/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/loop-zilu/benchmark52_polynomial.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-6c470ae [2022-02-14 21:42:18,033 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-14 21:42:18,034 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-14 21:42:18,081 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-02-14 21:42:18,093 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-14 21:42:18,094 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-14 21:42:18,095 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-14 21:42:18,095 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-14 21:42:18,096 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-14 21:42:18,096 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-14 21:42:18,097 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-14 21:42:18,098 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-14 21:42:18,099 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-14 21:42:18,100 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-14 21:42:18,101 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-14 21:42:18,101 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-14 21:42:18,103 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-02-14 21:42:18,118 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2022-02-14 21:42:18,130 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-14 21:42:18,130 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-14 21:42:18,131 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-14 21:42:18,131 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-14 21:42:18,131 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-14 21:42:18,131 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-14 21:42:18,131 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-14 21:42:18,131 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-14 21:42:18,132 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-14 21:42:18,132 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-14 21:42:18,132 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-14 21:42:18,132 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-14 21:42:18,132 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-14 21:42:18,133 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-14 21:42:18,133 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-14 21:42:18,133 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-14 21:42:18,133 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-14 21:42:18,133 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-14 21:42:18,133 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-14 21:42:18,133 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-14 21:42:18,133 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-14 21:42:18,134 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-02-14 21:42:18,134 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-02-14 21:42:18,322 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-14 21:42:18,338 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-14 21:42:18,339 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-14 21:42:18,340 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-14 21:42:18,341 INFO L275 PluginConnector]: CDTParser initialized [2022-02-14 21:42:18,341 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-zilu/benchmark52_polynomial.i [2022-02-14 21:42:18,394 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5deb38d51/d3e8e8e21ab54158990d97c7f9af4179/FLAGcd3167db5 [2022-02-14 21:42:18,797 INFO L306 CDTParser]: Found 1 translation units. [2022-02-14 21:42:18,797 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-zilu/benchmark52_polynomial.i [2022-02-14 21:42:18,801 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5deb38d51/d3e8e8e21ab54158990d97c7f9af4179/FLAGcd3167db5 [2022-02-14 21:42:18,809 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5deb38d51/d3e8e8e21ab54158990d97c7f9af4179 [2022-02-14 21:42:18,811 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-14 21:42:18,812 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-02-14 21:42:18,813 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-14 21:42:18,813 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-14 21:42:18,815 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-14 21:42:18,815 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.02 09:42:18" (1/1) ... [2022-02-14 21:42:18,816 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a8b628e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 09:42:18, skipping insertion in model container [2022-02-14 21:42:18,816 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.02 09:42:18" (1/1) ... [2022-02-14 21:42:18,820 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-14 21:42:18,828 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-14 21:42:18,932 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-zilu/benchmark52_polynomial.i[872,885] [2022-02-14 21:42:18,937 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-14 21:42:18,951 INFO L203 MainTranslator]: Completed pre-run [2022-02-14 21:42:18,960 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-zilu/benchmark52_polynomial.i[872,885] [2022-02-14 21:42:18,963 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-14 21:42:18,973 INFO L208 MainTranslator]: Completed translation [2022-02-14 21:42:18,974 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 09:42:18 WrapperNode [2022-02-14 21:42:18,974 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-14 21:42:18,976 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-14 21:42:18,976 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-14 21:42:18,976 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-14 21:42:18,984 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 09:42:18" (1/1) ... [2022-02-14 21:42:18,984 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 09:42:18" (1/1) ... [2022-02-14 21:42:18,995 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 09:42:18" (1/1) ... [2022-02-14 21:42:18,995 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 09:42:18" (1/1) ... [2022-02-14 21:42:18,999 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 09:42:18" (1/1) ... [2022-02-14 21:42:19,001 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 09:42:18" (1/1) ... [2022-02-14 21:42:19,005 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 09:42:18" (1/1) ... [2022-02-14 21:42:19,007 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-14 21:42:19,008 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-14 21:42:19,008 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-14 21:42:19,009 