/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/freire2_unwindbound5.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-6c470ae [2022-02-14 23:04:31,668 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-14 23:04:31,670 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-14 23:04:31,722 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-02-14 23:04:31,723 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-02-14 23:04:31,725 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-02-14 23:04:31,728 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-02-14 23:04:31,731 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-02-14 23:04:31,732 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-02-14 23:04:31,736 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-02-14 23:04:31,737 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-02-14 23:04:31,738 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-02-14 23:04:31,738 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-14 23:04:31,740 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-14 23:04:31,741 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-14 23:04:31,742 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-14 23:04:31,742 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-14 23:04:31,743 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-14 23:04:31,746 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-14 23:04:31,751 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-14 23:04:31,752 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-14 23:04:31,753 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-14 23:04:31,754 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-14 23:04:31,755 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-14 23:04:31,761 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-02-14 23:04:31,769 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-14 23:04:31,770 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-14 23:04:31,770 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-14 23:04:31,771 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2022-02-14 23:04:31,785 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-14 23:04:31,785 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-14 23:04:31,786 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-14 23:04:31,787 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-14 23:04:31,787 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-14 23:04:31,787 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-14 23:04:31,787 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-14 23:04:31,787 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-14 23:04:31,787 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-14 23:04:31,787 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-14 23:04:31,788 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-14 23:04:31,788 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-14 23:04:31,788 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-14 23:04:31,788 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-14 23:04:31,789 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-14 23:04:31,789 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-14 23:04:31,789 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-14 23:04:31,789 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-14 23:04:31,789 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-14 23:04:31,789 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-14 23:04:31,789 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-14 23:04:31,790 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-02-14 23:04:31,790 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-02-14 23:04:31,992 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-14 23:04:32,011 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-14 23:04:32,013 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-14 23:04:32,014 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-14 23:04:32,016 INFO L275 PluginConnector]: CDTParser initialized [2022-02-14 23:04:32,017 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/freire2_unwindbound5.c [2022-02-14 23:04:32,076 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/36db186b1/1fa6ea400e2b48a89ba962da50b193bf/FLAG9065c789b [2022-02-14 23:04:32,477 INFO L306 CDTParser]: Found 1 translation units. [2022-02-14 23:04:32,477 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/freire2_unwindbound5.c [2022-02-14 23:04:32,486 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/36db186b1/1fa6ea400e2b48a89ba962da50b193bf/FLAG9065c789b [2022-02-14 23:04:32,502 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/36db186b1/1fa6ea400e2b48a89ba962da50b193bf [2022-02-14 23:04:32,504 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-14 23:04:32,506 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-02-14 23:04:32,509 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-14 23:04:32,509 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-14 23:04:32,511 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-14 23:04:32,512 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.02 11:04:32" (1/1) ... [2022-02-14 23:04:32,514 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a9ed992 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 11:04:32, skipping insertion in model container [2022-02-14 23:04:32,514 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.02 11:04:32" (1/1) ... [2022-02-14 23:04:32,520 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-14 23:04:32,535 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-14 23:04:32,708 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/freire2_unwindbound5.c[709,722] [2022-02-14 23:04:32,724 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-14 23:04:32,730 INFO L203 MainTranslator]: Completed pre-run [2022-02-14 23:04:32,739 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/freire2_unwindbound5.c[709,722] [2022-02-14 23:04:32,747 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-14 23:04:32,756 INFO L208 MainTranslator]: Completed translation [2022-02-14 23:04:32,756 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 11:04:32 WrapperNode [2022-02-14 23:04:32,756 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-14 23:04:32,757 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-14 23:04:32,757 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-14 23:04:32,757 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-14 23:04:32,765 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 11:04:32" (1/1) ... [2022-02-14 23:04:32,765 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 11:04:32" (1/1) ... [2022-02-14 23:04:32,770 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 11:04:32" (1/1) ... [2022-02-14 23:04:32,770 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 11:04:32" (1/1) ... [2022-02-14 23:04:32,775 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 