16:46:29,289 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 16:46:29,289 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170327160] [2022-01-31 16:46:29,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 16:46:29,289 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 16:46:29,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 16:46:30,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 16:46:30,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 16:46:30,300 INFO L134 CoverageAnalysis]: Checked inductivity of 3404 backedges. 0 proven. 3404 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 16:46:30,301 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 16:46:30,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170327160] [2022-01-31 16:46:30,301 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1170327160] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 16:46:30,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [645165472] [2022-01-31 16:46:30,301 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-31 16:46:30,301 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 16:46:30,302 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 16:46:30,317 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 16:46:30,318 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 16:46:30,792 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 38 check-sat command(s) [2022-01-31 16:46:30,792 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 16:46:30,801 INFO L263 TraceCheckSpWp]: Trace formula consists of 2418 conjuncts, 48 conjunts are in the unsatisfiable core [2022-01-31 16:46:30,811 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 16:46:31,266 INFO L134 CoverageAnalysis]: Checked inductivity of 3404 backedges. 0 proven. 3404 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 16:46:31,267 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 16:46:33,455 INFO L134 CoverageAnalysis]: Checked inductivity of 3404 backedges. 0 proven. 3404 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 16:46:33,456 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [645165472] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 16:46:33,456 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 16:46:33,456 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 49, 49] total 98 [2022-01-31 16:46:33,456 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757180673] [2022-01-31 16:46:33,457 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 16:46:33,458 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 98 states [2022-01-31 16:46:33,458 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 16:46:33,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2022-01-31 16:46:33,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4658, Invalid=4848, Unknown=0, NotChecked=0, Total=9506 [2022-01-31 16:46:33,462 INFO L87 Difference]: Start difference. First operand 273 states and 348 transitions. Second operand has 98 states, 98 states have (on average 4.704081632653061) internal successors, (461), 97 states have internal predecessors, (461), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 16:46:34,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 16:46:34,339 INFO L93 Difference]: Finished difference Result 561 states and 732 transitions. [2022-01-31 16:46:34,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2022-01-31 16:46:34,340 INFO L78 Accepts]: Start accepts. Automaton has has 98 states, 98 states have (on average 4.704081632653061) internal successors, (461), 97 states have internal predecessors, (461), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 234 [2022-01-31 16:46:34,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 16:46:34,344 INFO L225 Difference]: With dead ends: 561 [2022-01-31 16:46:34,344 INFO L226 Difference]: Without dead ends: 561 [2022-01-31 16:46:34,346 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 518 GetRequests, 422 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=4658, Invalid=4848, Unknown=0, NotChecked=0, Total=9506 [2022-01-31 16:46:34,346 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 1974 mSDsluCounter, 615 mSDsCounter, 0 mSdLazyCounter, 300 mSolverCounterSat, 154 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1974 SdHoareTripleChecker+Valid, 653 SdHoareTripleChecker+Invalid, 454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 154 IncrementalHoareTripleChecker+Valid, 300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-31 16:46:34,347 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1974 Valid, 653 Invalid, 454 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [154 Valid, 300 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-31 16:46:34,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 561 states. [2022-01-31 16:46:34,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 561 to 561. [2022-01-31 16:46:34,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 561 states, 557 states have (on average 1.3087971274685817) internal successors, (729), 557 states have internal predecessors, (729), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 16:46:34,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 732 transitions. [2022-01-31 16:46:34,388 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 732 transitions. Word has length 234 [2022-01-31 16:46:34,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 16:46:34,388 INFO L470 AbstractCegarLoop]: Abstraction has 561 states and 732 transitions. [2022-01-31 16:46:34,388 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 98 states, 98 states have (on average 4.704081632653061) internal successors, (461), 97 states have internal predecessors, (461), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 16:46:34,388 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 732 transitions. [2022-01-31 16:46:34,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 475 [2022-01-31 16:46:34,392 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 16:46:34,392 INFO L514 BasicCegarLoop]: trace histogram [86, 85, 85, 85, 85, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:46:34,412 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 16:46:34,593 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 16:46:34,593 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 16:46:34,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 16:46:34,593 INFO L85 PathProgramCache]: Analyzing trace with hash 882385865, now seen corresponding path program 4 times [2022-01-31 16:46:34,594 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 16:46:34,594 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582683668] [2022-01-31 16:46:34,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 16:46:34,594 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 16:46:34,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 16:46:37,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 16:46:37,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 16:46:37,054 INFO L134 CoverageAnalysis]: Checked inductivity of 18020 backedges. 0 proven. 18020 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 16:46:37,054 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 16:46:37,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582683668] [2022-01-31 16:46:37,054 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582683668] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 16:46:37,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019822461] [2022-01-31 16:46:37,054 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-31 16:46:37,055 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 16:46:37,055 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 16:46:37,068 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 16:46:37,092 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 16:46:37,699 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-31 16:46:37,699 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 16:46:37,715 INFO L263 TraceCheckSpWp]: Trace formula consists of 4434 conjuncts, 96 conjunts are in the unsatisfiable core [2022-01-31 16:46:37,724 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 16:46:38,445 INFO L134 CoverageAnalysis]: Checked inductivity of 18020 backedges. 