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-14 21:42:19,010 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 09:42:18" (1/1) ... [2022-02-14 21:42:19,014 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-14 21:42:19,022 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-14 21:42:19,031 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 21:42:19,037 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 21:42:19,066 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-02-14 21:42:19,066 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-14 21:42:19,066 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-02-14 21:42:19,066 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-02-14 21:42:19,066 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-02-14 21:42:19,066 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-02-14 21:42:19,066 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2022-02-14 21:42:19,067 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2022-02-14 21:42:19,067 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-02-14 21:42:19,067 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-14 21:42:19,067 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-02-14 21:42:19,067 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2022-02-14 21:42:19,068 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-02-14 21:42:19,068 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-02-14 21:42:19,068 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-02-14 21:42:19,068 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-14 21:42:19,068 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-14 21:42:19,068 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-02-14 21:42:19,069 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-02-14 21:42:19,069 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-02-14 21:42:19,114 INFO L234 CfgBuilder]: Building ICFG [2022-02-14 21:42:19,115 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-14 21:42:19,176 INFO L275 CfgBuilder]: Performing block encoding [2022-02-14 21:42:19,180 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-14 21:42:19,180 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-02-14 21:42:19,181 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.02 09:42:19 BoogieIcfgContainer [2022-02-14 21:42:19,181 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-14 21:42:19,182 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-02-14 21:42:19,182 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-02-14 21:42:19,183 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-02-14 21:42:19,190 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.02 09:42:19" (1/1) ... [2022-02-14 21:42:19,324 INFO L89 elerationTransformer]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-14 21:42:19,325 INFO L91 elerationTransformer]: Accelerated Formula: (and (< (* v_main_~i~0_3 v_main_~i~0_3) 100) (= v_main_~i~0_2 (+ v_main_~i~0_3 1))) InVars {main_~i~0=v_main_~i~0_3} OutVars{main_~i~0=v_main_~i~0_2} AuxVars[] AssignedVars[main_~i~0] to Formula: (let ((.cse0 (* v_main_~i~0_3 v_main_~i~0_3))) (or (and (<= 100 .cse0) (= v_main_~i~0_3 v_main_~i~0_2)) (and (forall ((v_it_1 Int)) (or (< (+ (* 2 (* v_main_~i~0_3 v_it_1)) (* v_main_~i~0_3 v_main_~i~0_3) (* v_it_1 v_it_1)) 100) (not (<= (+ v_main_~i~0_3 v_it_1 1) v_main_~i~0_2)) (not (<= 1 v_it_1)))) (< .cse0 100) (< v_main_~i~0_3 v_main_~i~0_2)))) InVars {main_~i~0=v_main_~i~0_3} OutVars{main_~i~0=v_main_~i~0_2} AuxVars[] AssignedVars[main_~i~0] [2022-02-14 21:42:19,329 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 14.02 09:42:19 BasicIcfg [2022-02-14 21:42:19,329 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-02-14 21:42:19,330 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-14 21:42:19,330 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-14 21:42:19,348 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-14 21:42:19,348 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.02 09:42:18" (1/4) ... [2022-02-14 21:42:19,349 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1dabc600 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.02 09:42:19, skipping insertion in model container [2022-02-14 21:42:19,349 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 09:42:18" (2/4) ... [2022-02-14 21:42:19,349 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1dabc600 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.02 09:42:19, skipping insertion in model container [2022-02-14 21:42:19,349 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.02 09:42:19" (3/4) ... [2022-02-14 21:42:19,350 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1dabc600 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.02 09:42:19, skipping insertion in model container [2022-02-14 21:42:19,350 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 14.02 09:42:19" (4/4) ... [2022-02-14 21:42:19,350 INFO L111 eAbstractionObserver]: Analyzing ICFG benchmark52_polynomial.iJordan [2022-02-14 21:42:19,354 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2022-02-14 21:42:19,354 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-14 21:42:19,379 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-14 21:42:19,384 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 21:42:19,385 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-02-14 21:42:19,393 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-02-14 21:42:19,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-02-14 21:42:19,400 INFO L506 BasicCegarLoop]: Found error trace [2022-02-14 21:42:19,400 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-14 21:42:19,401 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-14 21:42:19,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-14 21:42:19,406 INFO L85 PathProgramCache]: Analyzing trace with hash 1809217115, now seen corresponding path program 1 times [2022-02-14 21:42:19,413 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-14 21:42:19,414 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352307269] [2022-02-14 21:42:19,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 21:42:19,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-14 21:42:19,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 21:42:19,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-14 21:42:19,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 21:42:19,536 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 21:42:19,536 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-14 21:42:19,537 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352307269] [2022-02-14 21:42:19,537 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352307269] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-14 