/usr/bin/java -ea -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/bresenham-ll_unwindbound1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-e106359-m [2022-04-14 20:23:23,667 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-14 20:23:23,669 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-14 20:23:23,725 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-04-14 20:23:23,725 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-04-14 20:23:23,726 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-04-14 20:23:23,727 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-04-14 20:23:23,729 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-04-14 20:23:23,730 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-04-14 20:23:23,731 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-04-14 20:23:23,732 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-04-14 20:23:23,733 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-04-14 20:23:23,733 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-14 20:23:23,734 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-14 20:23:23,735 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-14 20:23:23,736 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-14 20:23:23,736 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-14 20:23:23,737 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-14 20:23:23,738 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-14 20:23:23,740 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-14 20:23:23,741 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-14 20:23:23,742 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-14 20:23:23,742 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-14 20:23:23,743 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-14 20:23:23,744 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-14 20:23:23,745 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-04-14 20:23:23,750 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-14 20:23:23,750 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-14 20:23:23,751 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-14 20:23:23,751 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2022-04-14 20:23:23,757 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-14 20:23:23,757 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-14 20:23:23,758 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-14 20:23:23,758 INFO L138 SettingsManager]: * sizeof long=4 [2022-04-14 20:23:23,758 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-14 20:23:23,758 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-04-14 20:23:23,758 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-14 20:23:23,758 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-14 20:23:23,758 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-14 20:23:23,759 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-14 20:23:23,759 INFO L138 SettingsManager]: * sizeof long double=12 [2022-04-14 20:23:23,759 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-14 20:23:23,759 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-14 20:23:23,759 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-14 20:23:23,759 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-14 20:23:23,759 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-14 20:23:23,759 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-04-14 20:23:23,760 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-14 20:23:23,760 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-14 20:23:23,760 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-14 20:23:23,760 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-04-14 20:23:23,760 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-04-14 20:23:23,761 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-04-14 20:23:23,974 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-14 20:23:23,993 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-14 20:23:23,995 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-14 20:23:23,995 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-14 20:23:23,996 INFO L275 PluginConnector]: CDTParser initialized [2022-04-14 20:23:23,997 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/bresenham-ll_unwindbound1.c [2022-04-14 20:23:24,059 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd0f855d8/46c2a857561449be86ac773b162de3ca/FLAG9be5a713b [2022-04-14 20:23:24,427 INFO L306 CDTParser]: Found 1 translation units. [2022-04-14 20:23:24,427 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/bresenham-ll_unwindbound1.c [2022-04-14 20:23:24,432 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd0f855d8/46c2a857561449be86ac773b162de3ca/FLAG9be5a713b [2022-04-14 20:23:24,441 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd0f855d8/46c2a857561449be86ac773b162de3ca [2022-04-14 20:23:24,443 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-14 20:23:24,444 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-04-14 20:23:24,451 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-14 20:23:24,451 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-14 20:23:24,453 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-14 20:23:24,454 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.04 08:23:24" (1/1) ... [2022-04-14 20:23:24,455 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e8d6e01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 08:23:24, skipping insertion in model container [2022-04-14 20:23:24,455 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.04 08:23:24" (1/1) ... [2022-04-14 20:23:24,464 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-14 20:23:24,474 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-14 20:23:24,622 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/bresenham-ll_unwindbound1.c[597,610] [2022-04-14 20:23:24,652 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-14 20:23:24,658 INFO L203 MainTranslator]: Completed pre-run [2022-04-14 20:23:24,667 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/bresenham-ll_unwindbound1.c[597,610] [2022-04-14 20:23:24,673 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-14 20:23:24,683 INFO L208 MainTranslator]: Completed translation [2022-04-14 20:23:24,683 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 08:23:24 WrapperNode [2022-04-14 20:23:24,683 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-14 20:23:24,684 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-14 20:23:24,684 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-14 20:23:24,684 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-14 20:23:24,692 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 08:23:24" (1/1) ... [2022-04-14 20:23:24,693 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 08:23:24" (1/1) ... [2022-04-14 20:23:24,697 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 08:23:24" (1/1) ... [2022-04-14 20:23:24,697 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 08:23:24" (1/1) ... [2022-04-14 20:23:24,702 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 08:23:24" (1/1) ... [2022-04-14 20:23:24,705 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 08:23:24" (1/1) ... [2022-04-14 20:23:24,705 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 08:23:24" (1/1) ... [2022-04-14 20:23:24,707 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-14 20:23:24,707 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-14 20:23:24,708 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-14 20:23:24,708 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-14 20:23:24,708 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 08:23:24" (1/1) ... [2022-04-14 20:23:24,716 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-14 20:23:24,726 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-14 20:23:24,739 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) [2022-04-14 20:23:24,743 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 [2022-04-14 20:23:24,767 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-04-14 20:23:24,767 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-14 20:23:24,767 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-04-14 20:23:24,768 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-04-14 20:23:24,769 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-04-14 20:23:24,769 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-04-14 20:23:24,769 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-04-14 20:23:24,769 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-04-14 20:23:24,769 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-04-14 20:23:24,769 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-14 20:23:24,769 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-04-14 20:23:24,769 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-04-14 20:23:24,770 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-04-14 20:23:24,770 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-04-14 20:23:24,770 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-04-14 20:23:24,772 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-14 20:23:24,772 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-14 20:23:24,772 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-14 20:23:24,772 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-14 20:23:24,772 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-14 20:23:24,817 INFO L234 CfgBuilder]: Building ICFG [2022-04-14 20:23:24,818 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-14 20:23:24,959 INFO L275 CfgBuilder]: Performing block encoding [2022-04-14 20:23:24,963 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-14 20:23:24,964 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-04-14 20:23:24,965 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.04 08:23:24 BoogieIcfgContainer [2022-04-14 20:23:24,965 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-14 20:23:24,965 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-04-14 20:23:24,965 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-04-14 20:23:24,967 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-04-14 20:23:24,969 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.04 08:23:24" (1/1) ... [2022-04-14 20:23:24,971 INFO L168 ansformationObserver]: Applying ICFG transformation LOOP_ACCELERATION_JORDAN [2022-04-14 20:23:24,991 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 14.04 08:23:24 BasicIcfg [2022-04-14 20:23:24,991 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-04-14 20:23:24,992 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-14 20:23:24,992 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-14 20:23:24,995 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-14 20:23:24,995 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.04 08:23:24" (1/4) ... [2022-04-14 20:23:24,995 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ff17365 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.04 08:23:24, skipping insertion in model container [2022-04-14 20:23:24,995 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 08:23:24" (2/4) ... [2022-04-14 20:23:24,996 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ff17365 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.04 08:23:24, skipping insertion in model container [2022-04-14 20:23:24,996 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.04 08:23:24" (3/4) ... [2022-04-14 20:23:24,996 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ff17365 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.04 08:23:24, skipping insertion in model container [2022-04-14 20:23:24,996 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 14.04 08:23:24" (4/4) ... [2022-04-14 20:23:24,997 INFO L111 eAbstractionObserver]: Analyzing ICFG bresenham-ll_unwindbound1.cJordan [2022-04-14 20:23:25,001 INFO L202 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2022-04-14 20:23:25,001 INFO L161 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-04-14 20:23:25,033 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-14 20:23:25,038 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 [2022-04-14 20:23:25,038 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-04-14 20:23:25,066 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 16 states have (on average 1.375) internal successors, (22), 17 states have internal predecessors, (22), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-14 20:23:25,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-04-14 20:23:25,071 INFO L491 BasicCegarLoop]: Found error trace [2022-04-14 20:23:25,071 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-14 20:23:25,071 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-14 20:23:25,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-14 20:23:25,075 INFO L85 PathProgramCache]: Analyzing trace with hash -498253564, now seen corresponding path program 1 times [2022-04-14 20:23:25,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-14 20:23:25,083 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027264717] [2022-04-14 20:23:25,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-14 20:23:25,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-14 20:23:25,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-14 20:23:25,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-14 20:23:25,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-14 20:23:25,254 INFO L290 TraceCheckUtils]: 0: Hoare triple {33#(and (= ~counter~0 |old(~counter~0)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} [67] ULTIMATE.initENTRY-->ULTIMATE.initFINAL: Formula: (let ((.cse0 (select |v_#memory_int_1| 1))) (and (= v_~counter~0_3 0) (= (select |v_#length_1| 2) 15) (= 48 (select .cse0 0)) (= (select |v_#valid_1| 2) 1) (= (select |v_#valid_1| 0) 0) (< 0 |v_#StackHeapBarrier_1|) (= |v_#NULL.base_1| 0) (= 1 (select |v_#valid_1| 3)) (= (select |v_#length_1| 3) 12) (= (select |v_#valid_1| 1) 1) (= 2 (select |v_#length_1| 1)) (= (select .cse0 1) 0) (= |v_#NULL.offset_1| 0))) InVars {#memory_int=|v_#memory_int_1|, #StackHeapBarrier=|v_#StackHeapBarrier_1|, #length=|v_#length_1|, #valid=|v_#valid_1|} OutVars{~counter~0=v_~counter~0_3, #StackHeapBarrier=|v_#StackHeapBarrier_1|, #valid=|v_#valid_1|, #memory_int=|v_#memory_int_1|, #NULL.offset=|v_#NULL.offset_1|, #length=|v_#length_1|, #NULL.base=|v_#NULL.base_1|} AuxVars[] AssignedVars[~counter~0, #NULL.offset, #NULL.base] {28#true} is VALID [2022-04-14 20:23:25,254 INFO L290 TraceCheckUtils]: 1: Hoare triple {28#true} [70] ULTIMATE.initFINAL-->ULTIMATE.initEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {28#true} is VALID [2022-04-14 20:23:25,255 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {28#true} {28#true} [91] ULTIMATE.initEXIT-->L-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {28#true} is VALID [2022-04-14 20:23:25,256 INFO L272 TraceCheckUtils]: 0: Hoare triple {28#true} [65] ULTIMATE.startENTRY-->ULTIMATE.initENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {33#(and (= ~counter~0 |old(~counter~0)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-14 20:23:25,256 INFO L290 TraceCheckUtils]: 1: Hoare triple {33#(and (= ~counter~0 |old(~counter~0)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} [67] ULTIMATE.initENTRY-->ULTIMATE.initFINAL: Formula: (let ((.cse0 (select |v_#memory_int_1| 1))) (and (= v_~counter~0_3 0) (= (select |v_#length_1| 2) 15) (= 48 (select .cse0 0)) (= (select |v_#valid_1| 2) 1) (= (select |v_#valid_1| 0) 0) (< 0 |v_#StackHeapBarrier_1|) (= |v_#NULL.base_1| 0) (= 1 (select |v_#valid_1| 3)) (= (select |v_#length_1| 3) 12) (= (select |v_#valid_1| 1) 1) (= 2 (select |v_#length_1| 1)) (= (select .cse0 1) 0) (= |v_#NULL.offset_1| 0))) InVars {#memory_int=|v_#memory_int_1|, #StackHeapBarrier=|v_#StackHeapBarrier_1|, #length=|v_#length_1|, #valid=|v_#valid_1|} OutVars{~counter~0=v_~counter~0_3, #StackHeapBarrier=|v_#StackHeapBarrier_1|, #valid=|v_#valid_1|, #memory_int=|v_#memory_int_1|, #NULL.offset=|v_#NULL.offset_1|, #length=|v_#length_1|, #NULL.base=|v_#NULL.base_1|} AuxVars[] AssignedVars[~counter~0, #NULL.offset, #NULL.base] {28#true} is VALID [2022-04-14 20:23:25,256 INFO L290 TraceCheckUtils]: 2: Hoare triple {28#true} [70] ULTIMATE.initFINAL-->ULTIMATE.initEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {28#true} is VALID [2022-04-14 20:23:25,257 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {28#true} {28#true} [91] ULTIMATE.initEXIT-->L-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {28#true} is VALID [2022-04-14 20:23:25,257 INFO L272 TraceCheckUtils]: 4: Hoare triple {28#true} [66] L-1-->mainENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {28#true} is VALID [2022-04-14 20:23:25,257 INFO L290 TraceCheckUtils]: 5: Hoare triple {28#true} [69] mainENTRY-->L31-3: Formula: (and (<= |v_main_#t~nondet5_2| 2147483647) (= v_main_~X~0_2 |v_main_#t~nondet4_2|) (= v_main_~Y~0_3 |v_main_#t~nondet5_2|) (= (+ (* v_main_~Y~0_3 2) (* (- 1) v_main_~X~0_2)) v_main_~v~0_2) (<= 0 (+ |v_main_#t~nondet4_2| 2147483648)) (= v_main_~x~0_4 0) (<= |v_main_#t~nondet4_2| 2147483647) (<= 0 (+ |v_main_#t~nondet5_2| 2147483648)) (= v_main_~y~0_3 0)) InVars {main_#t~nondet5=|v_main_#t~nondet5_2|, main_#t~nondet4=|v_main_#t~nondet4_2|} OutVars{main_~v~0=v_main_~v~0_2, main_~x~0=v_main_~x~0_4, main_~Y~0=v_main_~Y~0_3, main_~yx~0=v_main_~yx~0_3, main_~X~0=v_main_~X~0_2, main_~y~0=v_main_~y~0_3, main_~xy~0=v_main_~xy~0_3} AuxVars[] AssignedVars[main_#t~nondet5, main_#t~nondet4, main_~v~0, main_~x~0, main_~Y~0, main_~yx~0, main_~X~0, main_~y~0, main_~xy~0] {28#true} is VALID [2022-04-14 20:23:25,257 INFO L290 TraceCheckUtils]: 6: Hoare triple {28#true} [71] L31-3-->L31-4: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] {29#false} is VALID [2022-04-14 20:23:25,258 INFO L290 TraceCheckUtils]: 7: Hoare triple {29#false} [73] L31-4-->L49: Formula: (and (= v_main_~xy~0_1 (* v_main_~x~0_3 v_main_~y~0_1)) (= v_main_~yx~0_1 (* v_main_~Y~0_1 v_main_~x~0_3))) InVars {main_~y~0=v_main_~y~0_1, main_~x~0=v_main_~x~0_3, main_~Y~0=v_main_~Y~0_1} OutVars{main_~xy~0=v_main_~xy~0_1, main_~y~0=v_main_~y~0_1, main_~x~0=v_main_~x~0_3, main_~yx~0=v_main_~yx~0_1, main_~Y~0=v_main_~Y~0_1} AuxVars[] AssignedVars[main_~yx~0, main_~xy~0] {29#false} is VALID [2022-04-14 20:23:25,258 INFO L272 TraceCheckUtils]: 8: Hoare triple {29#false} [76] L49-->__VERIFIER_assertENTRY: Formula: (= |v___VERIFIER_assert_#in~condInParam_2| (ite (= 0 (+ (* v_main_~xy~0_7 (- 2)) (* v_main_~y~0_9 2) (* (- 1) v_main_~X~0_11) (* v_main_~yx~0_7 2) (* (- 1) v_main_~v~0_11) (* 2 v_main_~Y~0_11))) 1 0)) InVars {main_~v~0=v_main_~v~0_11, main_~yx~0=v_main_~yx~0_7, main_~Y~0=v_main_~Y~0_11, main_~X~0=v_main_~X~0_11, main_~xy~0=v_main_~xy~0_7, main_~y~0=v_main_~y~0_9} OutVars{__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~condInParam_2|} AuxVars[] AssignedVars[__VERIFIER_assert_#in~cond, main_~v~0, main_~yx~0, main_~Y~0, main_~X~0, main_~xy~0, main_~y~0] {29#false} is VALID [2022-04-14 20:23:25,258 INFO L290 TraceCheckUtils]: 9: Hoare triple {29#false} [79] __VERIFIER_assertENTRY-->L14: Formula: (= v___VERIFIER_assert_~cond_3 |v___VERIFIER_assert_#in~cond_1|) InVars {__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~cond_1|} OutVars{__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~cond_1|, __VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_3} AuxVars[] AssignedVars[__VERIFIER_assert_~cond] {29#false} is VALID [2022-04-14 20:23:25,258 INFO L290 TraceCheckUtils]: 10: Hoare triple {29#false} [83] L14-->L15: Formula: (= v___VERIFIER_assert_~cond_1 0) InVars {__VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_1} OutVars{__VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_1} AuxVars[] AssignedVars[] {29#false} is VALID [2022-04-14 20:23:25,259 INFO L290 TraceCheckUtils]: 11: Hoare triple {29#false} [87] L15-->__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {29#false} is VALID [2022-04-14 20:23:25,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-14 20:23:25,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-14 20:23:25,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027264717] [2022-04-14 20:23:25,260 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027264717] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-14 20:23:25,260 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-14 20:23:25,260 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-14 20:23:25,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343264045] [2022-04-14 20:23:25,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-14 20:23:25,264 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 [2022-04-14 20:23:25,265 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-14 20:23:25,267 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 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) [2022-04-14 20:23:25,285 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 12 edges. 12 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-14 20:23:25,285 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-14 20:23:25,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-14 20:23:25,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-14 20:23:25,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-14 20:23:25,306 INFO L87 Difference]: Start difference. First operand has 25 states, 16 states have (on average 1.375) internal successors, (22), 17 states have internal predecessors, (22), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) 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) [2022-04-14 20:23:25,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-14 20:23:25,386 INFO L93 Difference]: Finished difference Result 26 states and 29 transitions. [2022-04-14 20:23:25,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-14 20:23:25,387 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 [2022-04-14 20:23:25,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-14 20:23:25,388 INFO L82 GeneralOperation]: Start removeUnreachable. 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) [2022-04-14 20:23:25,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 32 transitions. [2022-04-14 20:23:25,392 INFO L82 GeneralOperation]: Start removeUnreachable. 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) [2022-04-14 20:23:25,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 32 transitions. [2022-04-14 20:23:25,394 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 3 states and 32 transitions. [2022-04-14 20:23:25,424 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 32 edges. 32 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-14 20:23:25,429 INFO L225 Difference]: With dead ends: 26 [2022-04-14 20:23:25,430 INFO L226 Difference]: Without dead ends: 21 [2022-04-14 20:23:25,431 INFO L912 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 [2022-04-14 20:23:25,433 INFO L913 BasicCegarLoop]: 27 mSDtfsCounter, 6 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-14 20:23:25,433 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 31 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-14 20:23:25,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2022-04-14 20:23:25,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 20. [2022-04-14 20:23:25,450 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-14 20:23:25,450 INFO L82 GeneralOperation]: Start isEquivalent. First operand 21 states. Second operand has 20 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 14 states have internal predecessors, (17), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-14 20:23:25,451 INFO L74 IsIncluded]: Start isIncluded. First operand 21 states. Second operand has 20 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 14 states have internal predecessors, (17), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-14 20:23:25,451 INFO L87 Difference]: Start difference. First operand 21 states. Second operand has 20 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 14 states have internal predecessors, (17), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-14 20:23:25,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-14 20:23:25,453 INFO L93 Difference]: Finished difference Result 21 states and 24 transitions. [2022-04-14 20:23:25,453 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions. [2022-04-14 20:23:25,453 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-14 20:23:25,454 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-14 20:23:25,454 INFO L74 IsIncluded]: Start isIncluded. First operand has 20 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 14 states have internal predecessors, (17), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand 21 states. [2022-04-14 20:23:25,454 INFO L87 Difference]: Start difference. First operand has 20 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 14 states have internal predecessors, (17), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand 21 states. [2022-04-14 20:23:25,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-14 20:23:25,456 INFO L93 Difference]: Finished difference Result 21 states and 24 transitions. [2022-04-14 20:23:25,456 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions. [2022-04-14 20:23:25,456 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-14 20:23:25,456 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-14 20:23:25,456 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-14 20:23:25,456 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-14 20:23:25,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 14 states have internal predecessors, (17), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-14 20:23:25,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2022-04-14 20:23:25,458 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 12 [2022-04-14 20:23:25,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-14 20:23:25,459 INFO L478 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2022-04-14 20:23:25,459 INFO L479 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) [2022-04-14 20:23:25,459 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2022-04-14 20:23:25,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-04-14 20:23:25,459 INFO L491 BasicCegarLoop]: Found error trace [2022-04-14 20:23:25,459 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-14 20:23:25,459 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-14 20:23:25,460 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-14 20:23:25,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-14 20:23:25,460 INFO L85 PathProgramCache]: Analyzing trace with hash -467747580, now seen corresponding path program 1 times [2022-04-14 20:23:25,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-14 20:23:25,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724588619] [2022-04-14 20:23:25,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-14 20:23:25,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-14 20:23:25,472 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-14 20:23:25,473 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [812579646] [2022-04-14 20:23:25,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-14 20:23:25,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-14 20:23:25,473 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-14 20:23:25,484 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) [2022-04-14 20:23:25,485 