/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_valuebound10.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-d966a43 [2022-01-31 14:44:35,722 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-31 14:44:35,724 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-31 14:44:35,784 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-31 14:44:35,785 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-31 14:44:35,787 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-31 14:44:35,789 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-31 14:44:35,793 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-31 14:44:35,795 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-31 14:44:35,798 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-31 14:44:35,799 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-31 14:44:35,800 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-31 14:44:35,800 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-31 14:44:35,802 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-31 14:44:35,803 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-31 14:44:35,805 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-31 14:44:35,806 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-31 14:44:35,806 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-31 14:44:35,808 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-31 14:44:35,812 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-31 14:44:35,813 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-31 14:44:35,814 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-31 14:44:35,819 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-31 14:44:35,820 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-31 14:44:35,825 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-31 14:44:35,828 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-31 14:44:35,828 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-31 14:44:35,829 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-31 14:44:35,830 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-31 14:44:35,831 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-31 14:44:35,831 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-31 14:44:35,831 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-31 14:44:35,831 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-31 14:44:35,831 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-31 14:44:35,832 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-31 14:44:35,832 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-31 14:44:35,833 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2022-01-31 14:44:35,842 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-31 14:44:35,842 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-31 14:44:35,843 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-31 14:44:35,843 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-31 14:44:35,843 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-31 14:44:35,843 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-31 14:44:35,843 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-31 14:44:35,843 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-31 14:44:35,844 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-31 14:44:35,844 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-31 14:44:35,844 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-31 14:44:35,844 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-31 14:44:35,844 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-31 14:44:35,845 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-31 14:44:35,845 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-31 14:44:35,845 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-31 14:44:35,845 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-31 14:44:35,845 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-31 14:44:35,845 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 14:44:35,845 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-31 14:44:35,845 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-31 14:44:35,846 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-31 14:44:35,846 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-31 14:44:36,028 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-31 14:44:36,044 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-31 14:44:36,046 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-31 14:44:36,047 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-31 14:44:36,050 INFO L275 PluginConnector]: CDTParser initialized [2022-01-31 14:44:36,051 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/geo1-ll_valuebound10.c [2022-01-31 14:44:36,104 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a7895491/893be965644c45e7a2bf1bfaaf8d7e4b/FLAG94b75b0ba [2022-01-31 14:44:36,469 INFO L306 CDTParser]: Found 1 translation units. [2022-01-31 14:44:36,469 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/geo1-ll_valuebound10.c [2022-01-31 14:44:36,477 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a7895491/893be965644c45e7a2bf1bfaaf8d7e4b/FLAG94b75b0ba [2022-01-31 14:44:36,491 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a7895491/893be965644c45e7a2bf1bfaaf8d7e4b [2022-01-31 14:44:36,493 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-31 14:44:36,494 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-31 14:44:36,498 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-31 14:44:36,498 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-31 14:44:36,500 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-31 14:44:36,501 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 02:44:36" (1/1) ... [2022-01-31 14:44:36,502 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37d1fdf7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 02:44:36, skipping insertion in model container [2022-01-31 14:44:36,502 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 02:44:36" (1/1) ... [2022-01-31 14:44:36,506 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-31 14:44:36,516 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-31 14:44:36,636 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_valuebound10.c[546,559] [2022-01-31 14:44:36,644 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 14:44:36,649 INFO L203 MainTranslator]: Completed pre-run [2022-01-31 14:44:36,661 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_valuebound10.c[546,559] [2022-01-31 14:44:36,665 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 14:44:36,673 INFO L208 MainTranslator]: Completed translation [2022-01-31 14:44:36,673 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 02:44:36 WrapperNode [2022-01-31 14:44:36,674 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-31 14:44:36,674 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-31 14:44:36,674 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-31 14:44:36,674 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-31 14:44:36,690 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 02:44:36" (1/1) ... [2022-01-31 14:44:36,690 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 02:44:36" (1/1) ... [2022-01-31 14:44:36,694 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 02:44:36" (1/1) ... [2022-01-31 14:44:36,694 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 02:44:36" (1/1) ... [2022-01-31 14:44:36,697 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 02:44:36" (1/1) ... [2022-01-31 14:44:36,700 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 02:44:36" (1/1) ... [2022-01-31 14:44:36,700 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 02:44:36" (1/1) ... [2022-01-31 14:44:36,701 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-31 