/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/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf -i ../../../trunk/examples/svcomp/loop-industry-pattern/mod3.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-b030c9e [2022-03-20 13:16:08,917 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-20 13:16:08,919 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-20 13:16:08,953 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-03-20 13:16:08,953 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-03-20 13:16:08,956 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-03-20 13:16:08,960 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-03-20 13:16:08,965 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-03-20 13:16:08,967 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-03-20 13:16:08,971 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-03-20 13:16:08,972 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-03-20 13:16:08,973 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-03-20 13:16:08,973 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-20 13:16:08,975 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-20 13:16:08,976 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-20 13:16:08,977 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-20 13:16:08,978 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-20 13:16:08,979 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-20 13:16:08,980 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-20 13:16:08,981 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-20 13:16:08,982 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-03-20 13:16:08,983 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-20 13:16:08,984 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-20 13:16:08,984 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-20 13:16:08,985 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-20 13:16:08,987 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-03-20 13:16:08,987 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-03-20 13:16:08,988 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-03-20 13:16:08,988 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-03-20 13:16:08,989 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-03-20 13:16:08,989 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-03-20 13:16:08,990 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-03-20 13:16:08,990 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-03-20 13:16:08,991 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-03-20 13:16:08,991 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-03-20 13:16:08,992 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-03-20 13:16:08,992 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-03-20 13:16:08,993 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-03-20 13:16:08,993 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-03-20 13:16:08,993 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-20 13:16:08,994 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-20 13:16:08,995 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-20 13:16:08,995 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf [2022-03-20 13:16:09,008 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-20 13:16:09,009 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-20 13:16:09,012 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-20 13:16:09,012 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-20 13:16:09,012 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-20 13:16:09,012 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-20 13:16:09,012 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-20 13:16:09,012 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-20 13:16:09,012 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-20 13:16:09,013 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-20 13:16:09,013 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-20 13:16:09,013 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-20 13:16:09,013 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-20 13:16:09,014 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-20 13:16:09,014 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-20 13:16:09,014 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-20 13:16:09,014 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-20 13:16:09,014 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-20 13:16:09,014 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-20 13:16:09,014 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-20 13:16:09,014 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2022-03-20 13:16:09,015 INFO L138 SettingsManager]: * Trace refinement strategy=ACCELERATED_INTERPOLATION [2022-03-20 13:16:09,015 INFO L138 SettingsManager]: * Trace refinement strategy used in Accelerated Interpolation=CAMEL [2022-03-20 13:16:09,015 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-20 13:16:09,015 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2022-03-20 13:16:09,015 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-03-20 13:16:09,239 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-20 13:16:09,260 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-20 13:16:09,262 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-20 13:16:09,263 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-20 13:16:09,264 INFO L275 PluginConnector]: CDTParser initialized [2022-03-20 13:16:09,265 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-industry-pattern/mod3.c.v+lhb-reducer.c [2022-03-20 13:16:09,330 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dce4ab7cc/6d903a8effc1461f91ed4f0368eef934/FLAG5961a7acc [2022-03-20 13:16:09,675 INFO L306 CDTParser]: Found 1 translation units. [2022-03-20 13:16:09,676 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-industry-pattern/mod3.c.v+lhb-reducer.c [2022-03-20 13:16:09,683 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dce4ab7cc/6d903a8effc1461f91ed4f0368eef934/FLAG5961a7acc [2022-03-20 13:16:09,693 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dce4ab7cc/6d903a8effc1461f91ed4f0368eef934 [2022-03-20 13:16:09,695 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-20 13:16:09,696 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-03-20 13:16:09,697 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-20 13:16:09,698 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-20 13:16:09,702 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-20 13:16:09,703 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.03 