/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_LAZY.epf -i ../../../trunk/examples/svcomp/loop-zilu/benchmark18_conjunctive.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 14:35:09,906 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 14:35:09,907 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 14:35:09,960 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-10 14:35:09,966 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 14:35:09,971 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 14:35:09,971 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 14:35:09,972 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 14:35:09,973 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 14:35:09,973 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 14:35:09,974 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 14:35:09,975 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 14:35:09,976 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 14:35:09,977 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 14:35:09,978 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 14:35:09,978 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 14:35:09,980 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 14:35:09,985 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 14:35:09,986 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 14:35:09,986 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 14:35:09,987 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_LAZY.epf [2022-01-10 14:35:10,000 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 14:35:10,000 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 14:35:10,000 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 14:35:10,000 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 14:35:10,001 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 14:35:10,001 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 14:35:10,001 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 14:35:10,001 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 14:35:10,001 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 14:35:10,001 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 14:35:10,001 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 14:35:10,002 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 14:35:10,002 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 14:35:10,002 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 14:35:10,002 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 14:35:10,002 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 14:35:10,002 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 14:35:10,002 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 14:35:10,003 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 14:35:10,003 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 14:35:10,003 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 14:35:10,003 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 14:35:10,003 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 14:35:10,003 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 14:35:10,004 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 14:35:10,004 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 14:35:10,004 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 14:35:10,004 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 14:35:10,004 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 14:35:10,004 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 14:35:10,005 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 14:35:10,005 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 14:35:10,005 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 14:35:10,005 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_LAZY WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 14:35:10,150 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 14:35:10,163 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 14:35:10,164 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 14:35:10,165 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 14:35:10,165 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 14:35:10,166 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-zilu/benchmark18_conjunctive.i [2022-01-10 14:35:10,203 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7d6323bfb/ae4de764dc6c4ca5a18d9ef9d0b9d787/FLAGea44f5eb2 [2022-01-10 14:35:10,587 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 14:35:10,588 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-zilu/benchmark18_conjunctive.i [2022-01-10 14:35:10,607 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7d6323bfb/ae4de764dc6c4ca5a18d9ef9d0b9d787/FLAGea44f5eb2 [2022-01-10 14:35:10,621 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7d6323bfb/ae4de764dc6c4ca5a18d9ef9d0b9d787 [2022-01-10 14:35:10,624 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 14:35:10,627 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 14:35:10,636 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 14:35:10,637 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 14:35:10,639 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 14:35:10,639 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 02:35:10" (1/1) ... [2022-01-10 14:35:10,640 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b4d047 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:35:10, skipping insertion in model container [2022-01-10 14:35:10,640 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 02:35:10" (1/1) ... [2022-01-10 14:35:10,644 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 14:35:10,651 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 14:35:10,764 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-zilu/benchmark18_conjunctive.i[873,886] [2022-01-10 14:35:10,777 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 14:35:10,783 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 14:35:10,796 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-zilu/benchmark18_conjunctive.i[873,886] [2022-01-10 14:35:10,799 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 14:35:10,809 INFO L208 MainTranslator]: Completed translation [2022-01-10 14:35:10,809 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:35:10 WrapperNode [2022-01-10 14:35:10,809 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 14:35:10,810 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 14:35:10,810 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 14:35:10,810 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 14:35:10,815 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:35:10" (1/1) ... [2022-01-10 14:35:10,820 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:35:10" (1/1) ... [2022-01-10 14:35:10,834 INFO L137 Inliner]: procedures = 15, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 34 [2022-01-10 14:35:10,834 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 14:35:10,835 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 14:35:10,835 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 14:35:10,835 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 14:35:10,839 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:35:10" (1/1) ... [2022-01-10 14:35:10,839 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:35:10" (1/1) ... [2022-01-10 14:35:10,842 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:35:10" (1/1) ... [2022-01-10 14:35:10,842 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:35:10" (1/1) ... [2022-01-10 14:35:10,852 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:35:10" (1/1) ... [2022-01-10 14:35:10,854 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:35:10" (1/1) ... [2022-01-10 14:35:10,855 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:35:10" (1/1) ... [2022-01-10 14:35:10,856 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 14:35:10,856 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 14:35:10,857 