/usr/bin/java -ea -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationQvasr_64.epf -i ../../../trunk/examples/svcomp/loop-simple/nested_2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-34549b5 [2022-04-08 10:32:32,062 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-08 10:32:32,063 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-08 10:32:32,094 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-04-08 10:32:32,111 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-08 10:32:32,113 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-08 10:32:32,114 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-08 10:32:32,114 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-08 10:32:32,115 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-08 10:32:32,116 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-08 10:32:32,119 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-08 10:32:32,123 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-08 10:32:32,125 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-08 10:32:32,126 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-08 10:32:32,126 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-08 10:32:32,127 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-08 10:32:32,128 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-08 10:32:32,133 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-04-08 10:32:32,139 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-08 10:32:32,139 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-08 10:32:32,141 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-08 10:32:32,141 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationQvasr_64.epf [2022-04-08 10:32:32,151 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-08 10:32:32,151 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-08 10:32:32,152 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-08 10:32:32,152 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-08 10:32:32,152 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-08 10:32:32,152 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-08 10:32:32,152 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-08 10:32:32,152 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-08 10:32:32,153 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-08 10:32:32,153 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-08 10:32:32,153 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-08 10:32:32,154 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-08 10:32:32,154 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-08 10:32:32,154 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-04-08 10:32:32,154 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-08 10:32:32,154 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-08 10:32:32,154 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-08 10:32:32,154 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2022-04-08 10:32:32,154 INFO L138 SettingsManager]: * Trace refinement strategy=ACCELERATED_INTERPOLATION [2022-04-08 10:32:32,155 INFO L138 SettingsManager]: * Trace refinement strategy used in Accelerated Interpolation=CAMEL [2022-04-08 10:32:32,155 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-08 10:32:32,155 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=QVASR [2022-04-08 10:32:32,155 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-04-08 10:32:32,306 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-08 10:32:32,322 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-08 10:32:32,323 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-08 10:32:32,324 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-08 10:32:32,325 INFO L275 PluginConnector]: CDTParser initialized [2022-04-08 10:32:32,325 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-simple/nested_2.c [2022-04-08 10:32:32,357 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d8924b918/3c97ff69ba0048ce8d575b9f9f370302/FLAGc5c33f25d [2022-04-08 10:32:32,676 INFO L306 CDTParser]: Found 1 translation units. [2022-04-08 10:32:32,676 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-simple/nested_2.c [2022-04-08 10:32:32,680 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d8924b918/3c97ff69ba0048ce8d575b9f9f370302/FLAGc5c33f25d [2022-04-08 10:32:32,689 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d8924b918/3c97ff69ba0048ce8d575b9f9f370302 [2022-04-08 10:32:32,690 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-08 10:32:32,691 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-04-08 10:32:32,703 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-08 10:32:32,703 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-08 10:32:32,705 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-08 10:32:32,706 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.04 10:32:32" (1/1) ... [2022-04-08 10:32:32,707 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ba09cf0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 10:32:32, skipping insertion in model container [2022-04-08 10:32:32,707 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.04 10:32:32" (1/1) ... [2022-04-08 10:32:32,711 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-08 10:32:32,717 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-08 10:32:32,837 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-simple/nested_2.c[730,743] [2022-04-08 10:32:32,839 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-08 10:32:32,845 INFO L203 MainTranslator]: Completed pre-run [2022-04-08 10:32:32,853 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-simple/nested_2.c[730,743] [2022-04-08 10:32:32,854 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-08 10:32:32,862 INFO L208 MainTranslator]: Completed translation [2022-04-08 10:32:32,862 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 10:32:32 WrapperNode [2022-04-08 10:32:32,862 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-08 10:32:32,863 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-08 10:32:32,863 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-08 10:32:32,863 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-08 10:32:32,870 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 10:32:32" (1/1) ... [2022-04-08 10:32:32,870 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 10:32:32" (1/1) ... [2022-04-08 10:32:32,875 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 10:32:32" (1/1) ... [2022-04-08 10:32:32,875 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 10:32:32" (1/1) ... [2022-04-08 10:32:32,882 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 10:32:32" (1/1) ... [2022-04-08 10:32:32,885 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 10:32:32" (1/1) ... [2022-04-08 10:32:32,885 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 10:32:32" (1/1) ... [2022-04-08 10:32:32,886 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-08 10:32:32,887 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-08 10:32:32,887 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-08 10:32:32,887 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-08 10:32:32,887 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 10:32:32" (1/1) ... [2022-04-08 10:32:32,892 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-08 10:32:32,898 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-08 10:32:32,921 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-04-08 10:32:32,940 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-04-08 10:32:32,963 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-04-08 10:32:32,964 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-08 10:32:32,964 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-04-08 10:32:32,964 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-04-08 10:32:32,964 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-04-08 10:32:32,965 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-04-08 10:32:32,965 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-08 10:32:32,965 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-04-08 10:32:32,965 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-04-08 10:32:32,966 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-08 10:32:32,966 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-08 10:32:32,966 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-08 10:32:32,966 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-08 10:32:32,967 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-08 10:32:33,006 INFO L234 CfgBuilder]: Building ICFG [2022-04-08 10:32:33,007 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-08 10:32:33,086 INFO L275 CfgBuilder]: Performing block encoding [2022-04-08 10:32:33,093 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-08 10:32:33,093 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-04-08 10:32:33,094 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.04 10:32:33 BoogieIcfgContainer [2022-04-08 10:32:33,094 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-08 10:32:33,095 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-08 10:32:33,095 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-08 10:32:33,098 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-08 10:32:33,098 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.04 10:32:32" (1/3) ... [2022-04-08 10:32:33,098 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c52eba3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.04 10:32:33, skipping insertion in model container [2022-04-08 10:32:33,098 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 10:32:32" (2/3) ... [2022-04-08 10:32:33,099 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c52eba3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.04 10:32:33, skipping insertion in model container [2022-04-08 10:32:33,099 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.04 10:32:33" (3/3) ... [2022-04-08 10:32:33,102 INFO L111 eAbstractionObserver]: Analyzing ICFG nested_2.c [2022-04-08 10:32:33,105 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-04-08 10:32:33,105 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-04-08 10:32:33,134 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-08 10:32:33,149 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 [2022-04-08 10:32:33,149 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-04-08 10:32:33,163 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 12 states have (on average 1.5) internal successors, (18), 13 states have internal predecessors, (18), 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) [2022-04-08 10:32:33,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-04-08 10:32:33,182 INFO L491 BasicCegarLoop]: Found error trace [2022-04-08 10:32:33,182 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-08 10:32:33,183 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-08 10:32:33,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-08 10:32:33,187 INFO L85 PathProgramCache]: Analyzing trace with hash -1747983725, now seen corresponding path program 1 times [2022-04-08 10:32:33,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-08 10:32:33,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1853416317] [2022-04-08 10:32:33,200 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-08 10:32:33,200 INFO L85 PathProgramCache]: Analyzing trace with hash -1747983725, now seen corresponding path program 2 times [2022-04-08 10:32:33,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-08 10:32:33,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574108386] [2022-04-08 10:32:33,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-08 10:32:33,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-08 10:32:33,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 10:32:33,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-08 10:32:33,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 10:32:33,396 INFO L290 TraceCheckUtils]: 0: Hoare triple {27#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(11, 2);call #Ultimate.allocInit(12, 3); {21#true} is VALID [2022-04-08 10:32:33,397 INFO L290 TraceCheckUtils]: 1: Hoare triple {21#true} assume true; {21#true} is VALID [2022-04-08 10:32:33,397 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {21#true} {21#true} #44#return; {21#true} is VALID [2022-04-08 10:32:33,404 INFO L272 TraceCheckUtils]: 0: Hoare triple {21#true} call ULTIMATE.init(); {27#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-08 10:32:33,404 INFO L290 TraceCheckUtils]: 1: Hoare triple {27#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(11, 2);call #Ultimate.allocInit(12, 3); {21#true} is VALID [2022-04-08 10:32:33,404 INFO L290 TraceCheckUtils]: 2: Hoare triple {21#true} assume true; {21#true} is VALID [2022-04-08 10:32:33,404 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {21#true} {21#true} #44#return; {21#true} is VALID [2022-04-08 10:32:33,404 INFO L272 TraceCheckUtils]: 4: Hoare triple {21#true} call #t~ret6 := main(); {21#true} is VALID [2022-04-08 10:32:33,405 INFO L290 TraceCheckUtils]: 5: Hoare triple {21#true} ~a~0 := 6;~b~0 := 6;~a~0 := 0; {26#(= main_~a~0 0)} is VALID [2022-04-08 10:32:33,406 INFO L290 TraceCheckUtils]: 6: Hoare triple {26#(= main_~a~0 0)} assume !(~a~0 < 6); {22#false} is VALID [2022-04-08 10:32:33,406 INFO L290 TraceCheckUtils]: 7: Hoare triple {22#false} assume !(6 == ~a~0 && 6 == ~b~0); {22#false} is VALID [2022-04-08 10:32:33,406 INFO L290 TraceCheckUtils]: 8: Hoare triple {22#false} assume !false; {22#false} is VALID [2022-04-08 10:32:33,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-08 10:32:33,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-08 10:32:33,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574108386] [2022-04-08 10:32:33,408 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574108386] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-08 10:32:33,408 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-08 10:32:33,408 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-08 10:32:33,411 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-08 10:32:33,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1853416317] [2022-04-08 10:32:33,412 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1853416317] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-08 10:32:33,412 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-08 10:32:33,412 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-08 10:32:33,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999173976] [2022-04-08 10:32:33,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-08 10:32:33,416 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 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 9 [2022-04-08 10:32:33,417 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-08 10:32:33,419 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 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) [2022-04-08 10:32:33,440 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 9 edges. 9 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 10:32:33,441 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-04-08 10:32:33,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-08 10:32:33,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-04-08 10:32:33,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-08 10:32:33,463 INFO L87 Difference]: Start difference. First operand has 18 states, 12 states have (on average 1.5) internal successors, (18), 13 states have internal predecessors, (18), 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 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 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) [2022-04-08 10:32:33,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 10:32:33,551 INFO L93 Difference]: Finished difference Result 34 states and 46 transitions. [2022-04-08 10:32:33,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-08 10:32:33,551 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 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 9 [2022-04-08 10:32:33,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-08 10:32:33,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 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) [2022-04-08 10:32:33,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 46 transitions. [2022-04-08 10:32:33,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 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) [2022-04-08 10:32:33,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 46 transitions. [2022-04-08 10:32:33,560 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 4 states and 46 transitions. [2022-04-08 10:32:33,599 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 46 edges. 46 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 10:32:33,605 INFO L225 Difference]: With dead ends: 34 [2022-04-08 10:32:33,605 INFO L226 Difference]: Without dead ends: 17 [2022-04-08 10:32:33,607 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-04-08 10:32:33,609 INFO L913 BasicCegarLoop]: 17 mSDtfsCounter, 20 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-08 10:32:33,610 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 26 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-08 10:32:33,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-04-08 10:32:33,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 14. [2022-04-08 10:32:33,630 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-08 10:32:33,630 INFO L82 GeneralOperation]: Start isEquivalent. First operand 17 states. Second operand has 14 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 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) [2022-04-08 10:32:33,631 INFO L74 IsIncluded]: Start isIncluded. First operand 17 states. Second operand has 14 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 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) [2022-04-08 10:32:33,631 INFO L87 Difference]: Start difference. First operand 17 states. Second operand has 14 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 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) [2022-04-08 10:32:33,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 10:32:33,633 INFO L93 Difference]: Finished difference Result 17 states and 19 transitions. [2022-04-08 10:32:33,633 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2022-04-08 10:32:33,633 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 10:32:33,633 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 10:32:33,634 INFO L74 IsIncluded]: Start isIncluded. First operand has 14 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 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) Second operand 17 states. [2022-04-08 10:32:33,634 INFO L87 Difference]: Start difference. First operand has 14 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 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) Second operand 17 states. [2022-04-08 10:32:33,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 10:32:33,635 INFO L93 Difference]: Finished difference Result 17 states and 19 transitions. [2022-04-08 10:32:33,635 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2022-04-08 10:32:33,636 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 10:32:33,636 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 10:32:33,636 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-08 10:32:33,636 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-08 10:32:33,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 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) [2022-04-08 10:32:33,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2022-04-08 10:32:33,638 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 9 [2022-04-08 10:32:33,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-08 10:32:33,638 INFO L478 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2022-04-08 10:32:33,638 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 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) [2022-04-08 10:32:33,638 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 14 states and 15 transitions. [2022-04-08 10:32:33,661 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 15 edges. 15 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 10:32:33,661 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2022-04-08 10:32:33,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-04-08 10:32:33,662 INFO L491 BasicCegarLoop]: Found error trace [2022-04-08 10:32:33,662 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-08 10:32:33,662 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-08 10:32:33,662 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-08 10:32:33,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-08 10:32:33,663 INFO L85 PathProgramCache]: Analyzing trace with hash -1955520686, now seen corresponding path program 1 times [2022-04-08 10:32:33,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-08 10:32:33,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1135869933] [2022-04-08 10:32:33,677 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Cannot deal with arrays. [2022-04-08 10:32:33,677 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-08 10:32:33,677 INFO L85 PathProgramCache]: Analyzing trace with hash -1955520686, now seen corresponding path program 2 times [2022-04-08 10:32:33,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-08 10:32:33,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520854100] [2022-04-08 10:32:33,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-08 10:32:33,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-08 10:32:33,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 10:32:33,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-08 10:32:33,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 10:32:33,716 INFO L290 TraceCheckUtils]: 0: Hoare triple {168#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(11, 2);call #Ultimate.allocInit(12, 3); {162#true} is VALID [2022-04-08 10:32:33,716 INFO L290 TraceCheckUtils]: 1: Hoare triple {162#true} assume true; {162#true} is VALID [2022-04-08 10:32:33,716 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {162#true} {162#true} #44#return; {162#true} is VALID [2022-04-08 10:32:33,717 INFO L272 TraceCheckUtils]: 0: Hoare triple {162#true} call ULTIMATE.init(); {168#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-08 10:32:33,717 INFO L290 TraceCheckUtils]: 1: Hoare triple {168#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(11, 2);call #Ultimate.allocInit(12, 3); {162#true} is VALID [2022-04-08 10:32:33,717 INFO L290 TraceCheckUtils]: 2: Hoare triple {162#true} assume true; {162#true} is VALID [2022-04-08 10:32:33,717 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {162#true} {162#true} #44#return; {162#true} is VALID [2022-04-08 10:32:33,717 INFO L272 TraceCheckUtils]: 4: Hoare triple {162#true} call #t~ret6 := main(); {162#true} is VALID [2022-04-08 10:32:33,717 INFO L290 TraceCheckUtils]: 5: Hoare triple {162#true} ~a~0 := 6;~b~0 := 6;~a~0 := 0; {162#true} is VALID [2022-04-08 10:32:33,718 INFO L290 TraceCheckUtils]: 6: Hoare triple {162#true} assume !!(~a~0 < 6);~b~0 := 0; {167#(= main_~b~0 0)} is VALID [2022-04-08 10:32:33,718 INFO L290 TraceCheckUtils]: 7: Hoare triple {167#(= main_~b~0 0)} assume !(~b~0 < 6); {163#false} is VALID [2022-04-08 10:32:33,719 INFO L290 TraceCheckUtils]: 8: Hoare triple {163#false} #t~pre4 := 1 + ~a~0;~a~0 := 1 + ~a~0;havoc #t~pre4; {163#false} is VALID [2022-04-08 10:32:33,719 INFO L290 TraceCheckUtils]: 9: Hoare triple {163#false} assume !(~a~0 < 6); {163#false} is VALID [2022-04-08 10:32:33,719 INFO L290 TraceCheckUtils]: 10: Hoare triple {163#false} assume !(6 == ~a~0 && 6 == ~b~0); {163#false} is VALID [2022-04-08 10:32:33,719 INFO L290 TraceCheckUtils]: 11: Hoare triple {163#false} assume !false; {163#false} is VALID [2022-04-08 10:32:33,719 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-08 10:32:33,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-08 10:32:33,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520854100] [2022-04-08 10:32:33,720 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520854100] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-08 10:32:33,720 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-08 10:32:33,720 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-08 10:32:33,720 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-08 10:32:33,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1135869933] [2022-04-08 10:32:33,720 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1135869933] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-08 10:32:33,720 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-08 10:32:33,720 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-08 10:32:33,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619437450] [2022-04-08 10:32:33,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-08 10:32:33,721 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 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 12 [2022-04-08 10:32:33,721 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-08 10:32:33,722 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 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) [2022-04-08 10:32:33,751 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 12 edges. 12 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 10:32:33,752 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-04-08 10:32:33,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-08 10:32:33,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-04-08 10:32:33,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-08 10:32:33,753 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 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) [2022-04-08 10:32:33,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 10:32:33,803 INFO L93 Difference]: Finished difference Result 23 states and 26 transitions. [2022-04-08 10:32:33,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-08 10:32:33,804 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 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 12 [2022-04-08 10:32:33,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-08 10:32:33,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 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) [2022-04-08 10:32:33,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 25 transitions. [2022-04-08 10:32:33,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 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) [2022-04-08 10:32:33,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 25 transitions. [2022-04-08 10:32:33,810 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 4 states and 25 transitions. [2022-04-08 10:32:33,830 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 25 edges. 