01:16:09" (1/1) ... [2022-03-20 13:16:09,704 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73e421f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 01:16:09, skipping insertion in model container [2022-03-20 13:16:09,704 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.03 01:16:09" (1/1) ... [2022-03-20 13:16:09,710 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-20 13:16:09,726 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-20 13:16:09,853 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-industry-pattern/mod3.c.v+lhb-reducer.c[2265,2278] [2022-03-20 13:16:09,885 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-20 13:16:09,893 INFO L203 MainTranslator]: Completed pre-run [2022-03-20 13:16:09,906 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-industry-pattern/mod3.c.v+lhb-reducer.c[2265,2278] [2022-03-20 13:16:09,909 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-20 13:16:09,920 INFO L208 MainTranslator]: Completed translation [2022-03-20 13:16:09,920 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 01:16:09 WrapperNode [2022-03-20 13:16:09,921 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-20 13:16:09,921 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-20 13:16:09,921 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-20 13:16:09,922 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-20 13:16:09,930 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 01:16:09" (1/1) ... [2022-03-20 13:16:09,930 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 01:16:09" (1/1) ... [2022-03-20 13:16:09,934 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 01:16:09" (1/1) ... [2022-03-20 13:16:09,934 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 01:16:09" (1/1) ... [2022-03-20 13:16:09,946 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 01:16:09" (1/1) ... [2022-03-20 13:16:09,947 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 01:16:09" (1/1) ... [2022-03-20 13:16:09,948 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 01:16:09" (1/1) ... [2022-03-20 13:16:09,950 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-20 13:16:09,951 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-20 13:16:09,951 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-20 13:16:09,951 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-20 13:16:09,954 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 01:16:09" (1/1) ... [2022-03-20 13:16:09,969 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-20 13:16:09,981 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 13:16:09,991 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-03-20 13:16:10,015 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-03-20 13:16:10,037 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-03-20 13:16:10,037 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-20 13:16:10,038 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-03-20 13:16:10,038 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-03-20 13:16:10,038 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-03-20 13:16:10,038 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-03-20 13:16:10,038 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-03-20 13:16:10,038 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-20 13:16:10,038 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-03-20 13:16:10,039 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-03-20 13:16:10,039 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-03-20 13:16:10,039 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-03-20 13:16:10,040 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-20 13:16:10,040 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-20 13:16:10,040 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-20 13:16:10,040 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-20 13:16:10,040 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-20 13:16:10,097 INFO L234 CfgBuilder]: Building ICFG [2022-03-20 13:16:10,099 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-20 13:16:18,909 INFO L275 CfgBuilder]: Performing block encoding [2022-03-20 13:16:18,914 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-20 13:16:18,914 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-03-20 13:16:18,916 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.03 01:16:18 BoogieIcfgContainer [2022-03-20 13:16:18,916 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-20 13:16:18,917 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-20 13:16:18,917 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-20 13:16:18,920 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-20 13:16:18,920 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.03 01:16:09" (1/3) ... [2022-03-20 13:16:18,921 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f83c533 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.03 01:16:18, skipping insertion in model container [2022-03-20 13:16:18,921 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 01:16:09" (2/3) ... [2022-03-20 13:16:18,921 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f83c533 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.03 01:16:18, skipping insertion in model container [2022-03-20 13:16:18,921 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.03 01:16:18" (3/3) ... [2022-03-20 13:16:18,922 INFO L111 eAbstractionObserver]: Analyzing ICFG mod3.c.v+lhb-reducer.c [2022-03-20 13:16:18,926 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-03-20 13:16:18,926 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-20 13:16:18,957 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-20 13:16:18,964 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=Craig_NestedInterpolation, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP [2022-03-20 13:16:18,964 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-03-20 13:16:18,975 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 22 states have (on average 1.5) internal successors, (33), 23 states have internal predecessors, (33), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-03-20 13:16:18,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-03-20 13:16:18,981 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 13:16:18,981 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 13:16:18,982 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 13:16:18,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 13:16:18,985 INFO L85 PathProgramCache]: Analyzing trace with hash 1261463571, now seen corresponding path program 1 times [2022-03-20 