/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/nla-digbench-scaling/geo1-ll_unwindbound20.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-6c470ae [2022-02-14 23:05:44,513 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-14 23:05:44,514 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-14 23:05:44,566 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-02-14 23:05:44,567 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-02-14 23:05:44,568 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-02-14 23:05:44,569 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-02-14 23:05:44,570 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-02-14 23:05:44,572 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-02-14 23:05:44,572 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-02-14 23:05:44,573 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-02-14 23:05:44,574 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-02-14 23:05:44,574 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-14 23:05:44,579 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-14 23:05:44,580 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-14 23:05:44,581 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-14 23:05:44,582 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-14 23:05:44,583 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-14 23:05:44,586 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-14 23:05:44,591 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-14 23:05:44,592 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-14 23:05:44,593 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-14 23:05:44,595 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-14 23:05:44,595 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-14 23:05:44,602 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-02-14 23:05:44,605 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-02-14 23:05:44,606 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-02-14 23:05:44,607 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-02-14 23:05:44,608 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-02-14 23:05:44,609 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-02-14 23:05:44,609 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-02-14 23:05:44,610 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-02-14 23:05:44,610 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-02-14 23:05:44,610 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-14 23:05:44,611 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-14 23:05:44,612 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-14 23:05:44,613 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2022-02-14 23:05:44,624 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-14 23:05:44,624 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-14 23:05:44,626 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-14 23:05:44,626 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-14 23:05:44,626 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-14 23:05:44,626 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-14 23:05:44,626 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-14 23:05:44,626 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-14 23:05:44,626 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-14 23:05:44,627 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-14 23:05:44,627 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-14 23:05:44,627 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-14 23:05:44,627 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-14 23:05:44,628 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-14 23:05:44,628 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-14 23:05:44,628 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-14 23:05:44,628 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-14 23:05:44,628 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-14 23:05:44,628 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-14 23:05:44,628 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-14 23:05:44,629 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-14 23:05:44,629 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-02-14 23:05:44,629 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-02-14 23:05:44,847 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-14 23:05:44,869 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-14 23:05:44,871 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-14 23:05:44,872 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-14 23:05:44,875 INFO L275 PluginConnector]: CDTParser initialized [2022-02-14 23:05:44,876 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/geo1-ll_unwindbound20.c [2022-02-14 23:05:44,927 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8f9377341/7203e552112242e1b9662f6e1677f9ba/FLAG01c15869c [2022-02-14 23:05:45,303 INFO L306 CDTParser]: Found 1 translation units. [2022-02-14 23:05:45,304 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/geo1-ll_unwindbound20.c [2022-02-14 23:05:45,310 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8f9377341/7203e552112242e1b9662f6e1677f9ba/FLAG01c15869c [2022-02-14 23:05:45,322 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8f9377341/7203e552112242e1b9662f6e1677f9ba [2022-02-14 23:05:45,327 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-14 23:05:45,328 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-02-14 23:05:45,331 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-14 23:05:45,331 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-14 23:05:45,333 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-14 23:05:45,334 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.02 11:05:45" (1/1) ... [2022-02-14 23:05:45,335 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7eff1781 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 11:05:45, skipping insertion in model container [2022-02-14 23:05:45,335 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.02 11:05:45" (1/1) ... [2022-02-14 23:05:45,340 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-14 23:05:45,356 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-14 23:05:45,466 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/geo1-ll_unwindbound20.c[546,559] [2022-02-14 23:05:45,478 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-14 23:05:45,492 INFO L203 MainTranslator]: Completed pre-run [2022-02-14 23:05:45,503 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/geo1-ll_unwindbound20.c[546,559] [2022-02-14 23:05:45,512 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-14 23:05:45,523 INFO L208 MainTranslator]: Completed translation [2022-02-14 23:05:45,523 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 11:05:45 WrapperNode [2022-02-14 23:05:45,524 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-14 23:05:45,524 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-14 23:05:45,524 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-14 23:05:45,525 