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-04-14 20:23:25,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-14 20:23:25,527 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 13 conjunts are in the unsatisfiable core [2022-04-14 20:23:25,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-14 20:23:25,536 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-14 20:23:25,714 INFO L272 TraceCheckUtils]: 0: Hoare triple {124#true} [65] ULTIMATE.startENTRY-->ULTIMATE.initENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {124#true} is VALID [2022-04-14 20:23:25,714 INFO L290 TraceCheckUtils]: 1: Hoare triple {124#true} [67] ULTIMATE.initENTRY-->ULTIMATE.initFINAL: Formula: (let ((.cse0 (select |v_#memory_int_1| 1))) (and (= v_~counter~0_3 0) (= (select |v_#length_1| 2) 15) (= 48 (select .cse0 0)) (= (select |v_#valid_1| 2) 1) (= (select |v_#valid_1| 0) 0) (< 0 |v_#StackHeapBarrier_1|) (= |v_#NULL.base_1| 0) (= 1 (select |v_#valid_1| 3)) (= (select |v_#length_1| 3) 12) (= (select |v_#valid_1| 1) 1) (= 2 (select |v_#length_1| 1)) (= (select .cse0 1) 0) (= |v_#NULL.offset_1| 0))) InVars {#memory_int=|v_#memory_int_1|, #StackHeapBarrier=|v_#StackHeapBarrier_1|, #length=|v_#length_1|, #valid=|v_#valid_1|} OutVars{~counter~0=v_~counter~0_3, #StackHeapBarrier=|v_#StackHeapBarrier_1|, #valid=|v_#valid_1|, #memory_int=|v_#memory_int_1|, #NULL.offset=|v_#NULL.offset_1|, #length=|v_#length_1|, #NULL.base=|v_#NULL.base_1|} AuxVars[] AssignedVars[~counter~0, #NULL.offset, #NULL.base] {124#true} is VALID [2022-04-14 20:23:25,715 INFO L290 TraceCheckUtils]: 2: Hoare triple {124#true} [70] ULTIMATE.initFINAL-->ULTIMATE.initEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {124#true} is VALID [2022-04-14 20:23:25,715 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {124#true} {124#true} [91] ULTIMATE.initEXIT-->L-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {124#true} is VALID [2022-04-14 20:23:25,715 INFO L272 TraceCheckUtils]: 4: Hoare triple {124#true} [66] L-1-->mainENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {124#true} is VALID [2022-04-14 20:23:25,716 INFO L290 TraceCheckUtils]: 5: Hoare triple {124#true} [69] mainENTRY-->L31-3: Formula: (and (<= |v_main_#t~nondet5_2| 2147483647) (= v_main_~X~0_2 |v_main_#t~nondet4_2|) (= v_main_~Y~0_3 |v_main_#t~nondet5_2|) (= (+ (* v_main_~Y~0_3 2) (* (- 1) v_main_~X~0_2)) v_main_~v~0_2) (<= 0 (+ |v_main_#t~nondet4_2| 2147483648)) (= v_main_~x~0_4 0) (<= |v_main_#t~nondet4_2| 2147483647) (<= 0 (+ |v_main_#t~nondet5_2| 2147483648)) (= v_main_~y~0_3 0)) InVars {main_#t~nondet5=|v_main_#t~nondet5_2|, main_#t~nondet4=|v_main_#t~nondet4_2|} OutVars{main_~v~0=v_main_~v~0_2, main_~x~0=v_main_~x~0_4, main_~Y~0=v_main_~Y~0_3, main_~yx~0=v_main_~yx~0_3, main_~X~0=v_main_~X~0_2, main_~y~0=v_main_~y~0_3, main_~xy~0=v_main_~xy~0_3} AuxVars[] AssignedVars[main_#t~nondet5, main_#t~nondet4, main_~v~0, main_~x~0, main_~Y~0, main_~yx~0, main_~X~0, main_~y~0, main_~xy~0] {144#(and (= main_~x~0 0) (= (+ (* (- 1) main_~X~0) (* main_~Y~0 2)) main_~v~0) (= main_~y~0 0))} is VALID [2022-04-14 20:23:25,717 INFO L290 TraceCheckUtils]: 6: Hoare triple {144#(and (= main_~x~0 0) (= (+ (* (- 1) main_~X~0) (* main_~Y~0 2)) main_~v~0) (= main_~y~0 0))} [72] L31-3-->L31-1: Formula: (and (= |v_main_#t~post6_1| v_~counter~0_2) (= v_~counter~0_1 (+ |v_main_#t~post6_1| 1))) InVars {~counter~0=v_~counter~0_2} OutVars{~counter~0=v_~counter~0_1, main_#t~post6=|v_main_#t~post6_1|} AuxVars[] AssignedVars[~counter~0, main_#t~post6] {144#(and (= main_~x~0 0) (= (+ (* (- 1) main_~X~0) (* main_~Y~0 2)) main_~v~0) (= main_~y~0 0))} is VALID [2022-04-14 20:23:25,717 INFO L290 TraceCheckUtils]: 7: Hoare triple {144#(and (= main_~x~0 0) (= (+ (* (- 1) main_~X~0) (* main_~Y~0 2)) main_~v~0) (= main_~y~0 0))} [75] L31-1-->L34: Formula: (and (< |v_main_#t~post6_5| 1) (= v_main_~yx~0_4 (* v_main_~Y~0_6 v_main_~x~0_7)) (= v_main_~xy~0_4 (* v_main_~X~0_5 v_main_~y~0_6))) InVars {main_~y~0=v_main_~y~0_6, main_~x~0=v_main_~x~0_7, main_~Y~0=v_main_~Y~0_6, main_#t~post6=|v_main_#t~post6_5|, main_~X~0=v_main_~X~0_5} OutVars{main_~x~0=v_main_~x~0_7, main_~yx~0=v_main_~yx~0_4, main_~Y~0=v_main_~Y~0_6, main_~X~0=v_main_~X~0_5, main_~xy~0=v_main_~xy~0_4, main_~y~0=v_main_~y~0_6} AuxVars[] AssignedVars[main_~yx~0, main_~xy~0, main_#t~post6] {151#(and (= main_~xy~0 0) (= (+ (* (- 1) main_~X~0) (* main_~Y~0 2)) main_~v~0) (= main_~yx~0 0))} is VALID [2022-04-14 20:23:25,718 INFO L272 TraceCheckUtils]: 8: Hoare triple {151#(and (= main_~xy~0 0) (= (+ (* (- 1) main_~X~0) (* main_~Y~0 2)) main_~v~0) (= main_~yx~0 0))} [77] L34-->__VERIFIER_assertENTRY: Formula: (= (ite (= (+ (* (- 1) v_main_~X~0_10) (* (- 1) v_main_~v~0_10) (* v_main_~xy~0_6 (- 2)) (* 2 v_main_~Y~0_10) (* v_main_~yx~0_6 2)) 0) 1 0) |v___VERIFIER_assert_#in~condInParam_1|) InVars {main_~xy~0=v_main_~xy~0_6, main_~v~0=v_main_~v~0_10, main_~yx~0=v_main_~yx~0_6, main_~Y~0=v_main_~Y~0_10, main_~X~0=v_main_~X~0_10} OutVars{__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~condInParam_1|} AuxVars[] AssignedVars[__VERIFIER_assert_#in~cond, main_~v~0, main_~yx~0, main_~Y~0, main_~X~0, main_~xy~0] {155#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-14 20:23:25,719 INFO L290 TraceCheckUtils]: 9: Hoare triple {155#(<= 1 |__VERIFIER_assert_#in~cond|)} [79] __VERIFIER_assertENTRY-->L14: Formula: (= v___VERIFIER_assert_~cond_3 |v___VERIFIER_assert_#in~cond_1|) InVars {__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~cond_1|} OutVars{__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~cond_1|, __VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_3} AuxVars[] AssignedVars[__VERIFIER_assert_~cond] {159#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-14 20:23:25,719 INFO L290 TraceCheckUtils]: 10: Hoare triple {159#(<= 1 __VERIFIER_assert_~cond)} [83] L14-->L15: Formula: (= v___VERIFIER_assert_~cond_1 0) InVars {__VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_1} OutVars{__VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_1} AuxVars[] AssignedVars[] {125#false} is VALID [2022-04-14 20:23:25,720 INFO L290 TraceCheckUtils]: 11: Hoare triple {125#false} [87] L15-->__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {125#false} is VALID [2022-04-14 20:23:25,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-14 20:23:25,720 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-14 20:23:25,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-14 20:23:25,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724588619] [2022-04-14 20:23:25,721 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-14 20:23:25,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [812579646] [2022-04-14 20:23:25,724 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [812579646] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-14 20:23:25,724 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-14 20:23:25,724 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-14 20:23:25,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867911564] [2022-04-14 20:23:25,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-14 20:23:25,726 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 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 [2022-04-14 20:23:25,727 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-14 20:23:25,727 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 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) [2022-04-14 20:23:25,739 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 12 edges. 12 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-14 20:23:25,740 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-14 20:23:25,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-14 20:23:25,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-14 20:23:25,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-04-14 20:23:25,741 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 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) [2022-04-14 20:23:25,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-14 20:23:25,899 INFO L93 Difference]: Finished difference Result 32 states and 38 transitions. [2022-04-14 20:23:25,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-14 20:23:25,900 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 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 [2022-04-14 20:23:25,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-14 20:23:25,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 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) [2022-04-14 20:23:25,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 39 transitions. [2022-04-14 20:23:25,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 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) [2022-04-14 20:23:25,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 39 transitions. [2022-04-14 20:23:25,907 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 6 states and 39 transitions. [2022-04-14 20:23:25,936 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 39 edges. 39 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-14 20:23:25,938 INFO L225 Difference]: With dead ends: 32 [2022-04-14 20:23:25,938 INFO L226 Difference]: Without dead ends: 29 [2022-04-14 20:23:25,938 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-04-14 20:23:25,939 INFO L913 BasicCegarLoop]: 15 mSDtfsCounter, 12 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-14 20:23:25,939 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 64 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-14 20:23:25,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-04-14 20:23:25,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2022-04-14 20:23:25,942 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-14 20:23:25,942 INFO L82 GeneralOperation]: Start isEquivalent. First operand 29 states. Second operand has 28 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 20 states have internal predecessors, (23), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-14 20:23:25,943 INFO L74 IsIncluded]: Start isIncluded. First operand 29 states. Second operand has 28 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 20 states have internal predecessors, (23), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-14 20:23:25,943 INFO L87 Difference]: Start difference. First operand 29 states. Second operand has 28 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 20 states have internal predecessors, (23), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-14 20:23:25,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-14 20:23:25,944 INFO L93 Difference]: Finished difference Result 29 states and 33 transitions. [2022-04-14 20:23:25,945 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2022-04-14 20:23:25,945 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-14 20:23:25,945 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-14 20:23:25,945 INFO L74 IsIncluded]: Start isIncluded. First operand has 28 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 20 states have internal predecessors, (23), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand 29 states. [2022-04-14 20:23:25,945 INFO L87 Difference]: Start difference. First operand has 28 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 20 states have internal predecessors, (23), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand 29 states. [2022-04-14 20:23:25,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-14 20:23:25,947 INFO L93 Difference]: Finished difference Result 29 states and 33 transitions. [2022-04-14 20:23:25,947 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2022-04-14 20:23:25,947 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-14 20:23:25,947 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-14 20:23:25,948 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-14 20:23:25,948 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-14 20:23:25,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 20 states have internal predecessors, (23), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-14 20:23:25,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2022-04-14 20:23:25,949 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 12 [2022-04-14 20:23:25,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-14 20:23:25,949 INFO L478 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2022-04-14 20:23:25,949 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 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) [2022-04-14 20:23:25,950 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2022-04-14 20:23:25,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-04-14 20:23:25,950 INFO L491 BasicCegarLoop]: Found error trace [2022-04-14 20:23:25,950 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-14 20:23:25,970 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-04-14 20:23:26,168 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 [2022-04-14 20:23:26,168 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-14 20:23:26,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-14 20:23:26,169 INFO L85 PathProgramCache]: Analyzing trace with hash 1909475431, now seen corresponding path program 1 times [2022-04-14 20:23:26,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-14 20:23:26,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472741835] [2022-04-14 20:23:26,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-14 20:23:26,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-14 20:23:26,185 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-14 20:23:26,186 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1649341342] [2022-04-14 20:23:26,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-14 20:23:26,186 