13:16:18,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 13:16:18,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [596466655] [2022-03-20 13:16:19,000 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-20 13:16:19,000 INFO L85 PathProgramCache]: Analyzing trace with hash 1261463571, now seen corresponding path program 2 times [2022-03-20 13:16:19,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 13:16:19,003 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114922240] [2022-03-20 13:16:19,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 13:16:19,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 13:16:19,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 13:16:19,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 13:16:19,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 13:16:19,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 13:16:19,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 13:16:19,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114922240] [2022-03-20 13:16:19,515 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114922240] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 13:16:19,516 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 13:16:19,516 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-20 13:16:19,519 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 13:16:19,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [596466655] [2022-03-20 13:16:19,520 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [596466655] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 13:16:19,520 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 13:16:19,520 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-20 13:16:19,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346554341] [2022-03-20 13:16:19,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 13:16:19,525 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-20 13:16:19,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 13:16:19,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-20 13:16:19,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-03-20 13:16:19,552 INFO L87 Difference]: Start difference. First operand has 28 states, 22 states have (on average 1.5) internal successors, (33), 23 states have internal predecessors, (33), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 6 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 13:16:21,699 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-20 13:16:23,903 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-20 13:16:26,061 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-20 13:16:28,221 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-20 13:16:30,530 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-20 13:16:32,667 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-20 13:16:34,842 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-20 13:16:37,010 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-20 13:16:39,340 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-20 13:16:39,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 13:16:39,508 INFO L93 Difference]: Finished difference Result 85 states and 119 transitions. [2022-03-20 13:16:39,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-20 13:16:39,511 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2022-03-20 13:16:39,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 13:16:39,517 INFO L225 Difference]: With dead ends: 85 [2022-03-20 13:16:39,517 INFO L226 Difference]: Without dead ends: 45 [2022-03-20 13:16:39,519 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-03-20 13:16:39,522 INFO L913 BasicCegarLoop]: 32 mSDtfsCounter, 34 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 7 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.7s IncrementalHoareTripleChecker+Time [2022-03-20 13:16:39,523 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 106 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 108 Invalid, 9 Unknown, 0 Unchecked, 19.7s Time] [2022-03-20 13:16:39,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2022-03-20 13:16:39,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 32. [2022-03-20 13:16:39,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 28 states have (on average 1.2857142857142858) internal successors, (36), 28 states have internal predecessors, (36), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 13:16:39,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 39 transitions. [2022-03-20 13:16:39,559 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 39 transitions. Word has length 15 [2022-03-20 13:16:39,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 13:16:39,559 INFO L478 AbstractCegarLoop]: Abstraction has 32 states and 39 transitions. [2022-03-20 13:16:39,560 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 13:16:39,560 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 39 transitions. [2022-03-20 13:16:39,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-03-20 13:16:39,560 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 13:16:39,561 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 13:16:39,561 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-20 13:16:39,561 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 13:16:39,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 13:16:39,562 INFO L85 PathProgramCache]: Analyzing trace with hash 489359351, now seen corresponding path program 1 times [2022-03-20 13:16:39,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 13:16:39,562 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1287932214] [2022-03-20 13:16:39,568 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-20 13:16:39,569 INFO L85 PathProgramCache]: Analyzing trace with hash 489359351, now seen corresponding path program 2 times [2022-03-20 13:16:39,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 13:16:39,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878986599] [2022-03-20 13:16:39,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 13:16:39,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 13:16:39,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 13:16:40,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 13:16:40,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 13:16:40,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 13:16:40,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 13:16:40,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878986599] [2022-03-20 13:16:40,042 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878986599] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 