0 proven. 18020 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 16:46:38,446 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 16:46:44,437 INFO L134 CoverageAnalysis]: Checked inductivity of 18020 backedges. 0 proven. 18020 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 16:46:44,437 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2019822461] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 16:46:44,438 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 16:46:44,438 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [98, 97, 97] total 194 [2022-01-31 16:46:44,438 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075259207] [2022-01-31 16:46:44,438 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 16:46:44,441 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 194 states [2022-01-31 16:46:44,441 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 16:46:44,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 194 interpolants. [2022-01-31 16:46:44,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18530, Invalid=18912, Unknown=0, NotChecked=0, Total=37442 [2022-01-31 16:46:44,452 INFO L87 Difference]: Start difference. First operand 561 states and 732 transitions. Second operand has 194 states, 194 states have (on average 4.850515463917525) internal successors, (941), 193 states have internal predecessors, (941), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 16:46:52,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 16:46:52,523 INFO L93 Difference]: Finished difference Result 1137 states and 1500 transitions. [2022-01-31 16:46:52,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 193 states. [2022-01-31 16:46:52,524 INFO L78 Accepts]: Start accepts. Automaton has has 194 states, 194 states have (on average 4.850515463917525) internal successors, (941), 193 states have internal predecessors, (941), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 474 [2022-01-31 16:46:52,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 16:46:52,527 INFO L225 Difference]: With dead ends: 1137 [2022-01-31 16:46:52,527 INFO L226 Difference]: Without dead ends: 1137 [2022-01-31 16:46:52,529 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1046 GetRequests, 854 SyntacticMatches, 0 SemanticMatches, 192 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 470 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=18530, Invalid=18912, Unknown=0, NotChecked=0, Total=37442 [2022-01-31 16:46:52,529 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 4372 mSDsluCounter, 1179 mSDsCounter, 0 mSdLazyCounter, 481 mSolverCounterSat, 245 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4372 SdHoareTripleChecker+Valid, 1217 SdHoareTripleChecker+Invalid, 726 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 245 IncrementalHoareTripleChecker+Valid, 481 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-31 16:46:52,530 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4372 Valid, 1217 Invalid, 726 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [245 Valid, 481 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-31 16:46:52,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1137 states. [2022-01-31 16:46:52,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1137 to 1137. [2022-01-31 16:46:52,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1137 states, 1133 states have (on average 1.321270962047661) internal successors, (1497), 1133 states have internal predecessors, (1497), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 16:46:52,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1137 states to 1137 states and 1500 transitions. [2022-01-31 16:46:52,542 INFO L78 Accepts]: Start accepts. Automaton has 1137 states and 1500 transitions. Word has length 474 [2022-01-31 16:46:52,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 16:46:52,543 INFO L470 AbstractCegarLoop]: Abstraction has 1137 states and 1500 transitions. [2022-01-31 16:46:52,543 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 194 states, 194 states have (on average 4.850515463917525) internal successors, (941), 193 states have internal predecessors, (941), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 16:46:52,543 INFO L276 IsEmpty]: Start isEmpty. Operand 1137 states and 1500 transitions. [2022-01-31 16:46:52,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 955 [2022-01-31 16:46:52,556 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 16:46:52,557 INFO L514 BasicCegarLoop]: trace histogram [182, 181, 181, 181, 181, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:46:52,579 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 16:46:52,779 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 16:46:52,779 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 16:46:52,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 16:46:52,780 INFO L85 PathProgramCache]: Analyzing trace with hash 1832186825, now seen corresponding path program 5 times [2022-01-31 16:46:52,780 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 16:46:52,780 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769652374] [2022-01-31 16:46:52,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 16:46:52,780 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 16:46:52,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 16:47:02,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 16:47:02,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 16:47:02,582 INFO L134 CoverageAnalysis]: Checked inductivity of 81812 backedges. 0 proven. 81812 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 16:47:02,586 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 16:47:02,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769652374] [2022-01-31 16:47:02,587 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769652374] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 16:47:02,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [622530785] [2022-01-31 16:47:02,587 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-31 16:47:02,587 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 16:47:02,587 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 16:47:02,588 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 16:47:02,637 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 16:47:05,397 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 182 check-sat command(s) [2022-01-31 16:47:05,398 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 16:47:05,444 INFO L263 TraceCheckSpWp]: Trace formula consists of 8466 conjuncts, 192 conjunts are in the unsatisfiable core [2022-01-31 16:47:05,470 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 16:47:07,139 INFO L134 CoverageAnalysis]: Checked inductivity of 81812 backedges. 0 proven. 81812 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 16:47:07,139 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 16:47:33,135 INFO L134 CoverageAnalysis]: Checked inductivity of 81812 backedges. 0 proven. 