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-14 20:23:26,186 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-14 20:23:26,187 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) [2022-04-14 20:23:26,188 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-04-14 20:23:26,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-14 20:23:26,239 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 7 conjunts are in the unsatisfiable core [2022-04-14 20:23:26,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-14 20:23:26,248 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-14 20:23:26,402 INFO L272 TraceCheckUtils]: 0: Hoare triple {287#true} [65] ULTIMATE.startENTRY-->ULTIMATE.initENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {287#true} is VALID [2022-04-14 20:23:26,403 INFO L290 TraceCheckUtils]: 1: Hoare triple {287#true} [67] ULTIMATE.initENTRY-->ULTIMATE.initFINAL: Formula: (let ((.cse0 (select |v_#memory_int_1| 1))) (and (= v_~counter~0_3 0) (= (select |v_#length_1| 2) 15) (= 48 (select .cse0 0)) (= (select |v_#valid_1| 2) 1) (= (select |v_#valid_1| 0) 0) (< 0 |v_#StackHeapBarrier_1|) (= |v_#NULL.base_1| 0) (= 1 (select |v_#valid_1| 3)) (= (select |v_#length_1| 3) 12) (= (select |v_#valid_1| 1) 1) (= 2 (select |v_#length_1| 1)) (= (select .cse0 1) 0) (= |v_#NULL.offset_1| 0))) InVars {#memory_int=|v_#memory_int_1|, #StackHeapBarrier=|v_#StackHeapBarrier_1|, #length=|v_#length_1|, #valid=|v_#valid_1|} OutVars{~counter~0=v_~counter~0_3, #StackHeapBarrier=|v_#StackHeapBarrier_1|, #valid=|v_#valid_1|, #memory_int=|v_#memory_int_1|, #NULL.offset=|v_#NULL.offset_1|, #length=|v_#length_1|, #NULL.base=|v_#NULL.base_1|} AuxVars[] AssignedVars[~counter~0, #NULL.offset, #NULL.base] {295#(<= 0 ~counter~0)} is VALID [2022-04-14 20:23:26,403 INFO L290 TraceCheckUtils]: 2: Hoare triple {295#(<= 0 ~counter~0)} [70] ULTIMATE.initFINAL-->ULTIMATE.initEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {295#(<= 0 ~counter~0)} is VALID [2022-04-14 20:23:26,404 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {295#(<= 0 ~counter~0)} {287#true} [91] ULTIMATE.initEXIT-->L-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {295#(<= 0 ~counter~0)} is VALID [2022-04-14 20:23:26,404 INFO L272 TraceCheckUtils]: 4: Hoare triple {295#(<= 0 ~counter~0)} [66] L-1-->mainENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {295#(<= 0 ~counter~0)} is VALID [2022-04-14 20:23:26,405 INFO L290 TraceCheckUtils]: 5: Hoare triple {295#(<= 0 ~counter~0)} [69] mainENTRY-->L31-3: Formula: (and (<= |v_main_#t~nondet5_2| 2147483647) (= v_main_~X~0_2 |v_main_#t~nondet4_2|) (= v_main_~Y~0_3 |v_main_#t~nondet5_2|) (= (+ (* v_main_~Y~0_3 2) (* (- 1) v_main_~X~0_2)) v_main_~v~0_2) (<= 0 (+ |v_main_#t~nondet4_2| 2147483648)) (= v_main_~x~0_4 0) (<= |v_main_#t~nondet4_2| 2147483647) (<= 0 (+ |v_main_#t~nondet5_2| 2147483648)) (= v_main_~y~0_3 0)) InVars {main_#t~nondet5=|v_main_#t~nondet5_2|, main_#t~nondet4=|v_main_#t~nondet4_2|} OutVars{main_~v~0=v_main_~v~0_2, main_~x~0=v_main_~x~0_4, main_~Y~0=v_main_~Y~0_3, main_~yx~0=v_main_~yx~0_3, main_~X~0=v_main_~X~0_2, main_~y~0=v_main_~y~0_3, main_~xy~0=v_main_~xy~0_3} AuxVars[] AssignedVars[main_#t~nondet5, main_#t~nondet4, main_~v~0, main_~x~0, main_~Y~0, main_~yx~0, main_~X~0, main_~y~0, main_~xy~0] {295#(<= 0 ~counter~0)} is VALID [2022-04-14 20:23:26,405 INFO L290 TraceCheckUtils]: 6: Hoare triple {295#(<= 0 ~counter~0)} [72] L31-3-->L31-1: Formula: (and (= |v_main_#t~post6_1| v_~counter~0_2) (= v_~counter~0_1 (+ |v_main_#t~post6_1| 1))) InVars {~counter~0=v_~counter~0_2} OutVars{~counter~0=v_~counter~0_1, main_#t~post6=|v_main_#t~post6_1|} AuxVars[] AssignedVars[~counter~0, main_#t~post6] {311#(<= 1 ~counter~0)} is VALID [2022-04-14 20:23:26,406 INFO L290 TraceCheckUtils]: 7: Hoare triple {311#(<= 1 ~counter~0)} [75] L31-1-->L34: Formula: (and (< |v_main_#t~post6_5| 1) (= v_main_~yx~0_4 (* v_main_~Y~0_6 v_main_~x~0_7)) (= v_main_~xy~0_4 (* v_main_~X~0_5 v_main_~y~0_6))) InVars {main_~y~0=v_main_~y~0_6, main_~x~0=v_main_~x~0_7, main_~Y~0=v_main_~Y~0_6, main_#t~post6=|v_main_#t~post6_5|, main_~X~0=v_main_~X~0_5} OutVars{main_~x~0=v_main_~x~0_7, main_~yx~0=v_main_~yx~0_4, main_~Y~0=v_main_~Y~0_6, main_~X~0=v_main_~X~0_5, main_~xy~0=v_main_~xy~0_4, main_~y~0=v_main_~y~0_6} AuxVars[] AssignedVars[main_~yx~0, main_~xy~0, main_#t~post6] {311#(<= 1 ~counter~0)} is VALID [2022-04-14 20:23:26,407 INFO L272 TraceCheckUtils]: 8: Hoare triple {311#(<= 1 ~counter~0)} [77] L34-->__VERIFIER_assertENTRY: Formula: (= (ite (= (+ (* (- 1) v_main_~X~0_10) (* (- 1) v_main_~v~0_10) (* v_main_~xy~0_6 (- 2)) (* 2 v_main_~Y~0_10) (* v_main_~yx~0_6 2)) 0) 1 0) |v___VERIFIER_assert_#in~condInParam_1|) InVars {main_~xy~0=v_main_~xy~0_6, main_~v~0=v_main_~v~0_10, main_~yx~0=v_main_~yx~0_6, main_~Y~0=v_main_~Y~0_10, main_~X~0=v_main_~X~0_10} OutVars{__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~condInParam_1|} AuxVars[] AssignedVars[__VERIFIER_assert_#in~cond, main_~v~0, main_~yx~0, main_~Y~0, main_~X~0, main_~xy~0] {311#(<= 1 ~counter~0)} is VALID [2022-04-14 20:23:26,407 INFO L290 TraceCheckUtils]: 9: Hoare triple {311#(<= 1 ~counter~0)} [79] __VERIFIER_assertENTRY-->L14: Formula: (= v___VERIFIER_assert_~cond_3 |v___VERIFIER_assert_#in~cond_1|) InVars {__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~cond_1|} OutVars{__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~cond_1|, __VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_3} AuxVars[] AssignedVars[__VERIFIER_assert_~cond] {311#(<= 1 ~counter~0)} is VALID [2022-04-14 20:23:26,410 INFO L290 TraceCheckUtils]: 10: Hoare triple {311#(<= 1 ~counter~0)} [84] L14-->L14-2: Formula: (not (= v___VERIFIER_assert_~cond_2 0)) InVars {__VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_2} OutVars{__VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_2} AuxVars[] AssignedVars[] {311#(<= 1 ~counter~0)} is VALID [2022-04-14 20:23:26,410 INFO L290 TraceCheckUtils]: 11: Hoare triple {311#(<= 1 ~counter~0)} [89] L14-2-->__VERIFIER_assertEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {311#(<= 1 ~counter~0)} is VALID [2022-04-14 20:23:26,415 INFO L284 TraceCheckUtils]: 12: Hoare quadruple {311#(<= 1 ~counter~0)} {311#(<= 1 ~counter~0)} [93] __VERIFIER_assertEXIT-->L34-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: (= (ite (= (+ (* (- 1) v_main_~X~0_10) (* (- 1) v_main_~v~0_10) (* v_main_~xy~0_6 (- 2)) (* 2 v_main_~Y~0_10) (* v_main_~yx~0_6 2)) 0) 1 0) |v___VERIFIER_assert_#in~condInParam_1|) InVars {main_~xy~0=v_main_~xy~0_6, main_~v~0=v_main_~v~0_10, main_~yx~0=v_main_~yx~0_6, main_~Y~0=v_main_~Y~0_10, main_~X~0=v_main_~X~0_10} OutVars{__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~condInParam_1|} AuxVars[] AssignedVars[__VERIFIER_assert_#in~cond, main_~v~0, main_~yx~0, main_~Y~0, main_~X~0, main_~xy~0] {311#(<= 1 ~counter~0)} is VALID [2022-04-14 20:23:26,416 INFO L290 TraceCheckUtils]: 13: Hoare triple {311#(<= 1 ~counter~0)} [81] L34-1-->L39: Formula: (<= v_main_~x~0_9 v_main_~X~0_8) InVars {main_~x~0=v_main_~x~0_9, main_~X~0=v_main_~X~0_8} OutVars{main_~x~0=v_main_~x~0_9, main_~X~0=v_main_~X~0_8} AuxVars[] AssignedVars[] {311#(<= 1 ~counter~0)} is VALID [2022-04-14 20:23:26,417 INFO L290 TraceCheckUtils]: 14: Hoare triple {311#(<= 1 ~counter~0)} [85] L39-->L39-2: Formula: (and (= v_main_~v~0_6 (+ v_main_~v~0_7 (* v_main_~Y~0_8 2))) (< v_main_~v~0_7 0)) InVars {main_~v~0=v_main_~v~0_7, main_~Y~0=v_main_~Y~0_8} OutVars{main_~v~0=v_main_~v~0_6, main_~Y~0=v_main_~Y~0_8} AuxVars[] AssignedVars[main_~v~0] {311#(<= 1 ~counter~0)} is VALID [2022-04-14 20:23:26,418 INFO L290 TraceCheckUtils]: 15: Hoare triple {311#(<= 1 ~counter~0)} [90] L39-2-->L31-3: Formula: (= v_main_~x~0_1 (+ v_main_~x~0_2 1)) InVars {main_~x~0=v_main_~x~0_2} OutVars{main_~x~0=v_main_~x~0_1, main_#t~post8=|v_main_#t~post8_1|} AuxVars[] AssignedVars[main_~x~0, main_#t~post8] {311#(<= 1 ~counter~0)} is VALID [2022-04-14 20:23:26,418 INFO L290 TraceCheckUtils]: 16: Hoare triple {311#(<= 1 ~counter~0)} [72] L31-3-->L31-1: Formula: (and (= |v_main_#t~post6_1| v_~counter~0_2) (= v_~counter~0_1 (+ |v_main_#t~post6_1| 1))) InVars {~counter~0=v_~counter~0_2} OutVars{~counter~0=v_~counter~0_1, main_#t~post6=|v_main_#t~post6_1|} AuxVars[] AssignedVars[~counter~0, main_#t~post6] {342#(<= 1 |main_#t~post6|)} is VALID [2022-04-14 20:23:26,419 INFO L290 TraceCheckUtils]: 17: Hoare triple {342#(<= 1 |main_#t~post6|)} [75] L31-1-->L34: Formula: (and (< |v_main_#t~post6_5| 1) (= v_main_~yx~0_4 (* v_main_~Y~0_6 v_main_~x~0_7)) (= v_main_~xy~0_4 (* v_main_~X~0_5 v_main_~y~0_6))) InVars {main_~y~0=v_main_~y~0_6, main_~x~0=v_main_~x~0_7, main_~Y~0=v_main_~Y~0_6, main_#t~post6=|v_main_#t~post6_5|, main_~X~0=v_main_~X~0_5} OutVars{main_~x~0=v_main_~x~0_7, main_~yx~0=v_main_~yx~0_4, main_~Y~0=v_main_~Y~0_6, main_~X~0=v_main_~X~0_5, main_~xy~0=v_main_~xy~0_4, main_~y~0=v_main_~y~0_6} AuxVars[] AssignedVars[main_~yx~0, main_~xy~0, main_#t~post6] {288#false} is VALID [2022-04-14 20:23:26,419 INFO L272 TraceCheckUtils]: 18: Hoare triple {288#false} [77] L34-->__VERIFIER_assertENTRY: Formula: (= (ite (= (+ (* (- 1) v_main_~X~0_10) (* (- 1) v_main_~v~0_10) (* v_main_~xy~0_6 (- 2)) (* 2 v_main_~Y~0_10) (* v_main_~yx~0_6 2)) 0) 1 0) |v___VERIFIER_assert_#in~condInParam_1|) InVars {main_~xy~0=v_main_~xy~0_6, main_~v~0=v_main_~v~0_10, main_~yx~0=v_main_~yx~0_6, main_~Y~0=v_main_~Y~0_10, main_~X~0=v_main_~X~0_10} OutVars{__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~condInParam_1|} AuxVars[] AssignedVars[__VERIFIER_assert_#in~cond, main_~v~0, main_~yx~0, main_~Y~0, main_~X~0, main_~xy~0] {288#false} is VALID [2022-04-14 20:23:26,419 INFO L290 TraceCheckUtils]: 19: Hoare triple {288#false} [79] __VERIFIER_assertENTRY-->L14: Formula: (= v___VERIFIER_assert_~cond_3 |v___VERIFIER_assert_#in~cond_1|) InVars {__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~cond_1|} OutVars{__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~cond_1|, __VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_3} AuxVars[] AssignedVars[__VERIFIER_assert_~cond] {288#false} is VALID [2022-04-14 20:23:26,419 INFO L290 TraceCheckUtils]: 20: Hoare triple {288#false} [83] L14-->L15: Formula: (= v___VERIFIER_assert_~cond_1 0) InVars {__VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_1} OutVars{__VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_1} AuxVars[] AssignedVars[] {288#false} is VALID [2022-04-14 20:23:26,419 INFO L290 TraceCheckUtils]: 21: Hoare triple {288#false} [87] L15-->__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {288#false} is VALID [2022-04-14 20:23:26,420 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-14 20:23:26,420 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-14 20:23:26,557 INFO L290 TraceCheckUtils]: 21: Hoare triple {288#false} [87] L15-->__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {288#false} is VALID [2022-04-14 20:23:26,557 INFO L290 TraceCheckUtils]: 20: Hoare triple {288#false} [83] L14-->L15: Formula: (= v___VERIFIER_assert_~cond_1 0) InVars {__VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_1} OutVars{__VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_1} AuxVars[] AssignedVars[] {288#false} is VALID [2022-04-14 20:23:26,557 INFO L290 TraceCheckUtils]: 19: Hoare triple {288#false} [79] __VERIFIER_assertENTRY-->L14: Formula: (= v___VERIFIER_assert_~cond_3 |v___VERIFIER_assert_#in~cond_1|) InVars {__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~cond_1|} OutVars{__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~cond_1|, __VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_3} AuxVars[] AssignedVars[__VERIFIER_assert_~cond] {288#false} is VALID [2022-04-14 20:23:26,558 INFO L272 TraceCheckUtils]: 18: Hoare triple {288#false} [77] L34-->__VERIFIER_assertENTRY: Formula: (= (ite (= (+ (* (- 1) v_main_~X~0_10) (* (- 1) v_main_~v~0_10) (* v_main_~xy~0_6 (- 2)) (* 2 v_main_~Y~0_10) (* v_main_~yx~0_6 2)) 0) 1 0) |v___VERIFIER_assert_#in~condInParam_1|) InVars {main_~xy~0=v_main_~xy~0_6, main_~v~0=v_main_~v~0_10, main_~yx~0=v_main_~yx~0_6, main_~Y~0=v_main_~Y~0_10, main_~X~0=v_main_~X~0_10} OutVars{__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~condInParam_1|} AuxVars[] AssignedVars[__VERIFIER_assert_#in~cond, main_~v~0, main_~yx~0, main_~Y~0, main_~X~0, main_~xy~0] {288#false} is VALID [2022-04-14 20:23:26,558 INFO L290 TraceCheckUtils]: 17: Hoare triple {342#(<= 1 |main_#t~post6|)} [75] L31-1-->L34: Formula: (and (< |v_main_#t~post6_5| 1) (= v_main_~yx~0_4 (* v_main_~Y~0_6 v_main_~x~0_7)) (= v_main_~xy~0_4 (* v_main_~X~0_5 v_main_~y~0_6))) InVars {main_~y~0=v_main_~y~0_6, main_~x~0=v_main_~x~0_7, main_~Y~0=v_main_~Y~0_6, main_#t~post6=|v_main_#t~post6_5|, main_~X~0=v_main_~X~0_5} OutVars{main_~x~0=v_main_~x~0_7, main_~yx~0=v_main_~yx~0_4, main_~Y~0=v_main_~Y~0_6, main_~X~0=v_main_~X~0_5, main_~xy~0=v_main_~xy~0_4, main_~y~0=v_main_~y~0_6} AuxVars[] AssignedVars[main_~yx~0, main_~xy~0, main_#t~post6] {288#false} is VALID [2022-04-14 20:23:26,559 INFO L290 TraceCheckUtils]: 16: Hoare triple {311#(<= 1 ~counter~0)} [72] L31-3-->L31-1: Formula: (and (= |v_main_#t~post6_1| v_~counter~0_2) (= v_~counter~0_1 (+ |v_main_#t~post6_1| 1))) InVars {~counter~0=v_~counter~0_2} OutVars{~counter~0=v_~counter~0_1, main_#t~post6=|v_main_#t~post6_1|} AuxVars[] AssignedVars[~counter~0, main_#t~post6] {342#(<= 1 |main_#t~post6|)} is VALID [2022-04-14 20:23:26,560 INFO L290 TraceCheckUtils]: 15: Hoare triple {311#(<= 1 ~counter~0)} [90] L39-2-->L31-3: Formula: (= v_main_~x~0_1 (+ v_main_~x~0_2 1)) InVars {main_~x~0=v_main_~x~0_2} OutVars{main_~x~0=v_main_~x~0_1, main_#t~post8=|v_main_#t~post8_1|} AuxVars[] AssignedVars[main_~x~0, main_#t~post8] {311#(<= 1 ~counter~0)} is VALID [2022-04-14 20:23:26,561 INFO L290 TraceCheckUtils]: 14: Hoare