13:16:40,042 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 13:16:40,042 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-20 13:16:40,042 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 13:16:40,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1287932214] [2022-03-20 13:16:40,043 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1287932214] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 13:16:40,047 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 13:16:40,047 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-20 13:16:40,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564820570] [2022-03-20 13:16:40,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 13:16:40,048 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-20 13:16:40,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 13:16:40,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-20 13:16:40,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-03-20 13:16:40,049 INFO L87 Difference]: Start difference. First operand 32 states and 39 transitions. Second operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 13:16:42,168 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-20 13:16:44,340 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-20 13:16:46,561 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-20 13:16:48,749 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-20 13:16:50,912 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-20 13:16:53,084 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-20 13:16:55,243 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-20 13:16:57,398 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-20 13:16:59,569 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-20 13:17:01,723 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-20 13:17:03,884 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-20 13:17:06,038 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-20 13:17:08,185 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-20 13:17:08,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 13:17:08,355 INFO L93 Difference]: Finished difference Result 58 states and 75 transitions. [2022-03-20 13:17:08,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-20 13:17:08,356 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2022-03-20 13:17:08,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 13:17:08,357 INFO L225 Difference]: With dead ends: 58 [2022-03-20 13:17:08,357 INFO L226 Difference]: Without dead ends: 38 [2022-03-20 13:17:08,357 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-03-20 13:17:08,358 INFO L913 BasicCegarLoop]: 25 mSDtfsCounter, 8 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 2 mSolverCounterUnsat, 13 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 13 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.2s IncrementalHoareTripleChecker+Time [2022-03-20 13:17:08,359 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 80 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 62 Invalid, 13 Unknown, 0 Unchecked, 28.2s Time] [2022-03-20 13:17:08,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2022-03-20 13:17:08,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 37. [2022-03-20 13:17:08,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 33 states have (on average 1.2727272727272727) internal successors, (42), 33 states have internal predecessors, (42), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 13:17:08,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 45 transitions. [2022-03-20 13:17:08,370 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 45 transitions. Word has length 16 [2022-03-20 13:17:08,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 13:17:08,370 INFO L478 AbstractCegarLoop]: Abstraction has 37 states and 45 transitions. [2022-03-20 13:17:08,370 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 13:17:08,371 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 45 transitions. [2022-03-20 13:17:08,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-20 13:17:08,371 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 13:17:08,371 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 13:17:08,372 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-20 13:17:08,372 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 13:17:08,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 13:17:08,372 INFO L85 PathProgramCache]: Analyzing trace with hash 2056507864, now seen corresponding path program 1 times [2022-03-20 13:17:08,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 13:17:08,373 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [171087689] [2022-03-20 13:17:08,373 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-20 13:17:08,373 INFO L85 PathProgramCache]: Analyzing trace with hash 2056507864, now seen corresponding path program 2 times [2022-03-20 13:17:08,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 13:17:08,374 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238502919] [2022-03-20 13:17:08,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 13:17:08,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 13:17:08,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 13:17:08,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 13:17:08,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 13:17:08,565 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 13:17:08,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 13:17:08,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238502919] [2022-03-20 13:17:08,566 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238502919] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 13:17:08,566 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 13:17:08,566 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-20 13:17:08,566 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 13:17:08,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [171087689] [2022-03-20 13:17:08,567 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [171087689] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 13:17:08,567 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 13:17:08,567 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-20 13:17:08,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622725685] [2022-03-20 13:17:08,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 13:17:08,567 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-20 13:17:08,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 13:17:08,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-20 