/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_valuebound2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-5d317bd [2022-03-18 19:28:56,929 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-18 19:28:56,930 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-18 19:28:56,968 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-03-18 19:28:56,968 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-03-18 19:28:56,969 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-03-18 19:28:56,971 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-03-18 19:28:56,973 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-03-18 19:28:56,974 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-03-18 19:28:56,978 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-03-18 19:28:56,979 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-03-18 19:28:56,979 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-03-18 19:28:56,980 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-18 19:28:56,980 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-18 19:28:56,981 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-18 19:28:56,981 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-18 19:28:56,981 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-18 19:28:56,982 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-18 19:28:56,983 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-18 19:28:56,984 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-18 19:28:56,984 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-03-18 19:28:56,987 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-18 19:28:56,988 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-18 19:28:56,988 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-18 19:28:56,989 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-18 19:28:56,990 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-03-18 19:28:56,995 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-18 19:28:56,995 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-18 19:28:56,998 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-18 19:28:56,999 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2022-03-18 19:28:57,004 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-18 19:28:57,004 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-18 19:28:57,005 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-18 19:28:57,005 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-18 19:28:57,005 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-18 19:28:57,006 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-18 19:28:57,006 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-18 19:28:57,006 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-18 19:28:57,006 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-18 19:28:57,006 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-18 19:28:57,006 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-18 19:28:57,006 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-18 19:28:57,006 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-18 19:28:57,007 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-18 19:28:57,007 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-18 19:28:57,007 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-18 19:28:57,007 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-18 19:28:57,007 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-18 19:28:57,007 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-18 19:28:57,007 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-18 19:28:57,007 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-18 19:28:57,008 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-03-18 19:28:57,008 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-03-18 19:28:57,175 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-18 19:28:57,200 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-18 19:28:57,202 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-18 19:28:57,203 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-18 19:28:57,204 INFO L275 PluginConnector]: CDTParser initialized [2022-03-18 19:28:57,205 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/freire2_valuebound2.c [2022-03-18 19:28:57,259 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a00918098/6e98f5beecd34cc48b4e9028d56e8ab2/FLAG76e211adb [2022-03-18 19:28:57,598 INFO L306 CDTParser]: Found 1 translation units. [2022-03-18 19:28:57,598 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/freire2_valuebound2.c [2022-03-18 19:28:57,602 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a00918098/6e98f5beecd34cc48b4e9028d56e8ab2/FLAG76e211adb [2022-03-18 19:28:57,610 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a00918098/6e98f5beecd34cc48b4e9028d56e8ab2 [2022-03-18 19:28:57,612 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-18 19:28:57,613 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-03-18 19:28:57,614 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-18 19:28:57,614 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-18 19:28:57,616 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-18 19:28:57,616 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.03 07:28:57" (1/1) ... [2022-03-18 19:28:57,617 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ec323fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 07:28:57, skipping insertion in model container [2022-03-18 19:28:57,617 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.03 07:28:57" (1/1) ... [2022-03-18 19:28:57,628 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-18 19:28:57,636 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-18 19:28:57,767 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_valuebound2.c[709,722] [2022-03-18 19:28:57,796 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-18 19:28:57,801 INFO L203 MainTranslator]: Completed pre-run [2022-03-18 19:28:57,811 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_valuebound2.c[709,722] [2022-03-18 19:28:57,832 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-18 19:28:57,840 INFO L208 MainTranslator]: Completed translation [2022-03-18 19:28:57,841 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 07:28:57 WrapperNode [2022-03-18 19:28:57,841 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-18 19:28:57,841 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-18 19:28:57,841 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-18 19:28:57,842 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-18 19:28:57,851 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 07:28:57" (1/1) ... [2022-03-18 19:28:57,851 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 07:28:57" (1/1) ... [2022-03-18 19:28:57,864 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 07:28:57" (1/1) ... [2022-03-18 19:28:57,865 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 07:28:57" (1/1) ... [2022-03-18 19:28:57,868 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 07:28:57" (1/1) ... [2022-03-18 19:28:57,871 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 07:28:57" (1/1) ... [2022-03-18 19:28:57,871 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 07:28:57" (1/1) ... [2022-03-18 19:28:57,872 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-18 19:28:57,873 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-18 19:28:57,873 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-18 19:28:57,873 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-18 19:28:57,875 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 07:28:57" (1/1) ... [2022-03-18 