triple {311#(<= 1 ~counter~0)} [85] L39-->L39-2: Formula: (and (= v_main_~v~0_6 (+ v_main_~v~0_7 (* v_main_~Y~0_8 2))) (< v_main_~v~0_7 0)) InVars {main_~v~0=v_main_~v~0_7, main_~Y~0=v_main_~Y~0_8} OutVars{main_~v~0=v_main_~v~0_6, main_~Y~0=v_main_~Y~0_8} AuxVars[] AssignedVars[main_~v~0] {311#(<= 1 ~counter~0)} is VALID [2022-04-14 20:23:26,561 INFO L290 TraceCheckUtils]: 13: Hoare triple {311#(<= 1 ~counter~0)} [81] L34-1-->L39: Formula: (<= v_main_~x~0_9 v_main_~X~0_8) InVars {main_~x~0=v_main_~x~0_9, main_~X~0=v_main_~X~0_8} OutVars{main_~x~0=v_main_~x~0_9, main_~X~0=v_main_~X~0_8} AuxVars[] AssignedVars[] {311#(<= 1 ~counter~0)} is VALID [2022-04-14 20:23:26,562 INFO L284 TraceCheckUtils]: 12: Hoare quadruple {287#true} {311#(<= 1 ~counter~0)} [93] __VERIFIER_assertEXIT-->L34-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: (= (ite (= (+ (* (- 1) v_main_~X~0_10) (* (- 1) v_main_~v~0_10) (* v_main_~xy~0_6 (- 2)) (* 2 v_main_~Y~0_10) (* v_main_~yx~0_6 2)) 0) 1 0) |v___VERIFIER_assert_#in~condInParam_1|) InVars {main_~xy~0=v_main_~xy~0_6, main_~v~0=v_main_~v~0_10, main_~yx~0=v_main_~yx~0_6, main_~Y~0=v_main_~Y~0_10, main_~X~0=v_main_~X~0_10} OutVars{__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~condInParam_1|} AuxVars[] AssignedVars[__VERIFIER_assert_#in~cond, main_~v~0, main_~yx~0, main_~Y~0, main_~X~0, main_~xy~0] {311#(<= 1 ~counter~0)} is VALID [2022-04-14 20:23:26,562 INFO L290 TraceCheckUtils]: 11: Hoare triple {287#true} [89] L14-2-->__VERIFIER_assertEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {287#true} is VALID [2022-04-14 20:23:26,562 INFO L290 TraceCheckUtils]: 10: Hoare triple {287#true} [84] L14-->L14-2: Formula: (not (= v___VERIFIER_assert_~cond_2 0)) InVars {__VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_2} OutVars{__VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_2} AuxVars[] AssignedVars[] {287#true} is VALID [2022-04-14 20:23:26,562 INFO L290 TraceCheckUtils]: 9: Hoare triple {287#true} [79] __VERIFIER_assertENTRY-->L14: Formula: (= v___VERIFIER_assert_~cond_3 |v___VERIFIER_assert_#in~cond_1|) InVars {__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~cond_1|} OutVars{__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~cond_1|, __VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_3} AuxVars[] AssignedVars[__VERIFIER_assert_~cond] {287#true} is VALID [2022-04-14 20:23:26,563 INFO L272 TraceCheckUtils]: 8: Hoare triple {311#(<= 1 ~counter~0)} [77] L34-->__VERIFIER_assertENTRY: Formula: (= (ite (= (+ (* (- 1) v_main_~X~0_10) (* (- 1) v_main_~v~0_10) (* v_main_~xy~0_6 (- 2)) (* 2 v_main_~Y~0_10) (* v_main_~yx~0_6 2)) 0) 1 0) |v___VERIFIER_assert_#in~condInParam_1|) InVars {main_~xy~0=v_main_~xy~0_6, main_~v~0=v_main_~v~0_10, main_~yx~0=v_main_~yx~0_6, main_~Y~0=v_main_~Y~0_10, main_~X~0=v_main_~X~0_10} OutVars{__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~condInParam_1|} AuxVars[] AssignedVars[__VERIFIER_assert_#in~cond, main_~v~0, main_~yx~0, main_~Y~0, main_~X~0, main_~xy~0] {287#true} is VALID [2022-04-14 20:23:26,563 INFO L290 TraceCheckUtils]: 7: Hoare triple {311#(<= 1 ~counter~0)} [75] L31-1-->L34: Formula: (and (< |v_main_#t~post6_5| 1) (= v_main_~yx~0_4 (* v_main_~Y~0_6 v_main_~x~0_7)) (= v_main_~xy~0_4 (* v_main_~X~0_5 v_main_~y~0_6))) InVars {main_~y~0=v_main_~y~0_6, main_~x~0=v_main_~x~0_7, main_~Y~0=v_main_~Y~0_6, main_#t~post6=|v_main_#t~post6_5|, main_~X~0=v_main_~X~0_5} OutVars{main_~x~0=v_main_~x~0_7, main_~yx~0=v_main_~yx~0_4, main_~Y~0=v_main_~Y~0_6, main_~X~0=v_main_~X~0_5, main_~xy~0=v_main_~xy~0_4, main_~y~0=v_main_~y~0_6} AuxVars[] AssignedVars[main_~yx~0, main_~xy~0, main_#t~post6] {311#(<= 1 ~counter~0)} is VALID [2022-04-14 20:23:26,564 INFO L290 TraceCheckUtils]: 6: Hoare triple {295#(<= 0 ~counter~0)} [72] L31-3-->L31-1: Formula: (and (= |v_main_#t~post6_1| v_~counter~0_2) (= v_~counter~0_1 (+ |v_main_#t~post6_1| 1))) InVars {~counter~0=v_~counter~0_2} OutVars{~counter~0=v_~counter~0_1, main_#t~post6=|v_main_#t~post6_1|} AuxVars[] AssignedVars[~counter~0, main_#t~post6] {311#(<= 1 ~counter~0)} is VALID [2022-04-14 20:23:26,564 INFO L290 TraceCheckUtils]: 5: Hoare triple {295#(<= 0 ~counter~0)} [69] mainENTRY-->L31-3: Formula: (and (<= |v_main_#t~nondet5_2| 2147483647) (= v_main_~X~0_2 |v_main_#t~nondet4_2|) (= v_main_~Y~0_3 |v_main_#t~nondet5_2|) (= (+ (* v_main_~Y~0_3 2) (* (- 1) v_main_~X~0_2)) v_main_~v~0_2) (<= 0 (+ |v_main_#t~nondet4_2| 2147483648)) (= v_main_~x~0_4 0) (<= |v_main_#t~nondet4_2| 2147483647) (<= 0 (+ |v_main_#t~nondet5_2| 2147483648)) (= v_main_~y~0_3 0)) InVars {main_#t~nondet5=|v_main_#t~nondet5_2|, main_#t~nondet4=|v_main_#t~nondet4_2|} OutVars{main_~v~0=v_main_~v~0_2, main_~x~0=v_main_~x~0_4, main_~Y~0=v_main_~Y~0_3, main_~yx~0=v_main_~yx~0_3, main_~X~0=v_main_~X~0_2, main_~y~0=v_main_~y~0_3, main_~xy~0=v_main_~xy~0_3} AuxVars[] AssignedVars[main_#t~nondet5, main_#t~nondet4, main_~v~0, main_~x~0, main_~Y~0, main_~yx~0, main_~X~0, main_~y~0, main_~xy~0] {295#(<= 0 ~counter~0)} is VALID [2022-04-14 20:23:26,565 INFO L272 TraceCheckUtils]: 4: Hoare triple {295#(<= 0 ~counter~0)} [66] L-1-->mainENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {295#(<= 0 ~counter~0)} is VALID [2022-04-14 20:23:26,565 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {295#(<= 0 ~counter~0)} {287#true} [91] ULTIMATE.initEXIT-->L-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {295#(<= 0 ~counter~0)} is VALID [2022-04-14 20:23:26,566 INFO L290 TraceCheckUtils]: 2: Hoare triple {295#(<= 0 ~counter~0)} [70] ULTIMATE.initFINAL-->ULTIMATE.initEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {295#(<= 0 ~counter~0)} is VALID [2022-04-14 20:23:26,566 INFO L290 TraceCheckUtils]: 1: Hoare triple {287#true} [67] ULTIMATE.initENTRY-->ULTIMATE.initFINAL: Formula: (let ((.cse0 (select |v_#memory_int_1| 1))) (and (= v_~counter~0_3 0) (= (select |v_#length_1| 2) 15) (= 48 (select .cse0 0)) (= (select |v_#valid_1| 2) 1) (= (select |v_#valid_1| 0) 0) (< 0 |v_#StackHeapBarrier_1|) (= |v_#NULL.base_1| 0) (= 1 (select |v_#valid_1| 3)) (= (select |v_#length_1| 3) 12) (= (select |v_#valid_1| 1) 1) (= 2 (select |v_#length_1| 1)) (= (select .cse0 1) 0) (= |v_#NULL.offset_1| 0))) InVars {#memory_int=|v_#memory_int_1|, #StackHeapBarrier=|v_#StackHeapBarrier_1|, #length=|v_#length_1|, #valid=|v_#valid_1|} OutVars{~counter~0=v_~counter~0_3, #StackHeapBarrier=|v_#StackHeapBarrier_1|, #valid=|v_#valid_1|, #memory_int=|v_#memory_int_1|, #NULL.offset=|v_#NULL.offset_1|, #length=|v_#length_1|, #NULL.base=|v_#NULL.base_1|} AuxVars[] AssignedVars[~counter~0, #NULL.offset, #NULL.base] {295#(<= 0 ~counter~0)} is VALID [2022-04-14 20:23:26,566 INFO L272 TraceCheckUtils]: 0: Hoare triple {287#true} [65] ULTIMATE.startENTRY-->ULTIMATE.initENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {287#true} is VALID [2022-04-14 20:23:26,567 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-14 20:23:26,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-14 20:23:26,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472741835] [2022-04-14 20:23:26,568 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-14 20:23:26,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1649341342] [2022-04-14 20:23:26,569 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1649341342] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-14 20:23:26,569 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-14 20:23:26,569 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2022-04-14 20:23:26,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071452113] [2022-04-14 20:23:26,569 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-04-14 20:23:26,570 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 4 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 22 [2022-04-14 20:23:26,570 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-14 20:23:26,570 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 4 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-04-14 20:23:26,588 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 27 edges. 27 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-14 20:23:26,588 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-14 20:23:26,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-14 20:23:26,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-14 20:23:26,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-04-14 20:23:26,589 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 4 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-04-14 20:23:26,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-14 20:23:26,639 INFO L93 Difference]: Finished difference Result 26 states and 26 transitions. [2022-04-14 20:23:26,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-04-14 20:23:26,640 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 4 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 22 [2022-04-14 20:23:26,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-14 20:23:26,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 4 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-04-14 20:23:26,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 24 transitions. [2022-04-14 20:23:26,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 4 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-04-14 20:23:26,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 24 transitions. [2022-04-14 20:23:26,646 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 5 states and 24 transitions. [2022-04-14 20:23:26,662 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 24 edges. 24 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-14 20:23:26,663 INFO L225 Difference]: With dead ends: 26 [2022-04-14 20:23:26,663 INFO L226 Difference]: Without dead ends: 24 [2022-04-14 20:23:26,663 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-04-14 20:23:26,665 INFO L913 BasicCegarLoop]: 20 mSDtfsCounter, 16 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-14 20:23:26,666 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 42 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-14 20:23:26,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-04-14 20:23:26,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2022-04-14 20:23:26,670 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-14 20:23:26,670 INFO L82 GeneralOperation]: Start isEquivalent. First operand 24 states. Second operand has 24 states, 17 states have (on average 1.0588235294117647) internal successors, (18), 17 states have internal predecessors, (18), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-14 20:23:26,670 INFO L74 IsIncluded]: Start isIncluded. First operand 24 states. Second operand has 24 states, 17 states have (on average 1.0588235294117647) internal successors, (18), 17 states have internal predecessors, (18), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-14 20:23:26,670 INFO L87 Difference]: Start difference. First operand 24 states. Second operand has 24 states, 17 states have (on average 1.0588235294117647) internal successors, (18), 17 states have internal predecessors, (18), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-14 20:23:26,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-14 20:23:26,671 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2022-04-14 20:23:26,671 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2022-04-14 20:23:26,672 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-14 20:23:26,672 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-14 20:23:26,673 INFO L74 IsIncluded]: Start isIncluded. First operand has 24 states, 17 states have (on average 1.0588235294117647) internal successors, (18), 17 states have internal predecessors, (18), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand 24 states. [2022-04-14 20:23:26,673 INFO L87 Difference]: Start difference. First operand has 24 states, 17 states have (on average 1.0588235294117647) internal successors, (18), 17 states have internal predecessors, (18), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand 24 states. [2022-04-14 20:23:26,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-14 20:23:26,675 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2022-04-14 20:23:26,675 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2022-04-14 20:23:26,676 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-14 20:23:26,676 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-14 20:23:26,676 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-14 20:23:26,676 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-14 20:23:26,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 17 states have (on average 1.0588235294117647) internal successors, (18), 17 states have internal predecessors, (18), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-14 20:23:26,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2022-04-14 20:23:26,680 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 22 [2022-04-14 20:23:26,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-14 20:23:26,680 INFO L478 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2022-04-14 20:23:26,680 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 4 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-04-14 20:23:26,680 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2022-04-14 20:23:26,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-04-14 20:23:26,681 INFO L491 BasicCegarLoop]: Found error trace [2022-04-14 20:23:26,681 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-14 20:23:26,699 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-04-14 20:23:26,895 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-04-14 20:23:26,895 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-14 20:23:26,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-14 