13:17:08,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-20 13:17:08,568 INFO L87 Difference]: Start difference. First operand 37 states and 45 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 13:17:10,593 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-20 13:17:12,753 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-20 13:17:14,915 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-20 13:17:17,077 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-20 13:17:19,251 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-20 13:17:21,425 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-20 13:17:23,628 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-20 13:17:25,806 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-20 13:17:27,968 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-20 13:17:30,140 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-20 13:17:32,377 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-20 13:17:34,541 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-20 13:17:36,716 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-20 13:17:38,832 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-20 13:17:38,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 13:17:38,977 INFO L93 Difference]: Finished difference Result 64 states and 83 transitions. [2022-03-20 13:17:38,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-20 13:17:38,977 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 21 [2022-03-20 13:17:38,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 13:17:38,978 INFO L225 Difference]: With dead ends: 64 [2022-03-20 13:17:38,978 INFO L226 Difference]: Without dead ends: 44 [2022-03-20 13:17:38,979 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-03-20 13:17:38,980 INFO L913 BasicCegarLoop]: 32 mSDtfsCounter, 9 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 3 mSolverCounterUnsat, 14 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 14 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30.4s IncrementalHoareTripleChecker+Time [2022-03-20 13:17:38,980 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 70 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 55 Invalid, 14 Unknown, 0 Unchecked, 30.4s Time] [2022-03-20 13:17:38,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2022-03-20 13:17:38,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 38. [2022-03-20 13:17:38,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 34 states have (on average 1.2647058823529411) internal successors, (43), 34 states have internal predecessors, (43), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 13:17:38,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 46 transitions. [2022-03-20 13:17:38,991 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 46 transitions. Word has length 21 [2022-03-20 13:17:38,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 13:17:38,992 INFO L478 AbstractCegarLoop]: Abstraction has 38 states and 46 transitions. [2022-03-20 13:17:38,992 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 13:17:38,992 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 46 transitions. [2022-03-20 13:17:38,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-20 13:17:38,993 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 13:17:38,993 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 13:17:38,993 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-03-20 13:17:38,993 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 13:17:38,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 13:17:38,994 INFO L85 PathProgramCache]: Analyzing trace with hash 7180197, now seen corresponding path program 1 times [2022-03-20 13:17:38,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 13:17:38,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [976873076] [2022-03-20 13:17:38,995 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-20 13:17:38,995 INFO L85 PathProgramCache]: Analyzing trace with hash 7180197, now seen corresponding path program 2 times [2022-03-20 13:17:38,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 13:17:38,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734658002] [2022-03-20 13:17:38,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 13:17:38,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 13:17:39,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 13:17:39,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 13:17:39,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 13:17:39,127 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-20 13:17:39,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 13:17:39,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734658002] [2022-03-20 13:17:39,128 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734658002] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 13:17:39,128 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 13:17:39,128 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-20 13:17:39,128 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 13:17:39,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [976873076] [2022-03-20 13:17:39,128 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [976873076] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 13:17:39,129 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 13:17:39,129 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-20 13:17:39,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270591231] [2022-03-20 13:17:39,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 13:17:39,129 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-20 13:17:39,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 13:17:39,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-20 13:17:39,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-20 13:17:39,130 INFO L87 Difference]: Start difference. First operand 38 states and 46 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 13:17:41,155 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-20 13:17:43,321 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-20 13:17:45,491 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-20 13:17:47,656 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-20 13:17:49,828 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-20 13:17:51,986 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-20 13:17:54,183 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-20 13:17:56,349 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-20 13:17:58,515 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-20 13:18:00,670 