14:44:36,702 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-31 14:44:36,702 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-31 14:44:36,702 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-31 14:44:36,704 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 02:44:36" (1/1) ... [2022-01-31 14:44:36,710 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 14:44:36,718 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 14:44:36,728 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 14:44:36,729 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 14:44:36,750 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-01-31 14:44:36,751 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-31 14:44:36,751 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-01-31 14:44:36,751 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-01-31 14:44:36,751 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-01-31 14:44:36,751 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-01-31 14:44:36,751 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-01-31 14:44:36,751 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-01-31 14:44:36,751 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-01-31 14:44:36,751 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-31 14:44:36,751 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-01-31 14:44:36,752 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-01-31 14:44:36,752 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-01-31 14:44:36,752 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-01-31 14:44:36,752 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-01-31 14:44:36,752 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-31 14:44:36,752 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-31 14:44:36,752 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-31 14:44:36,752 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-31 14:44:36,752 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-31 14:44:36,793 INFO L234 CfgBuilder]: Building ICFG [2022-01-31 14:44:36,794 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-31 14:44:36,915 INFO L275 CfgBuilder]: Performing block encoding [2022-01-31 14:44:36,919 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-31 14:44:36,919 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-31 14:44:36,921 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 02:44:36 BoogieIcfgContainer [2022-01-31 14:44:36,921 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-31 14:44:36,921 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-31 14:44:36,921 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-31 14:44:36,923 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-31 14:44:36,926 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 02:44:36" (1/1) ... [2022-01-31 14:44:36,939 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 31.01 02:44:36 BasicIcfg [2022-01-31 14:44:36,939 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-31 14:44:36,941 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-31 14:44:36,941 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-31 14:44:36,947 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-31 14:44:36,953 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 02:44:36" (1/4) ... [2022-01-31 14:44:36,954 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cdb421a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 02:44:36, skipping insertion in model container [2022-01-31 14:44:36,954 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 02:44:36" (2/4) ... [2022-01-31 14:44:36,954 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cdb421a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 02:44:36, skipping insertion in model container [2022-01-31 14:44:36,954 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 02:44:36" (3/4) ... [2022-01-31 14:44:36,955 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cdb421a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.01 02:44:36, skipping insertion in model container [2022-01-31 14:44:36,955 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 31.01 02:44:36" (4/4) ... [2022-01-31 14:44:36,955 INFO L111 eAbstractionObserver]: Analyzing ICFG geo1-ll_valuebound10.cJordan [2022-01-31 14:44:36,959 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2022-01-31 14:44:36,959 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-31 14:44:36,996 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-31 14:44:37,001 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 14:44:37,002 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-31 14:44:37,017 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 19 states have internal predecessors, (24), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-01-31 14:44:37,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-01-31 14:44:37,033 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 14:44:37,033 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 14:44:37,034 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 14:44:37,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 14:44:37,041 INFO L85 PathProgramCache]: Analyzing trace with hash 1950279688, now seen corresponding path program 1 times [2022-01-31 14:44:37,047 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 14:44:37,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206985599] [2022-01-31 14:44:37,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 14:44:37,049 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 14:44:37,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 14:44:37,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 14:44:37,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 14:44:37,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 14:44:37,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 14:44:37,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 14:44:37,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 14:44:37,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-31 14:44:37,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 14:44:37,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-01-31 14:44:37,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 14:44:37,230 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-01-31 14:44:37,231 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 14:44:37,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206985599] [2022-01-31 14:44:37,232 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206985599] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 14:44:37,232 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 14:44:37,232 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-31 14:44:37,233 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270846458] [2022-01-31 14:44:37,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 14:44:37,236 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-31 14:44:37,237 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 14:44:37,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-31 14:44:37,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-31 14:44:37,257 INFO L87 Difference]: Start difference. First operand has 32 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 19 states have internal predecessors, (24), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) 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, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-31 14:44:37,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 14:44:37,319 INFO L93 Difference]: Finished difference Result 32 states and 36 transitions. [2022-01-31 14:44:37,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-31 14:44:37,322 