20:23:26,896 INFO L85 PathProgramCache]: Analyzing trace with hash -968220272, now seen corresponding path program 1 times [2022-04-14 20:23:26,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-14 20:23:26,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944332838] [2022-04-14 20:23:26,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-14 20:23:26,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-14 20:23:26,908 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-14 20:23:26,909 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1650743351] [2022-04-14 20:23:26,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-14 20:23:26,909 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-14 20:23:26,909 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-14 20:23:26,910 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-14 20:23:26,928 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-04-14 20:23:26,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-14 20:23:26,971 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 17 conjunts are in the unsatisfiable core [2022-04-14 20:23:26,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-14 20:23:26,979 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-14 20:23:27,158 INFO L272 TraceCheckUtils]: 0: Hoare triple {523#true} [65] ULTIMATE.startENTRY-->ULTIMATE.initENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {523#true} is VALID [2022-04-14 20:23:27,159 INFO L290 TraceCheckUtils]: 1: Hoare triple {523#true} [67] ULTIMATE.initENTRY-->ULTIMATE.initFINAL: Formula: (let ((.cse0 (select |v_#memory_int_1| 1))) (and (= v_~counter~0_3 0) (= (select |v_#length_1| 2) 15) (= 48 (select .cse0 0)) (= (select |v_#valid_1| 2) 1) (= (select |v_#valid_1| 0) 0) (< 0 |v_#StackHeapBarrier_1|) (= |v_#NULL.base_1| 0) (= 1 (select |v_#valid_1| 3)) (= (select |v_#length_1| 3) 12) (= (select |v_#valid_1| 1) 1) (= 2 (select |v_#length_1| 1)) (= (select .cse0 1) 0) (= |v_#NULL.offset_1| 0))) InVars {#memory_int=|v_#memory_int_1|, #StackHeapBarrier=|v_#StackHeapBarrier_1|, #length=|v_#length_1|, #valid=|v_#valid_1|} OutVars{~counter~0=v_~counter~0_3, #StackHeapBarrier=|v_#StackHeapBarrier_1|, #valid=|v_#valid_1|, #memory_int=|v_#memory_int_1|, #NULL.offset=|v_#NULL.offset_1|, #length=|v_#length_1|, #NULL.base=|v_#NULL.base_1|} AuxVars[] AssignedVars[~counter~0, #NULL.offset, #NULL.base] {523#true} is VALID [2022-04-14 20:23:27,159 INFO L290 TraceCheckUtils]: 2: Hoare triple {523#true} [70] ULTIMATE.initFINAL-->ULTIMATE.initEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {523#true} is VALID [2022-04-14 20:23:27,159 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {523#true} {523#true} [91] ULTIMATE.initEXIT-->L-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {523#true} is VALID [2022-04-14 20:23:27,160 INFO L272 TraceCheckUtils]: 4: Hoare triple {523#true} [66] L-1-->mainENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {523#true} is VALID [2022-04-14 20:23:27,160 INFO L290 TraceCheckUtils]: 5: Hoare triple {523#true} [69] mainENTRY-->L31-3: Formula: (and (<= |v_main_#t~nondet5_2| 2147483647) (= v_main_~X~0_2 |v_main_#t~nondet4_2|) (= v_main_~Y~0_3 |v_main_#t~nondet5_2|) (= (+ (* v_main_~Y~0_3 2) (* (- 1) v_main_~X~0_2)) v_main_~v~0_2) (<= 0 (+ |v_main_#t~nondet4_2| 2147483648)) (= v_main_~x~0_4 0) (<= |v_main_#t~nondet4_2| 2147483647) (<= 0 (+ |v_main_#t~nondet5_2| 2147483648)) (= v_main_~y~0_3 0)) InVars {main_#t~nondet5=|v_main_#t~nondet5_2|, main_#t~nondet4=|v_main_#t~nondet4_2|} OutVars{main_~v~0=v_main_~v~0_2, main_~x~0=v_main_~x~0_4, main_~Y~0=v_main_~Y~0_3, main_~yx~0=v_main_~yx~0_3, main_~X~0=v_main_~X~0_2, main_~y~0=v_main_~y~0_3, main_~xy~0=v_main_~xy~0_3} AuxVars[] AssignedVars[main_#t~nondet5, main_#t~nondet4, main_~v~0, main_~x~0, main_~Y~0, main_~yx~0, main_~X~0, main_~y~0, main_~xy~0] {543#(and (= main_~x~0 0) (= (+ (* (- 1) main_~X~0) (* main_~Y~0 2)) main_~v~0) (= main_~y~0 0))} is VALID [2022-04-14 20:23:27,162 INFO L290 TraceCheckUtils]: 6: Hoare triple {543#(and (= main_~x~0 0) (= (+ (* (- 1) main_~X~0) (* main_~Y~0 2)) main_~v~0) (= main_~y~0 0))} [72] L31-3-->L31-1: Formula: (and (= |v_main_#t~post6_1| v_~counter~0_2) (= v_~counter~0_1 (+ |v_main_#t~post6_1| 1))) InVars {~counter~0=v_~counter~0_2} OutVars{~counter~0=v_~counter~0_1, main_#t~post6=|v_main_#t~post6_1|} AuxVars[] AssignedVars[~counter~0, main_#t~post6] {543#(and (= main_~x~0 0) (= (+ (* (- 1) main_~X~0) (* main_~Y~0 2)) main_~v~0) (= main_~y~0 0))} is VALID [2022-04-14 20:23:27,163 INFO L290 TraceCheckUtils]: 7: Hoare triple {543#(and (= main_~x~0 0) (= (+ (* (- 1) main_~X~0) (* main_~Y~0 2)) main_~v~0) (= main_~y~0 0))} [75] L31-1-->L34: Formula: (and (< |v_main_#t~post6_5| 1) (= v_main_~yx~0_4 (* v_main_~Y~0_6 v_main_~x~0_7)) (= v_main_~xy~0_4 (* v_main_~X~0_5 v_main_~y~0_6))) InVars {main_~y~0=v_main_~y~0_6, main_~x~0=v_main_~x~0_7, main_~Y~0=v_main_~Y~0_6, main_#t~post6=|v_main_#t~post6_5|, main_~X~0=v_main_~X~0_5} OutVars{main_~x~0=v_main_~x~0_7, main_~yx~0=v_main_~yx~0_4, main_~Y~0=v_main_~Y~0_6, main_~X~0=v_main_~X~0_5, main_~xy~0=v_main_~xy~0_4, main_~y~0=v_main_~y~0_6} AuxVars[] AssignedVars[main_~yx~0, main_~xy~0, main_#t~post6] {543#(and (= main_~x~0 0) (= (+ (* (- 1) main_~X~0) (* main_~Y~0 2)) main_~v~0) (= main_~y~0 0))} is VALID [2022-04-14 20:23:27,163 INFO L272 TraceCheckUtils]: 8: Hoare triple {543#(and (= main_~x~0 0) (= (+ (* (- 1) main_~X~0) (* main_~Y~0 2)) main_~v~0) (= main_~y~0 0))} [77] L34-->__VERIFIER_assertENTRY: Formula: (= (ite (= (+ (* (- 1) v_main_~X~0_10) (* (- 1) v_main_~v~0_10) (* v_main_~xy~0_6 (- 2)) (* 2 v_main_~Y~0_10) (* v_main_~yx~0_6 2)) 0) 1 0) |v___VERIFIER_assert_#in~condInParam_1|) InVars {main_~xy~0=v_main_~xy~0_6, main_~v~0=v_main_~v~0_10, main_~yx~0=v_main_~yx~0_6, main_~Y~0=v_main_~Y~0_10, main_~X~0=v_main_~X~0_10} OutVars{__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~condInParam_1|} AuxVars[] AssignedVars[__VERIFIER_assert_#in~cond, main_~v~0, main_~yx~0, main_~Y~0, main_~X~0, main_~xy~0] {523#true} is VALID [2022-04-14 20:23:27,163 INFO L290 TraceCheckUtils]: 9: Hoare triple {523#true} [79] __VERIFIER_assertENTRY-->L14: Formula: (= v___VERIFIER_assert_~cond_3 |v___VERIFIER_assert_#in~cond_1|) InVars {__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~cond_1|} OutVars{__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~cond_1|, __VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_3} AuxVars[] AssignedVars[__VERIFIER_assert_~cond] {523#true} is VALID [2022-04-14 20:23:27,163 INFO L290 TraceCheckUtils]: 10: Hoare triple {523#true} [84] L14-->L14-2: Formula: (not (= v___VERIFIER_assert_~cond_2 0)) InVars {__VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_2} OutVars{__VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_2} AuxVars[] AssignedVars[] {523#true} is VALID [2022-04-14 20:23:27,164 INFO L290 TraceCheckUtils]: 11: Hoare triple {523#true} [89] L14-2-->__VERIFIER_assertEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {523#true} is VALID [2022-04-14 20:23:27,164 INFO L284 TraceCheckUtils]: 12: Hoare quadruple {523#true} {543#(and (= main_~x~0 0) (= (+ (* (- 1) main_~X~0) (* main_~Y~0 2)) main_~v~0) (= main_~y~0 0))} [93] __VERIFIER_assertEXIT-->L34-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: (= (ite (= (+ (* (- 1) v_main_~X~0_10) (* (- 1) v_main_~v~0_10) (* v_main_~xy~0_6 (- 2)) (* 2 v_main_~Y~0_10) (* v_main_~yx~0_6 2)) 0) 1 0) |v___VERIFIER_assert_#in~condInParam_1|) InVars {main_~xy~0=v_main_~xy~0_6, main_~v~0=v_main_~v~0_10, main_~yx~0=v_main_~yx~0_6, main_~Y~0=v_main_~Y~0_10, main_~X~0=v_main_~X~0_10} OutVars{__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~condInParam_1|} AuxVars[] AssignedVars[__VERIFIER_assert_#in~cond, main_~v~0, main_~yx~0, main_~Y~0, main_~X~0, main_~xy~0] {543#(and (= main_~x~0 0) (= (+ (* (- 1) main_~X~0) (* main_~Y~0 2)) main_~v~0) (= main_~y~0 0))} is VALID [2022-04-14 20:23:27,165 INFO L290 TraceCheckUtils]: 13: Hoare triple {543#(and (= main_~x~0 0) (= (+ (* (- 1) main_~X~0) (* main_~Y~0 2)) main_~v~0) (= main_~y~0 0))} [81] L34-1-->L39: Formula: (<= v_main_~x~0_9 v_main_~X~0_8) InVars {main_~x~0=v_main_~x~0_9, main_~X~0=v_main_~X~0_8} OutVars{main_~x~0=v_main_~x~0_9, main_~X~0=v_main_~X~0_8} AuxVars[] AssignedVars[] {543#(and (= main_~x~0 0) (= (+ (* (- 1) main_~X~0) (* main_~Y~0 2)) main_~v~0) (= main_~y~0 0))} is VALID [2022-04-14 20:23:27,166 INFO L290 TraceCheckUtils]: 14: Hoare triple {543#(and (= main_~x~0 0) (= (+ (* (- 1) main_~X~0) (* main_~Y~0 2)) main_~v~0) (= main_~y~0 0))} [85] L39-->L39-2: Formula: (and (= v_main_~v~0_6 (+ v_main_~v~0_7 (* v_main_~Y~0_8 2))) (< v_main_~v~0_7 0)) InVars {main_~v~0=v_main_~v~0_7, main_~Y~0=v_main_~Y~0_8} OutVars{main_~v~0=v_main_~v~0_6, main_~Y~0=v_main_~Y~0_8} AuxVars[] AssignedVars[main_~v~0] {571#(and (= main_~x~0 0) (= main_~v~0 (+ (* (- 1) main_~X~0) (* main_~Y~0 4))) (= main_~y~0 0))} is VALID [2022-04-14 20:23:27,166 INFO L290 TraceCheckUtils]: 15: Hoare triple {571#(and (= main_~x~0 0) (= main_~v~0 (+ (* (- 1) main_~X~0) (* main_~Y~0 4))) (= main_~y~0 0))} [90] L39-2-->L31-3: Formula: (= v_main_~x~0_1 (+ v_main_~x~0_2 1)) InVars {main_~x~0=v_main_~x~0_2} OutVars{main_~x~0=v_main_~x~0_1, main_#t~post8=|v_main_#t~post8_1|} AuxVars[] AssignedVars[main_~x~0, main_#t~post8] {575#(and (= (+ (- 1) main_~x~0) 0) (= main_~v~0 (+ (* (- 1) main_~X~0) (* main_~Y~0 4))) (= main_~y~0 0))} is VALID [2022-04-14 20:23:27,167 INFO L290 TraceCheckUtils]: 16: Hoare triple {575#(and (= (+ (- 1) main_~x~0) 0) (= main_~v~0 (+ (* (- 1) main_~X~0) (* main_~Y~0 4))) (= main_~y~0 0))} [72] L31-3-->L31-1: Formula: (and (= |v_main_#t~post6_1| v_~counter~0_2) (= v_~counter~0_1 (+ |v_main_#t~post6_1| 1))) InVars {~counter~0=v_~counter~0_2} OutVars{~counter~0=v_~counter~0_1, main_#t~post6=|v_main_#t~post6_1|} AuxVars[] AssignedVars[~counter~0, main_#t~post6] {575#(and (= (+ (- 1) main_~x~0) 0) (= main_~v~0 (+ (* (- 1) main_~X~0) (* main_~Y~0 4))) (= main_~y~0 0))} is VALID [2022-04-14 20:23:27,168 INFO L290 TraceCheckUtils]: 17: Hoare triple {575#(and (= (+ (- 1) main_~x~0) 0) (= main_~v~0 (+ (* (- 1) main_~X~0) (* main_~Y~0 4))) (= main_~y~0 0))} [74] L31-1-->L31-4: Formula: (not (< |v_main_#t~post6_3| 1)) InVars {main_#t~post6=|v_main_#t~post6_3|} OutVars{} AuxVars[] AssignedVars[main_#t~post6] {575#(and (= (+ (- 1) main_~x~0) 0) (= main_~v~0 (+ (* (- 1) main_~X~0) (* main_~Y~0 4))) (= main_~y~0 0))} is VALID [2022-04-14 20:23:27,169 INFO L290 TraceCheckUtils]: 18: Hoare triple {575#(and (= (+ (- 1) main_~x~0) 0) (= main_~v~0 (+ (* (- 1) main_~X~0) (* main_~Y~0 4))) (= main_~y~0 0))} [73] L31-4-->L49: Formula: (and (= v_main_~xy~0_1 (* v_main_~x~0_3 v_main_~y~0_1)) (= v_main_~yx~0_1 (* v_main_~Y~0_1 v_main_~x~0_3))) InVars {main_~y~0=v_main_~y~0_1, main_~x~0=v_main_~x~0_3, main_~Y~0=v_main_~Y~0_1} OutVars{main_~xy~0=v_main_~xy~0_1, main_~y~0=v_main_~y~0_1, main_~x~0=v_main_~x~0_3, main_~yx~0=v_main_~yx~0_1, main_~Y~0=v_main_~Y~0_1} AuxVars[] AssignedVars[main_~yx~0, main_~xy~0] {585#(and (= main_~y~0 main_~xy~0) (= main_~v~0 (+ (* (- 1) main_~X~0) (* main_~Y~0 4))) (= main_~Y~0 main_~yx~0) (= main_~y~0 0))} is VALID [2022-04-14 20:23:27,170 INFO L272 TraceCheckUtils]: 19: Hoare triple {585#(and (= main_~y~0 main_~xy~0) (= main_~v~0 (+ (* (- 1) main_~X~0) (* main_~Y~0 4))) (= main_~Y~0 main_~yx~0) (= main_~y~0 0))} [76] L49-->__VERIFIER_assertENTRY: Formula: (= |v___VERIFIER_assert_#in~condInParam_2| (ite (= 0 (+ (* v_main_~xy~0_7 (- 2)) (* v_main_~y~0_9 2) (* (- 1) v_main_~X~0_11) (* v_main_~yx~0_7 2) (* (- 1) v_main_~v~0_11) (* 2 v_main_~Y~0_11))) 1 0)) InVars {main_~v~0=v_main_~v~0_11, main_~yx~0=v_main_~yx~0_7, main_~Y~0=v_main_~Y~0_11, main_~X~0=v_main_~X~0_11, main_~xy~0=v_main_~xy~0_7, main_~y~0=v_main_~y~0_9} OutVars{__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~condInParam_2|} AuxVars[] AssignedVars[__VERIFIER_assert_#in~cond, main_~v~0, main_~yx~0, main_~Y~0, main_~X~0, main_~xy~0, main_~y~0] {589#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-14 20:23:27,170 INFO L290 TraceCheckUtils]: 20: Hoare triple {589#(<= 1 |__VERIFIER_assert_#in~cond|)} [79] __VERIFIER_assertENTRY-->L14: Formula: (= v___VERIFIER_assert_~cond_3 |v___VERIFIER_assert_#in~cond_1|) InVars {__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~cond_1|} OutVars{__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~cond_1|, __VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_3} AuxVars[] AssignedVars[__VERIFIER_assert_~cond] {593#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-14 20:23:27,170 INFO L290 TraceCheckUtils]: 21: Hoare triple {593#(<= 1 __VERIFIER_assert_~cond)} [83] L14-->L15: Formula: (= v___VERIFIER_assert_~cond_1 0) InVars {__VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_1} OutVars{__VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_1} AuxVars[] AssignedVars[] {524#false} is VALID [2022-04-14 20:23:27,171 INFO L290 TraceCheckUtils]: 22: Hoare triple {524#false} [87] L15-->__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {524#false} is VALID [2022-04-14 20:23:27,171 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-14 20:23:27,171 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-14 20:23:27,329 INFO L290 TraceCheckUtils]: 22: Hoare triple {524#false} [87] L15-->__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {524#false} is VALID [2022-04-14 20:23:27,330 INFO L290 TraceCheckUtils]: 21: Hoare triple {593#(<= 1 __VERIFIER_assert_~cond)} [83] L14-->L15: Formula: (= v___VERIFIER_assert_~cond_1 0) InVars {__VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_1} OutVars{__VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_1} AuxVars[] AssignedVars[] {524#false} is VALID [2022-04-14 20:23:27,330 INFO L290 TraceCheckUtils]: 20: Hoare