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-14 23:05:45,535 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 11:05:45" (1/1) ... [2022-02-14 23:05:45,535 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 11:05:45" (1/1) ... [2022-02-14 23:05:45,542 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 11:05:45" (1/1) ... [2022-02-14 23:05:45,543 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 11:05:45" (1/1) ... [2022-02-14 23:05:45,547 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 11:05:45" (1/1) ... [2022-02-14 23:05:45,550 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 11:05:45" (1/1) ... [2022-02-14 23:05:45,550 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 11:05:45" (1/1) ... [2022-02-14 23:05:45,552 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-14 23:05:45,553 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-14 23:05:45,553 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-14 23:05:45,553 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-14 23:05:45,553 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 11:05:45" (1/1) ... [2022-02-14 23:05:45,565 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-14 23:05:45,573 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-14 23:05:45,592 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) [2022-02-14 23:05:45,606 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 [2022-02-14 23:05:45,625 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-02-14 23:05:45,625 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-14 23:05:45,625 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-02-14 23:05:45,625 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-02-14 23:05:45,625 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-02-14 23:05:45,625 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-02-14 23:05:45,625 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-02-14 23:05:45,626 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-02-14 23:05:45,626 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-02-14 23:05:45,626 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-14 23:05:45,626 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-02-14 23:05:45,626 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-02-14 23:05:45,626 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-02-14 23:05:45,626 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-02-14 23:05:45,626 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-02-14 23:05:45,626 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-14 23:05:45,627 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-14 23:05:45,627 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-02-14 23:05:45,627 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-02-14 23:05:45,627 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-02-14 23:05:45,686 INFO L234 CfgBuilder]: Building ICFG [2022-02-14 23:05:45,688 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-14 23:05:45,794 INFO L275 CfgBuilder]: Performing block encoding [2022-02-14 23:05:45,799 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-14 23:05:45,799 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-02-14 23:05:45,801 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.02 11:05:45 BoogieIcfgContainer [2022-02-14 23:05:45,801 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-14 23:05:45,802 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-02-14 23:05:45,802 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-02-14 23:05:45,804 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-02-14 23:05:45,806 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.02 11:05:45" (1/1) ... [2022-02-14 23:05:45,820 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 14.02 11:05:45 BasicIcfg [2022-02-14 23:05:45,820 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-02-14 23:05:45,821 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-14 23:05:45,821 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-14 23:05:45,823 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-14 23:05:45,823 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.02 11:05:45" (1/4) ... [2022-02-14 23:05:45,824 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b8927f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.02 11:05:45, skipping insertion in model container [2022-02-14 23:05:45,824 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 11:05:45" (2/4) ... [2022-02-14 23:05:45,824 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b8927f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.02 11:05:45, skipping insertion in model container [2022-02-14 23:05:45,825 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.02 11:05:45" (3/4) ... [2022-02-14 23:05:45,825 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b8927f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.02 11:05:45, skipping insertion in model container [2022-02-14 23:05:45,825 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 14.02 11:05:45" (4/4) ... [2022-02-14 23:05:45,826 INFO L111 eAbstractionObserver]: Analyzing ICFG geo1-ll_unwindbound20.cJordan [2022-02-14 23:05:45,830 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2022-02-14 23:05:45,830 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-14 23:05:45,865 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-14 23:05:45,885 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 [2022-02-14 23:05:45,886 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-02-14 23:05:45,904 INFO L276 IsEmpty]: Start isEmpty. Operand has 30 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 19 states have internal predecessors, (24), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-02-14 23:05:45,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-02-14 23:05:45,925 INFO L506 BasicCegarLoop]: Found error trace [2022-02-14 23:05:45,925 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-14 23:05:45,925 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-14 23:05:45,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-14 23:05:45,929 INFO L85 PathProgramCache]: Analyzing trace with hash -1175629711, now seen corresponding path program 1 times [2022-02-14 23:05:45,947 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-14 23:05:45,947 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083617679] [2022-02-14 23:05:45,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 23:05:45,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-14 23:05:46,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 23:05:46,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-14 23:05:46,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 23:05:46,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-14 23:05:46,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 23:05:46,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-02-14 23:05:46,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 23:05:46,163 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-02-14 23:05:46,164 