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, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 33 [2022-01-31 14:44:37,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 14:44:37,326 INFO L225 Difference]: With dead ends: 32 [2022-01-31 14:44:37,326 INFO L226 Difference]: Without dead ends: 27 [2022-01-31 14:44:37,327 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-31 14:44:37,330 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 17 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 14:44:37,330 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 33 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 14:44:37,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-01-31 14:44:37,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2022-01-31 14:44:37,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 16 states have internal predecessors, (17), 8 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-01-31 14:44:37,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2022-01-31 14:44:37,360 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 33 [2022-01-31 14:44:37,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 14:44:37,360 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2022-01-31 14:44:37,361 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, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-31 14:44:37,361 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2022-01-31 14:44:37,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-01-31 14:44:37,362 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 14:44:37,362 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 14:44:37,363 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-31 14:44:37,363 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 14:44:37,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 14:44:37,366 INFO L85 PathProgramCache]: Analyzing trace with hash 1010552682, now seen corresponding path program 1 times [2022-01-31 14:44:37,366 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 14:44:37,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124314617] [2022-01-31 14:44:37,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 14:44:37,368 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 14:44:37,399 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 14:44:37,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [188832774] [2022-01-31 14:44:37,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 14:44:37,400 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 14:44:37,400 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 14:44:37,402 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 14:44:37,403 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 14:44:37,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 14:44:37,449 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-31 14:44:37,453 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 14:44:37,601 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-01-31 14:44:37,601 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-31 14:44:37,602 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 14:44:37,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124314617] [2022-01-31 14:44:37,603 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 14:44:37,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [188832774] [2022-01-31 14:44:37,606 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [188832774] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 14:44:37,606 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 14:44:37,606 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-31 14:44:37,607 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390564421] [2022-01-31 14:44:37,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 14:44:37,609 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-31 14:44:37,609 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 14:44:37,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-31 14:44:37,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-31 14:44:37,611 INFO L87 Difference]: Start difference. First operand 27 states and 31 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, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-01-31 14:44:37,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 14:44:37,649 INFO L93 Difference]: Finished difference Result 35 states and 40 transitions. [2022-01-31 14:44:37,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-31 14:44:37,651 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, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 33 [2022-01-31 14:44:37,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 14:44:37,652 INFO L225 Difference]: With dead ends: 35 [2022-01-31 14:44:37,652 INFO L226 Difference]: Without dead ends: 35 [2022-01-31 14:44:37,652 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-31 14:44:37,653 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 6 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 104 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 [2022-01-31 14:44:37,653 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 104 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 14:44:37,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-01-31 14:44:37,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 33. [2022-01-31 14:44:37,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 19 states have (on average 1.105263157894737) internal successors, (21), 21 states have internal predecessors, (21), 9 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2022-01-31 14:44:37,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2022-01-31 14:44:37,658 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 33 [2022-01-31 14:44:37,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 14:44:37,659 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2022-01-31 14:44:37,659 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, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-01-31 14:44:37,660 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2022-01-31 14:44:37,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-01-31 14:44:37,660 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 14:44:37,660 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 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] [2022-01-31 14:44:37,681 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-01-31 14:44:37,879 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 14:44:37,881 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 14:44:37,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 14:44:37,882 INFO L85 PathProgramCache]: Analyzing trace with hash 1070211269, now seen corresponding path program 1 times [2022-01-31 14:44:37,882 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 14:44:37,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885140073] [2022-01-31 14:44:37,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 14:44:37,882 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 14:44:37,913 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 14:44:37,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2084822476] [2022-01-31 14:44:37,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 14:44:37,913 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 14:44:37,913 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 14:44:37,916 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 14:44:37,919 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 14:44:37,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 14:44:37,967 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-31 14:44:37,969 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 