25 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 10:32:33,831 INFO L225 Difference]: With dead ends: 23 [2022-04-08 10:32:33,831 INFO L226 Difference]: Without dead ends: 16 [2022-04-08 10:32:33,832 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-04-08 10:32:33,834 INFO L913 BasicCegarLoop]: 12 mSDtfsCounter, 11 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-08 10:32:33,835 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 19 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-08 10:32:33,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2022-04-08 10:32:33,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 15. [2022-04-08 10:32:33,841 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-08 10:32:33,841 INFO L82 GeneralOperation]: Start isEquivalent. First operand 16 states. Second operand has 15 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 11 states have internal predecessors, (13), 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) [2022-04-08 10:32:33,842 INFO L74 IsIncluded]: Start isIncluded. First operand 16 states. Second operand has 15 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 11 states have internal predecessors, (13), 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) [2022-04-08 10:32:33,842 INFO L87 Difference]: Start difference. First operand 16 states. Second operand has 15 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 11 states have internal predecessors, (13), 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) [2022-04-08 10:32:33,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 10:32:33,843 INFO L93 Difference]: Finished difference Result 16 states and 17 transitions. [2022-04-08 10:32:33,843 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2022-04-08 10:32:33,843 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 10:32:33,843 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 10:32:33,843 INFO L74 IsIncluded]: Start isIncluded. First operand has 15 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 11 states have internal predecessors, (13), 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) Second operand 16 states. [2022-04-08 10:32:33,859 INFO L87 Difference]: Start difference. First operand has 15 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 11 states have internal predecessors, (13), 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) Second operand 16 states. [2022-04-08 10:32:33,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 10:32:33,860 INFO L93 Difference]: Finished difference Result 16 states and 17 transitions. [2022-04-08 10:32:33,860 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2022-04-08 10:32:33,861 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 10:32:33,861 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 10:32:33,861 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-08 10:32:33,861 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-08 10:32:33,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 11 states have internal predecessors, (13), 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) [2022-04-08 10:32:33,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2022-04-08 10:32:33,862 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 12 [2022-04-08 10:32:33,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-08 10:32:33,862 INFO L478 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2022-04-08 10:32:33,862 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 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) [2022-04-08 10:32:33,863 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 15 states and 16 transitions. [2022-04-08 10:32:33,880 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 16 edges. 16 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 10:32:33,880 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2022-04-08 10:32:33,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-04-08 10:32:33,881 INFO L491 BasicCegarLoop]: Found error trace [2022-04-08 10:32:33,881 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-08 10:32:33,881 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-04-08 10:32:33,881 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-08 10:32:33,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-08 10:32:33,882 INFO L85 PathProgramCache]: Analyzing trace with hash -686991696, now seen corresponding path program 1 times [2022-04-08 10:32:33,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-08 10:32:33,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [902306351] [2022-04-08 10:32:33,898 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Cannot deal with arrays. [2022-04-08 10:32:33,910 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Cannot deal with arrays. [2022-04-08 10:32:33,910 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-08 10:32:33,910 INFO L85 PathProgramCache]: Analyzing trace with hash -686991696, now seen corresponding path program 2 times [2022-04-08 10:32:33,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-08 10:32:33,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712614636] [2022-04-08 10:32:33,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-08 10:32:33,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-08 10:32:33,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 10:32:33,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-08 10:32:33,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 10:32:33,962 INFO L290 TraceCheckUtils]: 0: Hoare triple {288#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(11, 2);call #Ultimate.allocInit(12, 3); {281#true} is VALID [2022-04-08 10:32:33,963 INFO L290 TraceCheckUtils]: 1: Hoare triple {281#true} assume true; {281#true} is VALID [2022-04-08 10:32:33,963 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {281#true} {281#true} #44#return; {281#true} is VALID [2022-04-08 10:32:33,964 INFO L272 TraceCheckUtils]: 0: Hoare triple {281#true} call ULTIMATE.init(); {288#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-08 10:32:33,964 INFO L290 TraceCheckUtils]: 1: Hoare triple {288#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(11, 2);call #Ultimate.allocInit(12, 3); {281#true} is VALID [2022-04-08 10:32:33,964 INFO L290 TraceCheckUtils]: 2: Hoare triple {281#true} assume true; {281#true} is VALID [2022-04-08 10:32:33,964 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {281#true} {281#true} #44#return; {281#true} is VALID [2022-04-08 10:32:33,964 INFO L272 TraceCheckUtils]: 4: Hoare triple {281#true} call #t~ret6 := main(); {281#true} is VALID [2022-04-08 10:32:33,964 INFO L290 TraceCheckUtils]: 5: Hoare triple {281#true} ~a~0 := 6;~b~0 := 6;~a~0 := 0; {281#true} is VALID [2022-04-08 10:32:33,965 INFO L290 TraceCheckUtils]: 6: Hoare triple {281#true} assume !!(~a~0 < 6);~b~0 := 0; {286#(= main_~b~0 0)} is VALID [2022-04-08 10:32:33,965 INFO L290 TraceCheckUtils]: 7: Hoare triple {286#(= main_~b~0 0)} assume !!(~b~0 < 6); {286#(= main_~b~0 0)} is VALID [2022-04-08 10:32:33,966 INFO L290 TraceCheckUtils]: 8: Hoare triple {286#(= main_~b~0 0)} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {287#(<= main_~b~0 1)} is VALID [2022-04-08 10:32:33,966 INFO L290 TraceCheckUtils]: 9: Hoare triple {287#(<= main_~b~0 1)} assume !(~b~0 < 6); {282#false} is VALID [2022-04-08 10:32:33,967 INFO L290 TraceCheckUtils]: 10: Hoare triple {282#false} #t~pre4 := 1 + ~a~0;~a~0 := 1 + ~a~0;havoc #t~pre4; {282#false} is VALID [2022-04-08 10:32:33,967 INFO L290 TraceCheckUtils]: 11: Hoare triple {282#false} assume !(~a~0 < 6); {282#false} is VALID [2022-04-08 10:32:33,968 INFO L290 TraceCheckUtils]: 12: Hoare triple {282#false} assume !(6 == ~a~0 && 6 == ~b~0); {282#false} is VALID [2022-04-08 10:32:33,970 INFO L290 TraceCheckUtils]: 13: Hoare triple {282#false} assume !false; {282#false} is VALID [2022-04-08 10:32:33,971 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-08 10:32:33,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-08 10:32:33,974 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712614636] [2022-04-08 10:32:33,974 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712614636] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-08 10:32:33,974 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [893022366] [2022-04-08 10:32:33,974 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-08 10:32:33,974 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-08 10:32:33,974 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-08 10:32:34,011 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-08 10:32:34,035 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-04-08 10:32:34,093 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-08 10:32:34,093 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-08 10:32:34,095 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 3 conjunts are in the unsatisfiable core [2022-04-08 10:32:34,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 10:32:34,102 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-08 10:32:34,191 INFO L272 TraceCheckUtils]: 0: Hoare triple {281#true} call ULTIMATE.init(); {281#true} is VALID [2022-04-08 10:32:34,192 INFO L290 TraceCheckUtils]: 1: Hoare triple {281#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(11, 2);call #Ultimate.allocInit(12, 3); {281#true} is VALID [2022-04-08 10:32:34,192 INFO L290 TraceCheckUtils]: 2: Hoare triple {281#true} assume true; {281#true} is VALID [2022-04-08 10:32:34,192 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {281#true} {281#true} #44#return; {281#true} is VALID [2022-04-08 10:32:34,192 INFO L272 TraceCheckUtils]: 4: Hoare triple {281#true} call #t~ret6 := main(); {281#true} is VALID [2022-04-08 10:32:34,192 INFO L290 TraceCheckUtils]: 5: Hoare triple {281#true} ~a~0 := 6;~b~0 := 6;~a~0 := 0; {281#true} is VALID [2022-04-08 10:32:34,196 INFO L290 TraceCheckUtils]: 6: Hoare triple {281#true} assume !!(~a~0 < 6);~b~0 := 0; {310#(<= main_~b~0 0)} is VALID [2022-04-08 10:32:34,198 INFO L290 TraceCheckUtils]: 7: Hoare triple {310#(<= main_~b~0 0)} assume !!(~b~0 < 6); {310#(<= main_~b~0 0)} is VALID [2022-04-08 10:32:34,198 INFO L290 TraceCheckUtils]: 8: Hoare triple {310#(<= main_~b~0 0)} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {287#(<= main_~b~0 1)} is VALID [2022-04-08 10:32:34,199 INFO L290 TraceCheckUtils]: 9: Hoare triple {287#(<= main_~b~0 1)} assume !(~b~0 < 6); {282#false} is VALID [2022-04-08 10:32:34,199 INFO L290 TraceCheckUtils]: 10: Hoare triple {282#false} #t~pre4 := 1 + ~a~0;~a~0 := 1 + ~a~0;havoc #t~pre4; {282#false} is VALID [2022-04-08 10:32:34,199 INFO L290 TraceCheckUtils]: 11: Hoare triple {282#false} assume !(~a~0 < 6); {282#false} is VALID [2022-04-08 10:32:34,199 INFO L290 TraceCheckUtils]: 12: Hoare triple {282#false} assume !(6 == ~a~0 && 6 == ~b~0); {282#false} is VALID [2022-04-08 10:32:34,199 INFO L290 TraceCheckUtils]: 13: Hoare triple {282#false} assume !false; {282#false} is VALID [2022-04-08 10:32:34,199 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-08 10:32:34,199 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-08 10:32:34,286 INFO L290 TraceCheckUtils]: 13: Hoare triple {282#false} assume !false; {282#false} is VALID [2022-04-08 10:32:34,286 INFO L290 TraceCheckUtils]: 12: Hoare triple {282#false} assume !(6 == ~a~0 && 6 == ~b~0); {282#false} is VALID [2022-04-08 10:32:34,286 INFO L290 TraceCheckUtils]: 11: Hoare triple {282#false} assume !(~a~0 < 6); {282#false} is VALID [2022-04-08 10:32:34,286 INFO L290 TraceCheckUtils]: 10: Hoare triple {282#false} #t~pre4 := 1 + ~a~0;~a~0 := 1 + ~a~0;havoc #t~pre4; {282#false} is VALID [2022-04-08 10:32:34,287 INFO L290 TraceCheckUtils]: 9: Hoare triple {344#(< main_~b~0 6)} assume !(~b~0 < 6); {282#false} is VALID [2022-04-08 10:32:34,287 INFO L290 TraceCheckUtils]: 8: Hoare triple {348#(< main_~b~0 5)} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {344#(< main_~b~0 6)} is VALID [2022-04-08 10:32:34,288 INFO L290 TraceCheckUtils]: 7: Hoare triple {348#(< main_~b~0 5)} assume !!(~b~0 < 6); {348#(< main_~b~0 5)} is VALID [2022-04-08 10:32:34,288 INFO L290 TraceCheckUtils]: 6: Hoare triple {281#true} assume !!(~a~0 < 6);~b~0 := 0; {348#(< main_~b~0 5)} is VALID [2022-04-08 10:32:34,288 INFO L290 TraceCheckUtils]: 5: Hoare triple {281#true} ~a~0 := 6;~b~0 := 6;~a~0 := 0; {281#true} is VALID [2022-04-08 10:32:34,288 INFO L272 TraceCheckUtils]: 4: Hoare triple {281#true} call #t~ret6 := main(); {281#true} is VALID [2022-04-08 10:32:34,288 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {281#true} {281#true} #44#return; {281#true} is VALID [2022-04-08 10:32:34,289 INFO L290 TraceCheckUtils]: 2: Hoare triple {281#true} assume true; {281#true} is VALID [2022-04-08 10:32:34,289 INFO L290 TraceCheckUtils]: 1: Hoare triple {281#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(11, 2);call #Ultimate.allocInit(12, 3); {281#true} is VALID [2022-04-08 10:32:34,289 INFO L272 TraceCheckUtils]: 0: Hoare triple {281#true} call ULTIMATE.init(); {281#true} is VALID [2022-04-08 10:32:34,289 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-08 10:32:34,289 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [893022366] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-08 10:32:34,289 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-08 10:32:34,289 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 8 [2022-04-08 10:32:34,290 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-08 10:32:34,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [902306351] [2022-04-08 10:32:34,290 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [902306351] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-08 10:32:34,290 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-08 10:32:34,290 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-08 10:32:34,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097200270] [2022-04-08 10:32:34,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-08 10:32:34,291 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 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 14 [2022-04-08 10:32:34,291 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-08 10:32:34,291 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 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) [2022-04-08 10:32:34,302 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 14 edges. 14 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 10:32:34,302 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-08 10:32:34,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-08 10:32:34,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-08 10:32:34,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-04-08 10:32:34,303 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 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) [2022-04-08 10:32:34,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 10:32:34,383 INFO L93 Difference]: Finished difference Result 26 states and 29 transitions. [2022-04-08 10:32:34,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-04-08 10:32:34,383 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 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 14 [2022-04-08 10:32:34,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-08 10:32:34,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 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) [2022-04-08 10:32:34,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 27 transitions. [2022-04-08 10:32:34,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 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) [2022-04-08 10:32:34,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 27 transitions. [2022-04-08 10:32:34,385 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 5 states and 27 transitions. [2022-04-08 10:32:34,407 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 27 edges. 27 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 10:32:34,408 INFO L225 Difference]: With dead ends: 26 [2022-04-08 10:32:34,408 INFO L226 Difference]: Without dead ends: 18 [2022-04-08 10:32:34,408 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2022-04-08 10:32:34,409 INFO L913 BasicCegarLoop]: 12 mSDtfsCounter, 13 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-08 10:32:34,409 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 24 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-08 10:32:34,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2022-04-08 10:32:34,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2022-04-08 10:32:34,414 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-08 10:32:34,414 INFO L82 GeneralOperation]: Start isEquivalent. First operand 18 states. Second operand has 17 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 13 states have internal predecessors, (15), 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) [2022-04-08 10:32:34,414 INFO L74 IsIncluded]: Start isIncluded. First operand 18 states. Second operand has 17 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 13 states have internal predecessors, (15), 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) [2022-04-08 10:32:34,415 INFO L87 Difference]: Start difference. First operand 18 states. Second operand has 17 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 13 states have internal predecessors, (15), 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) [2022-04-08 10:32:34,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 10:32:34,415 INFO L93 Difference]: Finished difference Result 18 states and 19 transitions. [2022-04-08 10:32:34,415 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2022-04-08 10:32:34,416 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 10:32:34,416 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 10:32:34,416 INFO L74 IsIncluded]: Start isIncluded. First operand has 17 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 13 states have internal predecessors, (15), 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) Second operand 18 states. [2022-04-08 10:32:34,416 INFO L87 Difference]: Start difference. First operand has 17 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 13 states have internal predecessors, (15), 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) Second operand 18 states. [2022-04-08 10:32:34,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 10:32:34,417 INFO L93 Difference]: Finished difference Result 18 states and 19 transitions. [2022-04-08 10:32:34,417 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2022-04-08 10:32:34,417 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 10:32:34,417 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 10:32:34,417 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-08 10:32:34,417 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-08 10:32:34,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 13 states have internal predecessors, (15), 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) [2022-04-08 10:32:34,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2022-04-08 10:32:34,418 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 14 [2022-04-08 10:32:34,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-08 10:32:34,418 INFO L478 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2022-04-08 10:32:34,419 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 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) [2022-04-08 10:32:34,419 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 17 states and 18 transitions. [2022-04-08 10:32:34,437 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 18 edges. 18 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 10:32:34,437 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2022-04-08 10:32:34,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-04-08 10:32:34,437 INFO L491 BasicCegarLoop]: Found error trace [2022-04-08 10:32:34,438 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-08 10:32:34,456 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-04-08 10:32:34,653 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-08 10:32:34,654 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-08 10:32:34,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-08 10:32:34,654 INFO L85 PathProgramCache]: Analyzing trace with hash -1401344370, now seen corresponding path program 3 times [2022-04-08 10:32:34,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-08 10:32:34,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1260339609] [2022-04-08 10:32:34,686 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Cannot deal with arrays. [2022-04-08 10:32:34,704 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Cannot deal with arrays. [2022-04-08 10:32:34,704 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-08 10:32:34,704 INFO L85 PathProgramCache]: Analyzing trace with hash -1401344370, now seen corresponding path program 4 times [2022-04-08 10:32:34,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-08 10:32:34,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372068652] [2022-04-08 10:32:34,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-08 10:32:34,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-08 10:32:34,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 10:32:34,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-08 10:32:34,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 10:32:34,769 INFO L290 TraceCheckUtils]: 0: Hoare triple {508#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(11, 2);call #Ultimate.allocInit(12, 3); {501#true} is VALID [2022-04-08 10:32:34,769 INFO L290 TraceCheckUtils]: 1: Hoare triple {501#true} assume true; {501#true} is VALID [2022-04-08 10:32:34,770 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {501#true} {501#true} #44#return; {501#true} is VALID [2022-04-08 10:32:34,770 INFO L272 TraceCheckUtils]: 0: Hoare triple {501#true} call ULTIMATE.init(); {508#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-08 10:32:34,770 INFO L290 TraceCheckUtils]: 1: Hoare triple {508#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(11, 2);call #Ultimate.allocInit(12, 3); {501#true} is VALID [2022-04-08 10:32:34,770 INFO L290 TraceCheckUtils]: 2: Hoare triple {501#true} assume true; {501#true} is VALID [2022-04-08 10:32:34,770 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {501#true} {501#true} #44#return; {501#true} is VALID [2022-04-08 10:32:34,771 INFO L272 TraceCheckUtils]: 4: Hoare triple {501#true} call #t~ret6 := main(); {501#true} is VALID [2022-04-08 10:32:34,771 INFO L290 TraceCheckUtils]: 5: Hoare triple {501#true} ~a~0 := 6;~b~0 := 6;~a~0 := 0; {506#(= main_~a~0 0)} is VALID [2022-04-08 10:32:34,771 INFO L290 TraceCheckUtils]: 6: Hoare triple {506#(= main_~a~0 0)} assume !!(~a~0 < 6);~b~0 := 0; {506#(= main_~a~0 0)} is VALID [2022-04-08 10:32:34,772 INFO L290 TraceCheckUtils]: 7: Hoare triple {506#(= main_~a~0 0)} assume !!(~b~0 < 6); {506#(= main_~a~0 0)} is VALID [2022-04-08 10:32:34,772 INFO L290 TraceCheckUtils]: 8: Hoare triple {506#(= main_~a~0 0)} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {506#(= main_~a~0 0)} is VALID [2022-04-08 10:32:34,772 INFO L290 TraceCheckUtils]: 9: Hoare triple {506#(= main_~a~0 0)} assume !!(~b~0 < 6); {506#(= main_~a~0 0)} is VALID [2022-04-08 10:32:34,772 INFO L290 TraceCheckUtils]: 10: Hoare triple {506#(= main_~a~0 0)} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {506#(= main_~a~0 0)} is VALID [2022-04-08 10:32:34,773 INFO L290 TraceCheckUtils]: 11: Hoare triple {506#(= main_~a~0 0)} assume !(~b~0 < 6); {506#(= main_~a~0 0)} is VALID [2022-04-08 10:32:34,773 INFO L290 TraceCheckUtils]: 12: Hoare triple {506#(= main_~a~0 0)} #t~pre4 := 1 + ~a~0;~a~0 := 1 + ~a~0;havoc #t~pre4; {507#(<= main_~a~0 1)} is VALID [2022-04-08 10:32:34,774 INFO L290 TraceCheckUtils]: 13: Hoare triple {507#(<= main_~a~0 1)} assume !(~a~0 < 6); {502#false} is VALID [2022-04-08 10:32:34,774 INFO L290 TraceCheckUtils]: 14: Hoare triple {502#false} assume !(6 == ~a~0 && 6 == ~b~0); {502#false} is VALID [2022-04-08 10:32:34,774 INFO L290 TraceCheckUtils]: 15: Hoare triple {502#false} assume !false; {502#false} is VALID [2022-04-08 10:32:34,774 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-04-08 10:32:34,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-08 10:32:34,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372068652] [2022-04-08 10:32:34,774 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372068652] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-08 10:32:34,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1093909395] [2022-04-08 10:32:34,774 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-04-08 10:32:34,775 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-08 10:32:34,775 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-08 10:32:34,792 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-08 10:32:34,815 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-04-08 10:32:34,835 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-04-08 10:32:34,836 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-08 10:32:34,836 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 4 conjunts are in the unsatisfiable core [2022-04-08 10:32:34,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 10:32:34,843 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-08 10:32:34,926 INFO L272 TraceCheckUtils]: 0: Hoare triple {501#true} call ULTIMATE.init(); {501#true} is VALID [2022-04-08 10:32:34,927 INFO L290 TraceCheckUtils]: 1: Hoare triple {501#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(11, 2);call #Ultimate.allocInit(12, 3); {501#true} is VALID [2022-04-08 10:32:34,927 INFO L290 TraceCheckUtils]: 2: Hoare triple {501#true} assume true; {501#true} is VALID [2022-04-08 10:32:34,927 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {501#true} {501#true} #44#return; {501#true} is VALID [2022-04-08 10:32:34,927 INFO L272 TraceCheckUtils]: 4: Hoare triple {501#true} call #t~ret6 := main(); {501#true} is VALID [2022-04-08 10:32:34,927 INFO L290 TraceCheckUtils]: 5: Hoare triple {501#true} ~a~0 := 6;~b~0 := 6;~a~0 := 0; {501#true} is VALID [2022-04-08 10:32:34,927 INFO L290 TraceCheckUtils]: 6: Hoare triple {501#true} assume !!(~a~0 < 6);~b~0 := 0; {530#(<= main_~b~0 0)} is VALID [2022-04-08 10:32:34,928 INFO L290 TraceCheckUtils]: 7: Hoare triple {530#(<= main_~b~0 0)} assume !!(~b~0 < 6); {530#(<= main_~b~0 0)} is VALID [2022-04-08 10:32:34,928 INFO L290 TraceCheckUtils]: 8: Hoare triple {530#(<= main_~b~0 0)} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {537#(<= main_~b~0 1)} is VALID [2022-04-08 10:32:34,928 INFO L290 TraceCheckUtils]: 9: Hoare triple {537#(<= main_~b~0 1)} assume !!(~b~0 < 6); {537#(<= main_~b~0 1)} is VALID [2022-04-08 10:32:34,929 INFO L290 TraceCheckUtils]: 10: Hoare triple {537#(<= main_~b~0 1)} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {544#(<= main_~b~0 2)} is VALID [2022-04-08 10:32:34,929 INFO L290 TraceCheckUtils]: 11: Hoare triple {544#(<= main_~b~0 2)} assume !