21:42:19,537 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-14 21:42:19,537 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-02-14 21:42:19,538 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006420654] [2022-02-14 21:42:19,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-14 21:42:19,541 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-02-14 21:42:19,541 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-14 21:42:19,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-02-14 21:42:19,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-14 21:42:19,563 INFO L87 Difference]: Start difference. First operand has 20 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 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 21:42:19,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-14 21:42:19,589 INFO L93 Difference]: Finished difference Result 20 states and 21 transitions. [2022-02-14 21:42:19,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-14 21:42:19,591 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 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 12 [2022-02-14 21:42:19,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-14 21:42:19,600 INFO L225 Difference]: With dead ends: 20 [2022-02-14 21:42:19,600 INFO L226 Difference]: Without dead ends: 13 [2022-02-14 21:42:19,603 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 21:42:19,607 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 12 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-14 21:42:19,608 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 23 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-14 21:42:19,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2022-02-14 21:42:19,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2022-02-14 21:42:19,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 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 21:42:19,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2022-02-14 21:42:19,625 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 12 [2022-02-14 21:42:19,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-14 21:42:19,626 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2022-02-14 21:42:19,626 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 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 21:42:19,626 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2022-02-14 21:42:19,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-02-14 21:42:19,626 INFO L506 BasicCegarLoop]: Found error trace [2022-02-14 21:42:19,626 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-14 21:42:19,627 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-14 21:42:19,627 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-14 21:42:19,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-14 21:42:19,627 INFO L85 PathProgramCache]: Analyzing trace with hash 1810140636, now seen corresponding path program 1 times [2022-02-14 21:42:19,627 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-14 21:42:19,627 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836437919] [2022-02-14 21:42:19,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 21:42:19,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-14 21:42:19,635 ERROR L252 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-02-14 21:42:19,635 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1055229091] [2022-02-14 21:42:19,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 21:42:19,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-14 21:42:19,636 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-14 21:42:19,637 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 21:42:19,638 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 21:42:19,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 21:42:19,676 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 3 conjunts are in the unsatisfiable core [2022-02-14 21:42:19,679 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-14 21:42:19,736 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 21:42:19,737 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-02-14 21:42:19,737 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-14 21:42:19,737 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836437919] [2022-02-14 21:42:19,737 WARN L317 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-02-14 21:42:19,737 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1055229091] [2022-02-14 21:42:19,737 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1055229091] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-14 21:42:19,738 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-14 21:42:19,738 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-02-14 21:42:19,738 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879720449] [2022-02-14 21:42:19,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-14 21:42:19,739 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-02-14 21:42:19,739 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-14 21:42:19,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-02-14 21:42:19,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-14 21:42:19,739 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-14 21:42:19,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-14 21:42:19,746 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2022-02-14 21:42:19,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-14 21:42:19,746 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2022-02-14 21:42:19,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-14 21:42:19,747 INFO L225 Difference]: With dead ends: 14 [2022-02-14 21:42:19,747 INFO L226 Difference]: Without dead ends: 14 [2022-02-14 21:42:19,747 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 10 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 21:42:19,748 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-14 21:42:19,748 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 21 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 1 Unchecked, 0.0s Time] [2022-02-14 21:42:19,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-02-14 21:42:19,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2022-02-14 21:42:19,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 states have internal predecessors, (10), 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 21:42:19,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2022-02-14 21:42:19,751 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 12 [2022-02-14 21:42:19,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-14 21:42:19,751 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2022-02-14 21:42:19,751 