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 14:35:10,857 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 14:35:10,869 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:35:10" (1/1) ... [2022-01-10 14:35:10,874 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 14:35:10,883 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 14:35:10,904 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-10 14:35:10,921 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-10 14:35:10,931 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 14:35:10,932 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 14:35:10,932 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 14:35:10,932 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 14:35:10,977 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 14:35:10,979 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 14:35:11,054 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 14:35:11,058 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 14:35:11,058 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 14:35:11,059 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 02:35:11 BoogieIcfgContainer [2022-01-10 14:35:11,059 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 14:35:11,060 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 14:35:11,060 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 14:35:11,061 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 14:35:11,063 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 02:35:11" (1/1) ... [2022-01-10 14:35:11,096 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 02:35:11 BasicIcfg [2022-01-10 14:35:11,096 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 14:35:11,097 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 14:35:11,097 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 14:35:11,099 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 14:35:11,099 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 02:35:10" (1/4) ... [2022-01-10 14:35:11,099 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e8018bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 02:35:11, skipping insertion in model container [2022-01-10 14:35:11,099 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:35:10" (2/4) ... [2022-01-10 14:35:11,100 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e8018bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 02:35:11, skipping insertion in model container [2022-01-10 14:35:11,100 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 02:35:11" (3/4) ... [2022-01-10 14:35:11,100 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e8018bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 02:35:11, skipping insertion in model container [2022-01-10 14:35:11,100 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 02:35:11" (4/4) ... [2022-01-10 14:35:11,101 INFO L111 eAbstractionObserver]: Analyzing ICFG benchmark18_conjunctive.iTransformedIcfg [2022-01-10 14:35:11,104 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 14:35:11,104 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 14:35:11,129 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 14:35:11,133 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-10 14:35:11,133 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 14:35:11,150 INFO L276 IsEmpty]: Start isEmpty. Operand has 12 states, 10 states have (on average 1.5) internal successors, (15), 11 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:35:11,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-01-10 14:35:11,153 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:35:11,153 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-01-10 14:35:11,153 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 14:35:11,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:35:11,156 INFO L85 PathProgramCache]: Analyzing trace with hash 1973472424, now seen corresponding path program 1 times [2022-01-10 14:35:11,161 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:35:11,162 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299066406] [2022-01-10 14:35:11,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:35:11,162 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:35:11,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:35:11,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 14:35:11,317 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:35:11,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299066406] [2022-01-10 14:35:11,319 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299066406] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:35:11,319 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:35:11,320 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 14:35:11,321 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584604705] [2022-01-10 14:35:11,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:35:11,325 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 14:35:11,325 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:35:11,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 14:35:11,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 14:35:11,353 INFO L87 Difference]: Start difference. First operand has 12 states, 10 states have (on average 1.5) internal successors, (15), 11 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:35:11,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:35:11,370 INFO L93 Difference]: Finished difference Result 20 states and 23 transitions. [2022-01-10 14:35:11,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 14:35:11,372 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-01-10 14:35:11,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:35:11,376 INFO L225 Difference]: With dead ends: 20 [2022-01-10 14:35:11,376 INFO L226 Difference]: Without dead ends: 8 [2022-01-10 14:35:11,379 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 14:35:11,383 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 14:35:11,384 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 14:35:11,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2022-01-10 14:35:11,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2022-01-10 14:35:11,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:35:11,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2022-01-10 14:35:11,412 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 7 [2022-01-10 14:35:11,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:35:11,412 INFO L470 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2022-01-10 14:35:11,412 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:35:11,413 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2022-01-10 14:35:11,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-01-10 14:35:11,414 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:35:11,414 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-01-10 14:35:11,414 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 14:35:11,414 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 14:35:11,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:35:11,420 INFO L85 PathProgramCache]: Analyzing trace with hash 1973502215, now seen corresponding path program 1 times [2022-01-10 14:35:11,420 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:35:11,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169937088] [2022-01-10 14:35:11,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:35:11,420 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:35:11,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:35:11,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 14:35:11,494 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:35:11,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169937088] [2022-01-10 14:35:11,494 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169937088] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:35:11,494 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:35:11,495 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 