11:04:32" (1/1) ... [2022-02-14 23:04:32,778 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 11:04:32" (1/1) ... [2022-02-14 23:04:32,779 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 11:04:32" (1/1) ... [2022-02-14 23:04:32,780 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-14 23:04:32,781 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-14 23:04:32,781 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-14 23:04:32,781 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-14 23:04:32,782 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 11:04:32" (1/1) ... [2022-02-14 23:04:32,791 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-14 23:04:32,798 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-14 23:04:32,807 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 23:04:32,819 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 23:04:32,841 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-02-14 23:04:32,841 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-14 23:04:32,841 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-02-14 23:04:32,842 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-02-14 23:04:32,842 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-02-14 23:04:32,842 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-02-14 23:04:32,842 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-02-14 23:04:32,842 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-02-14 23:04:32,842 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-02-14 23:04:32,842 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-14 23:04:32,842 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2022-02-14 23:04:32,842 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-02-14 23:04:32,843 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-02-14 23:04:32,843 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-02-14 23:04:32,843 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-02-14 23:04:32,843 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-14 23:04:32,843 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-14 23:04:32,843 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-02-14 23:04:32,843 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-02-14 23:04:32,843 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-02-14 23:04:32,897 INFO L234 CfgBuilder]: Building ICFG [2022-02-14 23:04:32,898 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-14 23:04:33,058 INFO L275 CfgBuilder]: Performing block encoding [2022-02-14 23:04:33,063 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-14 23:04:33,063 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-02-14 23:04:33,067 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.02 11:04:33 BoogieIcfgContainer [2022-02-14 23:04:33,068 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-14 23:04:33,068 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-02-14 23:04:33,068 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-02-14 23:04:33,071 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-02-14 23:04:33,077 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.02 11:04:33" (1/1) ... [2022-02-14 23:04:33,093 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 14.02 11:04:33 BasicIcfg [2022-02-14 23:04:33,093 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-02-14 23:04:33,094 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-14 23:04:33,094 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-14 23:04:33,096 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-14 23:04:33,097 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.02 11:04:32" (1/4) ... [2022-02-14 23:04:33,097 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fbeed5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.02 11:04:33, skipping insertion in model container [2022-02-14 23:04:33,097 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 11:04:32" (2/4) ... [2022-02-14 23:04:33,098 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fbeed5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.02 11:04:33, skipping insertion in model container [2022-02-14 23:04:33,098 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.02 11:04:33" (3/4) ... [2022-02-14 23:04:33,098 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fbeed5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.02 11:04:33, skipping insertion in model container [2022-02-14 23:04:33,098 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 14.02 11:04:33" (4/4) ... [2022-02-14 23:04:33,099 INFO L111 eAbstractionObserver]: Analyzing ICFG freire2_unwindbound5.cJordan [2022-02-14 23:04:33,103 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2022-02-14 23:04:33,103 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-14 23:04:33,135 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-14 23:04:33,139 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 23:04:33,140 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-02-14 23:04:33,149 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 14 states have internal predecessors, (18), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-02-14 23:04:33,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-02-14 23:04:33,154 INFO L506 BasicCegarLoop]: Found error trace [2022-02-14 23:04:33,155 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-14 23:04:33,155 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-14 23:04:33,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-14 23:04:33,159 INFO L85 PathProgramCache]: Analyzing trace with hash 1238828824, now seen corresponding path program 1 times [2022-02-14 23:04:33,166 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-14 23:04:33,166 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123967999] [2022-02-14 23:04:33,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 23:04:33,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-14 23:04:33,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 23:04:33,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-14 23:04:33,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 23:04:33,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-14 23:04:33,346 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-14 23:04:33,347 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123967999] [2022-02-14 23:04:33,348 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123967999] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-14 23:04:33,348 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-14 23:04:33,348 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-02-14 23:04:33,350 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141742942] [2022-02-14 23:04:33,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-14 23:04:33,354 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-02-14 23:04:33,354 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-14 23:04:33,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-02-14 