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-14 21:42:19,751 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2022-02-14 21:42:19,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-02-14 21:42:19,751 INFO L506 BasicCegarLoop]: Found error trace [2022-02-14 21:42:19,752 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-14 21:42:19,770 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 21:42:19,959 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 21:42:19,959 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-14 21:42:19,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-14 21:42:19,960 INFO L85 PathProgramCache]: Analyzing trace with hash 306506437, now seen corresponding path program 1 times [2022-02-14 21:42:19,960 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-14 21:42:19,960 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95410846] [2022-02-14 21:42:19,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 21:42:19,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-14 21:42:19,967 ERROR L252 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-02-14 21:42:19,967 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1720734705] [2022-02-14 21:42:19,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 21:42:19,968 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-14 21:42:19,968 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-14 21:42:19,969 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 21:42:19,970 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 21:42:20,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-02-14 21:42:20,573 WARN L132 FreeRefinementEngine]: Strategy CAMEL was unsuccessful and could not determine trace feasibility [2022-02-14 21:42:20,573 INFO L628 BasicCegarLoop]: Counterexample might be feasible [2022-02-14 21:42:20,577 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-02-14 21:42:20,585 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 21:42:20,778 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 21:42:20,780 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-02-14 21:42:20,782 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-02-14 21:42:20,788 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.02 09:42:20 BasicIcfg [2022-02-14 21:42:20,788 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-02-14 21:42:20,792 INFO L158 Benchmark]: Toolchain (without parser) took 1977.10ms. Allocated memory was 188.7MB in the beginning and 255.9MB in the end (delta: 67.1MB). Free memory was 132.8MB in the beginning and 173.4MB in the end (delta: -40.6MB). Peak memory consumption was 26.7MB. Max. memory is 8.0GB. [2022-02-14 21:42:20,794 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 188.7MB. Free memory is still 149.3MB. There was no memory consumed. Max. memory is 8.0GB. [2022-02-14 21:42:20,795 INFO L158 Benchmark]: CACSL2BoogieTranslator took 161.63ms. Allocated memory was 188.7MB in the beginning and 255.9MB in the end (delta: 67.1MB). Free memory was 132.5MB in the beginning and 231.1MB in the end (delta: -98.6MB). Peak memory consumption was 13.5MB. Max. memory is 8.0GB. [2022-02-14 21:42:20,795 INFO L158 Benchmark]: Boogie Preprocessor took 31.52ms. Allocated memory is still 255.9MB. Free memory was 231.1MB in the beginning and 229.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-02-14 21:42:20,795 INFO L158 Benchmark]: RCFGBuilder took 173.33ms. Allocated memory is still 255.9MB. Free memory was 229.5MB in the beginning and 218.5MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-02-14 21:42:20,795 INFO L158 Benchmark]: IcfgTransformer took 146.74ms. Allocated memory is still 255.9MB. Free memory was 218.5MB in the beginning and 210.6MB in the end (delta: 7.8MB). Peak memory consumption was 7.3MB. Max. memory is 8.0GB. [2022-02-14 21:42:20,796 INFO L158 Benchmark]: TraceAbstraction took 1458.52ms. Allocated memory is still 255.9MB. Free memory was 210.1MB in the beginning and 173.4MB in the end (delta: 36.7MB). Peak memory consumption was 36.7MB. Max. memory is 8.0GB. [2022-02-14 21:42:20,797 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from IcfgTransformer: - StatisticsResult: Jordan loop acceleration statistics 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 188.7MB. Free memory is still 149.3MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 161.63ms. Allocated memory was 188.7MB in the beginning and 255.9MB in the end (delta: 67.1MB). Free memory was 132.5MB in the beginning and 231.1MB in the end (delta: -98.6MB). Peak memory consumption was 13.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 31.52ms. Allocated memory is still 255.9MB. Free memory was 231.1MB in the beginning and 229.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 173.33ms. Allocated memory is still 255.9MB. Free memory was 229.5MB in the beginning and 218.5MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * IcfgTransformer took 146.74ms. Allocated memory is still 255.9MB. Free memory was 218.5MB in the beginning and 210.6MB in the end (delta: 7.8MB). Peak memory consumption was 7.3MB. Max. memory is 8.0GB. * TraceAbstraction took 1458.52ms. Allocated memory is still 255.9MB. Free memory was 210.1MB in the beginning and 173.4MB in the end (delta: 36.7MB). Peak memory consumption was 36.7MB. 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: 16]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L20] int i = __VERIFIER_nondet_int(); [L21] COND FALSE !(!(i < 10 && i > -10)) [L22] COND TRUE i * i < 100 [L23] i = i + 1 [L22] COND FALSE !(i * i < 100) [L25] CALL __VERIFIER_assert(i == 10) [L15] COND TRUE !cond [L16] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 20 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.4s, OverallIterations: 3, 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, 13 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 12 mSDsluCounter, 44 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 1 IncrementalHoareTripleChecker+Unchecked, 12 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5 IncrementalHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 32 mSDtfsCounter, 5 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 15 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=0, InterpolantAutomatonStates: 6, 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, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 37 NumberOfCodeBlocks, 37 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 22 ConstructedInterpolants, 0 QuantifiedInterpolants, 36 SizeOfPredicates, 1 NumberOfNonLiveVariables, 51 ConjunctsInSsa, 3 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 21:42:20,809 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...