14:35:11,495 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448973073] [2022-01-10 14:35:11,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:35:11,496 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 14:35:11,496 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:35:11,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 14:35:11,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:35:11,496 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:35:11,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:35:11,525 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2022-01-10 14:35:11,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 14:35:11,526 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-01-10 14:35:11,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:35:11,527 INFO L225 Difference]: With dead ends: 13 [2022-01-10 14:35:11,527 INFO L226 Difference]: Without dead ends: 9 [2022-01-10 14:35:11,531 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:35:11,532 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 0 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 14:35:11,533 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 10 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 14:35:11,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2022-01-10 14:35:11,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2022-01-10 14:35:11,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:35:11,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2022-01-10 14:35:11,541 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2022-01-10 14:35:11,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:35:11,541 INFO L470 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2022-01-10 14:35:11,541 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:35:11,541 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2022-01-10 14:35:11,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-01-10 14:35:11,542 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:35:11,542 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 14:35:11,542 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 14:35:11,542 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 14:35:11,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:35:11,543 INFO L85 PathProgramCache]: Analyzing trace with hash 1049859691, now seen corresponding path program 1 times [2022-01-10 14:35:11,543 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:35:11,543 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535702821] [2022-01-10 14:35:11,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:35:11,543 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:35:11,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:35:11,965 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 14:35:11,965 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:35:11,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535702821] [2022-01-10 14:35:11,966 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535702821] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 14:35:11,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [298444305] [2022-01-10 14:35:11,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:35:11,967 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 14:35:11,967 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 14:35:11,968 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 14:35:12,007 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-10 14:35:12,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:35:12,080 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 14 conjunts are in the unsatisfiable core [2022-01-10 14:35:12,083 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 14:35:12,466 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 14:35:12,466 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 14:35:12,592 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 14:35:12,592 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [298444305] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 14:35:12,592 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 14:35:12,592 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2022-01-10 14:35:12,592 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158696759] [2022-01-10 14:35:12,593 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 14:35:12,593 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-01-10 14:35:12,593 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:35:12,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-01-10 14:35:12,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2022-01-10 14:35:12,594 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 12 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 12 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:35:12,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:35:12,704 INFO L93 Difference]: Finished difference Result 17 states and 18 transitions. [2022-01-10 14:35:12,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 14:35:12,704 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 12 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-01-10 14:35:12,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:35:12,705 INFO L225 Difference]: With dead ends: 17 [2022-01-10 14:35:12,705 INFO L226 Difference]: Without dead ends: 11 [2022-01-10 14:35:12,705 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2022-01-10 14:35:12,706 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 5 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 14:35:12,706 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 30 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 14:35:12,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2022-01-10 14:35:12,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2022-01-10 14:35:12,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.1) internal successors, (11), 10 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:35:12,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2022-01-10 14:35:12,709 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 8 [2022-01-10 14:35:12,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:35:12,709 INFO L470 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2022-01-10 14:35:12,709 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 12 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:35:12,709 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2022-01-10 14:35:12,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-01-10 14:35:12,709 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:35:12,709 INFO L514 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 14:35:12,714 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-01-10 14:35:12,910 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 14:35:12,910 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 14:35:12,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:35:12,911 INFO L85 PathProgramCache]: Analyzing trace with hash -375490069, now seen corresponding path program 2 times [2022-01-10 14:35:12,911 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:35:12,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807075859] [2022-01-10 14:35:12,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:35:12,912 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:35:12,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:35:14,633 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 14:35:14,634 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:35:14,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807075859] [2022-01-10 14:35:14,634 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807075859] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 14:35:14,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1932700609] [2022-01-10 14:35:14,634 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-10 14:35:14,634 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 