(~b~0 < 6); {502#false} is VALID [2022-04-08 10:32:34,929 INFO L290 TraceCheckUtils]: 12: Hoare triple {502#false} #t~pre4 := 1 + ~a~0;~a~0 := 1 + ~a~0;havoc #t~pre4; {502#false} is VALID [2022-04-08 10:32:34,930 INFO L290 TraceCheckUtils]: 13: Hoare triple {502#false} assume !(~a~0 < 6); {502#false} is VALID [2022-04-08 10:32:34,930 INFO L290 TraceCheckUtils]: 14: Hoare triple {502#false} assume !(6 == ~a~0 && 6 == ~b~0); {502#false} is VALID [2022-04-08 10:32:34,930 INFO L290 TraceCheckUtils]: 15: Hoare triple {502#false} assume !false; {502#false} is VALID [2022-04-08 10:32:34,930 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-08 10:32:34,930 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-08 10:32:35,006 INFO L290 TraceCheckUtils]: 15: Hoare triple {502#false} assume !false; {502#false} is VALID [2022-04-08 10:32:35,006 INFO L290 TraceCheckUtils]: 14: Hoare triple {502#false} assume !(6 == ~a~0 && 6 == ~b~0); {502#false} is VALID [2022-04-08 10:32:35,006 INFO L290 TraceCheckUtils]: 13: Hoare triple {502#false} assume !(~a~0 < 6); {502#false} is VALID [2022-04-08 10:32:35,006 INFO L290 TraceCheckUtils]: 12: Hoare triple {502#false} #t~pre4 := 1 + ~a~0;~a~0 := 1 + ~a~0;havoc #t~pre4; {502#false} is VALID [2022-04-08 10:32:35,007 INFO L290 TraceCheckUtils]: 11: Hoare triple {572#(< main_~b~0 6)} assume !(~b~0 < 6); {502#false} is VALID [2022-04-08 10:32:35,007 INFO L290 TraceCheckUtils]: 10: Hoare triple {576#(< main_~b~0 5)} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {572#(< main_~b~0 6)} is VALID [2022-04-08 10:32:35,008 INFO L290 TraceCheckUtils]: 9: Hoare triple {576#(< main_~b~0 5)} assume !!(~b~0 < 6); {576#(< main_~b~0 5)} is VALID [2022-04-08 10:32:35,008 INFO L290 TraceCheckUtils]: 8: Hoare triple {583#(< main_~b~0 4)} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {576#(< main_~b~0 5)} is VALID [2022-04-08 10:32:35,009 INFO L290 TraceCheckUtils]: 7: Hoare triple {583#(< main_~b~0 4)} assume !!(~b~0 < 6); {583#(< main_~b~0 4)} is VALID [2022-04-08 10:32:35,010 INFO L290 TraceCheckUtils]: 6: Hoare triple {501#true} assume !!(~a~0 < 6);~b~0 := 0; {583#(< main_~b~0 4)} is VALID [2022-04-08 10:32:35,010 INFO L290 TraceCheckUtils]: 5: Hoare triple {501#true} ~a~0 := 6;~b~0 := 6;~a~0 := 0; {501#true} is VALID [2022-04-08 10:32:35,010 INFO L272 TraceCheckUtils]: 4: Hoare triple {501#true} call #t~ret6 := main(); {501#true} is VALID [2022-04-08 10:32:35,010 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {501#true} {501#true} #44#return; {501#true} is VALID [2022-04-08 10:32:35,010 INFO L290 TraceCheckUtils]: 2: Hoare triple {501#true} assume true; {501#true} is VALID [2022-04-08 10:32:35,010 INFO L290 TraceCheckUtils]: 1: Hoare triple {501#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(11, 2);call #Ultimate.allocInit(12, 3); {501#true} is VALID [2022-04-08 10:32:35,010 INFO L272 TraceCheckUtils]: 0: Hoare triple {501#true} call ULTIMATE.init(); {501#true} is VALID [2022-04-08 10:32:35,010 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-08 10:32:35,011 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1093909395] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-08 10:32:35,011 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-08 10:32:35,011 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-04-08 10:32:35,011 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-08 10:32:35,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1260339609] [2022-04-08 10:32:35,011 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1260339609] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-08 10:32:35,011 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-08 10:32:35,011 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-08 10:32:35,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664637693] [2022-04-08 10:32:35,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-08 10:32:35,012 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 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 [2022-04-08 10:32:35,012 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-08 10:32:35,012 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 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) [2022-04-08 10:32:35,025 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 14 edges. 14 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 10:32:35,025 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-08 10:32:35,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-08 10:32:35,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-08 10:32:35,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2022-04-08 10:32:35,026 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 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) [2022-04-08 10:32:35,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 10:32:35,101 INFO L93 Difference]: Finished difference Result 33 states and 36 transitions. [2022-04-08 10:32:35,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-04-08 10:32:35,101 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 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 [2022-04-08 10:32:35,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-08 10:32:35,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 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) [2022-04-08 10:32:35,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 27 transitions. [2022-04-08 10:32:35,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 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) [2022-04-08 10:32:35,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 27 transitions. [2022-04-08 10:32:35,103 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 5 states and 27 transitions. [2022-04-08 10:32:35,121 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 27 edges. 27 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 10:32:35,122 INFO L225 Difference]: With dead ends: 33 [2022-04-08 10:32:35,122 INFO L226 Difference]: Without dead ends: 30 [2022-04-08 10:32:35,122 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2022-04-08 10:32:35,123 INFO L913 BasicCegarLoop]: 12 mSDtfsCounter, 25 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-08 10:32:35,123 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 24 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-08 10:32:35,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-04-08 10:32:35,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 24. [2022-04-08 10:32:35,132 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-08 10:32:35,132 INFO L82 GeneralOperation]: Start isEquivalent. First operand 30 states. Second operand has 24 states, 20 states have (on average 1.15) internal successors, (23), 20 states have internal predecessors, (23), 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) [2022-04-08 10:32:35,133 INFO L74 IsIncluded]: Start isIncluded. First operand 30 states. Second operand has 24 states, 20 states have (on average 1.15) internal successors, (23), 20 states have internal predecessors, (23), 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) [2022-04-08 10:32:35,133 INFO L87 Difference]: Start difference. First operand 30 states. Second operand has 24 states, 20 states have (on average 1.15) internal successors, (23), 20 states have internal predecessors, (23), 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) [2022-04-08 10:32:35,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 10:32:35,134 INFO L93 Difference]: Finished difference Result 30 states and 33 transitions. [2022-04-08 10:32:35,134 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2022-04-08 10:32:35,134 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 10:32:35,134 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 10:32:35,134 INFO L74 IsIncluded]: Start isIncluded. First operand has 24 states, 20 states have (on average 1.15) internal successors, (23), 20 states have internal predecessors, (23), 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) Second operand 30 states. [2022-04-08 10:32:35,135 INFO L87 Difference]: Start difference. First operand has 24 states, 20 states have (on average 1.15) internal successors, (23), 20 states have internal predecessors, (23), 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) Second operand 30 states. [2022-04-08 10:32:35,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 10:32:35,136 INFO L93 Difference]: Finished difference Result 30 states and 33 transitions. [2022-04-08 10:32:35,136 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2022-04-08 10:32:35,136 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 10:32:35,136 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 10:32:35,136 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-08 10:32:35,136 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-08 10:32:35,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 20 states have (on average 1.15) internal successors, (23), 20 states have internal predecessors, (23), 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) [2022-04-08 10:32:35,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions. [2022-04-08 10:32:35,137 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 26 transitions. Word has length 16 [2022-04-08 10:32:35,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-08 10:32:35,137 INFO L478 AbstractCegarLoop]: Abstraction has 24 states and 26 transitions. [2022-04-08 10:32:35,137 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 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) [2022-04-08 10:32:35,137 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 24 states and 26 transitions. [2022-04-08 10:32:35,157 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 26 edges. 26 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 10:32:35,157 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2022-04-08 10:32:35,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-04-08 10:32:35,157 INFO L491 BasicCegarLoop]: Found error trace [2022-04-08 10:32:35,157 INFO L499 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-08 10:32:35,182 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-04-08 10:32:35,382 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-04-08 10:32:35,382 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-08 10:32:35,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-08 10:32:35,382 INFO L85 PathProgramCache]: Analyzing trace with hash -1986231757, now seen corresponding path program 5 times [2022-04-08 10:32:35,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-08 10:32:35,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [320940975] [2022-04-08 10:32:35,448 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Cannot deal with arrays. [2022-04-08 10:32:35,468 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Cannot deal with arrays. [2022-04-08 10:32:35,468 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-08 10:32:35,468 INFO L85 PathProgramCache]: Analyzing trace with hash -1986231757, now seen corresponding path program 6 times [2022-04-08 10:32:35,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-08 10:32:35,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541227382] [2022-04-08 10:32:35,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-08 10:32:35,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-08 10:32:35,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 10:32:35,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-08 10:32:35,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 10:32:35,550 INFO L290 TraceCheckUtils]: 0: Hoare triple {796#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(11, 2);call #Ultimate.allocInit(12, 3); {788#true} is VALID [2022-04-08 10:32:35,550 INFO L290 TraceCheckUtils]: 1: Hoare triple {788#true} assume true; {788#true} is VALID [2022-04-08 10:32:35,550 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {788#true} {788#true} #44#return; {788#true} is VALID [2022-04-08 10:32:35,551 INFO L272 TraceCheckUtils]: 0: Hoare triple {788#true} call ULTIMATE.init(); {796#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-08 10:32:35,551 INFO L290 TraceCheckUtils]: 1: Hoare triple {796#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(11, 2);call #Ultimate.allocInit(12, 3); {788#true} is VALID [2022-04-08 10:32:35,551 INFO L290 TraceCheckUtils]: 2: Hoare triple {788#true} assume true; {788#true} is VALID [2022-04-08 10:32:35,551 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {788#true} {788#true} #44#return; {788#true} is VALID [2022-04-08 10:32:35,551 INFO L272 TraceCheckUtils]: 4: Hoare triple {788#true} call #t~ret6 := main(); {788#true} is VALID [2022-04-08 10:32:35,551 INFO L290 TraceCheckUtils]: 5: Hoare triple {788#true} ~a~0 := 6;~b~0 := 6;~a~0 := 0; {788#true} is VALID [2022-04-08 10:32:35,551 INFO L290 TraceCheckUtils]: 6: Hoare triple {788#true} assume !!(~a~0 < 6);~b~0 := 0; {793#(= main_~b~0 0)} is VALID [2022-04-08 10:32:35,552 INFO L290 TraceCheckUtils]: 7: Hoare triple {793#(= main_~b~0 0)} assume !!(~b~0 < 6); {793#(= main_~b~0 0)} is VALID [2022-04-08 10:32:35,552 INFO L290 TraceCheckUtils]: 8: Hoare triple {793#(= main_~b~0 0)} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {794#(<= main_~b~0 1)} is VALID [2022-04-08 10:32:35,552 INFO L290 TraceCheckUtils]: 9: Hoare triple {794#(<= main_~b~0 1)} assume !!(~b~0 < 6); {794#(<= main_~b~0 1)} is VALID [2022-04-08 10:32:35,553 INFO L290 TraceCheckUtils]: 10: Hoare triple {794#(<= main_~b~0 1)} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {795#(<= main_~b~0 2)} is VALID [2022-04-08 10:32:35,553 INFO L290 TraceCheckUtils]: 11: Hoare triple {795#(<= main_~b~0 2)} assume !(~b~0 < 6); {789#false} is VALID [2022-04-08 10:32:35,553 INFO L290 TraceCheckUtils]: 12: Hoare triple {789#false} #t~pre4 := 1 + ~a~0;~a~0 := 1 + ~a~0;havoc #t~pre4; {789#false} is VALID [2022-04-08 10:32:35,554 INFO L290 TraceCheckUtils]: 13: Hoare triple {789#false} assume !!(~a~0 < 6);~b~0 := 0; {789#false} is VALID [2022-04-08 10:32:35,554 INFO L290 TraceCheckUtils]: 14: Hoare triple {789#false} assume !!(~b~0 < 6); {789#false} is VALID [2022-04-08 10:32:35,554 INFO L290 TraceCheckUtils]: 15: Hoare triple {789#false} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {789#false} is VALID [2022-04-08 10:32:35,554 INFO L290 TraceCheckUtils]: 16: Hoare triple {789#false} assume !!(~b~0 < 6); {789#false} is VALID [2022-04-08 10:32:35,554 INFO L290 TraceCheckUtils]: 17: Hoare triple {789#false} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {789#false} is VALID [2022-04-08 10:32:35,554 INFO L290 TraceCheckUtils]: 18: Hoare triple {789#false} assume !(~b~0 < 6); {789#false} is VALID [2022-04-08 10:32:35,554 INFO L290 TraceCheckUtils]: 19: Hoare triple {789#false} #t~pre4 := 1 + ~a~0;~a~0 := 1 + ~a~0;havoc #t~pre4; {789#false} is VALID [2022-04-08 10:32:35,554 INFO L290 TraceCheckUtils]: 20: Hoare triple {789#false} assume !(~a~0 < 6); {789#false} is VALID [2022-04-08 10:32:35,554 INFO L290 TraceCheckUtils]: 21: Hoare triple {789#false} assume !(6 == ~a~0 && 6 == ~b~0); {789#false} is VALID [2022-04-08 10:32:35,554 INFO L290 TraceCheckUtils]: 22: Hoare triple {789#false} assume !false; {789#false} is VALID [2022-04-08 10:32:35,555 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 15 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-04-08 10:32:35,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-08 10:32:35,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541227382] [2022-04-08 10:32:35,555 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541227382] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-08 10:32:35,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [605247600] [2022-04-08 10:32:35,555 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-04-08 10:32:35,555 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-08 10:32:35,555 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-08 10:32:35,572 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-08 10:32:35,573 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-04-08 10:32:35,597 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-04-08 10:32:35,598 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-08 10:32:35,598 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 4 conjunts are in the unsatisfiable core [2022-04-08 10:32:35,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 10:32:35,605 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-08 10:32:35,712 INFO L272 TraceCheckUtils]: 0: Hoare triple {788#true} call ULTIMATE.init(); {788#true} is VALID [2022-04-08 10:32:35,712 INFO L290 TraceCheckUtils]: 1: Hoare triple {788#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(11, 2);call #Ultimate.allocInit(12, 3); {788#true} is VALID [2022-04-08 10:32:35,712 INFO L290 TraceCheckUtils]: 2: Hoare triple {788#true} assume true; {788#true} is VALID [2022-04-08 10:32:35,712 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {788#true} {788#true} #44#return; {788#true} is VALID [2022-04-08 10:32:35,712 INFO L272 TraceCheckUtils]: 4: Hoare triple {788#true} call #t~ret6 := main(); {788#true} is VALID [2022-04-08 10:32:35,713 INFO L290 TraceCheckUtils]: 5: Hoare triple {788#true} ~a~0 := 6;~b~0 := 6;~a~0 := 0; {815#(<= main_~a~0 0)} is VALID [2022-04-08 10:32:35,713 INFO L290 TraceCheckUtils]: 6: Hoare triple {815#(<= main_~a~0 0)} assume !!(~a~0 < 6);~b~0 := 0; {815#(<= main_~a~0 0)} is VALID [2022-04-08 10:32:35,714 INFO L290 TraceCheckUtils]: 7: Hoare triple {815#(<= main_~a~0 0)} assume !!(~b~0 < 6); {815#(<= main_~a~0 0)} is VALID [2022-04-08 10:32:35,714 INFO L290 TraceCheckUtils]: 8: Hoare triple {815#(<= main_~a~0 0)} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {815#(<= main_~a~0 0)} is VALID [2022-04-08 10:32:35,714 INFO L290 TraceCheckUtils]: 9: Hoare triple {815#(<= main_~a~0 0)} assume !!(~b~0 < 6); {815#(<= main_~a~0 0)} is VALID [2022-04-08 10:32:35,715 INFO L290 TraceCheckUtils]: 10: Hoare triple {815#(<= main_~a~0 0)} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {815#(<= main_~a~0 0)} is VALID [2022-04-08 10:32:35,715 INFO L290 TraceCheckUtils]: 11: Hoare triple {815#(<= main_~a~0 0)} assume !(~b~0 < 6); {815#(<= main_~a~0 0)} is VALID [2022-04-08 10:32:35,715 INFO L290 TraceCheckUtils]: 12: Hoare triple {815#(<= main_~a~0 0)} #t~pre4 := 1 + ~a~0;~a~0 := 1 + ~a~0;havoc #t~pre4; {837#(<= main_~a~0 1)} is VALID [2022-04-08 10:32:35,716 INFO L290 TraceCheckUtils]: 13: Hoare triple {837#(<= main_~a~0 1)} assume !!(~a~0 < 6);~b~0 := 0; {837#(<= main_~a~0 1)} is VALID [2022-04-08 10:32:35,716 INFO L290 TraceCheckUtils]: 14: Hoare triple {837#(<= main_~a~0 1)} assume !!(~b~0 < 6); {837#(<= main_~a~0 1)} is VALID [2022-04-08 10:32:35,717 INFO L290 TraceCheckUtils]: 15: Hoare triple {837#(<= main_~a~0 1)} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {837#(<= main_~a~0 1)} is VALID [2022-04-08 10:32:35,717 INFO L290 TraceCheckUtils]: 16: Hoare triple {837#(<= main_~a~0 1)} assume !!(~b~0 < 6); {837#(<= main_~a~0 1)} is VALID [2022-04-08 10:32:35,717 INFO L290 TraceCheckUtils]: 17: Hoare triple {837#(<= main_~a~0 1)} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {837#(<= main_~a~0 1)} is VALID [2022-04-08 10:32:35,718 INFO L290 TraceCheckUtils]: 18: Hoare triple {837#(<= main_~a~0 1)} assume !(~b~0 < 6); {837#(<= main_~a~0 1)} is VALID [2022-04-08 10:32:35,722 INFO L290 TraceCheckUtils]: 19: Hoare triple {837#(<= main_~a~0 1)} #t~pre4 := 1 + ~a~0;~a~0 := 1 + ~a~0;havoc #t~pre4; {859#(<= main_~a~0 2)} is VALID [2022-04-08 10:32:35,723 INFO L290 TraceCheckUtils]: 20: Hoare triple {859#(<= main_~a~0 2)} assume !(~a~0 < 6); {789#false} is VALID [2022-04-08 10:32:35,723 INFO L290 TraceCheckUtils]: 21: Hoare triple {789#false} assume !(6 == ~a~0 && 6 == ~b~0); {789#false} is VALID [2022-04-08 10:32:35,723 INFO L290 TraceCheckUtils]: 22: Hoare triple {789#false} assume !false; {789#false} is VALID [2022-04-08 10:32:35,723 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-04-08 10:32:35,723 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-08 10:32:35,846 INFO L290 TraceCheckUtils]: 22: Hoare triple {789#false} assume !false; {789#false} is VALID [2022-04-08 10:32:35,847 INFO L290 TraceCheckUtils]: 21: Hoare triple {789#false} assume !(6 == ~a~0 && 6 == ~b~0); {789#false} is VALID [2022-04-08 10:32:35,847 INFO L290 TraceCheckUtils]: 20: Hoare triple {875#(< main_~a~0 6)} assume !(~a~0 < 6); {789#false} is VALID [2022-04-08 10:32:35,848 INFO L290 TraceCheckUtils]: 19: Hoare triple {879#(< main_~a~0 5)} #t~pre4 := 1 + ~a~0;~a~0 := 1 + ~a~0;havoc #t~pre4; {875#(< main_~a~0 6)} is VALID [2022-04-08 10:32:35,848 INFO L290 TraceCheckUtils]: 18: Hoare triple {879#(< main_~a~0 5)} assume !(~b~0 < 6); {879#(< main_~a~0 5)} is VALID [2022-04-08 10:32:35,848 INFO L290 TraceCheckUtils]: 17: Hoare triple {879#(< main_~a~0 5)} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {879#(< main_~a~0 5)} is VALID [2022-04-08 10:32:35,849 INFO L290 TraceCheckUtils]: 16: Hoare triple {879#(< main_~a~0 5)} assume !!(~b~0 < 6); {879#(< main_~a~0 5)} is VALID [2022-04-08 10:32:35,849 INFO L290 TraceCheckUtils]: 15: Hoare triple {879#(< main_~a~0 5)} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {879#(< main_~a~0 5)} is VALID [2022-04-08 10:32:35,849 INFO L290 TraceCheckUtils]: 14: Hoare triple {879#(< main_~a~0 5)} assume !!(~b~0 < 6); {879#(< main_~a~0 5)} is VALID [2022-04-08 10:32:35,849 INFO L290 TraceCheckUtils]: 13: Hoare triple {879#(< main_~a~0 5)} assume !!(~a~0 < 6);~b~0 := 0; {879#(< main_~a~0 5)} is VALID [2022-04-08 10:32:35,850 INFO L290 TraceCheckUtils]: 12: Hoare triple {901#(< main_~a~0 4)} #t~pre4 := 1 + ~a~0;~a~0 := 1 + ~a~0;havoc #t~pre4; {879#(< main_~a~0 5)} is VALID [2022-04-08 10:32:35,850 INFO L290 TraceCheckUtils]: 11: Hoare triple {901#(< main_~a~0 4)} assume !(~b~0 < 6); {901#(< main_~a~0 4)} is VALID [2022-04-08 10:32:35,851 INFO L290 TraceCheckUtils]: 10: Hoare triple {901#(< main_~a~0 4)} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {901#(< main_~a~0 4)} is VALID [2022-04-08 10:32:35,854 INFO L290 TraceCheckUtils]: 9: Hoare triple {901#(< main_~a~0 4)} assume !!(~b~0 < 6); {901#(< main_~a~0 4)} is VALID [2022-04-08 10:32:35,854 INFO L290 TraceCheckUtils]: 8: Hoare triple {901#(< main_~a~0 4)} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {901#(< main_~a~0 4)} is VALID [2022-04-08 10:32:35,854 INFO L290 TraceCheckUtils]: 7: Hoare triple {901#(< main_~a~0 4)} assume !!(~b~0 < 6); {901#(< main_~a~0 4)} is VALID [2022-04-08 10:32:35,855 INFO L290 TraceCheckUtils]: 6: Hoare triple {901#(< main_~a~0 4)} assume !!(~a~0 < 6);~b~0 := 0; {901#(< main_~a~0 4)} is VALID [2022-04-08 10:32:35,855 INFO L290 TraceCheckUtils]: 5: Hoare triple {788#true} ~a~0 := 6;~b~0 := 6;~a~0 := 0; {901#(< main_~a~0 4)} is VALID [2022-04-08 10:32:35,855 INFO L272 TraceCheckUtils]: 4: Hoare triple {788#true} call #t~ret6 := main(); {788#true} is VALID [2022-04-08 10:32:35,855 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {788#true} {788#true} #44#return; {788#true} is VALID [2022-04-08 10:32:35,855 INFO L290 TraceCheckUtils]: 2: Hoare triple {788#true} assume true; {788#true} is VALID [2022-04-08 10:32:35,856 INFO L290 TraceCheckUtils]: 1: Hoare triple {788#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(11, 2);call #Ultimate.allocInit(12, 3); {788#true} is VALID [2022-04-08 10:32:35,856 INFO L272 TraceCheckUtils]: 0: Hoare triple {788#true} call ULTIMATE.init(); {788#true} is VALID [2022-04-08 10:32:35,856 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-04-08 10:32:35,856 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [605247600] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-08 10:32:35,856 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-08 10:32:35,856 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 12 [2022-04-08 10:32:35,856 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-08 10:32:35,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [320940975] [2022-04-08 10:32:35,857 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [320940975] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-08 10:32:35,857 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-08 10:32:35,857 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-08 10:32:35,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725824816] [2022-04-08 10:32:35,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-08 10:32:35,857 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 states have internal predecessors, (17), 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 23 [2022-04-08 10:32:35,857 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-08 10:32:35,857 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 states have internal predecessors, (17), 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) [2022-04-08 10:32:35,872 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 20 edges. 20 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 10:32:35,873 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-08 10:32:35,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-08 10:32:35,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-08 10:32:35,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-04-08 10:32:35,873 INFO L87 Difference]: Start difference. First operand 24 states and 26 transitions. Second operand has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 states have internal predecessors, (17), 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) [2022-04-08 10:32:35,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 10:32:35,964 INFO L93 Difference]: Finished difference Result 42 states and 47 transitions. [2022-04-08 10:32:35,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-08 10:32:35,964 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 states have internal predecessors, (17), 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 23 [2022-04-08 10:32:35,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-08 10:32:35,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 states have internal predecessors, (17), 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) [2022-04-08 10:32:35,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 29 transitions. [2022-04-08 10:32:35,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 states have internal predecessors, (17), 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) [2022-04-08 10:32:35,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 29 transitions. [2022-04-08 10:32:35,966 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 6 states and 29 transitions. [2022-04-08 10:32:35,991 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 29 edges. 