triple {589#(<= 1 |__VERIFIER_assert_#in~cond|)} [79] __VERIFIER_assertENTRY-->L14: Formula: (= v___VERIFIER_assert_~cond_3 |v___VERIFIER_assert_#in~cond_1|) InVars {__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~cond_1|} OutVars{__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~cond_1|, __VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_3} AuxVars[] AssignedVars[__VERIFIER_assert_~cond] {593#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-14 20:23:27,331 INFO L272 TraceCheckUtils]: 19: Hoare triple {609#(= (+ (* main_~y~0 2) (* main_~Y~0 2) (* 2 main_~yx~0)) (+ (* 2 main_~xy~0) main_~X~0 main_~v~0))} [76] L49-->__VERIFIER_assertENTRY: Formula: (= |v___VERIFIER_assert_#in~condInParam_2| (ite (= 0 (+ (* v_main_~xy~0_7 (- 2)) (* v_main_~y~0_9 2) (* (- 1) v_main_~X~0_11) (* v_main_~yx~0_7 2) (* (- 1) v_main_~v~0_11) (* 2 v_main_~Y~0_11))) 1 0)) InVars {main_~v~0=v_main_~v~0_11, main_~yx~0=v_main_~yx~0_7, main_~Y~0=v_main_~Y~0_11, main_~X~0=v_main_~X~0_11, main_~xy~0=v_main_~xy~0_7, main_~y~0=v_main_~y~0_9} OutVars{__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~condInParam_2|} AuxVars[] AssignedVars[__VERIFIER_assert_#in~cond, main_~v~0, main_~yx~0, main_~Y~0, main_~X~0, main_~xy~0, main_~y~0] {589#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-14 20:23:27,332 INFO L290 TraceCheckUtils]: 18: Hoare triple {613#(= (+ (* 2 (* main_~y~0 main_~x~0)) main_~X~0 main_~v~0) (+ (* main_~y~0 2) (* main_~Y~0 2) (* 2 (* main_~Y~0 main_~x~0))))} [73] L31-4-->L49: Formula: (and (= v_main_~xy~0_1 (* v_main_~x~0_3 v_main_~y~0_1)) (= v_main_~yx~0_1 (* v_main_~Y~0_1 v_main_~x~0_3))) InVars {main_~y~0=v_main_~y~0_1, main_~x~0=v_main_~x~0_3, main_~Y~0=v_main_~Y~0_1} OutVars{main_~xy~0=v_main_~xy~0_1, main_~y~0=v_main_~y~0_1, main_~x~0=v_main_~x~0_3, main_~yx~0=v_main_~yx~0_1, main_~Y~0=v_main_~Y~0_1} AuxVars[] AssignedVars[main_~yx~0, main_~xy~0] {609#(= (+ (* main_~y~0 2) (* main_~Y~0 2) (* 2 main_~yx~0)) (+ (* 2 main_~xy~0) main_~X~0 main_~v~0))} is VALID [2022-04-14 20:23:27,332 INFO L290 TraceCheckUtils]: 17: Hoare triple {613#(= (+ (* 2 (* main_~y~0 main_~x~0)) main_~X~0 main_~v~0) (+ (* main_~y~0 2) (* main_~Y~0 2) (* 2 (* main_~Y~0 main_~x~0))))} [74] L31-1-->L31-4: Formula: (not (< |v_main_#t~post6_3| 1)) InVars {main_#t~post6=|v_main_#t~post6_3|} OutVars{} AuxVars[] AssignedVars[main_#t~post6] {613#(= (+ (* 2 (* main_~y~0 main_~x~0)) main_~X~0 main_~v~0) (+ (* main_~y~0 2) (* main_~Y~0 2) (* 2 (* main_~Y~0 main_~x~0))))} is VALID [2022-04-14 20:23:27,333 INFO L290 TraceCheckUtils]: 16: Hoare triple {613#(= (+ (* 2 (* main_~y~0 main_~x~0)) main_~X~0 main_~v~0) (+ (* main_~y~0 2) (* main_~Y~0 2) (* 2 (* main_~Y~0 main_~x~0))))} [72] L31-3-->L31-1: Formula: (and (= |v_main_#t~post6_1| v_~counter~0_2) (= v_~counter~0_1 (+ |v_main_#t~post6_1| 1))) InVars {~counter~0=v_~counter~0_2} OutVars{~counter~0=v_~counter~0_1, main_#t~post6=|v_main_#t~post6_1|} AuxVars[] AssignedVars[~counter~0, main_#t~post6] {613#(= (+ (* 2 (* main_~y~0 main_~x~0)) main_~X~0 main_~v~0) (+ (* main_~y~0 2) (* main_~Y~0 2) (* 2 (* main_~Y~0 main_~x~0))))} is VALID [2022-04-14 20:23:27,337 INFO L290 TraceCheckUtils]: 15: Hoare triple {623#(= (+ (* (* (+ main_~x~0 1) main_~y~0) 2) main_~X~0 main_~v~0) (+ (* main_~y~0 2) (* main_~Y~0 2) (* 2 (* (+ main_~x~0 1) main_~Y~0))))} [90] L39-2-->L31-3: Formula: (= v_main_~x~0_1 (+ v_main_~x~0_2 1)) InVars {main_~x~0=v_main_~x~0_2} OutVars{main_~x~0=v_main_~x~0_1, main_#t~post8=|v_main_#t~post8_1|} AuxVars[] AssignedVars[main_~x~0, main_#t~post8] {613#(= (+ (* 2 (* main_~y~0 main_~x~0)) main_~X~0 main_~v~0) (+ (* main_~y~0 2) (* main_~Y~0 2) (* 2 (* main_~Y~0 main_~x~0))))} is VALID [2022-04-14 20:23:27,337 INFO L290 TraceCheckUtils]: 14: Hoare triple {627#(= (+ (* (* (+ main_~x~0 1) main_~y~0) 2) main_~X~0 main_~v~0 (* main_~Y~0 2)) (+ (* main_~y~0 2) (* main_~Y~0 2) (* 2 (* (+ main_~x~0 1) main_~Y~0))))} [85] L39-->L39-2: Formula: (and (= v_main_~v~0_6 (+ v_main_~v~0_7 (* v_main_~Y~0_8 2))) (< v_main_~v~0_7 0)) InVars {main_~v~0=v_main_~v~0_7, main_~Y~0=v_main_~Y~0_8} OutVars{main_~v~0=v_main_~v~0_6, main_~Y~0=v_main_~Y~0_8} AuxVars[] AssignedVars[main_~v~0] {623#(= (+ (* (* (+ main_~x~0 1) main_~y~0) 2) main_~X~0 main_~v~0) (+ (* main_~y~0 2) (* main_~Y~0 2) (* 2 (* (+ main_~x~0 1) main_~Y~0))))} is VALID [2022-04-14 20:23:27,338 INFO L290 TraceCheckUtils]: 13: Hoare triple {627#(= (+ (* (* (+ main_~x~0 1) main_~y~0) 2) main_~X~0 main_~v~0 (* main_~Y~0 2)) (+ (* main_~y~0 2) (* main_~Y~0 2) (* 2 (* (+ main_~x~0 1) main_~Y~0))))} [81] L34-1-->L39: Formula: (<= v_main_~x~0_9 v_main_~X~0_8) InVars {main_~x~0=v_main_~x~0_9, main_~X~0=v_main_~X~0_8} OutVars{main_~x~0=v_main_~x~0_9, main_~X~0=v_main_~X~0_8} AuxVars[] AssignedVars[] {627#(= (+ (* (* (+ main_~x~0 1) main_~y~0) 2) main_~X~0 main_~v~0 (* main_~Y~0 2)) (+ (* main_~y~0 2) (* main_~Y~0 2) (* 2 (* (+ main_~x~0 1) main_~Y~0))))} is VALID [2022-04-14 20:23:27,348 INFO L284 TraceCheckUtils]: 12: Hoare quadruple {523#true} {627#(= (+ (* (* (+ main_~x~0 1) main_~y~0) 2) main_~X~0 main_~v~0 (* main_~Y~0 2)) (+ (* main_~y~0 2) (* main_~Y~0 2) (* 2 (* (+ main_~x~0 1) main_~Y~0))))} [93] __VERIFIER_assertEXIT-->L34-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: (= (ite (= (+ (* (- 1) v_main_~X~0_10) (* (- 1) v_main_~v~0_10) (* v_main_~xy~0_6 (- 2)) (* 2 v_main_~Y~0_10) (* v_main_~yx~0_6 2)) 0) 1 0) |v___VERIFIER_assert_#in~condInParam_1|) InVars {main_~xy~0=v_main_~xy~0_6, main_~v~0=v_main_~v~0_10, main_~yx~0=v_main_~yx~0_6, main_~Y~0=v_main_~Y~0_10, main_~X~0=v_main_~X~0_10} OutVars{__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~condInParam_1|} AuxVars[] AssignedVars[__VERIFIER_assert_#in~cond, main_~v~0, main_~yx~0, main_~Y~0, main_~X~0, main_~xy~0] {627#(= (+ (* (* (+ main_~x~0 1) main_~y~0) 2) main_~X~0 main_~v~0 (* main_~Y~0 2)) (+ (* main_~y~0 2) (* main_~Y~0 2) (* 2 (* (+ main_~x~0 1) main_~Y~0))))} is VALID [2022-04-14 20:23:27,348 INFO L290 TraceCheckUtils]: 11: Hoare triple {523#true} [89] L14-2-->__VERIFIER_assertEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {523#true} is VALID [2022-04-14 20:23:27,348 INFO L290 TraceCheckUtils]: 10: Hoare triple {523#true} [84] L14-->L14-2: Formula: (not (= v___VERIFIER_assert_~cond_2 0)) InVars {__VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_2} OutVars{__VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_2} AuxVars[] AssignedVars[] {523#true} is VALID [2022-04-14 20:23:27,348 INFO L290 TraceCheckUtils]: 9: Hoare triple {523#true} [79] __VERIFIER_assertENTRY-->L14: Formula: (= v___VERIFIER_assert_~cond_3 |v___VERIFIER_assert_#in~cond_1|) InVars {__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~cond_1|} OutVars{__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~cond_1|, __VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_3} AuxVars[] AssignedVars[__VERIFIER_assert_~cond] {523#true} is VALID [2022-04-14 20:23:27,348 INFO L272 TraceCheckUtils]: 8: Hoare triple {627#(= (+ (* (* (+ main_~x~0 1) main_~y~0) 2) main_~X~0 main_~v~0 (* main_~Y~0 2)) (+ (* main_~y~0 2) (* main_~Y~0 2) (* 2 (* (+ main_~x~0 1) main_~Y~0))))} [77] L34-->__VERIFIER_assertENTRY: Formula: (= (ite (= (+ (* (- 1) v_main_~X~0_10) (* (- 1) v_main_~v~0_10) (* v_main_~xy~0_6 (- 2)) (* 2 v_main_~Y~0_10) (* v_main_~yx~0_6 2)) 0) 1 0) |v___VERIFIER_assert_#in~condInParam_1|) InVars {main_~xy~0=v_main_~xy~0_6, main_~v~0=v_main_~v~0_10, main_~yx~0=v_main_~yx~0_6, main_~Y~0=v_main_~Y~0_10, main_~X~0=v_main_~X~0_10} OutVars{__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~condInParam_1|} AuxVars[] AssignedVars[__VERIFIER_assert_#in~cond, main_~v~0, main_~yx~0, main_~Y~0, main_~X~0, main_~xy~0] {523#true} is VALID [2022-04-14 20:23:27,349 INFO L290 TraceCheckUtils]: 7: Hoare triple {627#(= (+ (* (* (+ main_~x~0 1) main_~y~0) 2) main_~X~0 main_~v~0 (* main_~Y~0 2)) (+ (* main_~y~0 2) (* main_~Y~0 2) (* 2 (* (+ main_~x~0 1) main_~Y~0))))} [75] L31-1-->L34: Formula: (and (< |v_main_#t~post6_5| 1) (= v_main_~yx~0_4 (* v_main_~Y~0_6 v_main_~x~0_7)) (= v_main_~xy~0_4 (* v_main_~X~0_5 v_main_~y~0_6))) InVars {main_~y~0=v_main_~y~0_6, main_~x~0=v_main_~x~0_7, main_~Y~0=v_main_~Y~0_6, main_#t~post6=|v_main_#t~post6_5|, main_~X~0=v_main_~X~0_5} OutVars{main_~x~0=v_main_~x~0_7, main_~yx~0=v_main_~yx~0_4, main_~Y~0=v_main_~Y~0_6, main_~X~0=v_main_~X~0_5, main_~xy~0=v_main_~xy~0_4, main_~y~0=v_main_~y~0_6} AuxVars[] AssignedVars[main_~yx~0, main_~xy~0, main_#t~post6] {627#(= (+ (* (* (+ main_~x~0 1) main_~y~0) 2) main_~X~0 main_~v~0 (* main_~Y~0 2)) (+ (* main_~y~0 2) (* main_~Y~0 2) (* 2 (* (+ main_~x~0 1) main_~Y~0))))} is VALID [2022-04-14 20:23:27,350 INFO L290 TraceCheckUtils]: 6: Hoare triple {627#(= (+ (* (* (+ main_~x~0 1) main_~y~0) 2) main_~X~0 main_~v~0 (* main_~Y~0 2)) (+ (* main_~y~0 2) (* main_~Y~0 2) (* 2 (* (+ main_~x~0 1) main_~Y~0))))} [72] L31-3-->L31-1: Formula: (and (= |v_main_#t~post6_1| v_~counter~0_2) (= v_~counter~0_1 (+ |v_main_#t~post6_1| 1))) InVars {~counter~0=v_~counter~0_2} OutVars{~counter~0=v_~counter~0_1, main_#t~post6=|v_main_#t~post6_1|} AuxVars[] AssignedVars[~counter~0, main_#t~post6] {627#(= (+ (* (* (+ main_~x~0 1) main_~y~0) 2) main_~X~0 main_~v~0 (* main_~Y~0 2)) (+ (* main_~y~0 2) (* main_~Y~0 2) (* 2 (* (+ main_~x~0 1) main_~Y~0))))} is VALID [2022-04-14 20:23:27,351 INFO L290 TraceCheckUtils]: 5: Hoare triple {523#true} [69] mainENTRY-->L31-3: Formula: (and (<= |v_main_#t~nondet5_2| 2147483647) (= v_main_~X~0_2 |v_main_#t~nondet4_2|) (= v_main_~Y~0_3 |v_main_#t~nondet5_2|) (= (+ (* v_main_~Y~0_3 2) (* (- 1) v_main_~X~0_2)) v_main_~v~0_2) (<= 0 (+ |v_main_#t~nondet4_2| 2147483648)) (= v_main_~x~0_4 0) (<= |v_main_#t~nondet4_2| 2147483647) (<= 0 (+ |v_main_#t~nondet5_2| 2147483648)) (= v_main_~y~0_3 0)) InVars {main_#t~nondet5=|v_main_#t~nondet5_2|, main_#t~nondet4=|v_main_#t~nondet4_2|} OutVars{main_~v~0=v_main_~v~0_2, main_~x~0=v_main_~x~0_4, main_~Y~0=v_main_~Y~0_3, main_~yx~0=v_main_~yx~0_3, main_~X~0=v_main_~X~0_2, main_~y~0=v_main_~y~0_3, main_~xy~0=v_main_~xy~0_3} AuxVars[] AssignedVars[main_#t~nondet5, main_#t~nondet4, main_~v~0, main_~x~0, main_~Y~0, main_~yx~0, main_~X~0, main_~y~0, main_~xy~0] {627#(= (+ (* (* (+ main_~x~0 1) main_~y~0) 2) main_~X~0 main_~v~0 (* main_~Y~0 2)) (+ (* main_~y~0 2) (* main_~Y~0 2) (* 2 (* (+ main_~x~0 1) main_~Y~0))))} is VALID [2022-04-14 20:23:27,351 INFO L272 TraceCheckUtils]: 4: Hoare triple {523#true} [66] L-1-->mainENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {523#true} is VALID [2022-04-14 20:23:27,351 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {523#true} {523#true} [91] ULTIMATE.initEXIT-->L-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {523#true} is VALID [2022-04-14 20:23:27,352 INFO L290 TraceCheckUtils]: 2: Hoare triple {523#true} [70] ULTIMATE.initFINAL-->ULTIMATE.initEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {523#true} is VALID [2022-04-14 20:23:27,352 INFO L290 TraceCheckUtils]: 1: Hoare triple {523#true} [67] ULTIMATE.initENTRY-->ULTIMATE.initFINAL: Formula: (let ((.cse0 (select |v_#memory_int_1| 1))) (and (= v_~counter~0_3 0) (= (select |v_#length_1| 2) 15) (= 48 (select .cse0 0)) (= (select |v_#valid_1| 2) 1) (= (select |v_#valid_1| 0) 0) (< 0 |v_#StackHeapBarrier_1|) (= |v_#NULL.base_1| 0) (= 1 (select |v_#valid_1| 3)) (= (select |v_#length_1| 3) 12) (= (select |v_#valid_1| 1) 1) (= 2 (select |v_#length_1| 1)) (= (select .cse0 1) 0) (= |v_#NULL.offset_1| 0))) InVars {#memory_int=|v_#memory_int_1|, #StackHeapBarrier=|v_#StackHeapBarrier_1|, #length=|v_#length_1|, #valid=|v_#valid_1|} OutVars{~counter~0=v_~counter~0_3, #StackHeapBarrier=|v_#StackHeapBarrier_1|, #valid=|v_#valid_1|, #memory_int=|v_#memory_int_1|, #NULL.offset=|v_#NULL.offset_1|, #length=|v_#length_1|, #NULL.base=|v_#NULL.base_1|} AuxVars[] AssignedVars[~counter~0, #NULL.offset, #NULL.base] {523#true} is VALID [2022-04-14 20:23:27,352 INFO L272 TraceCheckUtils]: 0: Hoare triple {523#true} [65] ULTIMATE.startENTRY-->ULTIMATE.initENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {523#true} is VALID [2022-04-14 20:23:27,353 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-14 20:23:27,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-14 20:23:27,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944332838] [2022-04-14 20:23:27,353 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-14 20:23:27,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1650743351] [2022-04-14 20:23:27,353 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1650743351] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-14 20:23:27,353 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-14 20:23:27,353 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2022-04-14 20:23:27,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667035166] [2022-04-14 20:23:27,353 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-04-14 20:23:27,354 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 2.6) internal successors, (26), 11 states have internal predecessors, (26), 5 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 23 [2022-04-14 20:23:27,354 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-14 20:23:27,354 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 12 states, 10 states have (on average 2.6) internal successors, (26), 11 states have internal predecessors, (26), 5 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-14 20:23:27,491 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 35 edges. 