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-14 23:05:46,164 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083617679] [2022-02-14 23:05:46,165 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083617679] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-14 23:05:46,165 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-14 23:05:46,165 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-02-14 23:05:46,167 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338532385] [2022-02-14 23:05:46,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-14 23:05:46,170 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-02-14 23:05:46,170 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-14 23:05:46,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-02-14 23:05:46,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-14 23:05:46,193 INFO L87 Difference]: Start difference. First operand has 30 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 19 states have internal predecessors, (24), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-02-14 23:05:46,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-14 23:05:46,253 INFO L93 Difference]: Finished difference Result 31 states and 34 transitions. [2022-02-14 23:05:46,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-14 23:05:46,255 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 23 [2022-02-14 23:05:46,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-14 23:05:46,260 INFO L225 Difference]: With dead ends: 31 [2022-02-14 23:05:46,261 INFO L226 Difference]: Without dead ends: 26 [2022-02-14 23:05:46,262 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-14 23:05:46,265 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 10 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-14 23:05:46,266 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 34 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-14 23:05:46,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-02-14 23:05:46,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2022-02-14 23:05:46,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 15 states have (on average 1.2) internal successors, (18), 16 states have internal predecessors, (18), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-02-14 23:05:46,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2022-02-14 23:05:46,294 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 23 [2022-02-14 23:05:46,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-14 23:05:46,294 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2022-02-14 23:05:46,295 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-02-14 23:05:46,295 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2022-02-14 23:05:46,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-02-14 23:05:46,296 INFO L506 BasicCegarLoop]: Found error trace [2022-02-14 23:05:46,296 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-14 23:05:46,296 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-14 23:05:46,297 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-14 23:05:46,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-14 23:05:46,297 INFO L85 PathProgramCache]: Analyzing trace with hash 165914577, now seen corresponding path program 1 times [2022-02-14 23:05:46,297 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-14 23:05:46,298 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934804737] [2022-02-14 23:05:46,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 23:05:46,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-14 23:05:46,318 ERROR L252 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-02-14 23:05:46,318 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [784675935] [2022-02-14 23:05:46,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 23:05:46,318 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-14 23:05:46,319 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-14 23:05:46,320 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) [2022-02-14 23:05:46,321 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-02-14 23:05:46,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 23:05:46,377 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 7 conjunts are in the unsatisfiable core [2022-02-14 23:05:46,382 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-14 23:05:46,478 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-02-14 23:05:46,478 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-02-14 23:05:46,479 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-14 23:05:46,479 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934804737] [2022-02-14 23:05:46,479 WARN L317 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-02-14 23:05:46,479 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [784675935] [2022-02-14 23:05:46,479 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [784675935] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-14 23:05:46,480 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-14 23:05:46,480 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-14 23:05:46,480 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445091075] [2022-02-14 23:05:46,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-14 23:05:46,481 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-14 23:05:46,481 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-14 23:05:46,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-14 23:05:46,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-02-14 23:05:46,482 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-02-14 23:05:46,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-14 23:05:46,511 INFO L93 Difference]: Finished difference Result 34 states and 39 transitions. [2022-02-14 23:05:46,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-14 23:05:46,512 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 23 [2022-02-14 23:05:46,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-14 23:05:46,513 INFO L225 Difference]: With dead ends: 34 [2022-02-14 23:05:46,513 INFO L226 Difference]: Without dead ends: 34 [2022-02-14 23:05:46,513 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-02-14 23:05:46,514 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 7 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-14 23:05:46,515 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 92 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-14 23:05:46,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-02-14 23:05:46,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32. [2022-02-14 23:05:46,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 20 states have (on average 1.2) internal successors, (24), 22 states have internal predecessors, (24), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2022-02-14 23:05:46,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2022-02-14 23:05:46,521 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 23 [2022-02-14 23:05:46,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-14 23:05:46,522 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2022-02-14 