14:44:38,160 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-01-31 14:44:38,160 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 14:44:38,273 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-01-31 14:44:38,273 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 14:44:38,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885140073] [2022-01-31 14:44:38,274 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 14:44:38,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2084822476] [2022-01-31 14:44:38,274 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2084822476] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 14:44:38,274 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-31 14:44:38,274 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10 [2022-01-31 14:44:38,274 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295702104] [2022-01-31 14:44:38,274 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-31 14:44:38,275 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-31 14:44:38,275 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 14:44:38,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-31 14:44:38,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-01-31 14:44:38,276 INFO L87 Difference]: Start difference. First operand 33 states and 37 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, (9), 2 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-01-31 14:44:38,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 14:44:38,407 INFO L93 Difference]: Finished difference Result 31 states and 35 transitions. [2022-01-31 14:44:38,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-31 14:44:38,408 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, (9), 2 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) Word has length 40 [2022-01-31 14:44:38,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 14:44:38,408 INFO L225 Difference]: With dead ends: 31 [2022-01-31 14:44:38,408 INFO L226 Difference]: Without dead ends: 0 [2022-01-31 14:44:38,408 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 69 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-01-31 14:44:38,409 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 8 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 152 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 [2022-01-31 14:44:38,409 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 152 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 14:44:38,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-01-31 14:44:38,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-01-31 14:44:38,410 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) [2022-01-31 14:44:38,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-01-31 14:44:38,410 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 40 [2022-01-31 14:44:38,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 14:44:38,410 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-01-31 14:44:38,410 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, (9), 2 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-01-31 14:44:38,411 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-01-31 14:44:38,411 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-01-31 14:44:38,412 INFO L764 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-01-31 14:44:38,434 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 14:44:38,615 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-01-31 14:44:38,618 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-01-31 14:44:38,619 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-01-31 14:44:38,621 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.01 02:44:38 BasicIcfg [2022-01-31 14:44:38,621 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-31 14:44:38,621 INFO L158 Benchmark]: Toolchain (without parser) took 2127.15ms. Allocated memory was 184.5MB in the beginning and 235.9MB in the end (delta: 51.4MB). Free memory was 129.7MB in the beginning and 119.4MB in the end (delta: 10.3MB). Peak memory consumption was 60.9MB. Max. memory is 8.0GB. [2022-01-31 14:44:38,621 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 184.5MB. Free memory is still 145.7MB. There was no memory consumed. Max. memory is 8.0GB. [2022-01-31 14:44:38,622 INFO L158 Benchmark]: CACSL2BoogieTranslator took 175.95ms. Allocated memory was 184.5MB in the beginning and 235.9MB in the end (delta: 51.4MB). Free memory was 129.5MB in the beginning and 210.1MB in the end (delta: -80.6MB). Peak memory consumption was 13.1MB. Max. memory is 8.0GB. [2022-01-31 14:44:38,622 INFO L158 Benchmark]: Boogie Preprocessor took 27.34ms. Allocated memory is still 235.9MB. Free memory was 210.1MB in the beginning and 208.5MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-01-31 14:44:38,622 INFO L158 Benchmark]: RCFGBuilder took 218.81ms. Allocated memory is still 235.9MB. Free memory was 208.5MB in the beginning and 198.1MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-01-31 14:44:38,622 INFO L158 Benchmark]: IcfgTransformer took 18.19ms. Allocated memory is still 235.9MB. Free memory was 198.1MB in the beginning and 196.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-01-31 14:44:38,622 INFO L158 Benchmark]: TraceAbstraction took 1680.21ms. Allocated memory is still 235.9MB. Free memory was 196.0MB in the beginning and 119.4MB in the end (delta: 76.5MB). Peak memory consumption was 76.5MB. Max. memory is 8.0GB. [2022-01-31 14:44:38,623 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 184.5MB. Free memory is still 145.7MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 175.95ms. Allocated memory was 184.5MB in the beginning and 235.9MB in the end (delta: 51.4MB). Free memory was 129.5MB in the beginning and 210.1MB in the end (delta: -80.6MB). Peak memory consumption was 13.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 27.34ms. Allocated memory is still 235.9MB. Free memory was 210.1MB in the beginning and 208.5MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 218.81ms. Allocated memory is still 235.9MB. Free memory was 208.5MB in the beginning and 198.1MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * IcfgTransformer took 18.19ms. Allocated memory is still 235.9MB. Free memory was 198.1MB in the beginning and 196.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * TraceAbstraction took 1680.21ms. Allocated memory is still 235.9MB. Free memory was 196.0MB in the beginning and 119.4MB in the end (delta: 76.5MB). Peak memory consumption was 76.5MB. 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, 32 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.6s, OverallIterations: 3, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 38 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 31 mSDsluCounter, 289 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 208 mSDsCounter, 12 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 59 IncrementalHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 12 mSolverCounterUnsat, 81 mSDtfsCounter, 59 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 130 GetRequests, 113 SyntacticMatches, 3 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred in iteration=2, InterpolantAutomatonStates: 14, 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, 3 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 106 NumberOfCodeBlocks, 106 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 142 ConstructedInterpolants, 1 QuantifiedInterpolants, 246 SizeOfPredicates, 4 NumberOfNonLiveVariables, 210 ConjunctsInSsa, 17 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 98/100 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! [2022-01-31 14:44:38,634 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...