23:04:33,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-14 23:04:33,382 INFO L87 Difference]: Start difference. First operand has 26 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 14 states have internal predecessors, (18), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 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 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-14 23:04:33,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-14 23:04:33,464 INFO L93 Difference]: Finished difference Result 27 states and 33 transitions. [2022-02-14 23:04:33,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-14 23:04:33,468 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2022-02-14 23:04:33,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-14 23:04:33,473 INFO L225 Difference]: With dead ends: 27 [2022-02-14 23:04:33,474 INFO L226 Difference]: Without dead ends: 22 [2022-02-14 23:04:33,475 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 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 23:04:33,478 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 6 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-14 23:04:33,480 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 35 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-14 23:04:33,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-02-14 23:04:33,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 21. [2022-02-14 23:04:33,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 10 states have (on average 1.3) internal successors, (13), 11 states have internal predecessors, (13), 8 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-02-14 23:04:33,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 27 transitions. [2022-02-14 23:04:33,515 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 27 transitions. Word has length 11 [2022-02-14 23:04:33,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-14 23:04:33,516 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 27 transitions. [2022-02-14 23:04:33,516 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-14 23:04:33,516 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 27 transitions. [2022-02-14 23:04:33,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-02-14 23:04:33,517 INFO L506 BasicCegarLoop]: Found error trace [2022-02-14 23:04:33,518 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-14 23:04:33,518 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-14 23:04:33,519 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-14 23:04:33,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-14 23:04:33,521 INFO L85 PathProgramCache]: Analyzing trace with hash -221581531, now seen corresponding path program 1 times [2022-02-14 23:04:33,521 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-14 23:04:33,522 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439014184] [2022-02-14 23:04:33,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 23:04:33,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-14 23:04:33,560 ERROR L252 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-02-14 23:04:33,561 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [829008819] [2022-02-14 23:04:33,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 23:04:33,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-14 23:04:33,561 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-14 23:04:33,565 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 23:04:33,567 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 23:04:33,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 23:04:33,625 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 5 conjunts are in the unsatisfiable core [2022-02-14 23:04:33,629 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-14 23:04:33,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-14 23:04:33,709 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-02-14 23:04:33,709 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-14 23:04:33,709 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439014184] [2022-02-14 23:04:33,710 WARN L317 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-02-14 23:04:33,713 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [829008819] [2022-02-14 23:04:33,713 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [829008819] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-14 23:04:33,713 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-14 23:04:33,713 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-14 23:04:33,714 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015251732] [2022-02-14 23:04:33,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-14 23:04:33,715 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-14 23:04:33,716 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-14 23:04:33,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-14 23:04:33,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-14 23:04:33,717 INFO L87 Difference]: Start difference. First operand 21 states and 27 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-14 23:04:33,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-14 23:04:33,738 INFO L93 Difference]: Finished difference Result 23 states and 29 transitions. [2022-02-14 23:04:33,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-14 23:04:33,738 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2022-02-14 23:04:33,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-14 23:04:33,740 INFO L225 Difference]: With dead ends: 23 [2022-02-14 23:04:33,740 INFO L226 Difference]: Without dead ends: 23 [2022-02-14 23:04:33,740 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 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 23:04:33,742 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 0 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 69 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 23:04:33,743 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 69 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-14 23:04:33,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-02-14 23:04:33,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2022-02-14 23:04:33,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 12 states have (on average 1.25) internal successors, (15), 13 states have internal predecessors, (15), 8 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-02-14 23:04:33,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 29 transitions. [2022-02-14 23:04:33,758 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 29 transitions. Word has length 12 [2022-02-14 23:04:33,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-14 23:04:33,759 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 29 transitions. [2022-02-14 23:04:33,759 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-14 23:04:33,759 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 29 transitions. [2022-02-14 