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-20 13:18:02,784 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-20 13:18:04,964 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-20 13:18:07,126 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-20 13:18:09,324 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-20 13:18:11,508 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-20 13:18:11,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 13:18:11,679 INFO L93 Difference]: Finished difference Result 74 states and 93 transitions. [2022-03-20 13:18:11,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-20 13:18:11,680 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 21 [2022-03-20 13:18:11,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 13:18:11,681 INFO L225 Difference]: With dead ends: 74 [2022-03-20 13:18:11,681 INFO L226 Difference]: Without dead ends: 49 [2022-03-20 13:18:11,681 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-03-20 13:18:11,682 INFO L913 BasicCegarLoop]: 25 mSDtfsCounter, 9 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 3 mSolverCounterUnsat, 15 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 15 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 32.5s IncrementalHoareTripleChecker+Time [2022-03-20 13:18:11,683 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 58 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 49 Invalid, 15 Unknown, 0 Unchecked, 32.5s Time] [2022-03-20 13:18:11,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2022-03-20 13:18:11,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 38. [2022-03-20 13:18:11,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 34 states have (on average 1.2647058823529411) internal successors, (43), 34 states have internal predecessors, (43), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 13:18:11,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 46 transitions. [2022-03-20 13:18:11,693 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 46 transitions. Word has length 21 [2022-03-20 13:18:11,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 13:18:11,694 INFO L478 AbstractCegarLoop]: Abstraction has 38 states and 46 transitions. [2022-03-20 13:18:11,694 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 13:18:11,694 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 46 transitions. [2022-03-20 13:18:11,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-03-20 13:18:11,695 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 13:18:11,695 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 13:18:11,695 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-03-20 13:18:11,695 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 13:18:11,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 13:18:11,695 INFO L85 PathProgramCache]: Analyzing trace with hash 261280421, now seen corresponding path program 1 times [2022-03-20 13:18:11,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 13:18:11,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [518077602] [2022-03-20 13:18:11,696 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-20 13:18:11,696 INFO L85 PathProgramCache]: Analyzing trace with hash 261280421, now seen corresponding path program 2 times [2022-03-20 13:18:11,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 13:18:11,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285216682] [2022-03-20 13:18:11,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 13:18:11,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 13:18:11,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 13:18:11,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 13:18:11,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 13:18:11,895 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-03-20 13:18:11,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 13:18:11,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285216682] [2022-03-20 13:18:11,896 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285216682] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 13:18:11,896 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 13:18:11,896 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-20 13:18:11,896 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 13:18:11,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [518077602] [2022-03-20 13:18:11,896 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [518077602] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 13:18:11,896 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 13:18:11,897 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-20 13:18:11,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263537244] [2022-03-20 13:18:11,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 13:18:11,898 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-20 13:18:11,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 13:18:11,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-20 13:18:11,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-20 13:18:11,898 INFO L87 Difference]: Start difference. First operand 38 states and 46 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 13:18:13,922 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-20 13:18:16,084 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-20 13:18:18,240 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-20 13:18:20,409 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-20 13:18:22,596 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-20 13:18:24,764 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-20 13:18:26,921 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-20 13:18:27,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 13:18:27,160 INFO L93 Difference]: Finished difference Result 60 states and 77 transitions. [2022-03-20 13:18:27,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-20 13:18:27,161 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 22 [2022-03-20 13:18:27,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 13:18:27,161 INFO L225 Difference]: With dead ends: 60 [2022-03-20 13:18:27,161 INFO L226 Difference]: Without dead ends: 0 [2022-03-20 13:18:27,162 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-03-20 13:18:27,162 INFO L913 BasicCegarLoop]: 27 mSDtfsCounter, 9 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 3 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.2s IncrementalHoareTripleChecker+Time [2022-03-20 13:18:27,163 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 57 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 51 Invalid, 