29 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 10:32:35,992 INFO L225 Difference]: With dead ends: 42 [2022-04-08 10:32:35,992 INFO L226 Difference]: Without dead ends: 30 [2022-04-08 10:32:35,992 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2022-04-08 10:32:35,993 INFO L913 BasicCegarLoop]: 12 mSDtfsCounter, 15 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-08 10:32:35,993 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 24 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-08 10:32:35,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-04-08 10:32:36,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2022-04-08 10:32:36,008 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-08 10:32:36,008 INFO L82 GeneralOperation]: Start isEquivalent. First operand 30 states. Second operand has 28 states, 24 states have (on average 1.125) internal successors, (27), 24 states have internal predecessors, (27), 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) [2022-04-08 10:32:36,009 INFO L74 IsIncluded]: Start isIncluded. First operand 30 states. Second operand has 28 states, 24 states have (on average 1.125) internal successors, (27), 24 states have internal predecessors, (27), 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) [2022-04-08 10:32:36,009 INFO L87 Difference]: Start difference. First operand 30 states. Second operand has 28 states, 24 states have (on average 1.125) internal successors, (27), 24 states have internal predecessors, (27), 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) [2022-04-08 10:32:36,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 10:32:36,010 INFO L93 Difference]: Finished difference Result 30 states and 32 transitions. [2022-04-08 10:32:36,010 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 32 transitions. [2022-04-08 10:32:36,010 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 10:32:36,010 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 10:32:36,010 INFO L74 IsIncluded]: Start isIncluded. First operand has 28 states, 24 states have (on average 1.125) internal successors, (27), 24 states have internal predecessors, (27), 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) Second operand 30 states. [2022-04-08 10:32:36,010 INFO L87 Difference]: Start difference. First operand has 28 states, 24 states have (on average 1.125) internal successors, (27), 24 states have internal predecessors, (27), 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) Second operand 30 states. [2022-04-08 10:32:36,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 10:32:36,011 INFO L93 Difference]: Finished difference Result 30 states and 32 transitions. [2022-04-08 10:32:36,011 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 32 transitions. [2022-04-08 10:32:36,011 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 10:32:36,011 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 10:32:36,011 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-08 10:32:36,012 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-08 10:32:36,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 24 states have (on average 1.125) internal successors, (27), 24 states have internal predecessors, (27), 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) [2022-04-08 10:32:36,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 30 transitions. [2022-04-08 10:32:36,012 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 30 transitions. Word has length 23 [2022-04-08 10:32:36,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-08 10:32:36,013 INFO L478 AbstractCegarLoop]: Abstraction has 28 states and 30 transitions. [2022-04-08 10:32:36,013 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 states have internal predecessors, (17), 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) [2022-04-08 10:32:36,013 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 28 states and 30 transitions. [2022-04-08 10:32:36,036 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 30 edges. 30 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 10:32:36,037 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 30 transitions. [2022-04-08 10:32:36,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-04-08 10:32:36,037 INFO L491 BasicCegarLoop]: Found error trace [2022-04-08 10:32:36,037 INFO L499 BasicCegarLoop]: trace histogram [6, 6, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-08 10:32:36,056 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-04-08 10:32:36,254 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-08 10:32:36,254 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-08 10:32:36,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-08 10:32:36,255 INFO L85 PathProgramCache]: Analyzing trace with hash -7293261, now seen corresponding path program 7 times [2022-04-08 10:32:36,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-08 10:32:36,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [987569304] [2022-04-08 10:32:36,318 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Cannot deal with arrays. [2022-04-08 10:32:36,330 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Cannot deal with arrays. [2022-04-08 10:32:36,330 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-08 10:32:36,330 INFO L85 PathProgramCache]: Analyzing trace with hash -7293261, now seen corresponding path program 8 times [2022-04-08 10:32:36,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-08 10:32:36,330 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747267436] [2022-04-08 10:32:36,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-08 10:32:36,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-08 10:32:36,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 10:32:36,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-08 10:32:36,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 10:32:36,376 INFO L290 TraceCheckUtils]: 0: Hoare triple {1155#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(11, 2);call #Ultimate.allocInit(12, 3); {1146#true} is VALID [2022-04-08 10:32:36,377 INFO L290 TraceCheckUtils]: 1: Hoare triple {1146#true} assume true; {1146#true} is VALID [2022-04-08 10:32:36,377 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {1146#true} {1146#true} #44#return; {1146#true} is VALID [2022-04-08 10:32:36,377 INFO L272 TraceCheckUtils]: 0: Hoare triple {1146#true} call ULTIMATE.init(); {1155#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-08 10:32:36,377 INFO L290 TraceCheckUtils]: 1: Hoare triple {1155#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(11, 2);call #Ultimate.allocInit(12, 3); {1146#true} is VALID [2022-04-08 10:32:36,377 INFO L290 TraceCheckUtils]: 2: Hoare triple {1146#true} assume true; {1146#true} is VALID [2022-04-08 10:32:36,377 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {1146#true} {1146#true} #44#return; {1146#true} is VALID [2022-04-08 10:32:36,378 INFO L272 TraceCheckUtils]: 4: Hoare triple {1146#true} call #t~ret6 := main(); {1146#true} is VALID [2022-04-08 10:32:36,378 INFO L290 TraceCheckUtils]: 5: Hoare triple {1146#true} ~a~0 := 6;~b~0 := 6;~a~0 := 0; {1146#true} is VALID [2022-04-08 10:32:36,380 INFO L290 TraceCheckUtils]: 6: Hoare triple {1146#true} assume !!(~a~0 < 6);~b~0 := 0; {1151#(= main_~b~0 0)} is VALID [2022-04-08 10:32:36,380 INFO L290 TraceCheckUtils]: 7: Hoare triple {1151#(= main_~b~0 0)} assume !!(~b~0 < 6); {1151#(= main_~b~0 0)} is VALID [2022-04-08 10:32:36,381 INFO L290 TraceCheckUtils]: 8: Hoare triple {1151#(= main_~b~0 0)} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {1152#(<= main_~b~0 1)} is VALID [2022-04-08 10:32:36,381 INFO L290 TraceCheckUtils]: 9: Hoare triple {1152#(<= main_~b~0 1)} assume !!(~b~0 < 6); {1152#(<= main_~b~0 1)} is VALID [2022-04-08 10:32:36,381 INFO L290 TraceCheckUtils]: 10: Hoare triple {1152#(<= main_~b~0 1)} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {1153#(<= main_~b~0 2)} is VALID [2022-04-08 10:32:36,381 INFO L290 TraceCheckUtils]: 11: Hoare triple {1153#(<= main_~b~0 2)} assume !!(~b~0 < 6); {1153#(<= main_~b~0 2)} is VALID [2022-04-08 10:32:36,382 INFO L290 TraceCheckUtils]: 12: Hoare triple {1153#(<= main_~b~0 2)} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {1154#(<= main_~b~0 3)} is VALID [2022-04-08 10:32:36,382 INFO L290 TraceCheckUtils]: 13: Hoare triple {1154#(<= main_~b~0 3)} assume !(~b~0 < 6); {1147#false} is VALID [2022-04-08 10:32:36,382 INFO L290 TraceCheckUtils]: 14: Hoare triple {1147#false} #t~pre4 := 1 + ~a~0;~a~0 := 1 + ~a~0;havoc #t~pre4; {1147#false} is VALID [2022-04-08 10:32:36,382 INFO L290 TraceCheckUtils]: 15: Hoare triple {1147#false} assume !!(~a~0 < 6);~b~0 := 0; {1147#false} is VALID [2022-04-08 10:32:36,382 INFO L290 TraceCheckUtils]: 16: Hoare triple {1147#false} assume !!(~b~0 < 6); {1147#false} is VALID [2022-04-08 10:32:36,382 INFO L290 TraceCheckUtils]: 17: Hoare triple {1147#false} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {1147#false} is VALID [2022-04-08 10:32:36,382 INFO L290 TraceCheckUtils]: 18: Hoare triple {1147#false} assume !!(~b~0 < 6); {1147#false} is VALID [2022-04-08 10:32:36,383 INFO L290 TraceCheckUtils]: 19: Hoare triple {1147#false} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {1147#false} is VALID [2022-04-08 10:32:36,383 INFO L290 TraceCheckUtils]: 20: Hoare triple {1147#false} assume !!(~b~0 < 6); {1147#false} is VALID [2022-04-08 10:32:36,383 INFO L290 TraceCheckUtils]: 21: Hoare triple {1147#false} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {1147#false} is VALID [2022-04-08 10:32:36,383 INFO L290 TraceCheckUtils]: 22: Hoare triple {1147#false} assume !(~b~0 < 6); {1147#false} is VALID [2022-04-08 10:32:36,383 INFO L290 TraceCheckUtils]: 23: Hoare triple {1147#false} #t~pre4 := 1 + ~a~0;~a~0 := 1 + ~a~0;havoc #t~pre4; {1147#false} is VALID [2022-04-08 10:32:36,383 INFO L290 TraceCheckUtils]: 24: Hoare triple {1147#false} assume !(~a~0 < 6); {1147#false} is VALID [2022-04-08 10:32:36,383 INFO L290 TraceCheckUtils]: 25: Hoare triple {1147#false} assume !(6 == ~a~0 && 6 == ~b~0); {1147#false} is VALID [2022-04-08 10:32:36,383 INFO L290 TraceCheckUtils]: 26: Hoare triple {1147#false} assume !false; {1147#false} is VALID [2022-04-08 10:32:36,383 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 27 proven. 9 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-04-08 10:32:36,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-08 10:32:36,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747267436] [2022-04-08 10:32:36,384 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747267436] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-08 10:32:36,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [800468714] [2022-04-08 10:32:36,384 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-08 10:32:36,384 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-08 10:32:36,384 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-08 10:32:36,400 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-08 10:32:36,463 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-04-08 10:32:36,491 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-08 10:32:36,491 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-08 10:32:36,492 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 5 conjunts are in the unsatisfiable core [2022-04-08 10:32:36,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 10:32:36,499 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-08 10:32:36,567 INFO L272 TraceCheckUtils]: 0: Hoare triple {1146#true} call ULTIMATE.init(); {1146#true} is VALID [2022-04-08 10:32:36,567 INFO L290 TraceCheckUtils]: 1: Hoare triple {1146#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(11, 2);call #Ultimate.allocInit(12, 3); {1146#true} is VALID [2022-04-08 10:32:36,567 INFO L290 TraceCheckUtils]: 2: Hoare triple {1146#true} assume true; {1146#true} is VALID [2022-04-08 10:32:36,567 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {1146#true} {1146#true} #44#return; {1146#true} is VALID [2022-04-08 10:32:36,567 INFO L272 TraceCheckUtils]: 4: Hoare triple {1146#true} call #t~ret6 := main(); {1146#true} is VALID [2022-04-08 10:32:36,567 INFO L290 TraceCheckUtils]: 5: Hoare triple {1146#true} ~a~0 := 6;~b~0 := 6;~a~0 := 0; {1146#true} is VALID [2022-04-08 10:32:36,568 INFO L290 TraceCheckUtils]: 6: Hoare triple {1146#true} assume !!(~a~0 < 6);~b~0 := 0; {1177#(<= main_~b~0 0)} is VALID [2022-04-08 10:32:36,568 INFO L290 TraceCheckUtils]: 7: Hoare triple {1177#(<= main_~b~0 0)} assume !!(~b~0 < 6); {1177#(<= main_~b~0 0)} is VALID [2022-04-08 10:32:36,568 INFO L290 TraceCheckUtils]: 8: Hoare triple {1177#(<= main_~b~0 0)} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {1152#(<= main_~b~0 1)} is VALID [2022-04-08 10:32:36,569 INFO L290 TraceCheckUtils]: 9: Hoare triple {1152#(<= main_~b~0 1)} assume !!(~b~0 < 6); {1152#(<= main_~b~0 1)} is VALID [2022-04-08 10:32:36,569 INFO L290 TraceCheckUtils]: 10: Hoare triple {1152#(<= main_~b~0 1)} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {1153#(<= main_~b~0 2)} is VALID [2022-04-08 10:32:36,569 INFO L290 TraceCheckUtils]: 11: Hoare triple {1153#(<= main_~b~0 2)} assume !!(~b~0 < 6); {1153#(<= main_~b~0 2)} is VALID [2022-04-08 10:32:36,570 INFO L290 TraceCheckUtils]: 12: Hoare triple {1153#(<= main_~b~0 2)} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {1154#(<= main_~b~0 3)} is VALID [2022-04-08 10:32:36,570 INFO L290 TraceCheckUtils]: 13: Hoare triple {1154#(<= main_~b~0 3)} assume !(~b~0 < 6); {1147#false} is VALID [2022-04-08 10:32:36,570 INFO L290 TraceCheckUtils]: 14: Hoare triple {1147#false} #t~pre4 := 1 + ~a~0;~a~0 := 1 + ~a~0;havoc #t~pre4; {1147#false} is VALID [2022-04-08 10:32:36,570 INFO L290 TraceCheckUtils]: 15: Hoare triple {1147#false} assume !!(~a~0 < 6);~b~0 := 0; {1147#false} is VALID [2022-04-08 10:32:36,570 INFO L290 TraceCheckUtils]: 16: Hoare triple {1147#false} assume !!(~b~0 < 6); {1147#false} is VALID [2022-04-08 10:32:36,570 INFO L290 TraceCheckUtils]: 17: Hoare triple {1147#false} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {1147#false} is VALID [2022-04-08 10:32:36,570 INFO L290 TraceCheckUtils]: 18: Hoare triple {1147#false} assume !!(~b~0 < 6); {1147#false} is VALID [2022-04-08 10:32:36,571 INFO L290 TraceCheckUtils]: 19: Hoare triple {1147#false} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {1147#false} is VALID [2022-04-08 10:32:36,571 INFO L290 TraceCheckUtils]: 20: Hoare triple {1147#false} assume !!(~b~0 < 6); {1147#false} is VALID [2022-04-08 10:32:36,571 INFO L290 TraceCheckUtils]: 21: Hoare triple {1147#false} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {1147#false} is VALID [2022-04-08 10:32:36,571 INFO L290 TraceCheckUtils]: 22: Hoare triple {1147#false} assume !(~b~0 < 6); {1147#false} is VALID [2022-04-08 10:32:36,571 INFO L290 TraceCheckUtils]: 23: Hoare triple {1147#false} #t~pre4 := 1 + ~a~0;~a~0 := 1 + ~a~0;havoc #t~pre4; {1147#false} is VALID [2022-04-08 10:32:36,571 INFO L290 TraceCheckUtils]: 24: Hoare triple {1147#false} assume !(~a~0 < 6); {1147#false} is VALID [2022-04-08 10:32:36,571 INFO L290 TraceCheckUtils]: 25: Hoare triple {1147#false} assume !(6 == ~a~0 && 6 == ~b~0); {1147#false} is VALID [2022-04-08 10:32:36,571 INFO L290 TraceCheckUtils]: 26: Hoare triple {1147#false} assume !false; {1147#false} is VALID [2022-04-08 10:32:36,571 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 27 proven. 9 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-04-08 10:32:36,571 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-08 10:32:36,657 INFO L290 TraceCheckUtils]: 26: Hoare triple {1147#false} assume !false; {1147#false} is VALID [2022-04-08 10:32:36,658 INFO L290 TraceCheckUtils]: 25: Hoare triple {1147#false} assume !(6 == ~a~0 && 6 == ~b~0); {1147#false} is VALID [2022-04-08 10:32:36,658 INFO L290 TraceCheckUtils]: 24: Hoare triple {1147#false} assume !(~a~0 < 6); {1147#false} is VALID [2022-04-08 10:32:36,658 INFO L290 TraceCheckUtils]: 23: Hoare triple {1147#false} #t~pre4 := 1 + ~a~0;~a~0 := 1 + ~a~0;havoc #t~pre4; {1147#false} is VALID [2022-04-08 10:32:36,658 INFO L290 TraceCheckUtils]: 22: Hoare triple {1147#false} assume !(~b~0 < 6); {1147#false} is VALID [2022-04-08 10:32:36,658 INFO L290 TraceCheckUtils]: 21: Hoare triple {1147#false} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {1147#false} is VALID [2022-04-08 10:32:36,658 INFO L290 TraceCheckUtils]: 20: Hoare triple {1147#false} assume !!(~b~0 < 6); {1147#false} is VALID [2022-04-08 10:32:36,658 INFO L290 TraceCheckUtils]: 19: Hoare triple {1147#false} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {1147#false} is VALID [2022-04-08 10:32:36,658 INFO L290 TraceCheckUtils]: 18: Hoare triple {1147#false} assume !!(~b~0 < 6); {1147#false} is VALID [2022-04-08 10:32:36,658 INFO L290 TraceCheckUtils]: 17: Hoare triple {1147#false} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {1147#false} is VALID [2022-04-08 10:32:36,658 INFO L290 TraceCheckUtils]: 16: Hoare triple {1147#false} assume !!(~b~0 < 6); {1147#false} is VALID [2022-04-08 10:32:36,659 INFO L290 TraceCheckUtils]: 15: Hoare triple {1147#false} assume !!(~a~0 < 6);~b~0 := 0; {1147#false} is VALID [2022-04-08 10:32:36,659 INFO L290 TraceCheckUtils]: 14: Hoare triple {1147#false} #t~pre4 := 1 + ~a~0;~a~0 := 1 + ~a~0;havoc #t~pre4; {1147#false} is VALID [2022-04-08 10:32:36,659 INFO L290 TraceCheckUtils]: 13: Hoare triple {1277#(< main_~b~0 6)} assume !(~b~0 < 6); {1147#false} is VALID [2022-04-08 10:32:36,659 INFO L290 TraceCheckUtils]: 12: Hoare triple {1281#(< main_~b~0 5)} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {1277#(< main_~b~0 6)} is VALID [2022-04-08 10:32:36,660 INFO L290 TraceCheckUtils]: 11: Hoare triple {1281#(< main_~b~0 5)} assume !!(~b~0 < 6); {1281#(< main_~b~0 5)} is VALID [2022-04-08 10:32:36,660 INFO L290 TraceCheckUtils]: 10: Hoare triple {1154#(<= main_~b~0 3)} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {1281#(< main_~b~0 5)} is VALID [2022-04-08 10:32:36,660 INFO L290 TraceCheckUtils]: 9: Hoare triple {1154#(<= main_~b~0 3)} assume !!(~b~0 < 6); {1154#(<= main_~b~0 3)} is VALID [2022-04-08 10:32:36,661 INFO L290 TraceCheckUtils]: 8: Hoare triple {1153#(<= main_~b~0 2)} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {1154#(<= main_~b~0 3)} is VALID [2022-04-08 10:32:36,661 INFO L290 TraceCheckUtils]: 7: Hoare triple {1153#(<= main_~b~0 2)} assume !!(~b~0 < 6); {1153#(<= main_~b~0 2)} is VALID [2022-04-08 10:32:36,661 INFO L290 TraceCheckUtils]: 6: Hoare triple {1146#true} assume !!(~a~0 < 6);~b~0 := 0; {1153#(<= main_~b~0 2)} is VALID [2022-04-08 10:32:36,661 INFO L290 TraceCheckUtils]: 5: Hoare triple {1146#true} ~a~0 := 6;~b~0 := 6;~a~0 := 0; {1146#true} is VALID [2022-04-08 10:32:36,661 INFO L272 TraceCheckUtils]: 4: Hoare triple {1146#true} call #t~ret6 := main(); {1146#true} is VALID [2022-04-08 10:32:36,661 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {1146#true} {1146#true} #44#return; {1146#true} is VALID [2022-04-08 10:32:36,661 INFO L290 TraceCheckUtils]: 2: Hoare triple {1146#true} assume true; {1146#true} is VALID [2022-04-08 10:32:36,661 INFO L290 TraceCheckUtils]: 1: Hoare triple {1146#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(11, 2);call #Ultimate.allocInit(12, 3); {1146#true} is VALID [2022-04-08 10:32:36,662 INFO L272 TraceCheckUtils]: 0: Hoare triple {1146#true} call ULTIMATE.init(); {1146#true} is VALID [2022-04-08 10:32:36,662 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 27 proven. 9 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-04-08 10:32:36,662 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [800468714] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-08 10:32:36,662 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-08 10:32:36,662 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 10 [2022-04-08 10:32:36,662 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-08 10:32:36,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [987569304] [2022-04-08 10:32:36,662 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [987569304] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-08 10:32:36,662 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-08 10:32:36,662 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-04-08 10:32:36,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990843005] [2022-04-08 10:32:36,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-08 10:32:36,663 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 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 27 [2022-04-08 10:32:36,663 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-08 10:32:36,663 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 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) [2022-04-08 10:32:36,675 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 22 edges. 22 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 10:32:36,675 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-04-08 10:32:36,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-08 10:32:36,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-04-08 10:32:36,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2022-04-08 10:32:36,676 INFO L87 Difference]: Start difference. First operand 28 states and 30 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 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) [2022-04-08 10:32:36,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 10:32:36,770 INFO L93 Difference]: Finished difference Result 48 states and 53 transitions. [2022-04-08 10:32:36,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-04-08 10:32:36,770 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 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 27 [2022-04-08 10:32:36,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-08 10:32:36,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 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) [2022-04-08 10:32:36,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 31 transitions. [2022-04-08 10:32:36,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 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) [2022-04-08 10:32:36,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 31 transitions. [2022-04-08 10:32:36,772 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 7 states and 31 transitions. [2022-04-08 10:32:36,787 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 31 edges. 31 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 10:32:36,788 INFO L225 Difference]: With dead ends: 48 [2022-04-08 10:32:36,788 INFO L226 Difference]: Without dead ends: 34 [2022-04-08 10:32:36,788 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 52 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=107, Unknown=0, NotChecked=0, Total=182 [2022-04-08 10:32:36,789 INFO L913 BasicCegarLoop]: 12 mSDtfsCounter, 17 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-08 10:32:36,789 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 24 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-08 10:32:36,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-04-08 10:32:36,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32. [2022-04-08 10:32:36,803 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-08 10:32:36,803 INFO L82 GeneralOperation]: Start isEquivalent. First operand 34 states. Second operand has 32 states, 28 states have (on average 1.1071428571428572) internal successors, (31), 28 states have internal predecessors, (31), 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) [2022-04-08 10:32:36,803 INFO L74 IsIncluded]: Start isIncluded. First operand 34 states. Second operand has 32 states, 28 states have (on average 1.1071428571428572) internal successors, (31), 28 states have internal predecessors, (31), 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) [2022-04-08 10:32:36,803 INFO L87 Difference]: Start difference. First operand 34 states. Second operand has 32 states, 28 states have (on average 1.1071428571428572) internal successors, (31), 28 states have internal predecessors, (31), 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) [2022-04-08 10:32:36,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 10:32:36,804 INFO L93 Difference]: Finished difference Result 34 states and 36 transitions. [2022-04-08 10:32:36,804 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 36 transitions. [2022-04-08 10:32:36,805 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 10:32:36,805 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 10:32:36,805 INFO L74 IsIncluded]: Start isIncluded. First operand has 32 states, 28 states have (on average 1.1071428571428572) internal successors, (31), 28 states have internal predecessors, (31), 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) Second operand 34 states. [2022-04-08 10:32:36,805 INFO L87 Difference]: Start difference. First operand has 32 states, 28 states have (on average 1.1071428571428572) internal successors, (31), 28 states have internal predecessors, (31), 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) Second operand 34 states. [2022-04-08 10:32:36,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 10:32:36,806 INFO L93 Difference]: Finished difference Result 34 states and 36 transitions. [2022-04-08 10:32:36,806 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 36 transitions. [2022-04-08 10:32:36,806 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 10:32:36,806 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 10:32:36,806 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-08 10:32:36,806 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-08 10:32:36,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 28 states have (on average 1.1071428571428572) internal successors, (31), 28 states have internal predecessors, (31), 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) [2022-04-08 10:32:36,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 34 transitions. [2022-04-08 10:32:36,807 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 34 transitions. Word has length 27 [2022-04-08 10:32:36,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-08 10:32:36,807 INFO L478 AbstractCegarLoop]: Abstraction has 32 states and 34 transitions. [2022-04-08 10:32:36,807 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 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) [2022-04-08 10:32:36,807 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 32 states and 34 transitions. [2022-04-08 10:32:36,841 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 34 edges. 