19:28:57,880 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-18 19:28:57,887 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 19:28:57,898 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) [2022-03-18 19:28:57,923 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 [2022-03-18 19:28:57,955 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-03-18 19:28:57,955 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-18 19:28:57,955 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-03-18 19:28:57,955 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-03-18 19:28:57,955 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-03-18 19:28:57,955 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-03-18 19:28:57,955 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-03-18 19:28:57,955 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-03-18 19:28:57,956 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-03-18 19:28:57,956 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-18 19:28:57,956 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2022-03-18 19:28:57,959 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-03-18 19:28:57,959 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-03-18 19:28:57,960 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-03-18 19:28:57,960 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-03-18 19:28:57,960 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-18 19:28:57,960 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-18 19:28:57,960 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-18 19:28:57,960 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-18 19:28:57,960 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-18 19:28:58,004 INFO L234 CfgBuilder]: Building ICFG [2022-03-18 19:28:58,006 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-18 19:28:58,111 INFO L275 CfgBuilder]: Performing block encoding [2022-03-18 19:28:58,116 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-18 19:28:58,116 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-03-18 19:28:58,117 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.03 07:28:58 BoogieIcfgContainer [2022-03-18 19:28:58,117 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-18 19:28:58,121 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-03-18 19:28:58,121 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-03-18 19:28:58,122 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-03-18 19:28:58,125 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.03 07:28:58" (1/1) ... [2022-03-18 19:28:58,145 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 18.03 07:28:58 BasicIcfg [2022-03-18 19:28:58,145 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-03-18 19:28:58,156 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-18 19:28:58,156 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-18 19:28:58,158 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-18 19:28:58,158 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.03 07:28:57" (1/4) ... [2022-03-18 19:28:58,159 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@799bc305 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.03 07:28:58, skipping insertion in model container [2022-03-18 19:28:58,159 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 07:28:57" (2/4) ... [2022-03-18 19:28:58,159 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@799bc305 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.03 07:28:58, skipping insertion in model container [2022-03-18 19:28:58,159 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.03 07:28:58" (3/4) ... [2022-03-18 19:28:58,159 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@799bc305 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.03 07:28:58, skipping insertion in model container [2022-03-18 19:28:58,159 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 18.03 07:28:58" (4/4) ... [2022-03-18 19:28:58,160 INFO L111 eAbstractionObserver]: Analyzing ICFG freire2_valuebound2.cJordan [2022-03-18 19:28:58,163 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2022-03-18 19:28:58,163 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-18 19:28:58,190 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-18 19:28:58,196 INFO L340 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 [2022-03-18 19:28:58,196 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-03-18 19:28:58,203 INFO L276 IsEmpty]: Start isEmpty. Operand has 31 states, 16 states have (on average 1.375) internal successors, (22), 17 states have internal predecessors, (22), 9 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-03-18 19:28:58,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-18 19:28:58,208 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 19:28:58,209 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 19:28:58,209 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 19:28:58,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 19:28:58,212 INFO L85 PathProgramCache]: Analyzing trace with hash -179702132, now seen corresponding path program 1 times [2022-03-18 19:28:58,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 19:28:58,218 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785416649] [2022-03-18 19:28:58,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 19:28:58,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 19:28:58,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 19:28:58,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 19:28:58,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 19:28:58,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 19:28:58,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 19:28:58,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 19:28:58,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 19:28:58,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785416649] [2022-03-18 19:28:58,395 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785416649] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 19:28:58,395 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 19:28:58,395 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-18 19:28:58,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172776576] [2022-03-18 19:28:58,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 19:28:58,401 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-18 19:28:58,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 19:28:58,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-18 19:28:58,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-18 19:28:58,430 INFO L87 Difference]: Start difference. First operand has 31 states, 16 states have (on average 1.375) internal successors, (22), 17 states have internal predecessors, (22), 9 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-03-18 19:28:58,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 19:28:58,491 INFO L93 Difference]: Finished difference Result 31 states and 36 transitions. [2022-03-18 19:28:58,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-18 19:28:58,493 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 17 [2022-03-18 19:28:58,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 19:28:58,502 INFO L225 Difference]: With dead ends: 31 [2022-03-18 19:28:58,502 INFO L226 Difference]: Without dead ends: 26 [2022-03-18 19:28:58,504 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-18 19:28:58,507 INFO L912 BasicCegarLoop]: 29 mSDtfsCounter, 15 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-18 19:28:58,508 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 