7 Unknown, 0 Unchecked, 15.2s Time] [2022-03-20 13:18:27,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-03-20 13:18:27,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-03-20 13:18:27,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2022-03-20 13:18:27,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-03-20 13:18:27,164 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 22 [2022-03-20 13:18:27,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 13:18:27,164 INFO L478 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-03-20 13:18:27,164 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 13:18:27,164 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-03-20 13:18:27,164 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-03-20 13:18:27,166 INFO L788 garLoopResultBuilder]: Registering result SAFE for location mainErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-03-20 13:18:27,170 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-03-20 13:18:27,171 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-03-20 13:18:27,329 INFO L882 garLoopResultBuilder]: For program point reach_errorEXIT(line 4) no Hoare annotation was computed. [2022-03-20 13:18:27,329 INFO L882 garLoopResultBuilder]: For program point reach_errorENTRY(line 4) no Hoare annotation was computed. [2022-03-20 13:18:27,329 INFO L882 garLoopResultBuilder]: For program point reach_errorFINAL(line 4) no Hoare annotation was computed. [2022-03-20 13:18:27,330 INFO L878 garLoopResultBuilder]: At program point L97(lines 97 106) the Hoare annotation is: (and (not (= main_~__VERIFIER_assert__cond~0 0)) (<= main_~main__x~0 (let ((.cse0 (div main_~main__x~0 4294967296))) (let ((.cse2 (* .cse0 (- 4294967296)))) (let ((.cse1 (div (+ .cse2 main_~main__x~0) 3))) (+ (* .cse0 4294967296) (* 3 .cse1) (* (div (+ .cse2 (* (- 3) .cse1) main_~main__x~0) 4294967296) 4294967296))))))) [2022-03-20 13:18:27,330 INFO L878 garLoopResultBuilder]: At program point L122(lines 25 145) the Hoare annotation is: (<= main_~main__x~0 (let ((.cse0 (div main_~main__x~0 4294967296))) (let ((.cse2 (* .cse0 (- 4294967296)))) (let ((.cse1 (div (+ .cse2 main_~main__x~0) 3))) (+ (* .cse0 4294967296) (* 3 .cse1) (* (div (+ .cse2 (* (- 3) .cse1) main_~main__x~0) 4294967296) 4294967296)))))) [2022-03-20 13:18:27,330 INFO L885 garLoopResultBuilder]: At program point mainEXIT(lines 16 151) the Hoare annotation is: true [2022-03-20 13:18:27,330 INFO L878 garLoopResultBuilder]: At program point L56(lines 26 114) the Hoare annotation is: (<= (* 2863311531 main_~main__x~0) (let ((.cse2 (div main_~main__x~0 4294967296))) (let ((.cse0 (* .cse2 (- 4294967296)))) (let ((.cse1 (div (+ .cse0 main_~main__x~0) 3))) (+ (* 12297829383904690176 (div (+ .cse0 (* (- 3) .cse1) main_~main__x~0) 4294967296)) 1431655766 (* 12297829383904690176 .cse2) (* 8589934592 .cse1)))))) [2022-03-20 13:18:27,331 INFO L885 garLoopResultBuilder]: At program point L23(lines 23 150) the Hoare annotation is: true [2022-03-20 13:18:27,331 INFO L878 garLoopResultBuilder]: At program point L48(lines 48 85) the Hoare annotation is: (<= (* 2863311531 main_~main__x~0) (let ((.cse2 (div main_~main__x~0 4294967296))) (let ((.cse0 (* .cse2 (- 4294967296)))) (let ((.cse1 (div (+ .cse0 main_~main__x~0) 3))) (+ (* 12297829383904690176 (div (+ .cse0 (* (- 3) .cse1) main_~main__x~0) 4294967296)) 1431655766 (* 12297829383904690176 .cse2) (* 8589934592 .cse1)))))) [2022-03-20 13:18:27,331 INFO L878 garLoopResultBuilder]: At program point L44(lines 26 114) the Hoare annotation is: (<= main_~main__x~0 (let ((.cse0 (div main_~main__x~0 4294967296))) (let ((.cse2 (* .cse0 (- 4294967296)))) (let ((.cse1 (div (+ .cse2 main_~main__x~0) 3))) (+ (* .cse0 4294967296) (* 3 .cse1) (* (div (+ .cse2 (* (- 3) .cse1) main_~main__x~0) 4294967296) 4294967296)))))) [2022-03-20 13:18:27,331 INFO L878 garLoopResultBuilder]: At program point L90(lines 90 112) the Hoare annotation is: (<= (* 2863311531 main_~main__x~0) (let ((.cse2 (div main_~main__x~0 4294967296))) (let ((.cse0 (* .cse2 (- 4294967296)))) (let ((.cse1 (div (+ .cse0 main_~main__x~0) 3))) (+ (* 12297829383904690176 (div (+ .cse0 (* (- 3) .cse1) main_~main__x~0) 4294967296)) 1431655766 (* 12297829383904690176 .cse2) (* 8589934592 .cse1)))))) [2022-03-20 13:18:27,331 INFO L878 garLoopResultBuilder]: At program point L37(lines 37 113) the Hoare annotation is: (<= (* 2863311531 main_~main__x~0) (let ((.cse2 (div main_~main__x~0 4294967296))) (let ((.cse0 (* .cse2 (- 4294967296)))) (let ((.cse1 (div (+ .cse0 main_~main__x~0) 3))) (+ (* 12297829383904690176 (div (+ .cse0 (* (- 3) .cse1) main_~main__x~0) 4294967296)) 1431655766 (* 12297829383904690176 .cse2) (* 8589934592 .cse1)))))) [2022-03-20 13:18:27,331 INFO L878 garLoopResultBuilder]: At program point L99(line 99) the Hoare annotation is: false [2022-03-20 13:18:27,331 INFO L885 garLoopResultBuilder]: At program point L128(lines 128 143) the Hoare annotation is: true [2022-03-20 13:18:27,332 INFO L885 garLoopResultBuilder]: At program point L62(lines 62 84) the Hoare annotation is: true [2022-03-20 13:18:27,332 INFO L885 garLoopResultBuilder]: At program point L25(lines 25 145) the Hoare annotation is: true [2022-03-20 13:18:27,332 INFO L885 garLoopResultBuilder]: At program point L83(lines 17 151) the Hoare annotation is: true [2022-03-20 13:18:27,332 INFO L885 garLoopResultBuilder]: At program point mainFINAL(lines 16 151) the Hoare annotation is: true [2022-03-20 13:18:27,332 INFO L878 garLoopResultBuilder]: At program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 99) the Hoare annotation is: false [2022-03-20 13:18:27,332 INFO L878 garLoopResultBuilder]: At program point mainENTRY(lines 16 151) the Hoare annotation is: (and (= ~__tmp_91_0~0 |old(~__tmp_91_0~0)|) (= ~__tmp_91_1~0 |old(~__tmp_91_1~0)|) (= ~__tmp_88_1~0 |old(~__tmp_88_1~0)|) (= ~__tmp_94_0~0 |old(~__tmp_94_0~0)|) (= ~__tmp_88_0~0 |old(~__tmp_88_0~0)|) (= |old(~__tmp_112_0~0)| ~__tmp_112_0~0) (= |old(~__return_121~0)| ~__return_121~0) (= ~__tmp_93_0~0 |old(~__tmp_93_0~0)|)) [2022-03-20 13:18:27,332 INFO L885 garLoopResultBuilder]: At program point L117(lines 117 144) the Hoare annotation is: true [2022-03-20 13:18:27,333 INFO L885 garLoopResultBuilder]: At program point L142(lines 25 145) the Hoare annotation is: true [2022-03-20 13:18:27,333 INFO L878 garLoopResultBuilder]: At program point L39(lines 39 86) the Hoare annotation is: (<= (* 2863311531 main_~main__x~0) (let ((.cse2 (div main_~main__x~0 4294967296))) (let ((.cse0 (* .cse2 (- 4294967296)))) (let ((.cse1 (div (+ .cse0 main_~main__x~0) 3))) (+ (* 12297829383904690176 (div (+ .cse0 (* (- 