34 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 10:32:36,841 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 34 transitions. [2022-04-08 10:32:36,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-04-08 10:32:36,842 INFO L491 BasicCegarLoop]: Found error trace [2022-04-08 10:32:36,842 INFO L499 BasicCegarLoop]: trace histogram [8, 8, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-08 10:32:36,865 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-04-08 10:32:37,058 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-08 10:32:37,059 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-08 10:32:37,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-08 10:32:37,059 INFO L85 PathProgramCache]: Analyzing trace with hash 648956467, now seen corresponding path program 9 times [2022-04-08 10:32:37,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-08 10:32:37,059 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [755235244] [2022-04-08 10:32:37,127 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Cannot deal with arrays. [2022-04-08 10:32:37,138 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Cannot deal with arrays. [2022-04-08 10:32:37,138 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-08 10:32:37,138 INFO L85 PathProgramCache]: Analyzing trace with hash 648956467, now seen corresponding path program 10 times [2022-04-08 10:32:37,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-08 10:32:37,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191379643] [2022-04-08 10:32:37,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-08 10:32:37,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-08 10:32:37,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 10:32:37,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-08 10:32:37,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 10:32:37,188 INFO L290 TraceCheckUtils]: 0: Hoare triple {1566#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(11, 2);call #Ultimate.allocInit(12, 3); {1556#true} is VALID [2022-04-08 10:32:37,188 INFO L290 TraceCheckUtils]: 1: Hoare triple {1556#true} assume true; {1556#true} is VALID [2022-04-08 10:32:37,188 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {1556#true} {1556#true} #44#return; {1556#true} is VALID [2022-04-08 10:32:37,188 INFO L272 TraceCheckUtils]: 0: Hoare triple {1556#true} call ULTIMATE.init(); {1566#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-08 10:32:37,188 INFO L290 TraceCheckUtils]: 1: Hoare triple {1566#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(11, 2);call #Ultimate.allocInit(12, 3); {1556#true} is VALID [2022-04-08 10:32:37,189 INFO L290 TraceCheckUtils]: 2: Hoare triple {1556#true} assume true; {1556#true} is VALID [2022-04-08 10:32:37,189 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {1556#true} {1556#true} #44#return; {1556#true} is VALID [2022-04-08 10:32:37,189 INFO L272 TraceCheckUtils]: 4: Hoare triple {1556#true} call #t~ret6 := main(); {1556#true} is VALID [2022-04-08 10:32:37,189 INFO L290 TraceCheckUtils]: 5: Hoare triple {1556#true} ~a~0 := 6;~b~0 := 6;~a~0 := 0; {1556#true} is VALID [2022-04-08 10:32:37,189 INFO L290 TraceCheckUtils]: 6: Hoare triple {1556#true} assume !!(~a~0 < 6);~b~0 := 0; {1561#(= main_~b~0 0)} is VALID [2022-04-08 10:32:37,189 INFO L290 TraceCheckUtils]: 7: Hoare triple {1561#(= main_~b~0 0)} assume !!(~b~0 < 6); {1561#(= main_~b~0 0)} is VALID [2022-04-08 10:32:37,190 INFO L290 TraceCheckUtils]: 8: Hoare triple {1561#(= main_~b~0 0)} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {1562#(<= main_~b~0 1)} is VALID [2022-04-08 10:32:37,190 INFO L290 TraceCheckUtils]: 9: Hoare triple {1562#(<= main_~b~0 1)} assume !!(~b~0 < 6); {1562#(<= main_~b~0 1)} is VALID [2022-04-08 10:32:37,191 INFO L290 TraceCheckUtils]: 10: Hoare triple {1562#(<= main_~b~0 1)} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {1563#(<= main_~b~0 2)} is VALID [2022-04-08 10:32:37,191 INFO L290 TraceCheckUtils]: 11: Hoare triple {1563#(<= main_~b~0 2)} assume !!(~b~0 < 6); {1563#(<= main_~b~0 2)} is VALID [2022-04-08 10:32:37,191 INFO L290 TraceCheckUtils]: 12: Hoare triple {1563#(<= main_~b~0 2)} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {1564#(<= main_~b~0 3)} is VALID [2022-04-08 10:32:37,191 INFO L290 TraceCheckUtils]: 13: Hoare triple {1564#(<= main_~b~0 3)} assume !!(~b~0 < 6); {1564#(<= main_~b~0 3)} is VALID [2022-04-08 10:32:37,192 INFO L290 TraceCheckUtils]: 14: Hoare triple {1564#(<= main_~b~0 3)} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {1565#(<= main_~b~0 4)} is VALID [2022-04-08 10:32:37,192 INFO L290 TraceCheckUtils]: 15: Hoare triple {1565#(<= main_~b~0 4)} assume !(~b~0 < 6); {1557#false} is VALID [2022-04-08 10:32:37,192 INFO L290 TraceCheckUtils]: 16: Hoare triple {1557#false} #t~pre4 := 1 + ~a~0;~a~0 := 1 + ~a~0;havoc #t~pre4; {1557#false} is VALID [2022-04-08 10:32:37,192 INFO L290 TraceCheckUtils]: 17: Hoare triple {1557#false} assume !!(~a~0 < 6);~b~0 := 0; {1557#false} is VALID [2022-04-08 10:32:37,193 INFO L290 TraceCheckUtils]: 18: Hoare triple {1557#false} assume !!(~b~0 < 6); {1557#false} is VALID [2022-04-08 10:32:37,193 INFO L290 TraceCheckUtils]: 19: Hoare triple {1557#false} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {1557#false} is VALID [2022-04-08 10:32:37,193 INFO L290 TraceCheckUtils]: 20: Hoare triple {1557#false} assume !!(~b~0 < 6); {1557#false} is VALID [2022-04-08 10:32:37,193 INFO L290 TraceCheckUtils]: 21: Hoare triple {1557#false} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {1557#false} is VALID [2022-04-08 10:32:37,193 INFO L290 TraceCheckUtils]: 22: Hoare triple {1557#false} assume !!(~b~0 < 6); {1557#false} is VALID [2022-04-08 10:32:37,193 INFO L290 TraceCheckUtils]: 23: Hoare triple {1557#false} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {1557#false} is VALID [2022-04-08 10:32:37,193 INFO L290 TraceCheckUtils]: 24: Hoare triple {1557#false} assume !!(~b~0 < 6); {1557#false} is VALID [2022-04-08 10:32:37,193 INFO L290 TraceCheckUtils]: 25: Hoare triple {1557#false} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {1557#false} is VALID [2022-04-08 10:32:37,193 INFO L290 TraceCheckUtils]: 26: Hoare triple {1557#false} assume !(~b~0 < 6); {1557#false} is VALID [2022-04-08 10:32:37,193 INFO L290 TraceCheckUtils]: 27: Hoare triple {1557#false} #t~pre4 := 1 + ~a~0;~a~0 := 1 + ~a~0;havoc #t~pre4; {1557#false} is VALID [2022-04-08 10:32:37,193 INFO L290 TraceCheckUtils]: 28: Hoare triple {1557#false} assume !(~a~0 < 6); {1557#false} is VALID [2022-04-08 10:32:37,194 INFO L290 TraceCheckUtils]: 29: Hoare triple {1557#false} assume !(6 == ~a~0 && 6 == ~b~0); {1557#false} is VALID [2022-04-08 10:32:37,194 INFO L290 TraceCheckUtils]: 30: Hoare triple {1557#false} assume !false; {1557#false} is VALID [2022-04-08 10:32:37,194 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 43 proven. 16 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-04-08 10:32:37,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-08 10:32:37,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191379643] [2022-04-08 10:32:37,194 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191379643] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-08 10:32:37,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1416781843] [2022-04-08 10:32:37,194 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-04-08 10:32:37,194 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-08 10:32:37,195 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-08 10:32:37,195 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-08 10:32:37,216 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-04-08 10:32:37,249 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-04-08 10:32:37,249 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-08 10:32:37,250 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 6 conjunts are in the unsatisfiable core [2022-04-08 10:32:37,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 10:32:37,257 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-08 10:32:37,349 INFO L272 TraceCheckUtils]: 0: Hoare triple {1556#true} call ULTIMATE.init(); {1556#true} is VALID [2022-04-08 10:32:37,349 INFO L290 TraceCheckUtils]: 1: Hoare triple {1556#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(11, 2);call #Ultimate.allocInit(12, 3); {1556#true} is VALID [2022-04-08 10:32:37,349 INFO L290 TraceCheckUtils]: 2: Hoare triple {1556#true} assume true; {1556#true} is VALID [2022-04-08 10:32:37,350 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {1556#true} {1556#true} #44#return; {1556#true} is VALID [2022-04-08 10:32:37,350 INFO L272 TraceCheckUtils]: 4: Hoare triple {1556#true} call #t~ret6 := main(); {1556#true} is VALID [2022-04-08 10:32:37,350 INFO L290 TraceCheckUtils]: 5: Hoare triple {1556#true} ~a~0 := 6;~b~0 := 6;~a~0 := 0; {1556#true} is VALID [2022-04-08 10:32:37,350 INFO L290 TraceCheckUtils]: 6: Hoare triple {1556#true} assume !!(~a~0 < 6);~b~0 := 0; {1588#(<= main_~b~0 0)} is VALID [2022-04-08 10:32:37,351 INFO L290 TraceCheckUtils]: 7: Hoare triple {1588#(<= main_~b~0 0)} assume !!(~b~0 < 6); {1588#(<= main_~b~0 0)} is VALID [2022-04-08 10:32:37,351 INFO L290 TraceCheckUtils]: 8: Hoare triple {1588#(<= main_~b~0 0)} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {1562#(<= main_~b~0 1)} is VALID [2022-04-08 10:32:37,351 INFO L290 TraceCheckUtils]: 9: Hoare triple {1562#(<= main_~b~0 1)} assume !!(~b~0 < 6); {1562#(<= main_~b~0 1)} is VALID [2022-04-08 10:32:37,352 INFO L290 TraceCheckUtils]: 10: Hoare triple {1562#(<= main_~b~0 1)} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {1563#(<= main_~b~0 2)} is VALID [2022-04-08 10:32:37,352 INFO L290 TraceCheckUtils]: 11: Hoare triple {1563#(<= main_~b~0 2)} assume !!(~b~0 < 6); {1563#(<= main_~b~0 2)} is VALID [2022-04-08 10:32:37,353 INFO L290 TraceCheckUtils]: 12: Hoare triple {1563#(<= main_~b~0 2)} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {1564#(<= main_~b~0 3)} is VALID [2022-04-08 10:32:37,353 INFO L290 TraceCheckUtils]: 13: Hoare triple {1564#(<= main_~b~0 3)} assume !!(~b~0 < 6); {1564#(<= main_~b~0 3)} is VALID [2022-04-08 10:32:37,353 INFO L290 TraceCheckUtils]: 14: Hoare triple {1564#(<= main_~b~0 3)} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {1565#(<= main_~b~0 4)} is VALID [2022-04-08 10:32:37,354 INFO L290 TraceCheckUtils]: 15: Hoare triple {1565#(<= main_~b~0 4)} assume !(~b~0 < 6); {1557#false} is VALID [2022-04-08 10:32:37,354 INFO L290 TraceCheckUtils]: 16: Hoare triple {1557#false} #t~pre4 := 1 + ~a~0;~a~0 := 1 + ~a~0;havoc #t~pre4; {1557#false} is VALID [2022-04-08 10:32:37,354 INFO L290 TraceCheckUtils]: 17: Hoare triple {1557#false} assume !!(~a~0 < 6);~b~0 := 0; {1557#false} is VALID [2022-04-08 10:32:37,354 INFO L290 TraceCheckUtils]: 18: Hoare triple {1557#false} assume !!(~b~0 < 6); {1557#false} is VALID [2022-04-08 10:32:37,354 INFO L290 TraceCheckUtils]: 19: Hoare triple {1557#false} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {1557#false} is VALID [2022-04-08 10:32:37,354 INFO L290 TraceCheckUtils]: 20: Hoare triple {1557#false} assume !!(~b~0 < 6); {1557#false} is VALID [2022-04-08 10:32:37,354 INFO L290 TraceCheckUtils]: 21: Hoare triple {1557#false} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {1557#false} is VALID [2022-04-08 10:32:37,354 INFO L290 TraceCheckUtils]: 22: Hoare triple {1557#false} assume !!(~b~0 < 6); {1557#false} is VALID [2022-04-08 10:32:37,355 INFO L290 TraceCheckUtils]: 23: Hoare triple {1557#false} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {1557#false} is VALID [2022-04-08 10:32:37,359 INFO L290 TraceCheckUtils]: 24: Hoare triple {1557#false} assume !!(~b~0 < 6); {1557#false} is VALID [2022-04-08 10:32:37,359 INFO L290 TraceCheckUtils]: 25: Hoare triple {1557#false} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {1557#false} is VALID [2022-04-08 10:32:37,359 INFO L290 TraceCheckUtils]: 26: Hoare triple {1557#false} assume !(~b~0 < 6); {1557#false} is VALID [2022-04-08 10:32:37,359 INFO L290 TraceCheckUtils]: 27: Hoare triple {1557#false} #t~pre4 := 1 + ~a~0;~a~0 := 1 + ~a~0;havoc #t~pre4; {1557#false} is VALID [2022-04-08 10:32:37,359 INFO L290 TraceCheckUtils]: 28: Hoare triple {1557#false} assume !(~a~0 < 6); {1557#false} is VALID [2022-04-08 10:32:37,359 INFO L290 TraceCheckUtils]: 29: Hoare triple {1557#false} assume !(6 == ~a~0 && 6 == ~b~0); {1557#false} is VALID [2022-04-08 10:32:37,360 INFO L290 TraceCheckUtils]: 30: Hoare triple {1557#false} assume !false; {1557#false} is VALID [2022-04-08 10:32:37,360 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 43 proven. 16 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-04-08 10:32:37,360 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-08 10:32:37,464 INFO L290 TraceCheckUtils]: 30: Hoare triple {1557#false} assume !false; {1557#false} is VALID [2022-04-08 10:32:37,464 INFO L290 TraceCheckUtils]: 29: Hoare triple {1557#false} assume !(6 == ~a~0 && 6 == ~b~0); {1557#false} is VALID [2022-04-08 10:32:37,465 INFO L290 TraceCheckUtils]: 28: Hoare triple {1557#false} assume !(~a~0 < 6); {1557#false} is VALID [2022-04-08 10:32:37,465 INFO L290 TraceCheckUtils]: 27: Hoare triple {1557#false} #t~pre4 := 1 + ~a~0;~a~0 := 1 + ~a~0;havoc #t~pre4; {1557#false} is VALID [2022-04-08 10:32:37,465 INFO L290 TraceCheckUtils]: 26: Hoare triple {1557#false} assume !(~b~0 < 6); {1557#false} is VALID [2022-04-08 10:32:37,465 INFO L290 TraceCheckUtils]: 25: Hoare triple {1557#false} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {1557#false} is VALID [2022-04-08 10:32:37,465 INFO L290 TraceCheckUtils]: 24: Hoare triple {1557#false} assume !!(~b~0 < 6); {1557#false} is VALID [2022-04-08 10:32:37,465 INFO L290 TraceCheckUtils]: 23: Hoare triple {1557#false} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {1557#false} is VALID [2022-04-08 10:32:37,465 INFO L290 TraceCheckUtils]: 22: Hoare triple {1557#false} assume !!(~b~0 < 6); {1557#false} is VALID [2022-04-08 10:32:37,465 INFO L290 TraceCheckUtils]: 21: Hoare triple {1557#false} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {1557#false} is VALID [2022-04-08 10:32:37,465 INFO L290 TraceCheckUtils]: 20: Hoare triple {1557#false} assume !!(~b~0 < 6); {1557#false} is VALID [2022-04-08 10:32:37,465 INFO L290 TraceCheckUtils]: 19: Hoare triple {1557#false} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {1557#false} is VALID [2022-04-08 10:32:37,465 INFO L290 TraceCheckUtils]: 18: Hoare triple {1557#false} assume !!(~b~0 < 6); {1557#false} is VALID [2022-04-08 10:32:37,465 INFO L290 TraceCheckUtils]: 17: Hoare triple {1557#false} assume !!(~a~0 < 6);~b~0 := 0; {1557#false} is VALID [2022-04-08 10:32:37,465 INFO L290 TraceCheckUtils]: 16: Hoare triple {1557#false} #t~pre4 := 1 + ~a~0;~a~0 := 1 + ~a~0;havoc #t~pre4; {1557#false} is VALID [2022-04-08 10:32:37,466 INFO L290 TraceCheckUtils]: 15: Hoare triple {1706#(< main_~b~0 6)} assume !(~b~0 < 6); {1557#false} is VALID [2022-04-08 10:32:37,466 INFO L290 TraceCheckUtils]: 14: Hoare triple {1565#(<= main_~b~0 4)} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {1706#(< main_~b~0 6)} is VALID [2022-04-08 10:32:37,466 INFO L290 TraceCheckUtils]: 13: Hoare triple {1565#(<= main_~b~0 4)} assume !!(~b~0 < 6); {1565#(<= main_~b~0 4)} is VALID [2022-04-08 10:32:37,467 INFO L290 TraceCheckUtils]: 12: Hoare triple {1564#(<= main_~b~0 3)} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {1565#(<= main_~b~0 4)} is VALID [2022-04-08 10:32:37,467 INFO L290 TraceCheckUtils]: 11: Hoare triple {1564#(<= main_~b~0 3)} assume !!(~b~0 < 6); {1564#(<= main_~b~0 3)} is VALID [2022-04-08 10:32:37,467 INFO L290 TraceCheckUtils]: 10: Hoare triple {1563#(<= main_~b~0 2)} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {1564#(<= main_~b~0 3)} is VALID [2022-04-08 10:32:37,468 INFO L290 TraceCheckUtils]: 9: Hoare triple {1563#(<= main_~b~0 2)} assume !!(~b~0 < 6); {1563#(<= main_~b~0 2)} is VALID [2022-04-08 10:32:37,468 INFO L290 TraceCheckUtils]: 8: Hoare triple {1562#(<= main_~b~0 1)} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {1563#(<= main_~b~0 2)} is VALID [2022-04-08 10:32:37,468 INFO L290 TraceCheckUtils]: 7: Hoare triple {1562#(<= main_~b~0 1)} assume !!(~b~0 < 6); {1562#(<= main_~b~0 1)} is VALID [2022-04-08 10:32:37,469 INFO L290 TraceCheckUtils]: 6: Hoare triple {1556#true} assume !!(~a~0 < 6);~b~0 := 0; {1562#(<= main_~b~0 1)} is VALID [2022-04-08 10:32:37,469 INFO L290 TraceCheckUtils]: 5: Hoare triple {1556#true} ~a~0 := 6;~b~0 := 6;~a~0 := 0; {1556#true} is VALID [2022-04-08 10:32:37,469 INFO L272 TraceCheckUtils]: 4: Hoare triple {1556#true} call #t~ret6 := main(); {1556#true} is VALID [2022-04-08 10:32:37,469 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {1556#true} {1556#true} #44#return; {1556#true} is VALID [2022-04-08 10:32:37,469 INFO L290 TraceCheckUtils]: 2: Hoare triple {1556#true} assume true; {1556#true} is VALID [2022-04-08 10:32:37,469 INFO L290 TraceCheckUtils]: 1: Hoare triple {1556#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(11, 2);call #Ultimate.allocInit(12, 3); {1556#true} is VALID [2022-04-08 10:32:37,469 INFO L272 TraceCheckUtils]: 0: Hoare triple {1556#true} call ULTIMATE.init(); {1556#true} is VALID [2022-04-08 10:32:37,469 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 43 proven. 16 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-04-08 10:32:37,470 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1416781843] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-08 10:32:37,470 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-08 10:32:37,470 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 10 [2022-04-08 10:32:37,470 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-08 10:32:37,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [755235244] [2022-04-08 10:32:37,470 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [755235244] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-08 10:32:37,470 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-08 10:32:37,470 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-04-08 10:32:37,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794462561] [2022-04-08 10:32:37,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-08 10:32:37,470 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 7 states have internal predecessors, (21), 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 31 [2022-04-08 10:32:37,471 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-08 10:32:37,471 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 8 states, 8 states have (on average 2.625) internal successors, (21), 7 states have internal predecessors, (21), 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) [2022-04-08 10:32:37,484 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 24 edges. 24 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 10:32:37,484 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-04-08 10:32:37,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-08 10:32:37,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-04-08 10:32:37,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2022-04-08 10:32:37,484 INFO L87 Difference]: Start difference. First operand 32 states and 34 transitions. Second operand has 8 states, 8 states have (on average 2.625) internal successors, (21), 7 states have internal predecessors, (21), 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) [2022-04-08 10:32:37,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 10:32:37,590 INFO L93 Difference]: Finished difference Result 54 states and 59 transitions. [2022-04-08 10:32:37,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-04-08 10:32:37,590 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 7 states have internal predecessors, (21), 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 31 [2022-04-08 10:32:37,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-08 10:32:37,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 8 states have (on average 2.625) internal successors, (21), 7 states have internal predecessors, (21), 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) [2022-04-08 10:32:37,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 33 transitions. [2022-04-08 10:32:37,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 8 states have (on average 2.625) internal successors, (21), 7 states have internal predecessors, (21), 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) [2022-04-08 10:32:37,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 33 transitions. [2022-04-08 10:32:37,592 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 8 states and 33 transitions. [2022-04-08 10:32:37,610 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 33 edges. 33 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 10:32:37,610 INFO L225 Difference]: With dead ends: 54 [2022-04-08 10:32:37,610 INFO L226 Difference]: Without dead ends: 38 [2022-04-08 10:32:37,611 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 61 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=126, Unknown=0, NotChecked=0, Total=210 [2022-04-08 10:32:37,611 INFO L913 BasicCegarLoop]: 12 mSDtfsCounter, 19 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-08 10:32:37,611 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 29 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-08 10:32:37,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2022-04-08 10:32:37,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 36. [2022-04-08 10:32:37,632 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-08 10:32:37,632 INFO L82 GeneralOperation]: Start isEquivalent. First operand 38 states. Second operand has 36 states, 32 states have (on average 1.09375) internal successors, (35), 32 states have internal predecessors, (35), 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) [2022-04-08 10:32:37,632 INFO L74 IsIncluded]: Start isIncluded. First operand 38 states. Second operand has 36 states, 32 states have (on average 1.09375) internal successors, (35), 32 states have internal predecessors, (35), 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) [2022-04-08 10:32:37,633 INFO L87 Difference]: Start difference. First operand 38 states. Second operand has 36 states, 32 states have (on average 1.09375) internal successors, (35), 32 states have internal predecessors, (35), 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) [2022-04-08 10:32:37,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 10:32:37,633 INFO L93 Difference]: Finished difference Result 38 states and 40 transitions. [2022-04-08 10:32:37,633 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 40 transitions. [2022-04-08 10:32:37,634 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 10:32:37,634 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 10:32:37,634 INFO L74 IsIncluded]: Start isIncluded. First operand has 36 states, 32 states have (on average 1.09375) internal successors, (35), 32 states have internal predecessors, (35), 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) Second operand 38 states. [2022-04-08 10:32:37,634 INFO L87 Difference]: Start difference. First operand has 36 states, 32 states have (on average 1.09375) internal successors, (35), 32 states have internal predecessors, (35), 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) Second operand 38 states. [2022-04-08 10:32:37,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 10:32:37,635 INFO L93 Difference]: Finished difference Result 38 states and 40 transitions. [2022-04-08 10:32:37,635 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 40 transitions. [2022-04-08 10:32:37,635 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 10:32:37,635 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 10:32:37,635 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-08 10:32:37,635 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-08 10:32:37,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 32 states have (on average 1.09375) internal successors, (35), 32 states have internal predecessors, (35), 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) [2022-04-08 10:32:37,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 38 transitions. [2022-04-08 10:32:37,636 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 38 transitions. Word has length 31 [2022-04-08 10:32:37,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-08 10:32:37,636 INFO L478 AbstractCegarLoop]: Abstraction has 36 states and 38 transitions. [2022-04-08 10:32:37,636 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 7 states have internal predecessors, (21), 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) [2022-04-08 10:32:37,636 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 36 states and 38 transitions. [2022-04-08 10:32:37,673 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 38 edges. 38 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 10:32:37,673 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 38 transitions. [2022-04-08 10:32:37,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-04-08 10:32:37,674 INFO L491 BasicCegarLoop]: Found error trace [2022-04-08 10:32:37,674 INFO L499 BasicCegarLoop]: trace histogram [10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-08 10:32:37,705 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-04-08 10:32:37,874 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-08 10:32:37,875 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-08 10:32:37,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-08 10:32:37,875 INFO L85 PathProgramCache]: Analyzing trace with hash 96599219, now seen corresponding path program 11 times [2022-04-08 10:32:37,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-08 10:32:37,875 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [257122804] [2022-04-08 10:32:37,939 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Cannot deal with arrays. [2022-04-08 10:32:37,959 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Cannot deal with arrays. [2022-04-08 10:32:37,960 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-08 10:32:37,960 INFO L85 PathProgramCache]: Analyzing trace with hash 96599219, now seen corresponding path program 12 times [2022-04-08 10:32:37,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-08 10:32:37,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993271341] [2022-04-08 10:32:37,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-08 10:32:37,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-08 10:32:37,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 10:32:38,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-08 10:32:38,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 10:32:38,050 INFO L290 TraceCheckUtils]: 0: Hoare triple {2031#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(11, 2);call #Ultimate.allocInit(12, 3); {2020#true} is VALID [2022-04-08 10:32:38,051 INFO L290 TraceCheckUtils]: 1: Hoare triple {2020#true} assume true; {2020#true} is VALID [2022-04-08 10:32:38,051 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {2020#true} {2020#true} #44#return; {2020#true} is VALID [2022-04-08 10:32:38,053 INFO L272 TraceCheckUtils]: 0: Hoare triple {2020#true} call ULTIMATE.init(); {2031#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-08 10:32:38,054 INFO L290 TraceCheckUtils]: 1: Hoare triple {2031#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(11, 2);call #Ultimate.allocInit(12, 3); {2020#true} is VALID [2022-04-08 10:32:38,054 INFO L290 TraceCheckUtils]: 2: Hoare triple {2020#true} assume true; {2020#true} is VALID [2022-04-08 10:32:38,054 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {2020#true} {2020#true} #44#return; {2020#true} is VALID [2022-04-08 10:32:38,054 INFO L272 TraceCheckUtils]: 4: Hoare triple {2020#true} call #t~ret6 := main(); {2020#true} is VALID [2022-04-08 10:32:38,054 INFO L290 TraceCheckUtils]: 5: Hoare triple {2020#true} ~a~0 := 6;~b~0 := 6;~a~0 := 0; {2020#true} is VALID [2022-04-08 10:32:38,056 INFO L290 TraceCheckUtils]: 6: Hoare triple {2020#true} assume !!