23:05:46,522 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-02-14 23:05:46,522 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2022-02-14 23:05:46,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-02-14 23:05:46,523 INFO L506 BasicCegarLoop]: Found error trace [2022-02-14 23:05:46,523 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-14 23:05:46,542 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-02-14 23:05:46,735 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 [2022-02-14 23:05:46,736 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-14 23:05:46,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-14 23:05:46,736 INFO L85 PathProgramCache]: Analyzing trace with hash 815968169, now seen corresponding path program 1 times [2022-02-14 23:05:46,737 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-14 23:05:46,737 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341931884] [2022-02-14 23:05:46,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 23:05:46,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-14 23:05:46,760 ERROR L252 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-02-14 23:05:46,760 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2092284377] [2022-02-14 23:05:46,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 23:05:46,761 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-14 23:05:46,761 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-14 23:05:46,765 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) [2022-02-14 23:05:46,768 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-02-14 23:05:46,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 23:05:46,812 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 5 conjunts are in the unsatisfiable core [2022-02-14 23:05:46,820 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-14 23:05:46,916 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-02-14 23:05:46,916 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-02-14 23:05:46,917 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-14 23:05:46,917 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341931884] [2022-02-14 23:05:46,917 WARN L317 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-02-14 23:05:46,917 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2092284377] [2022-02-14 23:05:46,917 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2092284377] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-14 23:05:46,917 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-14 23:05:46,917 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-14 23:05:46,918 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666188849] [2022-02-14 23:05:46,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-14 23:05:46,918 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-14 23:05:46,918 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-14 23:05:46,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-14 23:05:46,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-14 23:05:46,919 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-02-14 23:05:46,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-14 23:05:46,934 INFO L93 Difference]: Finished difference Result 32 states and 35 transitions. [2022-02-14 23:05:46,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-14 23:05:46,936 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 24 [2022-02-14 23:05:46,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-14 23:05:46,938 INFO L225 Difference]: With dead ends: 32 [2022-02-14 23:05:46,938 INFO L226 Difference]: Without dead ends: 32 [2022-02-14 23:05:46,939 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-14 23:05:46,940 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 0 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-14 23:05:46,940 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 64 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-14 23:05:46,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-02-14 23:05:46,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2022-02-14 23:05:46,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 20 states have (on average 1.15) internal successors, (23), 22 states have internal predecessors, (23), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2022-02-14 23:05:46,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2022-02-14 23:05:46,945 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 24 [2022-02-14 23:05:46,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-14 23:05:46,945 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2022-02-14 23:05:46,945 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-02-14 23:05:46,945 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2022-02-14 23:05:46,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-02-14 23:05:46,946 INFO L506 BasicCegarLoop]: Found error trace [2022-02-14 23:05:46,946 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-14 23:05:46,971 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-02-14 23:05:47,147 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 [2022-02-14 23:05:47,147 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-14 23:05:47,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-14 23:05:47,148 INFO L85 PathProgramCache]: Analyzing trace with hash -974402257, now seen corresponding path program 1 times [2022-02-14 23:05:47,148 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-14 23:05:47,149 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303799392] [2022-02-14 23:05:47,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 23:05:47,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-14 23:05:47,164 ERROR L252 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-02-14 23:05:47,165 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [700893269] [2022-02-14 23:05:47,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 23:05:47,165 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-14 23:05:47,165 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-14 23:05:47,169 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) [2022-02-14 23:05:47,184 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-02-14 23:05:47,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 23:05:47,218 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-14 23:05:47,220 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-14 23:05:47,445 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-02-14 23:05:47,445 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-14 23:05:47,583 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-02-14 23:05:47,584 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-14 23:05:47,584 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303799392] [2022-02-14 23:05:47,584 WARN L317 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-02-14 23:05:47,584 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [700893269] [2022-02-14 23:05:47,584 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [700893269] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-14 