3) .cse1) main_~main__x~0) 4294967296)) 1431655766 (* 12297829383904690176 .cse2) (* 8589934592 .cse1)))))) [2022-03-20 13:18:27,333 INFO L885 garLoopResultBuilder]: At program point L134(lines 25 145) the Hoare annotation is: true [2022-03-20 13:18:27,333 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2022-03-20 13:18:27,333 INFO L878 garLoopResultBuilder]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= ~__tmp_91_0~0 |old(~__tmp_91_0~0)|) (= ~__tmp_91_1~0 |old(~__tmp_91_1~0)|) (= ~__return_main~0 |old(~__return_main~0)|) (= ~__tmp_88_1~0 |old(~__tmp_88_1~0)|) (= ~__tmp_94_0~0 |old(~__tmp_94_0~0)|) (= ~__tmp_88_0~0 |old(~__tmp_88_0~0)|) (= |old(~__tmp_112_0~0)| ~__tmp_112_0~0) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(~__return_121~0)| ~__return_121~0) (= ~__tmp_93_0~0 |old(~__tmp_93_0~0)|) (= |old(#NULL.base)| |#NULL.base|)) [2022-03-20 13:18:27,333 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2022-03-20 13:18:27,333 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2022-03-20 13:18:27,334 INFO L885 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: true [2022-03-20 13:18:27,334 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2022-03-20 13:18:27,334 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2022-03-20 13:18:27,336 INFO L719 BasicCegarLoop]: Path program histogram: [2, 2, 2, 2, 2] [2022-03-20 13:18:27,337 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-20 13:18:27,350 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.03 01:18:27 BoogieIcfgContainer [2022-03-20 13:18:27,350 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-20 13:18:27,350 INFO L158 Benchmark]: Toolchain (without parser) took 137654.43ms. Allocated memory was 194.0MB in the beginning and 240.1MB in the end (delta: 46.1MB). Free memory was 143.1MB in the beginning and 204.5MB in the end (delta: -61.4MB). There was no memory consumed. Max. memory is 8.0GB. [2022-03-20 13:18:27,351 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 194.0MB. Free memory is still 159.8MB. There was no memory consumed. Max. memory is 8.0GB. [2022-03-20 13:18:27,351 INFO L158 Benchmark]: CACSL2BoogieTranslator took 223.53ms. Allocated memory was 194.0MB in the beginning and 240.1MB in the end (delta: 46.1MB). Free memory was 142.9MB in the beginning and 217.0MB in the end (delta: -74.1MB). Peak memory consumption was 13.4MB. Max. memory is 8.0GB. [2022-03-20 13:18:27,351 INFO L158 Benchmark]: Boogie Preprocessor took 28.95ms. Allocated memory is still 240.1MB. Free memory was 217.0MB in the beginning and 215.5MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-20 13:18:27,352 INFO L158 Benchmark]: RCFGBuilder took 8964.87ms. Allocated memory is still 240.1MB. Free memory was 215.5MB in the beginning and 202.9MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2022-03-20 13:18:27,352 INFO L158 Benchmark]: TraceAbstraction took 128432.76ms. Allocated memory is still 240.1MB. Free memory was 202.4MB in the beginning and 204.5MB in the end (delta: -2.1MB). There was no memory consumed. Max. memory is 8.0GB. [2022-03-20 13:18:27,353 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 194.0MB. Free memory is still 159.8MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 223.53ms. Allocated memory was 194.0MB in the beginning and 240.1MB in the end (delta: 46.1MB). Free memory was 142.9MB in the beginning and 217.0MB in the end (delta: -74.1MB). Peak memory consumption was 13.4MB. Max. memory is 8.0GB. * Boogie Preprocessor took 28.95ms. Allocated memory is still 240.1MB. Free memory was 217.0MB in the beginning and 215.5MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 8964.87ms. Allocated memory is still 240.1MB. Free memory was 215.5MB in the beginning and 202.9MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * TraceAbstraction took 128432.76ms. Allocated memory is still 240.1MB. Free memory was 202.4MB in the beginning and 204.5MB in the end (delta: -2.1MB). 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 - PositiveResult [Line: 99]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 31 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 128.4s, OverallIterations: 5, TraceHistogramMax: 2, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 126.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 58 mSolverCounterUnknown, 69 SdHoareTripleChecker+Valid, 126.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 69 mSDsluCounter, 371 SdHoareTripleChecker+Invalid, 117.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 230 mSDsCounter, 18 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 325 IncrementalHoareTripleChecker+Invalid, 401 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 18 mSolverCounterUnsat, 141 mSDtfsCounter, 325 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 47 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=38occurred in iteration=3, InterpolantAutomatonStates: 30, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 31 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 28 LocationsWithAnnotation, 28 PreInvPairs, 72 NumberOfFragments, 425 HoareAnnotationTreeSize, 28 FomulaSimplifications, 512 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 28 FomulaSimplificationsInter, 260 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: No data available, 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 26]: Loop Invariant Derived loop invariant: main__x <= main__x / 4294967296 * 4294967296 + 3 * ((main__x / 4294967296 * -4294967296 + main__x) / 3) + (main__x / 4294967296 * -4294967296 + -3 * ((main__x / 4294967296 * -4294967296 + main__x) / 3) + main__x) / 4294967296 * 4294967296 - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 26]: Loop Invariant Derived loop invariant: 2863311531 * main__x <= 12297829383904690176 * ((main__x / 4294967296 * -4294967296 + -3 * ((main__x / 4294967296 * -4294967296 + main__x) / 3) + main__x) / 4294967296) + 1431655766 + 12297829383904690176 * (main__x / 4294967296) + 8589934592 * ((main__x / 4294967296 * -4294967296 + main__x) / 3) - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: main__x <= main__x / 4294967296 * 4294967296 + 3 * ((main__x / 4294967296 * -4294967296 + main__x) / 3) + (main__x / 4294967296 * -4294967296 + -3 * ((main__x / 4294967296 * -4294967296 + main__x) / 3) + main__x) / 4294967296 * 4294967296 - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: 1 - ProcedureContractResult [Line: 16]: Procedure Contract for main Derived contract for procedure main: 1 RESULT: Ultimate proved your program to be correct! [2022-03-20 13:18:27,399 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...