14:35:14,634 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 14:35:14,635 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 14:35:14,636 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-10 14:35:14,714 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-10 14:35:14,714 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-10 14:35:14,715 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 26 conjunts are in the unsatisfiable core [2022-01-10 14:35:14,716 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 14:35:15,318 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 14:35:15,318 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 14:35:20,983 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 14:35:20,983 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1932700609] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 14:35:20,983 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 14:35:20,983 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2022-01-10 14:35:20,983 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108187508] [2022-01-10 14:35:20,983 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 14:35:20,984 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-01-10 14:35:20,984 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:35:20,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-01-10 14:35:20,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=198, Unknown=1, NotChecked=0, Total=272 [2022-01-10 14:35:20,985 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand has 17 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 17 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:35:22,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:35:22,842 INFO L93 Difference]: Finished difference Result 20 states and 23 transitions. [2022-01-10 14:35:22,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-10 14:35:22,843 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 17 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-01-10 14:35:22,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:35:22,844 INFO L225 Difference]: With dead ends: 20 [2022-01-10 14:35:22,844 INFO L226 Difference]: Without dead ends: 15 [2022-01-10 14:35:22,844 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=107, Invalid=272, Unknown=1, NotChecked=0, Total=380 [2022-01-10 14:35:22,844 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 0 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 8 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-10 14:35:22,845 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 39 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 42 Invalid, 0 Unknown, 8 Unchecked, 0.6s Time] [2022-01-10 14:35:22,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2022-01-10 14:35:22,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2022-01-10 14:35:22,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.0714285714285714) internal successors, (15), 14 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:35:22,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2022-01-10 14:35:22,848 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 10 [2022-01-10 14:35:22,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:35:22,848 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2022-01-10 14:35:22,849 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 17 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:35:22,849 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2022-01-10 14:35:22,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-01-10 14:35:22,849 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:35:22,849 INFO L514 BasicCegarLoop]: trace histogram [7, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 14:35:22,854 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-10 14:35:23,049 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-01-10 14:35:23,050 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 14:35:23,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:35:23,051 INFO L85 PathProgramCache]: Analyzing trace with hash -1720999701, now seen corresponding path program 3 times [2022-01-10 14:35:23,051 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:35:23,051 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013708339] [2022-01-10 14:35:23,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:35:23,051 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:35:23,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:35:31,460 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 14:35:31,460 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:35:31,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013708339] [2022-01-10 14:35:31,461 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013708339] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 14:35:31,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1300714811] [2022-01-10 14:35:31,461 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-10 14:35:31,461 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 14:35:31,461 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 14:35:31,467 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) [2022-01-10 14:35:31,468 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-01-10 14:35:32,914 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-01-10 14:35:32,914 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-10 14:35:32,917 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 60 conjunts are in the unsatisfiable core [2022-01-10 14:35:32,919 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 14:35:34,563 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 14:35:34,563 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 14:36:20,568 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse6 (+ |c_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int| 1))) (let ((.cse7 (mod .cse6 4294967296))) (let ((.cse3 (+ 1 .cse7))) (let ((.cse4 (mod .cse3 4294967296))) (let ((.cse5 (+ (mod (+ (mod (+ (mod (+ .cse4 1) 4294967296) 1) 4294967296) 1) 4294967296) 1))) (let ((.cse2 (mod .cse5 4294967296)) (.cse1 (* 2 (mod |c_ULTIMATE.start_ULTIMATE.start_main_~n~0#1Int| 2147483648)))) (or (= (mod (+ (mod (+ (mod (+ (mod (+ (mod (+ (mod (+ (mod (+ |c_ULTIMATE.start_ULTIMATE.start_main_~k~0#1Int| 1) 4294967296) 1) 4294967296) 1) 4294967296) 1) 4294967296) 1) 4294967296) 1) 4294967296) 1) 4294967296) |c_ULTIMATE.start_ULTIMATE.start_main_~n~0#1Int|) (let ((.cse0 (+ .cse2 1))) (< (+ |c_ULTIMATE.start_ULTIMATE.start_main_~n~0#1Int| (* 2 (mod .cse0 2147483648))) (+ .cse1 (mod .cse0 4294967296)))) (not (< (+ |c_ULTIMATE.start_ULTIMATE.start_main_~n~0#1Int| (* 2 (mod .cse3 2147483648))) (+ .cse1 .cse4))) (<= (+ .cse1 .cse2) (+ |c_ULTIMATE.start_ULTIMATE.start_main_~n~0#1Int| (* (mod .cse5 2147483648) 2))) (not (< (+ |c_ULTIMATE.start_ULTIMATE.start_main_~n~0#1Int| (* 2 (mod .cse6 2147483648))) (+ .cse1 .cse7)))))))))) is different from true [2022-01-10 14:36:20,692 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 7 not checked. [2022-01-10 14:36:20,693 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1300714811] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 14:36:20,693 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 14:36:20,693 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 30 [2022-01-10 14:36:20,693 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061891972] [2022-01-10 14:36:20,693 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 14:36:20,695 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-01-10 14:36:20,695 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:36:20,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-01-10 14:36:20,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=616, Unknown=13, NotChecked=54, Total=870 [2022-01-10 14:36:20,696 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 30 states, 30 states have (on average 1.1333333333333333) internal successors, (34), 30 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)