32 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-18 19:28:58,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-03-18 19:28:58,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2022-03-18 19:28:58,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 14 states have internal predecessors, (15), 9 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-03-18 19:28:58,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 31 transitions. [2022-03-18 19:28:58,548 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 31 transitions. Word has length 17 [2022-03-18 19:28:58,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 19:28:58,548 INFO L478 AbstractCegarLoop]: Abstraction has 26 states and 31 transitions. [2022-03-18 19:28:58,549 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-03-18 19:28:58,549 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 31 transitions. [2022-03-18 19:28:58,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-18 19:28:58,550 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 19:28:58,550 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 19:28:58,550 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-18 19:28:58,550 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 19:28:58,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 19:28:58,552 INFO L85 PathProgramCache]: Analyzing trace with hash -1985279762, now seen corresponding path program 1 times [2022-03-18 19:28:58,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 19:28:58,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341129052] [2022-03-18 19:28:58,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 19:28:58,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 19:28:58,567 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-18 19:28:58,567 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [304119926] [2022-03-18 19:28:58,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 19:28:58,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 19:28:58,568 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 19:28:58,575 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) [2022-03-18 19:28:58,596 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-03-18 19:28:58,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-18 19:28:58,628 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-18 19:28:58,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-18 19:28:58,652 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-18 19:28:58,653 INFO L614 BasicCegarLoop]: Counterexample is feasible [2022-03-18 19:28:58,654 INFO L788 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-03-18 19:28:58,683 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-03-18 19:28:58,871 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 19:28:58,874 INFO L718 BasicCegarLoop]: Path program histogram: [1, 1] [2022-03-18 19:28:58,876 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-18 19:28:58,890 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.03 07:28:58 BasicIcfg [2022-03-18 19:28:58,891 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-18 19:28:58,891 INFO L158 Benchmark]: Toolchain (without parser) took 1278.20ms. Allocated memory was 201.3MB in the beginning and 332.4MB in the end (delta: 131.1MB). Free memory was 146.1MB in the beginning and 260.5MB in the end (delta: -114.4MB). Peak memory consumption was 16.3MB. Max. memory is 8.0GB. [2022-03-18 19:28:58,892 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 201.3MB. Free memory was 162.6MB in the beginning and 162.5MB in the end (delta: 73.9kB). There was no memory consumed. Max. memory is 8.0GB. [2022-03-18 19:28:58,892 INFO L158 Benchmark]: CACSL2BoogieTranslator took 227.22ms. Allocated memory was 201.3MB in the beginning and 332.4MB in the end (delta: 131.1MB). Free memory was 145.9MB in the beginning and 303.7MB in the end (delta: -157.8MB). Peak memory consumption was 13.1MB. Max. memory is 8.0GB. [2022-03-18 19:28:58,893 INFO L158 Benchmark]: Boogie Preprocessor took 31.22ms. Allocated memory is still 332.4MB. Free memory was 303.7MB in the beginning and 302.2MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-03-18 19:28:58,893 INFO L158 Benchmark]: RCFGBuilder took 244.13ms. Allocated memory is still 332.4MB. Free memory was 302.2MB in the beginning and 291.7MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-03-18 19:28:58,893 INFO L158 Benchmark]: IcfgTransformer took 24.82ms. Allocated memory is still 332.4MB. Free memory was 291.7MB in the beginning and 290.4MB in the end (delta: 1.3MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-18 19:28:58,894 INFO L158 Benchmark]: TraceAbstraction took 734.78ms. Allocated memory is still 332.4MB. Free memory was 290.1MB in the beginning and 260.5MB in the end (delta: 29.6MB). Peak memory consumption was 29.4MB. Max. memory is 8.0GB. [2022-03-18 19:28:58,896 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 201.3MB. Free memory was 162.6MB in the beginning and 162.5MB in the end (delta: 73.9kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 227.22ms. Allocated memory was 201.3MB in the beginning and 332.4MB in the end (delta: 131.1MB). Free memory was 145.9MB in the beginning and 303.7MB in the end (delta: -157.8MB). Peak memory consumption was 13.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 31.22ms. Allocated memory is still 332.4MB. Free memory was 303.7MB in the beginning and 302.2MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 244.13ms. Allocated memory is still 332.4MB. Free memory was 302.2MB in the beginning and 291.7MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * IcfgTransformer took 24.82ms. Allocated memory is still 332.4MB. Free memory was 291.7MB in the beginning and 290.4MB in the end (delta: 1.3MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * TraceAbstraction took 734.78ms. Allocated memory is still 332.4MB. Free memory was 290.1MB in the beginning and 260.5MB in the end (delta: 29.6MB). Peak memory consumption was 29.4MB. 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, overapproximation of someBinaryDOUBLEComparisonOperation at line 28. Possible FailurePath: [L25] int r; [L26] double a, x, s; [L27] a = __VERIFIER_nondet_double() [L28] CALL assume_abort_if_not(a>=0 && a<=2) VAL [\old(cond)=1] [L14] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L28] RET assume_abort_if_not(a>=0 && a<=2) VAL [a=2] [L29] x = a [L30] s = 3.25 [L31] r = 1 VAL [a=2, r=1, s=13/4, x=2] [L33] COND TRUE 1 VAL [a=2, r=1, s=13/4, x=2] [L34] CALL __VERIFIER_assert((int)(4*s) - 12*r*r == 1) VAL [\old(cond)=0] [L17] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L19] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 31 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.7s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 22 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 15 mSDsluCounter, 32 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3 mSDsCounter, 8 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 9 IncrementalHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 8 mSolverCounterUnsat, 29 mSDtfsCounter, 9 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=31occurred in iteration=0, InterpolantAutomatonStates: 3, 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 34 NumberOfCodeBlocks, 34 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 16 ConstructedInterpolants, 0 QuantifiedInterpolants, 22 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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 [2022-03-18 19:28:58,927 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...