23:05:47,584 INFO L191 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-02-14 23:05:47,584 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10 [2022-02-14 23:05:47,585 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992025420] [2022-02-14 23:05:47,585 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-02-14 23:05:47,585 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-14 23:05:47,585 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-14 23:05:47,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-14 23:05:47,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-02-14 23:05:47,586 INFO L87 Difference]: Start difference. First operand 32 states and 35 transitions. Second operand has 10 states, 8 states have (on average 2.5) internal successors, (20), 9 states have internal predecessors, (20), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-02-14 23:05:47,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-14 23:05:47,727 INFO L93 Difference]: Finished difference Result 30 states and 33 transitions. [2022-02-14 23:05:47,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-14 23:05:47,728 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 2.5) internal successors, (20), 9 states have internal predecessors, (20), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 30 [2022-02-14 23:05:47,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-14 23:05:47,729 INFO L225 Difference]: With dead ends: 30 [2022-02-14 23:05:47,729 INFO L226 Difference]: Without dead ends: 0 [2022-02-14 23:05:47,729 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 49 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-02-14 23:05:47,730 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 10 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-14 23:05:47,731 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 129 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-14 23:05:47,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-02-14 23:05:47,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-02-14 23:05:47,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-14 23:05:47,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-02-14 23:05:47,732 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 30 [2022-02-14 23:05:47,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-14 23:05:47,732 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-02-14 23:05:47,732 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 2.5) internal successors, (20), 9 states have internal predecessors, (20), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-02-14 23:05:47,732 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-02-14 23:05:47,733 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-02-14 23:05:47,735 INFO L764 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-02-14 23:05:47,759 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-02-14 23:05:47,945 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 [2022-02-14 23:05:47,948 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-02-14 23:05:47,949 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-02-14 23:05:47,951 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.02 11:05:47 BasicIcfg [2022-02-14 23:05:47,951 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-02-14 23:05:47,952 INFO L158 Benchmark]: Toolchain (without parser) took 2623.75ms. Allocated memory is still 174.1MB. Free memory was 128.3MB in the beginning and 137.0MB in the end (delta: -8.7MB). There was no memory consumed. Max. memory is 8.0GB. [2022-02-14 23:05:47,952 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 174.1MB. Free memory is still 144.7MB. There was no memory consumed. Max. memory is 8.0GB. [2022-02-14 23:05:47,952 INFO L158 Benchmark]: CACSL2BoogieTranslator took 193.07ms. Allocated memory is still 174.1MB. Free memory was 128.1MB in the beginning and 154.6MB in the end (delta: -26.5MB). Peak memory consumption was 11.1MB. Max. memory is 8.0GB. [2022-02-14 23:05:47,953 INFO L158 Benchmark]: Boogie Preprocessor took 27.62ms. Allocated memory is still 174.1MB. Free memory was 154.6MB in the beginning and 153.1MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-02-14 23:05:47,953 INFO L158 Benchmark]: RCFGBuilder took 248.46ms. Allocated memory is still 174.1MB. Free memory was 153.1MB in the beginning and 142.6MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-02-14 23:05:47,953 INFO L158 Benchmark]: IcfgTransformer took 18.40ms. Allocated memory is still 174.1MB. Free memory was 142.6MB in the beginning and 141.5MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-02-14 23:05:47,954 INFO L158 Benchmark]: TraceAbstraction took 2130.38ms. Allocated memory is still 174.1MB. Free memory was 141.0MB in the beginning and 137.0MB in the end (delta: 4.0MB). Peak memory consumption was 4.0MB. Max. memory is 8.0GB. [2022-02-14 23:05:47,955 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 174.1MB. Free memory is still 144.7MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 193.07ms. Allocated memory is still 174.1MB. Free memory was 128.1MB in the beginning and 154.6MB in the end (delta: -26.5MB). Peak memory consumption was 11.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 27.62ms. Allocated memory is still 174.1MB. Free memory was 154.6MB in the beginning and 153.1MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 248.46ms. Allocated memory is still 174.1MB. Free memory was 153.1MB in the beginning and 142.6MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * IcfgTransformer took 18.40ms. Allocated memory is still 174.1MB. Free memory was 142.6MB in the beginning and 141.5MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * TraceAbstraction took 2130.38ms. Allocated memory is still 174.1MB. Free memory was 141.0MB in the beginning and 137.0MB in the end (delta: 4.0MB). Peak memory consumption was 4.0MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 30 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.1s, OverallIterations: 4, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 30 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 27 mSDsluCounter, 319 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 218 mSDsCounter, 10 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 72 IncrementalHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 10 mSolverCounterUnsat, 101 mSDtfsCounter, 72 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 117 GetRequests, 98 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred in iteration=2, InterpolantAutomatonStates: 18, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 3 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 100 NumberOfCodeBlocks, 100 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 125 ConstructedInterpolants, 1 QuantifiedInterpolants, 272 SizeOfPredicates, 5 NumberOfNonLiveVariables, 293 ConjunctsInSsa, 22 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 22/24 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-02-14 23:05:47,980 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...