35 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-14 20:23:27,491 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-04-14 20:23:27,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-14 20:23:27,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-04-14 20:23:27,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-04-14 20:23:27,492 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand has 12 states, 10 states have (on average 2.6) internal successors, (26), 11 states have internal predecessors, (26), 5 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-14 20:23:27,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-14 20:23:27,718 INFO L93 Difference]: Finished difference Result 31 states and 30 transitions. [2022-04-14 20:23:27,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-04-14 20:23:27,718 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 2.6) internal successors, (26), 11 states have internal predecessors, (26), 5 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 23 [2022-04-14 20:23:27,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-14 20:23:27,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 10 states have (on average 2.6) internal successors, (26), 11 states have internal predecessors, (26), 5 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-14 20:23:27,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 30 transitions. [2022-04-14 20:23:27,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 10 states have (on average 2.6) internal successors, (26), 11 states have internal predecessors, (26), 5 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-14 20:23:27,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 30 transitions. [2022-04-14 20:23:27,721 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 9 states and 30 transitions. [2022-04-14 20:23:27,749 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 30 edges. 30 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-14 20:23:27,750 INFO L225 Difference]: With dead ends: 31 [2022-04-14 20:23:27,750 INFO L226 Difference]: Without dead ends: 24 [2022-04-14 20:23:27,751 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2022-04-14 20:23:27,751 INFO L913 BasicCegarLoop]: 14 mSDtfsCounter, 11 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-14 20:23:27,751 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 88 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-14 20:23:27,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-04-14 20:23:27,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2022-04-14 20:23:27,753 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-14 20:23:27,753 INFO L82 GeneralOperation]: Start isEquivalent. First operand 24 states. Second operand has 24 states, 17 states have (on average 1.0) internal successors, (17), 17 states have internal predecessors, (17), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-14 20:23:27,753 INFO L74 IsIncluded]: Start isIncluded. First operand 24 states. Second operand has 24 states, 17 states have (on average 1.0) internal successors, (17), 17 states have internal predecessors, (17), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-14 20:23:27,753 INFO L87 Difference]: Start difference. First operand 24 states. Second operand has 24 states, 17 states have (on average 1.0) internal successors, (17), 17 states have internal predecessors, (17), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-14 20:23:27,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-14 20:23:27,755 INFO L93 Difference]: Finished difference Result 24 states and 23 transitions. [2022-04-14 20:23:27,755 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 23 transitions. [2022-04-14 20:23:27,755 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-14 20:23:27,755 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-14 20:23:27,755 INFO L74 IsIncluded]: Start isIncluded. First operand has 24 states, 17 states have (on average 1.0) internal successors, (17), 17 states have internal predecessors, (17), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand 24 states. [2022-04-14 20:23:27,756 INFO L87 Difference]: Start difference. First operand has 24 states, 17 states have (on average 1.0) internal successors, (17), 17 states have internal predecessors, (17), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand 24 states. [2022-04-14 20:23:27,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-14 20:23:27,756 INFO L93 Difference]: Finished difference Result 24 states and 23 transitions. [2022-04-14 20:23:27,756 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 23 transitions. [2022-04-14 20:23:27,756 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-14 20:23:27,756 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-14 20:23:27,757 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-14 20:23:27,757 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-14 20:23:27,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 17 states have (on average 1.0) internal successors, (17), 17 states have internal predecessors, (17), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-14 20:23:27,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 23 transitions. [2022-04-14 20:23:27,757 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 23 transitions. Word has length 23 [2022-04-14 20:23:27,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-14 20:23:27,757 INFO L478 AbstractCegarLoop]: Abstraction has 24 states and 23 transitions. [2022-04-14 20:23:27,758 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 2.6) internal successors, (26), 11 states have internal predecessors, (26), 5 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-14 20:23:27,758 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 23 transitions. [2022-04-14 20:23:27,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-04-14 20:23:27,758 INFO L491 BasicCegarLoop]: Found error trace [2022-04-14 20:23:27,758 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-14 20:23:27,779 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-04-14 20:23:27,958 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-14 20:23:27,959 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-14 20:23:27,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-14 20:23:27,959 INFO L85 PathProgramCache]: Analyzing trace with hash 1519292561, now seen corresponding path program 1 times [2022-04-14 20:23:27,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-14 20:23:27,959 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343384982] [2022-04-14 20:23:27,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-14 20:23:27,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-14 20:23:27,979 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-14 20:23:27,979 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [795347217] [2022-04-14 20:23:27,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-14 20:23:27,979 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-14 20:23:27,979 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-14 20:23:27,980 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-14 20:23:27,981 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-04-14 20:23:28,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-14 20:23:28,017 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-14 20:23:28,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-14 20:23:28,056 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-04-14 20:23:28,056 INFO L618 BasicCegarLoop]: Counterexample is feasible [2022-04-14 20:23:28,057 INFO L788 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-04-14 20:23:28,083 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-04-14 20:23:28,265 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-14 20:23:28,267 INFO L719 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-04-14 20:23:28,269 INFO L177 ceAbstractionStarter]: Computing trace abstraction results [2022-04-14 20:23:28,287 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.04 08:23:28 BasicIcfg [2022-04-14 20:23:28,287 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-04-14 20:23:28,288 INFO L158 Benchmark]: Toolchain (without parser) took 3843.59ms. Allocated memory was 175.1MB in the beginning and 224.4MB in the end (delta: 49.3MB). Free memory was 127.8MB in the beginning and 194.1MB in the end (delta: -66.3MB). There was no memory consumed. Max. memory is 8.0GB. [2022-04-14 20:23:28,288 INFO L158 Benchmark]: CDTParser took 2.36ms. Allocated memory is still 175.1MB. Free memory is still 144.5MB. There was no memory consumed. Max. memory is 8.0GB. [2022-04-14 20:23:28,288 INFO L158 Benchmark]: CACSL2BoogieTranslator took 232.87ms. Allocated memory is still 175.1MB. Free memory was 127.6MB in the beginning and 153.3MB in the end (delta: -25.7MB). Peak memory consumption was 12.2MB. Max. memory is 8.0GB. [2022-04-14 20:23:28,288 INFO L158 Benchmark]: Boogie Preprocessor took 22.67ms. Allocated memory is still 175.1MB. Free memory was 153.3MB in the beginning and 152.2MB in the end (delta: 1.1MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-04-14 20:23:28,289 INFO L158 Benchmark]: RCFGBuilder took 257.34ms. Allocated memory is still 175.1MB. Free memory was 151.8MB in the beginning and 139.7MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2022-04-14 20:23:28,289 INFO L158 Benchmark]: IcfgTransformer took 25.86ms. Allocated memory is still 175.1MB. Free memory was 139.7MB in the beginning and 138.1MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-04-14 20:23:28,289 INFO L158 Benchmark]: TraceAbstraction took 3294.59ms. Allocated memory was 175.1MB in the beginning and 224.4MB in the end (delta: 49.3MB). Free memory was 137.6MB in the beginning and 194.1MB in the end (delta: -56.5MB). There was no memory consumed. Max. memory is 8.0GB. [2022-04-14 20:23:28,291 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 2.36ms. Allocated memory is still 175.1MB. Free memory is still 144.5MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 232.87ms. Allocated memory is still 175.1MB. Free memory was 127.6MB in the beginning and 153.3MB in the end (delta: -25.7MB). Peak memory consumption was 12.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 22.67ms. Allocated memory is still 175.1MB. Free memory was 153.3MB in the beginning and 152.2MB in the end (delta: 1.1MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 257.34ms. Allocated memory is still 175.1MB. Free memory was 151.8MB in the beginning and 139.7MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * IcfgTransformer took 25.86ms. Allocated memory is still 175.1MB. Free memory was 139.7MB in the beginning and 138.1MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * TraceAbstraction took 3294.59ms. Allocated memory was 175.1MB in the beginning and 224.4MB in the end (delta: 49.3MB). Free memory was 137.6MB in the beginning and 194.1MB in the end (delta: -56.5MB). There was no memory consumed. 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 - CounterExampleResult [Line: 16]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L21] int counter = 0; VAL [\old(counter)=5, counter=0] [L23] int X, Y; [L24] long long x, y, v, xy, yx; [L25] X = __VERIFIER_nondet_int() [L26] Y = __VERIFIER_nondet_int() [L27] v = ((long long) 2 * Y) - X [L28] y = 0 [L29] x = 0 VAL [\old(counter)=0, counter=0, v=0, x=0, X=4, Y=2, y=0] [L31] EXPR counter++ VAL [\old(counter)=0, counter=1, counter++=0, v=0, x=0, X=4, y=0, Y=2] [L31] COND TRUE counter++<1 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [\old(counter)=0, counter=1, v=0, x=0, x=0, x=0, X=4, y=0, Y=2] [L34] CALL __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [\old(cond)=1, \old(counter)=0, counter=1] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=1] [L34] RET __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [\old(counter)=0, counter=1, v=0, X=4, x=0, x=0, x=0, y=0, Y=2] [L35] COND FALSE !(!(x <= X)) VAL [\old(counter)=0, counter=1, v=0, x=0, x=0, X=4, x=0, Y=2, y=0] [L39] COND FALSE !(v < 0) [L42] v = v + 2 * ((long long) Y - X) [L43] y++ VAL [\old(counter)=0, counter=1, v=-4, x=0, x=0, X=4, x=0, Y=2, y=1] [L45] x++ VAL [\old(counter)=0, counter=1, v=-4, x=0, x=0, X=4, x=1, Y=2, y=1] [L31] EXPR counter++ VAL [\old(counter)=0, counter=2, counter++=1, v=-4, x=0, X=4, x=1, x=0, y=1, Y=2] [L31] COND FALSE !(counter++<1) [L47] xy = (long long) x*y [L48] yx = (long long) Y*x VAL [\old(counter)=0, counter=2, v=-4, X=4, x=1, x=2, x=1, y=1, Y=2] [L49] CALL __VERIFIER_assert(2*yx - 2*xy - X + (long long) 2*Y - v + 2*y == 0) VAL [\old(cond)=0, \old(counter)=0, counter=2] [L14] COND TRUE !(cond) VAL [\old(cond)=0, \old(counter)=0, cond=0, counter=2] [L16] reach_error() VAL [\old(cond)=0, \old(counter)=0, cond=0, counter=2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 25 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 3.2s, OverallIterations: 5, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 45 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 45 mSDsluCounter, 225 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 149 mSDsCounter, 19 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 160 IncrementalHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 19 mSolverCounterUnsat, 76 mSDtfsCounter, 160 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 109 GetRequests, 83 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred in iteration=2, InterpolantAutomatonStates: 23, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 2 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 92 NumberOfCodeBlocks, 92 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 108 ConstructedInterpolants, 0 QuantifiedInterpolants, 624 SizeOfPredicates, 7 NumberOfNonLiveVariables, 285 ConjunctsInSsa, 37 ConjunctsInUnsatCore, 6 InterpolantComputations, 2 PerfectInterpolantSequences, 12/18 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 proved your program to be incorrect! [2022-04-14 20:23:28,320 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...