(~a~0 < 6);~b~0 := 0; {2025#(= main_~b~0 0)} is VALID [2022-04-08 10:32:38,057 INFO L290 TraceCheckUtils]: 7: Hoare triple {2025#(= main_~b~0 0)} assume !!(~b~0 < 6); {2025#(= main_~b~0 0)} is VALID [2022-04-08 10:32:38,057 INFO L290 TraceCheckUtils]: 8: Hoare triple {2025#(= main_~b~0 0)} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {2026#(<= main_~b~0 1)} is VALID [2022-04-08 10:32:38,057 INFO L290 TraceCheckUtils]: 9: Hoare triple {2026#(<= main_~b~0 1)} assume !!(~b~0 < 6); {2026#(<= main_~b~0 1)} is VALID [2022-04-08 10:32:38,058 INFO L290 TraceCheckUtils]: 10: Hoare triple {2026#(<= main_~b~0 1)} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {2027#(<= main_~b~0 2)} is VALID [2022-04-08 10:32:38,058 INFO L290 TraceCheckUtils]: 11: Hoare triple {2027#(<= main_~b~0 2)} assume !!(~b~0 < 6); {2027#(<= main_~b~0 2)} is VALID [2022-04-08 10:32:38,058 INFO L290 TraceCheckUtils]: 12: Hoare triple {2027#(<= main_~b~0 2)} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {2028#(<= main_~b~0 3)} is VALID [2022-04-08 10:32:38,058 INFO L290 TraceCheckUtils]: 13: Hoare triple {2028#(<= main_~b~0 3)} assume !!(~b~0 < 6); {2028#(<= main_~b~0 3)} is VALID [2022-04-08 10:32:38,059 INFO L290 TraceCheckUtils]: 14: Hoare triple {2028#(<= main_~b~0 3)} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {2029#(<= main_~b~0 4)} is VALID [2022-04-08 10:32:38,059 INFO L290 TraceCheckUtils]: 15: Hoare triple {2029#(<= main_~b~0 4)} assume !!(~b~0 < 6); {2029#(<= main_~b~0 4)} is VALID [2022-04-08 10:32:38,059 INFO L290 TraceCheckUtils]: 16: Hoare triple {2029#(<= main_~b~0 4)} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {2030#(<= main_~b~0 5)} is VALID [2022-04-08 10:32:38,060 INFO L290 TraceCheckUtils]: 17: Hoare triple {2030#(<= main_~b~0 5)} assume !(~b~0 < 6); {2021#false} is VALID [2022-04-08 10:32:38,060 INFO L290 TraceCheckUtils]: 18: Hoare triple {2021#false} #t~pre4 := 1 + ~a~0;~a~0 := 1 + ~a~0;havoc #t~pre4; {2021#false} is VALID [2022-04-08 10:32:38,060 INFO L290 TraceCheckUtils]: 19: Hoare triple {2021#false} assume !!(~a~0 < 6);~b~0 := 0; {2021#false} is VALID [2022-04-08 10:32:38,060 INFO L290 TraceCheckUtils]: 20: Hoare triple {2021#false} assume !!(~b~0 < 6); {2021#false} is VALID [2022-04-08 10:32:38,060 INFO L290 TraceCheckUtils]: 21: Hoare triple {2021#false} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {2021#false} is VALID [2022-04-08 10:32:38,060 INFO L290 TraceCheckUtils]: 22: Hoare triple {2021#false} assume !!(~b~0 < 6); {2021#false} is VALID [2022-04-08 10:32:38,060 INFO L290 TraceCheckUtils]: 23: Hoare triple {2021#false} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {2021#false} is VALID [2022-04-08 10:32:38,060 INFO L290 TraceCheckUtils]: 24: Hoare triple {2021#false} assume !!(~b~0 < 6); {2021#false} is VALID [2022-04-08 10:32:38,060 INFO L290 TraceCheckUtils]: 25: Hoare triple {2021#false} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {2021#false} is VALID [2022-04-08 10:32:38,060 INFO L290 TraceCheckUtils]: 26: Hoare triple {2021#false} assume !!(~b~0 < 6); {2021#false} is VALID [2022-04-08 10:32:38,060 INFO L290 TraceCheckUtils]: 27: Hoare triple {2021#false} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {2021#false} is VALID [2022-04-08 10:32:38,060 INFO L290 TraceCheckUtils]: 28: Hoare triple {2021#false} assume !!(~b~0 < 6); {2021#false} is VALID [2022-04-08 10:32:38,061 INFO L290 TraceCheckUtils]: 29: Hoare triple {2021#false} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {2021#false} is VALID [2022-04-08 10:32:38,061 INFO L290 TraceCheckUtils]: 30: Hoare triple {2021#false} assume !(~b~0 < 6); {2021#false} is VALID [2022-04-08 10:32:38,061 INFO L290 TraceCheckUtils]: 31: Hoare triple {2021#false} #t~pre4 := 1 + ~a~0;~a~0 := 1 + ~a~0;havoc #t~pre4; {2021#false} is VALID [2022-04-08 10:32:38,061 INFO L290 TraceCheckUtils]: 32: Hoare triple {2021#false} assume !(~a~0 < 6); {2021#false} is VALID [2022-04-08 10:32:38,061 INFO L290 TraceCheckUtils]: 33: Hoare triple {2021#false} assume !(6 == ~a~0 && 6 == ~b~0); {2021#false} is VALID [2022-04-08 10:32:38,061 INFO L290 TraceCheckUtils]: 34: Hoare triple {2021#false} assume !false; {2021#false} is VALID [2022-04-08 10:32:38,062 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 63 proven. 25 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-04-08 10:32:38,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-08 10:32:38,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993271341] [2022-04-08 10:32:38,062 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993271341] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-08 10:32:38,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [638386349] [2022-04-08 10:32:38,062 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-04-08 10:32:38,062 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-08 10:32:38,062 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-08 10:32:38,072 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-08 10:32:38,100 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-04-08 10:32:38,130 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-04-08 10:32:38,130 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-08 10:32:38,131 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 4 conjunts are in the unsatisfiable core [2022-04-08 10:32:38,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 10:32:38,138 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-08 10:32:38,280 INFO L272 TraceCheckUtils]: 0: Hoare triple {2020#true} call ULTIMATE.init(); {2020#true} is VALID [2022-04-08 10:32:38,280 INFO L290 TraceCheckUtils]: 1: Hoare triple {2020#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(11, 2);call #Ultimate.allocInit(12, 3); {2020#true} is VALID [2022-04-08 10:32:38,280 INFO L290 TraceCheckUtils]: 2: Hoare triple {2020#true} assume true; {2020#true} is VALID [2022-04-08 10:32:38,281 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {2020#true} {2020#true} #44#return; {2020#true} is VALID [2022-04-08 10:32:38,281 INFO L272 TraceCheckUtils]: 4: Hoare triple {2020#true} call #t~ret6 := main(); {2020#true} is VALID [2022-04-08 10:32:38,281 INFO L290 TraceCheckUtils]: 5: Hoare triple {2020#true} ~a~0 := 6;~b~0 := 6;~a~0 := 0; {2050#(<= main_~a~0 0)} is VALID [2022-04-08 10:32:38,281 INFO L290 TraceCheckUtils]: 6: Hoare triple {2050#(<= main_~a~0 0)} assume !!(~a~0 < 6);~b~0 := 0; {2050#(<= main_~a~0 0)} is VALID [2022-04-08 10:32:38,282 INFO L290 TraceCheckUtils]: 7: Hoare triple {2050#(<= main_~a~0 0)} assume !!(~b~0 < 6); {2050#(<= main_~a~0 0)} is VALID [2022-04-08 10:32:38,282 INFO L290 TraceCheckUtils]: 8: Hoare triple {2050#(<= main_~a~0 0)} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {2050#(<= main_~a~0 0)} is VALID [2022-04-08 10:32:38,282 INFO L290 TraceCheckUtils]: 9: Hoare triple {2050#(<= main_~a~0 0)} assume !!(~b~0 < 6); {2050#(<= main_~a~0 0)} is VALID [2022-04-08 10:32:38,283 INFO L290 TraceCheckUtils]: 10: Hoare triple {2050#(<= main_~a~0 0)} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {2050#(<= main_~a~0 0)} is VALID [2022-04-08 10:32:38,283 INFO L290 TraceCheckUtils]: 11: Hoare triple {2050#(<= main_~a~0 0)} assume !!(~b~0 < 6); {2050#(<= main_~a~0 0)} is VALID [2022-04-08 10:32:38,283 INFO L290 TraceCheckUtils]: 12: Hoare triple {2050#(<= main_~a~0 0)} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {2050#(<= main_~a~0 0)} is VALID [2022-04-08 10:32:38,283 INFO L290 TraceCheckUtils]: 13: Hoare triple {2050#(<= main_~a~0 0)} assume !!(~b~0 < 6); {2050#(<= main_~a~0 0)} is VALID [2022-04-08 10:32:38,284 INFO L290 TraceCheckUtils]: 14: Hoare triple {2050#(<= main_~a~0 0)} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {2050#(<= main_~a~0 0)} is VALID [2022-04-08 10:32:38,284 INFO L290 TraceCheckUtils]: 15: Hoare triple {2050#(<= main_~a~0 0)} assume !!(~b~0 < 6); {2050#(<= main_~a~0 0)} is VALID [2022-04-08 10:32:38,284 INFO L290 TraceCheckUtils]: 16: Hoare triple {2050#(<= main_~a~0 0)} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {2050#(<= main_~a~0 0)} is VALID [2022-04-08 10:32:38,285 INFO L290 TraceCheckUtils]: 17: Hoare triple {2050#(<= main_~a~0 0)} assume !(~b~0 < 6); {2050#(<= main_~a~0 0)} is VALID [2022-04-08 10:32:38,285 INFO L290 TraceCheckUtils]: 18: Hoare triple {2050#(<= main_~a~0 0)} #t~pre4 := 1 + ~a~0;~a~0 := 1 + ~a~0;havoc #t~pre4; {2090#(<= main_~a~0 1)} is VALID [2022-04-08 10:32:38,286 INFO L290 TraceCheckUtils]: 19: Hoare triple {2090#(<= main_~a~0 1)} assume !!(~a~0 < 6);~b~0 := 0; {2090#(<= main_~a~0 1)} is VALID [2022-04-08 10:32:38,286 INFO L290 TraceCheckUtils]: 20: Hoare triple {2090#(<= main_~a~0 1)} assume !!(~b~0 < 6); {2090#(<= main_~a~0 1)} is VALID [2022-04-08 10:32:38,286 INFO L290 TraceCheckUtils]: 21: Hoare triple {2090#(<= main_~a~0 1)} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {2090#(<= main_~a~0 1)} is VALID [2022-04-08 10:32:38,286 INFO L290 TraceCheckUtils]: 22: Hoare triple {2090#(<= main_~a~0 1)} assume !!(~b~0 < 6); {2090#(<= main_~a~0 1)} is VALID [2022-04-08 10:32:38,287 INFO L290 TraceCheckUtils]: 23: Hoare triple {2090#(<= main_~a~0 1)} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {2090#(<= main_~a~0 1)} is VALID [2022-04-08 10:32:38,287 INFO L290 TraceCheckUtils]: 24: Hoare triple {2090#(<= main_~a~0 1)} assume !!(~b~0 < 6); {2090#(<= main_~a~0 1)} is VALID [2022-04-08 10:32:38,287 INFO L290 TraceCheckUtils]: 25: Hoare triple {2090#(<= main_~a~0 1)} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {2090#(<= main_~a~0 1)} is VALID [2022-04-08 10:32:38,288 INFO L290 TraceCheckUtils]: 26: Hoare triple {2090#(<= main_~a~0 1)} assume !!(~b~0 < 6); {2090#(<= main_~a~0 1)} is VALID [2022-04-08 10:32:38,288 INFO L290 TraceCheckUtils]: 27: Hoare triple {2090#(<= main_~a~0 1)} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {2090#(<= main_~a~0 1)} is VALID [2022-04-08 10:32:38,288 INFO L290 TraceCheckUtils]: 28: Hoare triple {2090#(<= main_~a~0 1)} assume !!(~b~0 < 6); {2090#(<= main_~a~0 1)} is VALID [2022-04-08 10:32:38,289 INFO L290 TraceCheckUtils]: 29: Hoare triple {2090#(<= main_~a~0 1)} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {2090#(<= main_~a~0 1)} is VALID [2022-04-08 10:32:38,289 INFO L290 TraceCheckUtils]: 30: Hoare triple {2090#(<= main_~a~0 1)} assume !(~b~0 < 6); {2090#(<= main_~a~0 1)} is VALID [2022-04-08 10:32:38,289 INFO L290 TraceCheckUtils]: 31: Hoare triple {2090#(<= main_~a~0 1)} #t~pre4 := 1 + ~a~0;~a~0 := 1 + ~a~0;havoc #t~pre4; {2130#(<= main_~a~0 2)} is VALID [2022-04-08 10:32:38,290 INFO L290 TraceCheckUtils]: 32: Hoare triple {2130#(<= main_~a~0 2)} assume !(~a~0 < 6); {2021#false} is VALID [2022-04-08 10:32:38,290 INFO L290 TraceCheckUtils]: 33: Hoare triple {2021#false} assume !(6 == ~a~0 && 6 == ~b~0); {2021#false} is VALID [2022-04-08 10:32:38,290 INFO L290 TraceCheckUtils]: 34: Hoare triple {2021#false} assume !false; {2021#false} is VALID [2022-04-08 10:32:38,290 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 0 proven. 65 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2022-04-08 10:32:38,290 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-08 10:32:38,450 INFO L290 TraceCheckUtils]: 34: Hoare triple {2021#false} assume !false; {2021#false} is VALID [2022-04-08 10:32:38,451 INFO L290 TraceCheckUtils]: 33: Hoare triple {2021#false} assume !(6 == ~a~0 && 6 == ~b~0); {2021#false} is VALID [2022-04-08 10:32:38,451 INFO L290 TraceCheckUtils]: 32: Hoare triple {2146#(< main_~a~0 6)} assume !(~a~0 < 6); {2021#false} is VALID [2022-04-08 10:32:38,451 INFO L290 TraceCheckUtils]: 31: Hoare triple {2150#(< main_~a~0 5)} #t~pre4 := 1 + ~a~0;~a~0 := 1 + ~a~0;havoc #t~pre4; {2146#(< main_~a~0 6)} is VALID [2022-04-08 10:32:38,452 INFO L290 TraceCheckUtils]: 30: Hoare triple {2150#(< main_~a~0 5)} assume !(~b~0 < 6); {2150#(< main_~a~0 5)} is VALID [2022-04-08 10:32:38,452 INFO L290 TraceCheckUtils]: 29: Hoare triple {2150#(< main_~a~0 5)} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {2150#(< main_~a~0 5)} is VALID [2022-04-08 10:32:38,452 INFO L290 TraceCheckUtils]: 28: Hoare triple {2150#(< main_~a~0 5)} assume !!(~b~0 < 6); {2150#(< main_~a~0 5)} is VALID [2022-04-08 10:32:38,453 INFO L290 TraceCheckUtils]: 27: Hoare triple {2150#(< main_~a~0 5)} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {2150#(< main_~a~0 5)} is VALID [2022-04-08 10:32:38,453 INFO L290 TraceCheckUtils]: 26: Hoare triple {2150#(< main_~a~0 5)} assume !!(~b~0 < 6); {2150#(< main_~a~0 5)} is VALID [2022-04-08 10:32:38,453 INFO L290 TraceCheckUtils]: 25: Hoare triple {2150#(< main_~a~0 5)} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {2150#(< main_~a~0 5)} is VALID [2022-04-08 10:32:38,454 INFO L290 TraceCheckUtils]: 24: Hoare triple {2150#(< main_~a~0 5)} assume !!(~b~0 < 6); {2150#(< main_~a~0 5)} is VALID [2022-04-08 10:32:38,454 INFO L290 TraceCheckUtils]: 23: Hoare triple {2150#(< main_~a~0 5)} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {2150#(< main_~a~0 5)} is VALID [2022-04-08 10:32:38,454 INFO L290 TraceCheckUtils]: 22: Hoare triple {2150#(< main_~a~0 5)} assume !!(~b~0 < 6); {2150#(< main_~a~0 5)} is VALID [2022-04-08 10:32:38,454 INFO L290 TraceCheckUtils]: 21: Hoare triple {2150#(< main_~a~0 5)} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {2150#(< main_~a~0 5)} is VALID [2022-04-08 10:32:38,455 INFO L290 TraceCheckUtils]: 20: Hoare triple {2150#(< main_~a~0 5)} assume !!(~b~0 < 6); {2150#(< main_~a~0 5)} is VALID [2022-04-08 10:32:38,455 INFO L290 TraceCheckUtils]: 19: Hoare triple {2150#(< main_~a~0 5)} assume !!(~a~0 < 6);~b~0 := 0; {2150#(< main_~a~0 5)} is VALID [2022-04-08 10:32:38,455 INFO L290 TraceCheckUtils]: 18: Hoare triple {2190#(< main_~a~0 4)} #t~pre4 := 1 + ~a~0;~a~0 := 1 + ~a~0;havoc #t~pre4; {2150#(< main_~a~0 5)} is VALID [2022-04-08 10:32:38,456 INFO L290 TraceCheckUtils]: 17: Hoare triple {2190#(< main_~a~0 4)} assume !(~b~0 < 6); {2190#(< main_~a~0 4)} is VALID [2022-04-08 10:32:38,456 INFO L290 TraceCheckUtils]: 16: Hoare triple {2190#(< main_~a~0 4)} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {2190#(< main_~a~0 4)} is VALID [2022-04-08 10:32:38,456 INFO L290 TraceCheckUtils]: 15: Hoare triple {2190#(< main_~a~0 4)} assume !!(~b~0 < 6); {2190#(< main_~a~0 4)} is VALID [2022-04-08 10:32:38,457 INFO L290 TraceCheckUtils]: 14: Hoare triple {2190#(< main_~a~0 4)} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {2190#(< main_~a~0 4)} is VALID [2022-04-08 10:32:38,457 INFO L290 TraceCheckUtils]: 13: Hoare triple {2190#(< main_~a~0 4)} assume !!(~b~0 < 6); {2190#(< main_~a~0 4)} is VALID [2022-04-08 10:32:38,457 INFO L290 TraceCheckUtils]: 12: Hoare triple {2190#(< main_~a~0 4)} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {2190#(< main_~a~0 4)} is VALID [2022-04-08 10:32:38,458 INFO L290 TraceCheckUtils]: 11: Hoare triple {2190#(< main_~a~0 4)} assume !!(~b~0 < 6); {2190#(< main_~a~0 4)} is VALID [2022-04-08 10:32:38,458 INFO L290 TraceCheckUtils]: 10: Hoare triple {2190#(< main_~a~0 4)} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {2190#(< main_~a~0 4)} is VALID [2022-04-08 10:32:38,458 INFO L290 TraceCheckUtils]: 9: Hoare triple {2190#(< main_~a~0 4)} assume !!(~b~0 < 6); {2190#(< main_~a~0 4)} is VALID [2022-04-08 10:32:38,458 INFO L290 TraceCheckUtils]: 8: Hoare triple {2190#(< main_~a~0 4)} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {2190#(< main_~a~0 4)} is VALID [2022-04-08 10:32:38,459 INFO L290 TraceCheckUtils]: 7: Hoare triple {2190#(< main_~a~0 4)} assume !!(~b~0 < 6); {2190#(< main_~a~0 4)} is VALID [2022-04-08 10:32:38,459 INFO L290 TraceCheckUtils]: 6: Hoare triple {2190#(< main_~a~0 4)} assume !!(~a~0 < 6);~b~0 := 0; {2190#(< main_~a~0 4)} is VALID [2022-04-08 10:32:38,459 INFO L290 TraceCheckUtils]: 5: Hoare triple {2020#true} ~a~0 := 6;~b~0 := 6;~a~0 := 0; {2190#(< main_~a~0 4)} is VALID [2022-04-08 10:32:38,460 INFO L272 TraceCheckUtils]: 4: Hoare triple {2020#true} call #t~ret6 := main(); {2020#true} is VALID [2022-04-08 10:32:38,460 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {2020#true} {2020#true} #44#return; {2020#true} is VALID [2022-04-08 10:32:38,460 INFO L290 TraceCheckUtils]: 2: Hoare triple {2020#true} assume true; {2020#true} is VALID [2022-04-08 10:32:38,460 INFO L290 TraceCheckUtils]: 1: Hoare triple {2020#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(11, 2);call #Ultimate.allocInit(12, 3); {2020#true} is VALID [2022-04-08 10:32:38,460 INFO L272 TraceCheckUtils]: 0: Hoare triple {2020#true} call ULTIMATE.init(); {2020#true} is VALID [2022-04-08 10:32:38,460 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 0 proven. 65 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2022-04-08 10:32:38,460 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [638386349] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-08 10:32:38,460 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-08 10:32:38,460 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 5] total 15 [2022-04-08 10:32:38,460 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-08 10:32:38,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [257122804] [2022-04-08 10:32:38,461 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [257122804] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-08 10:32:38,461 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-08 10:32:38,461 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-04-08 10:32:38,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336287089] [2022-04-08 10:32:38,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-08 10:32:38,461 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 8 states have internal predecessors, (23), 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 35 [2022-04-08 10:32:38,461 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-08 10:32:38,461 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 8 states have internal predecessors, (23), 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) [2022-04-08 10:32:38,478 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 26 edges. 26 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 10:32:38,478 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-04-08 10:32:38,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-08 10:32:38,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-04-08 10:32:38,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2022-04-08 10:32:38,479 INFO L87 Difference]: Start difference. First operand 36 states and 38 transitions. Second operand has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 8 states have internal predecessors, (23), 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) [2022-04-08 10:32:38,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 10:32:38,645 INFO L93 Difference]: Finished difference Result 58 states and 63 transitions. [2022-04-08 10:32:38,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-04-08 10:32:38,645 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 8 states have internal predecessors, (23), 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 35 [2022-04-08 10:32:38,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-08 10:32:38,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 8 states have internal predecessors, (23), 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) [2022-04-08 10:32:38,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 34 transitions. [2022-04-08 10:32:38,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 8 states have internal predecessors, (23), 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) [2022-04-08 10:32:38,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 34 transitions. [2022-04-08 10:32:38,647 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 9 states and 34 transitions. [2022-04-08 10:32:38,672 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 34 edges. 34 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 10:32:38,673 INFO L225 Difference]: With dead ends: 58 [2022-04-08 10:32:38,673 INFO L226 Difference]: Without dead ends: 40 [2022-04-08 10:32:38,673 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=111, Invalid=309, Unknown=0, NotChecked=0, Total=420 [2022-04-08 10:32:38,673 INFO L913 BasicCegarLoop]: 12 mSDtfsCounter, 20 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-08 10:32:38,674 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 29 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-08 10:32:38,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2022-04-08 10:32:38,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2022-04-08 10:32:38,703 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-08 10:32:38,703 INFO L82 GeneralOperation]: Start isEquivalent. First operand 40 states. Second operand has 40 states, 36 states have (on average 1.0833333333333333) internal successors, (39), 36 states have internal predecessors, (39), 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) [2022-04-08 10:32:38,703 INFO L74 IsIncluded]: Start isIncluded. First operand 40 states. Second operand has 40 states, 36 states have (on average 1.0833333333333333) internal successors, (39), 36 states have internal predecessors, (39), 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) [2022-04-08 10:32:38,703 INFO L87 Difference]: Start difference. First operand 40 states. Second operand has 40 states, 36 states have (on average 1.0833333333333333) internal successors, (39), 36 states have internal predecessors, (39), 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) [2022-04-08 10:32:38,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 10:32:38,704 INFO L93 Difference]: Finished difference Result 40 states and 42 transitions. [2022-04-08 10:32:38,704 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 42 transitions. [2022-04-08 10:32:38,705 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 10:32:38,705 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 10:32:38,705 INFO L74 IsIncluded]: Start isIncluded. First operand has 40 states, 36 states have (on average 1.0833333333333333) internal successors, (39), 36 states have internal predecessors, (39), 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) Second operand 40 states. [2022-04-08 10:32:38,705 INFO L87 Difference]: Start difference. First operand has 40 states, 36 states have (on average 1.0833333333333333) internal successors, (39), 36 states have internal predecessors, (39), 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) Second operand 40 states. [2022-04-08 10:32:38,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 10:32:38,706 INFO L93 Difference]: Finished difference Result 40 states and 42 transitions. [2022-04-08 10:32:38,706 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 42 transitions. [2022-04-08 10:32:38,706 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 10:32:38,706 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 10:32:38,706 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-08 10:32:38,706 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-08 10:32:38,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 36 states have (on average 1.0833333333333333) internal successors, (39), 36 states have internal predecessors, (39), 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) [2022-04-08 10:32:38,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 42 transitions. [2022-04-08 10:32:38,707 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 42 transitions. Word has length 35 [2022-04-08 10:32:38,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-08 10:32:38,707 INFO L478 AbstractCegarLoop]: Abstraction has 40 states and 42 transitions. [2022-04-08 10:32:38,707 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 8 states have internal predecessors, (23), 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) [2022-04-08 10:32:38,707 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 40 states and 42 transitions. [2022-04-08 10:32:38,740 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 42 edges. 42 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 10:32:38,740 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 42 transitions. [2022-04-08 10:32:38,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-04-08 10:32:38,741 INFO L491 BasicCegarLoop]: Found error trace [2022-04-08 10:32:38,741 INFO L499 BasicCegarLoop]: trace histogram [12, 12, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-08 10:32:38,777 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-04-08 10:32:38,982 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-08 10:32:38,982 INFO L403 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-08 10:32:38,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-08 10:32:38,982 INFO L85 PathProgramCache]: Analyzing trace with hash 455642675, now seen corresponding path program 13 times [2022-04-08 10:32:38,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-08 10:32:38,982 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1050271381] [2022-04-08 10:32:39,050 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Cannot deal with arrays. [2022-04-08 10:32:39,080 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Cannot deal with arrays. [2022-04-08 10:32:39,080 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-08 10:32:39,080 INFO L85 PathProgramCache]: Analyzing trace with hash 455642675, now seen corresponding path program 14 times [2022-04-08 10:32:39,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-08 10:32:39,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436085110] [2022-04-08 10:32:39,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-08 10:32:39,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-08 10:32:39,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 10:32:39,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-08 10:32:39,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 10:32:39,123 INFO L290 TraceCheckUtils]: 0: Hoare triple {2543#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(11, 2);call #Ultimate.allocInit(12, 3); {2535#true} is VALID [2022-04-08 10:32:39,123 INFO L290 TraceCheckUtils]: 1: Hoare triple {2535#true} assume true; {2535#true} is VALID [2022-04-08 10:32:39,124 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {2535#true} {2535#true} #44#return; {2535#true} is VALID [2022-04-08 10:32:39,124 INFO L272 TraceCheckUtils]: 0: Hoare triple {2535#true} call ULTIMATE.init(); {2543#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-08 10:32:39,124 INFO L290 TraceCheckUtils]: 1: Hoare triple {2543#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(11, 2);call #Ultimate.allocInit(12, 3); {2535#true} is VALID [2022-04-08 10:32:39,124 INFO L290 TraceCheckUtils]: 2: Hoare triple {2535#true} assume true; {2535#true} is VALID [2022-04-08 10:32:39,124 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {2535#true} {2535#true} #44#return; {2535#true} is VALID [2022-04-08 10:32:39,124 INFO L272 TraceCheckUtils]: 4: Hoare triple {2535#true} call #t~ret6 := main(); {2535#true} is VALID [2022-04-08 10:32:39,125 INFO L290 TraceCheckUtils]: 5: Hoare triple {2535#true} ~a~0 := 6;~b~0 := 6;~a~0 := 0; {2540#(= main_~a~0 0)} is VALID [2022-04-08 10:32:39,125 INFO L290 TraceCheckUtils]: 6: Hoare triple {2540#(= main_~a~0 0)} assume !!