23:04:33,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-02-14 23:04:33,760 INFO L506 BasicCegarLoop]: Found error trace [2022-02-14 23:04:33,760 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-14 23:04:33,785 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-02-14 23:04:33,982 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 23:04:33,983 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-14 23:04:33,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-14 23:04:33,984 INFO L85 PathProgramCache]: Analyzing trace with hash -220509055, now seen corresponding path program 1 times [2022-02-14 23:04:33,984 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-14 23:04:33,984 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847383379] [2022-02-14 23:04:33,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 23:04:33,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-14 23:04:33,996 ERROR L252 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-02-14 23:04:33,997 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1080884189] [2022-02-14 23:04:33,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 23:04:33,997 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-14 23:04:33,997 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-14 23:04:34,002 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 23:04:34,015 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 23:04:34,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-14 23:04:34,047 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-02-14 23:04:34,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-14 23:04:34,071 INFO L138 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-02-14 23:04:34,072 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-02-14 23:04:34,073 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-02-14 23:04:34,094 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 23:04:34,287 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-02-14 23:04:34,290 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-02-14 23:04:34,291 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-02-14 23:04:34,318 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.02 11:04:34 BasicIcfg [2022-02-14 23:04:34,319 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-02-14 23:04:34,321 INFO L158 Benchmark]: Toolchain (without parser) took 1813.38ms. Allocated memory was 199.2MB in the beginning and 240.1MB in the end (delta: 40.9MB). Free memory was 149.4MB in the beginning and 217.6MB in the end (delta: -68.1MB). Peak memory consumption was 30.1MB. Max. memory is 8.0GB. [2022-02-14 23:04:34,323 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 199.2MB. Free memory is still 165.9MB. There was no memory consumed. Max. memory is 8.0GB. [2022-02-14 23:04:34,324 INFO L158 Benchmark]: CACSL2BoogieTranslator took 247.72ms. Allocated memory is still 199.2MB. Free memory was 149.3MB in the beginning and 174.9MB in the end (delta: -25.6MB). Peak memory consumption was 10.9MB. Max. memory is 8.0GB. [2022-02-14 23:04:34,324 INFO L158 Benchmark]: Boogie Preprocessor took 23.40ms. Allocated memory is still 199.2MB. Free memory was 174.9MB in the beginning and 173.1MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-02-14 23:04:34,325 INFO L158 Benchmark]: RCFGBuilder took 286.51ms. Allocated memory is still 199.2MB. Free memory was 173.1MB in the beginning and 163.0MB in the end (delta: 10.1MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-02-14 23:04:34,325 INFO L158 Benchmark]: IcfgTransformer took 24.96ms. Allocated memory is still 199.2MB. Free memory was 163.0MB in the beginning and 161.5MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-02-14 23:04:34,325 INFO L158 Benchmark]: TraceAbstraction took 1224.50ms. Allocated memory was 199.2MB in the beginning and 240.1MB in the end (delta: 40.9MB). Free memory was 161.3MB in the beginning and 217.6MB in the end (delta: -56.3MB). Peak memory consumption was 42.3MB. Max. memory is 8.0GB. [2022-02-14 23:04:34,327 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 199.2MB. Free memory is still 165.9MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 247.72ms. Allocated memory is still 199.2MB. Free memory was 149.3MB in the beginning and 174.9MB in the end (delta: -25.6MB). Peak memory consumption was 10.9MB. Max. memory is 8.0GB. * Boogie Preprocessor took 23.40ms. Allocated memory is still 199.2MB. Free memory was 174.9MB in the beginning and 173.1MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 286.51ms. Allocated memory is still 199.2MB. Free memory was 173.1MB in the beginning and 163.0MB in the end (delta: 10.1MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * IcfgTransformer took 24.96ms. Allocated memory is still 199.2MB. Free memory was 163.0MB in the beginning and 161.5MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * TraceAbstraction took 1224.50ms. Allocated memory was 199.2MB in the beginning and 240.1MB in the end (delta: 40.9MB). Free memory was 161.3MB in the beginning and 217.6MB in the end (delta: -56.3MB). Peak memory consumption was 42.3MB. 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 - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of to_int at line 34. Possible FailurePath: [L24] int counter = 0; VAL [\old(counter)=6, counter=0] [L26] int r; [L27] double a, x, s; [L28] a = __VERIFIER_nondet_double() [L29] x = a [L30] s = 3.25 [L31] r = 1 VAL [\old(counter)=0, a=2, counter=0, r=1, s=13/4, x=2] [L33] EXPR counter++ VAL [\old(counter)=0, a=2, counter=1, counter++=0, r=1, s=13/4, x=2] [L33] COND TRUE counter++<5 [L34] CALL __VERIFIER_assert((int)(4*s) - 12*r*r == 1) VAL [\old(cond)=0, \old(counter)=0, counter=1] [L17] COND TRUE !(cond) VAL [\old(cond)=0, \old(counter)=0, cond=0, counter=1] [L19] reach_error() VAL [\old(cond)=0, \old(counter)=0, cond=0, counter=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 26 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.2s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 6 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 6 mSDsluCounter, 104 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 48 mSDsCounter, 7 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 22 IncrementalHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 7 mSolverCounterUnsat, 56 mSDtfsCounter, 22 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=26occurred in iteration=0, InterpolantAutomatonStates: 7, 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, 2 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 35 NumberOfCodeBlocks, 35 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 21 ConstructedInterpolants, 0 QuantifiedInterpolants, 42 SizeOfPredicates, 1 NumberOfNonLiveVariables, 69 ConjunctsInSsa, 5 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 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 RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-02-14 23:04:34,363 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...