81812 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 16:47:33,135 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [622530785] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 16:47:33,135 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 16:47:33,135 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [194, 193, 193] total 386 [2022-01-31 16:47:33,136 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459468416] [2022-01-31 16:47:33,136 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 16:47:33,145 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 386 states [2022-01-31 16:47:33,145 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 16:47:33,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 386 interpolants. [2022-01-31 16:47:33,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73922, Invalid=74688, Unknown=0, NotChecked=0, Total=148610 [2022-01-31 16:47:33,175 INFO L87 Difference]: Start difference. First operand 1137 states and 1500 transitions. Second operand has 386 states, 386 states have (on average 4.924870466321243) internal successors, (1901), 385 states have internal predecessors, (1901), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 16:49:27,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 16:49:27,881 INFO L93 Difference]: Finished difference Result 2289 states and 3036 transitions. [2022-01-31 16:49:27,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 385 states. [2022-01-31 16:49:27,882 INFO L78 Accepts]: Start accepts. Automaton has has 386 states, 386 states have (on average 4.924870466321243) internal successors, (1901), 385 states have internal predecessors, (1901), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 954 [2022-01-31 16:49:27,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 16:49:27,888 INFO L225 Difference]: With dead ends: 2289 [2022-01-31 16:49:27,888 INFO L226 Difference]: Without dead ends: 2289 [2022-01-31 16:49:27,892 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2102 GetRequests, 1718 SyntacticMatches, 0 SemanticMatches, 384 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 950 ImplicationChecksByTransitivity, 33.2s TimeCoverageRelationStatistics Valid=73922, Invalid=74688, Unknown=0, NotChecked=0, Total=148610 [2022-01-31 16:49:27,893 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 9309 mSDsluCounter, 2375 mSDsCounter, 0 mSdLazyCounter, 873 mSolverCounterSat, 819 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9309 SdHoareTripleChecker+Valid, 2413 SdHoareTripleChecker+Invalid, 1692 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 819 IncrementalHoareTripleChecker+Valid, 873 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-31 16:49:27,893 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9309 Valid, 2413 Invalid, 1692 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [819 Valid, 873 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-01-31 16:49:27,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2289 states. [2022-01-31 16:49:27,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2289 to 2289. [2022-01-31 16:49:27,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2289 states, 2285 states have (on average 1.3273522975929979) internal successors, (3033), 2285 states have internal predecessors, (3033), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 16:49:27,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2289 states to 2289 states and 3036 transitions. [2022-01-31 16:49:27,918 INFO L78 Accepts]: Start accepts. Automaton has 2289 states and 3036 transitions. Word has length 954 [2022-01-31 16:49:27,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 16:49:27,919 INFO L470 AbstractCegarLoop]: Abstraction has 2289 states and 3036 transitions. [2022-01-31 16:49:27,920 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 386 states, 386 states have (on average 4.924870466321243) internal successors, (1901), 385 states have internal predecessors, (1901), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 16:49:27,920 INFO L276 IsEmpty]: Start isEmpty. Operand 2289 states and 3036 transitions. [2022-01-31 16:49:27,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1915 [2022-01-31 16:49:27,958 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 16:49:27,959 INFO L514 BasicCegarLoop]: trace histogram [374, 373, 373, 373, 373, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:49:27,989 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 16:49:28,187 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 16:49:28,188 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 16:49:28,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 16:49:28,188 INFO L85 PathProgramCache]: Analyzing trace with hash -131165239, now seen corresponding path program 6 times [2022-01-31 16:49:28,189 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 16:49:28,189 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240029346] [2022-01-31 16:49:28,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 16:49:28,189 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 16:49:28,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 16:50:00,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 16:50:00,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 16:50:00,509 INFO L134 CoverageAnalysis]: Checked inductivity of 347636 backedges. 0 proven. 347636 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 16:50:00,509 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 16:50:00,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240029346] [2022-01-31 16:50:00,509 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240029346] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 16:50:00,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [389433852] [2022-01-31 16:50:00,509 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-31 16:50:00,509 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 16:50:00,510 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 16:50:00,511 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 16:50:00,511 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 16:50:14,514 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 374 check-sat command(s) [2022-01-31 16:50:14,514 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 16:50:14,610 INFO L263 TraceCheckSpWp]: Trace formula consists of 16530 conjuncts, 384 conjunts are in the unsatisfiable core [2022-01-31 16:50:14,640 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 16:50:17,692 INFO L134 CoverageAnalysis]: Checked inductivity of 347636 backedges. 0 proven. 347636 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 16:50:17,693 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 16:51:57,707 INFO L134 CoverageAnalysis]: Checked inductivity of 347636 backedges. 0 proven. 347636 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 16:51:57,708 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [389433852] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 16:51:57,708 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 16:51:57,709 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [386, 385, 385] total 770 [2022-01-31 16:51:57,709 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655207869] [2022-01-31 16:51:57,709 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 16:51:57,716 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 770 states [2022-01-31 16:51:57,717 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 16:51:57,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 770 interpolants. [2022-01-31 16:51:57,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=295298, Invalid=296832, Unknown=0, NotChecked=0, Total=592130 [2022-01-31 16:51:57,773 INFO L87 Difference]: Start difference. First operand 2289 states and 3036 transitions. Second operand has 770 states, 770 states have (on average 4.962337662337663) internal successors, (3821), 769 states have internal predecessors, (3821), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)