(~a~0 < 6);~b~0 := 0; {2540#(= main_~a~0 0)} is VALID [2022-04-08 10:32:39,125 INFO L290 TraceCheckUtils]: 7: Hoare triple {2540#(= main_~a~0 0)} assume !!(~b~0 < 6); {2540#(= main_~a~0 0)} is VALID [2022-04-08 10:32:39,125 INFO L290 TraceCheckUtils]: 8: Hoare triple {2540#(= main_~a~0 0)} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {2540#(= main_~a~0 0)} is VALID [2022-04-08 10:32:39,126 INFO L290 TraceCheckUtils]: 9: Hoare triple {2540#(= main_~a~0 0)} assume !!(~b~0 < 6); {2540#(= main_~a~0 0)} is VALID [2022-04-08 10:32:39,126 INFO L290 TraceCheckUtils]: 10: Hoare triple {2540#(= main_~a~0 0)} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {2540#(= main_~a~0 0)} is VALID [2022-04-08 10:32:39,126 INFO L290 TraceCheckUtils]: 11: Hoare triple {2540#(= main_~a~0 0)} assume !!(~b~0 < 6); {2540#(= main_~a~0 0)} is VALID [2022-04-08 10:32:39,126 INFO L290 TraceCheckUtils]: 12: Hoare triple {2540#(= main_~a~0 0)} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {2540#(= main_~a~0 0)} is VALID [2022-04-08 10:32:39,127 INFO L290 TraceCheckUtils]: 13: Hoare triple {2540#(= main_~a~0 0)} assume !!(~b~0 < 6); {2540#(= main_~a~0 0)} is VALID [2022-04-08 10:32:39,127 INFO L290 TraceCheckUtils]: 14: Hoare triple {2540#(= main_~a~0 0)} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {2540#(= main_~a~0 0)} is VALID [2022-04-08 10:32:39,127 INFO L290 TraceCheckUtils]: 15: Hoare triple {2540#(= main_~a~0 0)} assume !!(~b~0 < 6); {2540#(= main_~a~0 0)} is VALID [2022-04-08 10:32:39,127 INFO L290 TraceCheckUtils]: 16: Hoare triple {2540#(= main_~a~0 0)} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {2540#(= main_~a~0 0)} is VALID [2022-04-08 10:32:39,128 INFO L290 TraceCheckUtils]: 17: Hoare triple {2540#(= main_~a~0 0)} assume !!(~b~0 < 6); {2540#(= main_~a~0 0)} is VALID [2022-04-08 10:32:39,128 INFO L290 TraceCheckUtils]: 18: Hoare triple {2540#(= main_~a~0 0)} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {2540#(= main_~a~0 0)} is VALID [2022-04-08 10:32:39,128 INFO L290 TraceCheckUtils]: 19: Hoare triple {2540#(= main_~a~0 0)} assume !(~b~0 < 6); {2540#(= main_~a~0 0)} is VALID [2022-04-08 10:32:39,128 INFO L290 TraceCheckUtils]: 20: Hoare triple {2540#(= main_~a~0 0)} #t~pre4 := 1 + ~a~0;~a~0 := 1 + ~a~0;havoc #t~pre4; {2541#(<= main_~a~0 1)} is VALID [2022-04-08 10:32:39,129 INFO L290 TraceCheckUtils]: 21: Hoare triple {2541#(<= main_~a~0 1)} assume !!(~a~0 < 6);~b~0 := 0; {2541#(<= main_~a~0 1)} is VALID [2022-04-08 10:32:39,129 INFO L290 TraceCheckUtils]: 22: Hoare triple {2541#(<= main_~a~0 1)} assume !!(~b~0 < 6); {2541#(<= main_~a~0 1)} is VALID [2022-04-08 10:32:39,129 INFO L290 TraceCheckUtils]: 23: Hoare triple {2541#(<= main_~a~0 1)} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {2541#(<= main_~a~0 1)} is VALID [2022-04-08 10:32:39,129 INFO L290 TraceCheckUtils]: 24: Hoare triple {2541#(<= main_~a~0 1)} assume !!(~b~0 < 6); {2541#(<= main_~a~0 1)} is VALID [2022-04-08 10:32:39,130 INFO L290 TraceCheckUtils]: 25: Hoare triple {2541#(<= main_~a~0 1)} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {2541#(<= main_~a~0 1)} is VALID [2022-04-08 10:32:39,130 INFO L290 TraceCheckUtils]: 26: Hoare triple {2541#(<= main_~a~0 1)} assume !!(~b~0 < 6); {2541#(<= main_~a~0 1)} is VALID [2022-04-08 10:32:39,130 INFO L290 TraceCheckUtils]: 27: Hoare triple {2541#(<= main_~a~0 1)} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {2541#(<= main_~a~0 1)} is VALID [2022-04-08 10:32:39,130 INFO L290 TraceCheckUtils]: 28: Hoare triple {2541#(<= main_~a~0 1)} assume !!(~b~0 < 6); {2541#(<= main_~a~0 1)} is VALID [2022-04-08 10:32:39,131 INFO L290 TraceCheckUtils]: 29: Hoare triple {2541#(<= main_~a~0 1)} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {2541#(<= main_~a~0 1)} is VALID [2022-04-08 10:32:39,131 INFO L290 TraceCheckUtils]: 30: Hoare triple {2541#(<= main_~a~0 1)} assume !!(~b~0 < 6); {2541#(<= main_~a~0 1)} is VALID [2022-04-08 10:32:39,131 INFO L290 TraceCheckUtils]: 31: Hoare triple {2541#(<= main_~a~0 1)} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {2541#(<= main_~a~0 1)} is VALID [2022-04-08 10:32:39,131 INFO L290 TraceCheckUtils]: 32: Hoare triple {2541#(<= main_~a~0 1)} assume !!(~b~0 < 6); {2541#(<= main_~a~0 1)} is VALID [2022-04-08 10:32:39,132 INFO L290 TraceCheckUtils]: 33: Hoare triple {2541#(<= main_~a~0 1)} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {2541#(<= main_~a~0 1)} is VALID [2022-04-08 10:32:39,132 INFO L290 TraceCheckUtils]: 34: Hoare triple {2541#(<= main_~a~0 1)} assume !(~b~0 < 6); {2541#(<= main_~a~0 1)} is VALID [2022-04-08 10:32:39,132 INFO L290 TraceCheckUtils]: 35: Hoare triple {2541#(<= main_~a~0 1)} #t~pre4 := 1 + ~a~0;~a~0 := 1 + ~a~0;havoc #t~pre4; {2542#(<= main_~a~0 2)} is VALID [2022-04-08 10:32:39,133 INFO L290 TraceCheckUtils]: 36: Hoare triple {2542#(<= main_~a~0 2)} assume !(~a~0 < 6); {2536#false} is VALID [2022-04-08 10:32:39,133 INFO L290 TraceCheckUtils]: 37: Hoare triple {2536#false} assume !(6 == ~a~0 && 6 == ~b~0); {2536#false} is VALID [2022-04-08 10:32:39,133 INFO L290 TraceCheckUtils]: 38: Hoare triple {2536#false} assume !false; {2536#false} is VALID [2022-04-08 10:32:39,133 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 0 proven. 89 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-04-08 10:32:39,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-08 10:32:39,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436085110] [2022-04-08 10:32:39,133 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436085110] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-08 10:32:39,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1132076956] [2022-04-08 10:32:39,133 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-08 10:32:39,133 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-08 10:32:39,134 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-08 10:32:39,134 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-08 10:32:39,185 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-04-08 10:32:39,186 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-08 10:32:39,186 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-08 10:32:39,186 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 4 conjunts are in the unsatisfiable core [2022-04-08 10:32:39,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 10:32:39,193 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-08 10:32:39,326 INFO L272 TraceCheckUtils]: 0: Hoare triple {2535#true} call ULTIMATE.init(); {2535#true} is VALID [2022-04-08 10:32:39,326 INFO L290 TraceCheckUtils]: 1: Hoare triple {2535#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(11, 2);call #Ultimate.allocInit(12, 3); {2535#true} is VALID [2022-04-08 10:32:39,326 INFO L290 TraceCheckUtils]: 2: Hoare triple {2535#true} assume true; {2535#true} is VALID [2022-04-08 10:32:39,326 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {2535#true} {2535#true} #44#return; {2535#true} is VALID [2022-04-08 10:32:39,326 INFO L272 TraceCheckUtils]: 4: Hoare triple {2535#true} call #t~ret6 := main(); {2535#true} is VALID [2022-04-08 10:32:39,327 INFO L290 TraceCheckUtils]: 5: Hoare triple {2535#true} ~a~0 := 6;~b~0 := 6;~a~0 := 0; {2562#(<= main_~a~0 0)} is VALID [2022-04-08 10:32:39,327 INFO L290 TraceCheckUtils]: 6: Hoare triple {2562#(<= main_~a~0 0)} assume !!(~a~0 < 6);~b~0 := 0; {2562#(<= main_~a~0 0)} is VALID [2022-04-08 10:32:39,327 INFO L290 TraceCheckUtils]: 7: Hoare triple {2562#(<= main_~a~0 0)} assume !!(~b~0 < 6); {2562#(<= main_~a~0 0)} is VALID [2022-04-08 10:32:39,327 INFO L290 TraceCheckUtils]: 8: Hoare triple {2562#(<= main_~a~0 0)} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {2562#(<= main_~a~0 0)} is VALID [2022-04-08 10:32:39,328 INFO L290 TraceCheckUtils]: 9: Hoare triple {2562#(<= main_~a~0 0)} assume !!(~b~0 < 6); {2562#(<= main_~a~0 0)} is VALID [2022-04-08 10:32:39,328 INFO L290 TraceCheckUtils]: 10: Hoare triple {2562#(<= main_~a~0 0)} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {2562#(<= main_~a~0 0)} is VALID [2022-04-08 10:32:39,328 INFO L290 TraceCheckUtils]: 11: Hoare triple {2562#(<= main_~a~0 0)} assume !!(~b~0 < 6); {2562#(<= main_~a~0 0)} is VALID [2022-04-08 10:32:39,329 INFO L290 TraceCheckUtils]: 12: Hoare triple {2562#(<= main_~a~0 0)} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {2562#(<= main_~a~0 0)} is VALID [2022-04-08 10:32:39,329 INFO L290 TraceCheckUtils]: 13: Hoare triple {2562#(<= main_~a~0 0)} assume !!(~b~0 < 6); {2562#(<= main_~a~0 0)} is VALID [2022-04-08 10:32:39,329 INFO L290 TraceCheckUtils]: 14: Hoare triple {2562#(<= main_~a~0 0)} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {2562#(<= main_~a~0 0)} is VALID [2022-04-08 10:32:39,329 INFO L290 TraceCheckUtils]: 15: Hoare triple {2562#(<= main_~a~0 0)} assume !!(~b~0 < 6); {2562#(<= main_~a~0 0)} is VALID [2022-04-08 10:32:39,330 INFO L290 TraceCheckUtils]: 16: Hoare triple {2562#(<= main_~a~0 0)} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {2562#(<= main_~a~0 0)} is VALID [2022-04-08 10:32:39,330 INFO L290 TraceCheckUtils]: 17: Hoare triple {2562#(<= main_~a~0 0)} assume !!(~b~0 < 6); {2562#(<= main_~a~0 0)} is VALID [2022-04-08 10:32:39,330 INFO L290 TraceCheckUtils]: 18: Hoare triple {2562#(<= main_~a~0 0)} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {2562#(<= main_~a~0 0)} is VALID [2022-04-08 10:32:39,330 INFO L290 TraceCheckUtils]: 19: Hoare triple {2562#(<= main_~a~0 0)} assume !(~b~0 < 6); {2562#(<= main_~a~0 0)} is VALID [2022-04-08 10:32:39,331 INFO L290 TraceCheckUtils]: 20: Hoare triple {2562#(<= main_~a~0 0)} #t~pre4 := 1 + ~a~0;~a~0 := 1 + ~a~0;havoc #t~pre4; {2541#(<= main_~a~0 1)} is VALID [2022-04-08 10:32:39,331 INFO L290 TraceCheckUtils]: 21: Hoare triple {2541#(<= main_~a~0 1)} assume !!(~a~0 < 6);~b~0 := 0; {2541#(<= main_~a~0 1)} is VALID [2022-04-08 10:32:39,331 INFO L290 TraceCheckUtils]: 22: Hoare triple {2541#(<= main_~a~0 1)} assume !!(~b~0 < 6); {2541#(<= main_~a~0 1)} is VALID [2022-04-08 10:32:39,332 INFO L290 TraceCheckUtils]: 23: Hoare triple {2541#(<= main_~a~0 1)} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {2541#(<= main_~a~0 1)} is VALID [2022-04-08 10:32:39,332 INFO L290 TraceCheckUtils]: 24: Hoare triple {2541#(<= main_~a~0 1)} assume !!(~b~0 < 6); {2541#(<= main_~a~0 1)} is VALID [2022-04-08 10:32:39,332 INFO L290 TraceCheckUtils]: 25: Hoare triple {2541#(<= main_~a~0 1)} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {2541#(<= main_~a~0 1)} is VALID [2022-04-08 10:32:39,333 INFO L290 TraceCheckUtils]: 26: Hoare triple {2541#(<= main_~a~0 1)} assume !!(~b~0 < 6); {2541#(<= main_~a~0 1)} is VALID [2022-04-08 10:32:39,333 INFO L290 TraceCheckUtils]: 27: Hoare triple {2541#(<= main_~a~0 1)} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {2541#(<= main_~a~0 1)} is VALID [2022-04-08 10:32:39,333 INFO L290 TraceCheckUtils]: 28: Hoare triple {2541#(<= main_~a~0 1)} assume !!(~b~0 < 6); {2541#(<= main_~a~0 1)} is VALID [2022-04-08 10:32:39,333 INFO L290 TraceCheckUtils]: 29: Hoare triple {2541#(<= main_~a~0 1)} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {2541#(<= main_~a~0 1)} is VALID [2022-04-08 10:32:39,334 INFO L290 TraceCheckUtils]: 30: Hoare triple {2541#(<= main_~a~0 1)} assume !!(~b~0 < 6); {2541#(<= main_~a~0 1)} is VALID [2022-04-08 10:32:39,334 INFO L290 TraceCheckUtils]: 31: Hoare triple {2541#(<= main_~a~0 1)} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {2541#(<= main_~a~0 1)} is VALID [2022-04-08 10:32:39,334 INFO L290 TraceCheckUtils]: 32: Hoare triple {2541#(<= main_~a~0 1)} assume !!(~b~0 < 6); {2541#(<= main_~a~0 1)} is VALID [2022-04-08 10:32:39,335 INFO L290 TraceCheckUtils]: 33: Hoare triple {2541#(<= main_~a~0 1)} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {2541#(<= main_~a~0 1)} is VALID [2022-04-08 10:32:39,335 INFO L290 TraceCheckUtils]: 34: Hoare triple {2541#(<= main_~a~0 1)} assume !(~b~0 < 6); {2541#(<= main_~a~0 1)} is VALID [2022-04-08 10:32:39,335 INFO L290 TraceCheckUtils]: 35: Hoare triple {2541#(<= main_~a~0 1)} #t~pre4 := 1 + ~a~0;~a~0 := 1 + ~a~0;havoc #t~pre4; {2542#(<= main_~a~0 2)} is VALID [2022-04-08 10:32:39,336 INFO L290 TraceCheckUtils]: 36: Hoare triple {2542#(<= main_~a~0 2)} assume !(~a~0 < 6); {2536#false} is VALID [2022-04-08 10:32:39,336 INFO L290 TraceCheckUtils]: 37: Hoare triple {2536#false} assume !(6 == ~a~0 && 6 == ~b~0); {2536#false} is VALID [2022-04-08 10:32:39,336 INFO L290 TraceCheckUtils]: 38: Hoare triple {2536#false} assume !false; {2536#false} is VALID [2022-04-08 10:32:39,336 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 0 proven. 89 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-04-08 10:32:39,336 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-08 10:32:39,498 INFO L290 TraceCheckUtils]: 38: Hoare triple {2536#false} assume !false; {2536#false} is VALID [2022-04-08 10:32:39,498 INFO L290 TraceCheckUtils]: 37: Hoare triple {2536#false} assume !(6 == ~a~0 && 6 == ~b~0); {2536#false} is VALID [2022-04-08 10:32:39,499 INFO L290 TraceCheckUtils]: 36: Hoare triple {2668#(< main_~a~0 6)} assume !(~a~0 < 6); {2536#false} is VALID [2022-04-08 10:32:39,499 INFO L290 TraceCheckUtils]: 35: Hoare triple {2672#(< main_~a~0 5)} #t~pre4 := 1 + ~a~0;~a~0 := 1 + ~a~0;havoc #t~pre4; {2668#(< main_~a~0 6)} is VALID [2022-04-08 10:32:39,499 INFO L290 TraceCheckUtils]: 34: Hoare triple {2672#(< main_~a~0 5)} assume !(~b~0 < 6); {2672#(< main_~a~0 5)} is VALID [2022-04-08 10:32:39,500 INFO L290 TraceCheckUtils]: 33: Hoare triple {2672#(< main_~a~0 5)} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {2672#(< main_~a~0 5)} is VALID [2022-04-08 10:32:39,500 INFO L290 TraceCheckUtils]: 32: Hoare triple {2672#(< main_~a~0 5)} assume !!(~b~0 < 6); {2672#(< main_~a~0 5)} is VALID [2022-04-08 10:32:39,500 INFO L290 TraceCheckUtils]: 31: Hoare triple {2672#(< main_~a~0 5)} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {2672#(< main_~a~0 5)} is VALID [2022-04-08 10:32:39,501 INFO L290 TraceCheckUtils]: 30: Hoare triple {2672#(< main_~a~0 5)} assume !!(~b~0 < 6); {2672#(< main_~a~0 5)} is VALID [2022-04-08 10:32:39,501 INFO L290 TraceCheckUtils]: 29: Hoare triple {2672#(< main_~a~0 5)} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {2672#(< main_~a~0 5)} is VALID [2022-04-08 10:32:39,501 INFO L290 TraceCheckUtils]: 28: Hoare triple {2672#(< main_~a~0 5)} assume !!(~b~0 < 6); {2672#(< main_~a~0 5)} is VALID [2022-04-08 10:32:39,501 INFO L290 TraceCheckUtils]: 27: Hoare triple {2672#(< main_~a~0 5)} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {2672#(< main_~a~0 5)} is VALID [2022-04-08 10:32:39,502 INFO L290 TraceCheckUtils]: 26: Hoare triple {2672#(< main_~a~0 5)} assume !!(~b~0 < 6); {2672#(< main_~a~0 5)} is VALID [2022-04-08 10:32:39,502 INFO L290 TraceCheckUtils]: 25: Hoare triple {2672#(< main_~a~0 5)} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {2672#(< main_~a~0 5)} is VALID [2022-04-08 10:32:39,502 INFO L290 TraceCheckUtils]: 24: Hoare triple {2672#(< main_~a~0 5)} assume !!(~b~0 < 6); {2672#(< main_~a~0 5)} is VALID [2022-04-08 10:32:39,502 INFO L290 TraceCheckUtils]: 23: Hoare triple {2672#(< main_~a~0 5)} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {2672#(< main_~a~0 5)} is VALID [2022-04-08 10:32:39,503 INFO L290 TraceCheckUtils]: 22: Hoare triple {2672#(< main_~a~0 5)} assume !!(~b~0 < 6); {2672#(< main_~a~0 5)} is VALID [2022-04-08 10:32:39,503 INFO L290 TraceCheckUtils]: 21: Hoare triple {2672#(< main_~a~0 5)} assume !!(~a~0 < 6);~b~0 := 0; {2672#(< main_~a~0 5)} is VALID [2022-04-08 10:32:39,503 INFO L290 TraceCheckUtils]: 20: Hoare triple {2718#(< main_~a~0 4)} #t~pre4 := 1 + ~a~0;~a~0 := 1 + ~a~0;havoc #t~pre4; {2672#(< main_~a~0 5)} is VALID [2022-04-08 10:32:39,504 INFO L290 TraceCheckUtils]: 19: Hoare triple {2718#(< main_~a~0 4)} assume !(~b~0 < 6); {2718#(< main_~a~0 4)} is VALID [2022-04-08 10:32:39,504 INFO L290 TraceCheckUtils]: 18: Hoare triple {2718#(< main_~a~0 4)} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {2718#(< main_~a~0 4)} is VALID [2022-04-08 10:32:39,504 INFO L290 TraceCheckUtils]: 17: Hoare triple {2718#(< main_~a~0 4)} assume !!(~b~0 < 6); {2718#(< main_~a~0 4)} is VALID [2022-04-08 10:32:39,505 INFO L290 TraceCheckUtils]: 16: Hoare triple {2718#(< main_~a~0 4)} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {2718#(< main_~a~0 4)} is VALID [2022-04-08 10:32:39,505 INFO L290 TraceCheckUtils]: 15: Hoare triple {2718#(< main_~a~0 4)} assume !!(~b~0 < 6); {2718#(< main_~a~0 4)} is VALID [2022-04-08 10:32:39,505 INFO L290 TraceCheckUtils]: 14: Hoare triple {2718#(< main_~a~0 4)} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {2718#(< main_~a~0 4)} is VALID [2022-04-08 10:32:39,505 INFO L290 TraceCheckUtils]: 13: Hoare triple {2718#(< main_~a~0 4)} assume !!(~b~0 < 6); {2718#(< main_~a~0 4)} is VALID [2022-04-08 10:32:39,506 INFO L290 TraceCheckUtils]: 12: Hoare triple {2718#(< main_~a~0 4)} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {2718#(< main_~a~0 4)} is VALID [2022-04-08 10:32:39,506 INFO L290 TraceCheckUtils]: 11: Hoare triple {2718#(< main_~a~0 4)} assume !!(~b~0 < 6); {2718#(< main_~a~0 4)} is VALID [2022-04-08 10:32:39,506 INFO L290 TraceCheckUtils]: 10: Hoare triple {2718#(< main_~a~0 4)} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {2718#(< main_~a~0 4)} is VALID [2022-04-08 10:32:39,507 INFO L290 TraceCheckUtils]: 9: Hoare triple {2718#(< main_~a~0 4)} assume !!(~b~0 < 6); {2718#(< main_~a~0 4)} is VALID [2022-04-08 10:32:39,507 INFO L290 TraceCheckUtils]: 8: Hoare triple {2718#(< main_~a~0 4)} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {2718#(< main_~a~0 4)} is VALID [2022-04-08 10:32:39,507 INFO L290 TraceCheckUtils]: 7: Hoare triple {2718#(< main_~a~0 4)} assume !!(~b~0 < 6); {2718#(< main_~a~0 4)} is VALID [2022-04-08 10:32:39,507 INFO L290 TraceCheckUtils]: 6: Hoare triple {2718#(< main_~a~0 4)} assume !!(~a~0 < 6);~b~0 := 0; {2718#(< main_~a~0 4)} is VALID [2022-04-08 10:32:39,508 INFO L290 TraceCheckUtils]: 5: Hoare triple {2535#true} ~a~0 := 6;~b~0 := 6;~a~0 := 0; {2718#(< main_~a~0 4)} is VALID [2022-04-08 10:32:39,508 INFO L272 TraceCheckUtils]: 4: Hoare triple {2535#true} call #t~ret6 := main(); {2535#true} is VALID [2022-04-08 10:32:39,508 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {2535#true} {2535#true} #44#return; {2535#true} is VALID [2022-04-08 10:32:39,508 INFO L290 TraceCheckUtils]: 2: Hoare triple {2535#true} assume true; {2535#true} is VALID [2022-04-08 10:32:39,508 INFO L290 TraceCheckUtils]: 1: Hoare triple {2535#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(11, 2);call #Ultimate.allocInit(12, 3); {2535#true} is VALID [2022-04-08 10:32:39,508 INFO L272 TraceCheckUtils]: 0: Hoare triple {2535#true} call ULTIMATE.init(); {2535#true} is VALID [2022-04-08 10:32:39,508 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 0 proven. 89 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-04-08 10:32:39,508 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1132076956] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-08 10:32:39,508 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-08 10:32:39,509 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 10 [2022-04-08 10:32:39,509 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-08 10:32:39,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1050271381] [2022-04-08 10:32:39,509 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1050271381] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-08 10:32:39,509 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-08 10:32:39,509 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-08 10:32:39,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209581036] [2022-04-08 10:32:39,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-08 10:32:39,510 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 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 39 [2022-04-08 10:32:39,510 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-08 10:32:39,510 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 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) [2022-04-08 10:32:39,522 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 19 edges. 19 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 10:32:39,522 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-08 10:32:39,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-08 10:32:39,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-08 10:32:39,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2022-04-08 10:32:39,523 INFO L87 Difference]: Start difference. First operand 40 states and 42 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 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) [2022-04-08 10:32:39,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 10:32:39,674 INFO L93 Difference]: Finished difference Result 72 states and 76 transitions. [2022-04-08 10:32:39,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-08 10:32:39,674 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 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 39 [2022-04-08 10:32:39,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-08 10:32:39,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 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) [2022-04-08 10:32:39,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 32 transitions. [2022-04-08 10:32:39,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 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) [2022-04-08 10:32:39,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 32 transitions. [2022-04-08 10:32:39,676 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 6 states and 32 transitions. [2022-04-08 10:32:39,699 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 32 edges. 32 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 10:32:39,700 INFO L225 Difference]: With dead ends: 72 [2022-04-08 10:32:39,700 INFO L226 Difference]: Without dead ends: 69 [2022-04-08 10:32:39,700 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=66, Invalid=90, Unknown=0, NotChecked=0, Total=156 [2022-04-08 10:32:39,701 INFO L913 BasicCegarLoop]: 12 mSDtfsCounter, 33 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-08 10:32:39,701 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 29 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-08 10:32:39,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2022-04-08 10:32:39,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 55. [2022-04-08 10:32:39,754 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-08 10:32:39,754 INFO L82 GeneralOperation]: Start isEquivalent. First operand 69 states. Second operand has 55 states, 51 states have (on average 1.0784313725490196) internal successors, (55), 51 states have internal predecessors, (55), 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) [2022-04-08 10:32:39,754 INFO L74 IsIncluded]: Start isIncluded. First operand 69 states. Second operand has 55 states, 51 states have (on average 1.0784313725490196) internal successors, (55), 51 states have internal predecessors, (55), 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) [2022-04-08 10:32:39,755 INFO L87 Difference]: Start difference. First operand 69 states. Second operand has 55 states, 51 states have (on average 1.0784313725490196) internal successors, (55), 51 states have internal predecessors, (55), 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) [2022-04-08 10:32:39,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 10:32:39,756 INFO L93 Difference]: Finished difference Result 69 states and 73 transitions. [2022-04-08 10:32:39,756 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 73 transitions. [2022-04-08 10:32:39,756 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 10:32:39,756 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 10:32:39,756 INFO L74 IsIncluded]: Start isIncluded. First operand has 55 states, 51 states have (on average 1.0784313725490196) internal successors, (55), 51 states have internal predecessors, (55), 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) Second operand 69 states. [2022-04-08 10:32:39,756 INFO L87 Difference]: Start difference. First operand has 55 states, 51 states have (on average 1.0784313725490196) internal successors, (55), 51 states have internal predecessors, (55), 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) Second operand 69 states. [2022-04-08 10:32:39,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 10:32:39,758 INFO L93 Difference]: Finished difference Result 69 states and 73 transitions. [2022-04-08 10:32:39,758 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 73 transitions. [2022-04-08 10:32:39,758 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 10:32:39,758 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 10:32:39,758 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-08 10:32:39,758 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-08 10:32:39,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 51 states have (on average 1.0784313725490196) internal successors, (55), 51 states have internal predecessors, (55), 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) [2022-04-08 10:32:39,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 58 transitions. [2022-04-08 10:32:39,759 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 58 transitions. Word has length 39 [2022-04-08 10:32:39,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-08 10:32:39,759 INFO L478 AbstractCegarLoop]: Abstraction has 55 states and 58 transitions. [2022-04-08 10:32:39,759 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 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) [2022-04-08 10:32:39,759 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 55 states and 58 transitions. [2022-04-08 10:32:39,806 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 58 edges. 58 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 10:32:39,807 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 58 transitions. [2022-04-08 10:32:39,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-04-08 10:32:39,807 INFO L491 BasicCegarLoop]: Found error trace [2022-04-08 10:32:39,807 INFO L499 BasicCegarLoop]: trace histogram [18, 18, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-08 10:32:39,825 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-04-08 10:32:40,023 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-08 10:32:40,024 INFO L403 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-08 10:32:40,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-08 10:32:40,024 INFO L85 PathProgramCache]: Analyzing trace with hash 130610022, now seen corresponding path program 15 times [2022-04-08 10:32:40,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-08 10:32:40,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1884414024] [2022-04-08 10:32:40,086 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Cannot deal with arrays. [2022-04-08 10:32:40,101 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Cannot deal with arrays. [2022-04-08 10:32:40,102 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-08 10:32:40,102 INFO L85 PathProgramCache]: Analyzing trace with hash 130610022, now seen corresponding path program 16 times [2022-04-08 10:32:40,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-08 10:32:40,102 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396873294] [2022-04-08 10:32:40,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-08 10:32:40,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-08 10:32:40,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 10:32:40,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-08 10:32:40,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 10:32:40,191 INFO L290 TraceCheckUtils]: 0: Hoare triple {3188#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(11, 2);call #Ultimate.allocInit(12, 3); {3179#true} is VALID [2022-04-08 10:32:40,192 INFO L290 TraceCheckUtils]: 1: Hoare triple {3179#true} assume true; {3179#true} is VALID [2022-04-08 10:32:40,192 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {3179#true} {3179#true} #44#return; {3179#true} is VALID [2022-04-08 10:32:40,192 INFO L272 TraceCheckUtils]: 0: Hoare triple {3179#true} call ULTIMATE.init(); {3188#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-08 10:32:40,192 INFO L290 TraceCheckUtils]: 1: Hoare triple {3188#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(11, 2);call #Ultimate.allocInit(12, 3); {3179#true} is VALID [2022-04-08 10:32:40,192 INFO L290 TraceCheckUtils]: 2: Hoare triple {3179#true} assume true; {3179#true} is VALID [2022-04-08 10:32:40,192 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {3179#true} {3179#true} #44#return; {3179#true} is VALID [2022-04-08 10:32:40,192 INFO L272 TraceCheckUtils]: 4: Hoare triple {3179#true} call #t~ret6 := main(); {3179#true} is VALID [2022-04-08 10:32:40,193 INFO L290 TraceCheckUtils]: 5: Hoare triple {3179#true} ~a~0 := 6;~b~0 := 6;~a~0 := 0; {3184#(= main_~a~0 0)} is VALID [2022-04-08 10:32:40,193 INFO L290 TraceCheckUtils]: 6: Hoare triple {3184#(= main_~a~0 0)} assume !!(~a~0 < 6);~b~0 := 0; {3184#(= main_~a~0 0)} is VALID [2022-04-08 10:32:40,193 INFO L290 TraceCheckUtils]: 7: Hoare triple {3184#(= main_~a~0 0)} assume !!(~b~0 < 6); {3184#(= main_~a~0 0)} is VALID [2022-04-08 10:32:40,193 INFO L290 TraceCheckUtils]: 8: Hoare triple {3184#(= main_~a~0 0)} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {3184#(= main_~a~0 0)} is VALID [2022-04-08 10:32:40,194 INFO L290 TraceCheckUtils]: 9: Hoare triple {3184#(= main_~a~0 0)} assume !!(~b~0 < 6); {3184#(= main_~a~0 0)} is VALID [2022-04-08 10:32:40,194 INFO L290 TraceCheckUtils]: 10: Hoare triple {3184#(= main_~a~0 0)} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {3184#(= main_~a~0 0)} is VALID [2022-04-08 10:32:40,194 INFO L290 TraceCheckUtils]: 11: Hoare triple {3184#(= main_~a~0 0)} assume !!(~b~0 < 6); {3184#(= main_~a~0 0)} is VALID [2022-04-08 10:32:40,194 INFO L290 TraceCheckUtils]: 12: Hoare triple {3184#(= main_~a~0 0)} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {3184#(= main_~a~0 0)} is VALID [2022-04-08 10:32:40,195 INFO L290 TraceCheckUtils]: 13: Hoare triple {3184#(= main_~a~0 0)} assume !!(~b~0 < 6); {3184#(= main_~a~0 0)} is VALID [2022-04-08 10:32:40,195 INFO L290 TraceCheckUtils]: 14: Hoare triple {3184#(= main_~a~0 0)} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {3184#(= main_~a~0 0)} is VALID [2022-04-08 10:32:40,195 INFO L290 TraceCheckUtils]: 15: Hoare triple {3184#(= main_~a~0 0)} assume !!(~b~0 < 6); {3184#(= main_~a~0 0)} is VALID [2022-04-08 10:32:40,210 INFO L290 TraceCheckUtils]: 16: Hoare triple {3184#(= main_~a~0 0)} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {3184#(= main_~a~0 0)} is VALID [2022-04-08 10:32:40,210 INFO L290 TraceCheckUtils]: 17: Hoare triple {3184#(= main_~a~0 0)} assume !!(~b~0 < 6); {3184#(= main_~a~0 0)} is VALID [2022-04-08 10:32:40,210 INFO L290 TraceCheckUtils]: 18: Hoare triple {3184#(= main_~a~0 0)} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {3184#(= main_~a~0 0)} is VALID [2022-04-08 10:32:40,210 INFO L290 TraceCheckUtils]: 19: Hoare triple {3184#(= main_~a~0 0)} assume !(~b~0 < 6); {3184#(= main_~a~0 0)} is VALID [2022-04-08 10:32:40,211 INFO L290 TraceCheckUtils]: 20: Hoare triple {3184#(= main_~a~0 0)} #t~pre4 := 1 + ~a~0;~a~0 := 1 + ~a~0;havoc #t~pre4; {3185#(<= main_~a~0 1)} is VALID [2022-04-08 10:32:40,211 INFO L290 TraceCheckUtils]: 21: Hoare triple {3185#(<= main_~a~0 1)} assume !!(~a~0 < 6);~b~0 := 0; {3185#(<= main_~a~0 1)} is VALID [2022-04-08 10:32:40,211 INFO L290 TraceCheckUtils]: 22: Hoare triple {3185#(<= main_~a~0 1)} assume !!(~b~0 < 6); {3185#(<= main_~a~0 1)} is VALID [2022-04-08 10:32:40,212 INFO L290 TraceCheckUtils]: 23: Hoare triple {3185#(<= main_~a~0 1)} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {3185#(<= main_~a~0 1)} is VALID [2022-04-08 10:32:40,212 INFO L290 TraceCheckUtils]: 24: Hoare triple {3185#(<= main_~a~0 1)} assume !!(~b~0 < 6); {3185#(<= main_~a~0 1)} is VALID [2022-04-08 10:32:40,212 INFO L290 TraceCheckUtils]: 25: Hoare triple {3185#(<= main_~a~0 1)} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {3185#(<= main_~a~0 1)} is VALID [2022-04-08 10:32:40,212 INFO L290 TraceCheckUtils]: 26: Hoare triple {3185#(<= main_~a~0 1)} assume !!(~b~0 < 6); {3185#(<= main_~a~0 1)} is VALID [2022-04-08 10:32:40,213 INFO L290 TraceCheckUtils]: 27: Hoare triple {3185#(<= main_~a~0 1)} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {3185#(<= main_~a~0 1)} is VALID [2022-04-08 10:32:40,213 INFO L290 TraceCheckUtils]: 28: Hoare triple {3185#(<= main_~a~0 1)} assume !!(~b~0 < 6); {3185#(<= main_~a~0 1)} is VALID [2022-04-08 10:32:40,213 INFO L290 TraceCheckUtils]: 29: Hoare triple {3185#(<= main_~a~0 1)} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {3185#(<= main_~a~0 1)} is VALID [2022-04-08 10:32:40,213 INFO L290 TraceCheckUtils]: 30: Hoare triple {3185#(<= main_~a~0 1)} assume !!(~b~0 < 6); {3185#(<= main_~a~0 1)} is VALID [2022-04-08 10:32:40,213 INFO L290 TraceCheckUtils]: 31: Hoare triple {3185#(<= main_~a~0 1)} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {3185#(<= main_~a~0 1)} is VALID [2022-04-08 10:32:40,214 INFO L290 TraceCheckUtils]: 32: Hoare triple {3185#(<= main_~a~0 1)} assume !!(~b~0 < 6); {3185#(<= main_~a~0 1)} is VALID [2022-04-08 10:32:40,214 INFO L290 TraceCheckUtils]: 33: Hoare triple {3185#(<= main_~a~0 1)} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {3185#(<= main_~a~0 1)} is VALID [2022-04-08 10:32:40,214 INFO L290 TraceCheckUtils]: 34: Hoare triple {3185#(<= main_~a~0 1)} assume !(~b~0 < 6); {3185#(<= main_~a~0 1)} is VALID [2022-04-08 10:32:40,215 INFO L290 TraceCheckUtils]: 35: Hoare triple {3185#(<= main_~a~0 1)} #t~pre4 := 1 + ~a~0;~a~0 := 1 + ~a~0;havoc #t~pre4; {3186#(<= main_~a~0 2)} is VALID [2022-04-08 10:32:40,215 INFO L290 TraceCheckUtils]: 36: Hoare triple {3186#(<= main_~a~0 2)} assume !!(~a~0 < 6);~b~0 := 0; {3186#(<= main_~a~0 2)} is VALID [2022-04-08 10:32:40,215 INFO L290 TraceCheckUtils]: 37: Hoare triple {3186#(<= main_~a~0 2)} assume !!(~b~0 < 6); {3186#(<= main_~a~0 2)} is VALID [2022-04-08 10:32:40,215 INFO L290 TraceCheckUtils]: 38: Hoare triple {3186#(<= main_~a~0 2)} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {3186#(<= main_~a~0 2)} is VALID [2022-04-08 10:32:40,216 INFO L290 TraceCheckUtils]: 39: Hoare triple {3186#(<= main_~a~0 2)} assume !!(~b~0 < 6); {3186#(<= main_~a~0 2)} is VALID [2022-04-08 10:32:40,216 INFO L290 TraceCheckUtils]: 40: Hoare triple {3186#(<= main_~a~0 2)} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {3186#(<= main_~a~0 2)} is VALID [2022-04-08 10:32:40,216 INFO L290 TraceCheckUtils]: 41: Hoare triple {3186#(<= main_~a~0 2)} assume !!(~b~0 < 6); {3186#(<= main_~a~0 2)} is VALID [2022-04-08 10:32:40,216 INFO L290 TraceCheckUtils]: 42: Hoare triple {3186#(<= main_~a~0 2)} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {3186#(<= main_~a~0 2)} is VALID [2022-04-08 10:32:40,217 INFO L290 TraceCheckUtils]: 43: Hoare triple {3186#(<= main_~a~0 2)} assume !!(~b~0 < 6); {3186#(<= main_~a~0 2)} is VALID [2022-04-08 10:32:40,217 INFO L290 TraceCheckUtils]: 44: Hoare triple {3186#(<= main_~a~0 2)} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {3186#(<= main_~a~0 2)} is VALID [2022-04-08 10:32:40,217 INFO L290 TraceCheckUtils]: 45: Hoare triple {3186#(<= main_~a~0 2)} assume !!(~b~0 < 6); {3186#(<= main_~a~0 2)} is VALID [2022-04-08 10:32:40,217 INFO L290 TraceCheckUtils]: 46: Hoare triple {3186#(<= main_~a~0 2)} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {3186#(<= main_~a~0 2)} is VALID [2022-04-08 10:32:40,218 INFO L290 TraceCheckUtils]: 47: Hoare triple {3186#(<= main_~a~0 2)} assume !!(~b~0 < 6); {3186#(<= main_~a~0 2)} is VALID [2022-04-08 10:32:40,218 INFO L290 TraceCheckUtils]: 48: Hoare triple {3186#(<= main_~a~0 2)} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {3186#(<= main_~a~0 2)} is VALID [2022-04-08 10:32:40,218 INFO L290 TraceCheckUtils]: 49: Hoare triple {3186#(<= main_~a~0 2)} assume !(~b~0 < 6); {3186#(<= main_~a~0 2)} is VALID [2022-04-08 10:32:40,218 INFO L290 TraceCheckUtils]: 50: Hoare triple {3186#(<= main_~a~0 2)} #t~pre4 := 1 + ~a~0;~a~0 := 1 + ~a~0;havoc #t~pre4; {3187#(<= main_~a~0 3)} is VALID [2022-04-08 10:32:40,219 INFO L290 TraceCheckUtils]: 51: Hoare triple {3187#(<= main_~a~0 3)} assume !(~a~0 < 6); {3180#false} is VALID [2022-04-08 10:32:40,219 INFO L290 TraceCheckUtils]: 52: Hoare triple {3180#false} assume !(6 == ~a~0 && 6 == ~b~0); {3180#false} is VALID [2022-04-08 10:32:40,219 INFO L290 TraceCheckUtils]: 53: Hoare triple {3180#false} assume !false; {3180#false} is VALID [2022-04-08 10:32:40,219 INFO L134 CoverageAnalysis]: Checked inductivity of 372 backedges. 0 proven. 264 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2022-04-08 10:32:40,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-08 10:32:40,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396873294] [2022-04-08 10:32:40,220 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396873294] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-08 10:32:40,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2024124642] [2022-04-08 10:32:40,220 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-04-08 10:32:40,220 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-08 10:32:40,220 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-08 10:32:40,221 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-08 10:32:40,222 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-04-08 10:32:40,253 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-04-08 10:32:40,253 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-08 10:32:40,254 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 5 conjunts are in the unsatisfiable core [2022-04-08 10:32:40,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 10:32:40,262 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-08 10:32:40,452 INFO L272 TraceCheckUtils]: 0: Hoare triple {3179#true} call ULTIMATE.init(); {3179#true} is VALID [2022-04-08 10:32:40,453 INFO L290 TraceCheckUtils]: 1: Hoare triple {3179#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(11, 2);call #Ultimate.allocInit(12, 3); {3179#true} is VALID [2022-04-08 10:32:40,453 INFO L290 TraceCheckUtils]: 2: Hoare triple {3179#true} assume true; {3179#true} is VALID [2022-04-08 10:32:40,453 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {3179#true} {3179#true} #44#return; {3179#true} is VALID [2022-04-08 10:32:40,453 INFO L272 TraceCheckUtils]: 4: Hoare triple {3179#true} call #t~ret6 := main(); {3179#true} is VALID [2022-04-08 10:32:40,453 INFO L290 TraceCheckUtils]: 5: Hoare triple {3179#true} ~a~0 := 6;~b~0 := 6;~a~0 := 0; {3207#(<= main_~a~0 0)} is VALID [2022-04-08 10:32:40,453 INFO L290 TraceCheckUtils]: 6: Hoare triple {3207#(<= main_~a~0 0)} assume !!(~a~0 < 6);~b~0 := 0; {3207#(<= main_~a~0 0)} is VALID [2022-04-08 10:32:40,454 INFO L290 TraceCheckUtils]: 7: Hoare triple {3207#(<= main_~a~0 0)} assume !!(~b~0 < 6); {3207#(<= main_~a~0 0)} is VALID [2022-04-08 10:32:40,454 INFO L290 TraceCheckUtils]: 8: Hoare triple {3207#(<= main_~a~0 0)} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {3207#(<= main_~a~0 0)} is VALID [2022-04-08 10:32:40,454 INFO L290 TraceCheckUtils]: 9: Hoare triple {3207#(<= main_~a~0 0)} assume !!(~b~0 < 6); {3207#(<= main_~a~0 0)} is VALID [2022-04-08 10:32:40,455 INFO L290 TraceCheckUtils]: 10: Hoare triple {3207#(<= main_~a~0 0)} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {3207#(<= main_~a~0 0)} is VALID [2022-04-08 10:32:40,455 INFO L290 TraceCheckUtils]: 11: Hoare triple {3207#(<= main_~a~0 0)} assume !!(~b~0 < 6); {3207#(<= main_~a~0 0)} is VALID [2022-04-08 10:32:40,455 INFO L290 TraceCheckUtils]: 12: Hoare triple {3207#(<= main_~a~0 0)} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {3207#(<= main_~a~0 0)} is VALID [2022-04-08 10:32:40,455 INFO L290 TraceCheckUtils]: 13: Hoare triple {3207#(<= main_~a~0 0)} assume !!(~b~0 < 6); {3207#(<= main_~a~0 0)} is VALID [2022-04-08 10:32:40,456 INFO L290 TraceCheckUtils]: 14: Hoare triple {3207#(<= main_~a~0 0)} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {3207#(<= main_~a~0 0)} is VALID [2022-04-08 10:32:40,456 INFO L290 TraceCheckUtils]: 15: Hoare triple {3207#(<= main_~a~0 0)} assume !!(~b~0 < 6); {3207#(<= main_~a~0 0)} is VALID [2022-04-08 10:32:40,456 INFO L290 TraceCheckUtils]: 16: Hoare triple {3207#(<= main_~a~0 0)} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {3207#(<= main_~a~0 0)} is VALID [2022-04-08 10:32:40,456 INFO L290 TraceCheckUtils]: 17: Hoare triple {3207#(<= main_~a~0 0)} assume !!(~b~0 < 6); {3207#(<= main_~a~0 0)} is VALID [2022-04-08 10:32:40,457 INFO L290 TraceCheckUtils]: 18: Hoare triple {3207#(<= main_~a~0 0)} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {3207#(<= main_~a~0 0)} is VALID [2022-04-08 10:32:40,457 INFO L290 TraceCheckUtils]: 19: Hoare triple {3207#(<= main_~a~0 0)} assume !(~b~0 < 6); {3207#(<= main_~a~0 0)} is VALID [2022-04-08 10:32:40,457 INFO L290 TraceCheckUtils]: 20: Hoare triple {3207#(<= main_~a~0 0)} #t~pre4 := 1 + ~a~0;~a~0 := 1 + ~a~0;havoc #t~pre4; {3185#(<= main_~a~0 1)} is VALID [2022-04-08 10:32:40,458 INFO L290 TraceCheckUtils]: 21: Hoare triple {3185#(<= main_~a~0 1)} assume !!(~a~0 < 6);~b~0 := 0; {3185#(<= main_~a~0 1)} is VALID [2022-04-08 10:32:40,458 INFO L290 TraceCheckUtils]: 22: Hoare triple {3185#(<= main_~a~0 1)} assume !!(~b~0 < 6); {3185#(<= main_~a~0 1)} is VALID [2022-04-08 10:32:40,458 INFO L290 TraceCheckUtils]: 23: Hoare triple {3185#(<= main_~a~0 1)} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {3185#(<= main_~a~0 1)} is VALID [2022-04-08 10:32:40,459 INFO L290 TraceCheckUtils]: 24: Hoare triple {3185#(<= main_~a~0 1)} assume !!(~b~0 < 6); {3185#(<= main_~a~0 1)} is VALID [2022-04-08 10:32:40,459 INFO L290 TraceCheckUtils]: 25: Hoare triple {3185#(<= main_~a~0 1)} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {3185#(<= main_~a~0 1)} is VALID [2022-04-08 10:32:40,459 INFO L290 TraceCheckUtils]: 26: Hoare triple {3185#(<= main_~a~0 1)} assume !!(~b~0 < 6); {3185#(<= main_~a~0 1)} is VALID [2022-04-08 10:32:40,459 INFO L290 TraceCheckUtils]: 27: Hoare triple {3185#(<= main_~a~0 1)} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {3185#(<= main_~a~0 1)} is VALID [2022-04-08 10:32:40,460 INFO L290 TraceCheckUtils]: 28: Hoare triple {3185#(<= main_~a~0 1)} assume !!(~b~0 < 6); {3185#(<= main_~a~0 1)} is VALID [2022-04-08 10:32:40,460 INFO L290 TraceCheckUtils]: 29: Hoare triple {3185#(<= main_~a~0 1)} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {3185#(<= main_~a~0 1)} is VALID [2022-04-08 10:32:40,460 INFO L290 TraceCheckUtils]: 30: Hoare triple {3185#(<= main_~a~0 1)} assume !!(~b~0 < 6); {3185#(<= main_~a~0 1)} is VALID [2022-04-08 10:32:40,460 INFO L290 TraceCheckUtils]: 31: Hoare triple {3185#(<= main_~a~0 1)} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {3185#(<= main_~a~0 1)} is VALID [2022-04-08 10:32:40,461 INFO L290 TraceCheckUtils]: 32: Hoare triple {3185#(<= main_~a~0 1)} assume !!(~b~0 < 6); {3185#(<= main_~a~0 1)} is VALID [2022-04-08 10:32:40,461 INFO L290 TraceCheckUtils]: 33: Hoare triple {3185#(<= main_~a~0 1)} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {3185#(<= main_~a~0 1)} is VALID [2022-04-08 10:32:40,461 INFO L290 TraceCheckUtils]: 34: Hoare triple {3185#(<= main_~a~0 1)} assume !(~b~0 < 6); {3185#(<= main_~a~0 1)} is VALID [2022-04-08 10:32:40,462 INFO L290 TraceCheckUtils]: 35: Hoare triple {3185#(<= main_~a~0 1)} #t~pre4 := 1 + ~a~0;~a~0 := 1 + ~a~0;havoc #t~pre4; {3186#(<= main_~a~0 2)} is VALID [2022-04-08 10:32:40,462 INFO L290 TraceCheckUtils]: 36: Hoare triple {3186#(<= main_~a~0 2)} assume !!(~a~0 < 6);~b~0 := 0; {3186#(<= main_~a~0 2)} is VALID [2022-04-08 10:32:40,462 INFO L290 TraceCheckUtils]: 37: Hoare triple {3186#(<= main_~a~0 2)} assume !!(~b~0 < 6); {3186#(<= main_~a~0 2)} is VALID [2022-04-08 10:32:40,463 INFO L290 TraceCheckUtils]: 38: Hoare triple {3186#(<= main_~a~0 2)} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {3186#(<= main_~a~0 2)} is VALID [2022-04-08 10:32:40,463 INFO L290 TraceCheckUtils]: 39: Hoare triple {3186#(<= main_~a~0 2)} assume !!(~b~0 < 6); {3186#(<= main_~a~0 2)} is VALID [2022-04-08 10:32:40,463 INFO L290 TraceCheckUtils]: 40: Hoare triple {3186#(<= main_~a~0 2)} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {3186#(<= main_~a~0 2)} is VALID [2022-04-08 10:32:40,463 INFO L290 TraceCheckUtils]: 41: Hoare triple {3186#(<= main_~a~0 2)} assume !!(~b~0 < 6); {3186#(<= main_~a~0 2)} is VALID [2022-04-08 10:32:40,464 INFO L290 TraceCheckUtils]: 42: Hoare triple {3186#(<= main_~a~0 2)} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {3186#(<= main_~a~0 2)} is VALID [2022-04-08 10:32:40,464 INFO L290 TraceCheckUtils]: 43: Hoare triple {3186#(<= main_~a~0 2)} assume !!(~b~0 < 6); {3186#(<= main_~a~0 2)} is VALID [2022-04-08 10:32:40,464 INFO L290 TraceCheckUtils]: 44: Hoare triple {3186#(<= main_~a~0 2)} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {3186#(<= main_~a~0 2)} is VALID [2022-04-08 10:32:40,465 INFO L290 TraceCheckUtils]: 45: Hoare triple {3186#(<= main_~a~0 2)} assume !!(~b~0 < 6); {3186#(<= main_~a~0 2)} is VALID [2022-04-08 10:32:40,465 INFO L290 TraceCheckUtils]: 46: Hoare triple {3186#(<= main_~a~0 2)} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {3186#(<= main_~a~0 2)} is VALID [2022-04-08 10:32:40,465 INFO L290 TraceCheckUtils]: 47: Hoare triple {3186#(<= main_~a~0 2)} assume !!(~b~0 < 6); {3186#(<= main_~a~0 2)} is VALID [2022-04-08 10:32:40,465 INFO L290 TraceCheckUtils]: 48: Hoare triple {3186#(<= main_~a~0 2)} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {3186#(<= main_~a~0 2)} is VALID [2022-04-08 10:32:40,466 INFO L290 TraceCheckUtils]: 49: Hoare triple {3186#(<= main_~a~0 2)} assume !(~b~0 < 6); {3186#(<= main_~a~0 2)} is VALID [2022-04-08 10:32:40,466 INFO L290 TraceCheckUtils]: 50: Hoare triple {3186#(<= main_~a~0 2)} #t~pre4 := 1 + ~a~0;~a~0 := 1 + ~a~0;havoc #t~pre4; {3187#(<= main_~a~0 3)} is VALID [2022-04-08 10:32:40,466 INFO L290 TraceCheckUtils]: 51: Hoare triple {3187#(<= main_~a~0 3)} assume !(~a~0 < 6); {3180#false} is VALID [2022-04-08 10:32:40,466 INFO L290 TraceCheckUtils]: 52: Hoare triple {3180#false} assume !(6 == ~a~0 && 6 == ~b~0); {3180#false} is VALID [2022-04-08 10:32:40,467 INFO L290 TraceCheckUtils]: 53: Hoare triple {3180#false} assume !false; {3180#false} is VALID [2022-04-08 10:32:40,467 INFO L134 CoverageAnalysis]: Checked inductivity of 372 backedges. 0 proven. 264 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2022-04-08 10:32:40,467 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-08 10:32:40,700 INFO L290 TraceCheckUtils]: 53: Hoare triple {3180#false} assume !false; {3180#false} is VALID [2022-04-08 10:32:40,700 INFO L290 TraceCheckUtils]: 52: Hoare triple {3180#false} assume !(6 == ~a~0 && 6 == ~b~0); {3180#false} is VALID [2022-04-08 10:32:40,701 INFO L290 TraceCheckUtils]: 51: Hoare triple {3358#(< main_~a~0 6)} assume !(~a~0 < 6); {3180#false} is VALID [2022-04-08 10:32:40,701 INFO L290 TraceCheckUtils]: 50: Hoare triple {3362#(< main_~a~0 5)} #t~pre4 := 1 + ~a~0;~a~0 := 1 + ~a~0;havoc #t~pre4; {3358#(< main_~a~0 6)} is VALID [2022-04-08 10:32:40,702 INFO L290 TraceCheckUtils]: 49: Hoare triple {3362#(< main_~a~0 5)} assume !(~b~0 < 6); {3362#(< main_~a~0 5)} is VALID [2022-04-08 10:32:40,702 INFO L290 TraceCheckUtils]: 48: Hoare triple {3362#(< main_~a~0 5)} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {3362#(< main_~a~0 5)} is VALID [2022-04-08 10:32:40,702 INFO L290 TraceCheckUtils]: 47: Hoare triple {3362#(< main_~a~0 5)} assume !!(~b~0 < 6); {3362#(< main_~a~0 5)} is VALID [2022-04-08 10:32:40,702 INFO L290 TraceCheckUtils]: 46: Hoare triple {3362#(< main_~a~0 5)} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {3362#(< main_~a~0 5)} is VALID [2022-04-08 10:32:40,703 INFO L290 TraceCheckUtils]: 45: Hoare triple {3362#(< main_~a~0 5)} assume !!(~b~0 < 6); {3362#(< main_~a~0 5)} is VALID [2022-04-08 10:32:40,703 INFO L290 TraceCheckUtils]: 44: Hoare triple {3362#(< main_~a~0 5)} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {3362#(< main_~a~0 5)} is VALID [2022-04-08 10:32:40,703 INFO L290 TraceCheckUtils]: 43: Hoare triple {3362#(< main_~a~0 5)} assume !!(~b~0 < 6); {3362#(< main_~a~0 5)} is VALID [2022-04-08 10:32:40,703 INFO L290 TraceCheckUtils]: 42: Hoare triple {3362#(< main_~a~0 5)} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {3362#(< main_~a~0 5)} is VALID [2022-04-08 10:32:40,704 INFO L290 TraceCheckUtils]: 41: Hoare triple {3362#(< main_~a~0 5)} assume !!(~b~0 < 6); {3362#(< main_~a~0 5)} is VALID [2022-04-08 10:32:40,704 INFO L290 TraceCheckUtils]: 40: Hoare triple {3362#(< main_~a~0 5)} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {3362#(< main_~a~0 5)} is VALID [2022-04-08 10:32:40,704 INFO L290 TraceCheckUtils]: 39: Hoare triple {3362#(< main_~a~0 5)} assume !!(~b~0 < 6); {3362#(< main_~a~0 5)} is VALID [2022-04-08 10:32:40,705 INFO L290 TraceCheckUtils]: 38: Hoare triple {3362#(< main_~a~0 5)} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {3362#(< main_~a~0 5)} is VALID [2022-04-08 10:32:40,705 INFO L290 TraceCheckUtils]: 37: Hoare triple {3362#(< main_~a~0 5)} assume !!(~b~0 < 6); {3362#(< main_~a~0 5)} is VALID [2022-04-08 10:32:40,705 INFO L290 TraceCheckUtils]: 36: Hoare triple {3362#(< main_~a~0 5)} assume !!(~a~0 < 6);~b~0 := 0; {3362#(< main_~a~0 5)} is VALID [2022-04-08 10:32:40,706 INFO L290 TraceCheckUtils]: 35: Hoare triple {3187#(<= main_~a~0 3)} #t~pre4 := 1 + ~a~0;~a~0 := 1 + ~a~0;havoc #t~pre4; {3362#(< main_~a~0 5)} is VALID [2022-04-08 10:32:40,706 INFO L290 TraceCheckUtils]: 34: Hoare triple {3187#(<= main_~a~0 3)} assume !(~b~0 < 6); {3187#(<= main_~a~0 3)} is VALID [2022-04-08 10:32:40,706 INFO L290 TraceCheckUtils]: 33: Hoare triple {3187#(<= main_~a~0 3)} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {3187#(<= main_~a~0 3)} is VALID [2022-04-08 10:32:40,706 INFO L290 TraceCheckUtils]: 32: Hoare triple {3187#(<= main_~a~0 3)} assume !!(~b~0 < 6); {3187#(<= main_~a~0 3)} is VALID [2022-04-08 10:32:40,707 INFO L290 TraceCheckUtils]: 31: Hoare triple {3187#(<= main_~a~0 3)} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {3187#(<= main_~a~0 3)} is VALID [2022-04-08 10:32:40,707 INFO L290 TraceCheckUtils]: 30: Hoare triple {3187#(<= main_~a~0 3)} assume !!(~b~0 < 6); {3187#(<= main_~a~0 3)} is VALID [2022-04-08 10:32:40,707 INFO L290 TraceCheckUtils]: 29: Hoare triple {3187#(<= main_~a~0 3)} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {3187#(<= main_~a~0 3)} is VALID [2022-04-08 10:32:40,707 INFO L290 TraceCheckUtils]: 28: Hoare triple {3187#(<= main_~a~0 3)} assume !!(~b~0 < 6); {3187#(<= main_~a~0 3)} is VALID [2022-04-08 10:32:40,708 INFO L290 TraceCheckUtils]: 27: Hoare triple {3187#(<= main_~a~0 3)} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {3187#(<= main_~a~0 3)} is VALID [2022-04-08 10:32:40,708 INFO L290 TraceCheckUtils]: 26: Hoare triple {3187#(<= main_~a~0 3)} assume !!(~b~0 < 6); {3187#(<= main_~a~0 3)} is VALID [2022-04-08 10:32:40,708 INFO L290 TraceCheckUtils]: 25: Hoare triple {3187#(<= main_~a~0 3)} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {3187#(<= main_~a~0 3)} is VALID [2022-04-08 10:32:40,709 INFO L290 TraceCheckUtils]: 24: Hoare triple {3187#(<= main_~a~0 3)} assume !!(~b~0 < 6); {3187#(<= main_~a~0 3)} is VALID [2022-04-08 10:32:40,709 INFO L290 TraceCheckUtils]: 23: Hoare triple {3187#(<= main_~a~0 3)} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {3187#(<= main_~a~0 3)} is VALID [2022-04-08 10:32:40,709 INFO L290 TraceCheckUtils]: 22: Hoare triple {3187#(<= main_~a~0 3)} assume !!(~b~0 < 6); {3187#(<= main_~a~0 3)} is VALID [2022-04-08 10:32:40,709 INFO L290 TraceCheckUtils]: 21: Hoare triple {3187#(<= main_~a~0 3)} assume !!(~a~0 < 6);~b~0 := 0; {3187#(<= main_~a~0 3)} is VALID [2022-04-08 10:32:40,710 INFO L290 TraceCheckUtils]: 20: Hoare triple {3186#(<= main_~a~0 2)} #t~pre4 := 1 + ~a~0;~a~0 := 1 + ~a~0;havoc #t~pre4; {3187#(<= main_~a~0 3)} is VALID [2022-04-08 10:32:40,710 INFO L290 TraceCheckUtils]: 19: Hoare triple {3186#(<= main_~a~0 2)} assume !(~b~0 < 6); {3186#(<= main_~a~0 2)} is VALID [2022-04-08 10:32:40,710 INFO L290 TraceCheckUtils]: 18: Hoare triple {3186#(<= main_~a~0 2)} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {3186#(<= main_~a~0 2)} is VALID [2022-04-08 10:32:40,711 INFO L290 TraceCheckUtils]: 17: Hoare triple {3186#(<= main_~a~0 2)} assume !!(~b~0 < 6); {3186#(<= main_~a~0 2)} is VALID [2022-04-08 10:32:40,711 INFO L290 TraceCheckUtils]: 16: Hoare triple {3186#(<= main_~a~0 2)} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {3186#(<= main_~a~0 2)} is VALID [2022-04-08 10:32:40,711 INFO L290 TraceCheckUtils]: 15: Hoare triple {3186#(<= main_~a~0 2)} assume !!(~b~0 < 6); {3186#(<= main_~a~0 2)} is VALID [2022-04-08 10:32:40,712 INFO L290 TraceCheckUtils]: 14: Hoare triple {3186#(<= main_~a~0 2)} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {3186#(<= main_~a~0 2)} is VALID [2022-04-08 10:32:40,712 INFO L290 TraceCheckUtils]: 13: Hoare triple {3186#(<= main_~a~0 2)} assume !!(~b~0 < 6); {3186#(<= main_~a~0 2)} is VALID [2022-04-08 10:32:40,712 INFO L290 TraceCheckUtils]: 12: Hoare triple {3186#(<= main_~a~0 2)} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {3186#(<= main_~a~0 2)} is VALID [2022-04-08 10:32:40,712 INFO L290 TraceCheckUtils]: 11: Hoare triple {3186#(<= main_~a~0 2)} assume !!(~b~0 < 6); {3186#(<= main_~a~0 2)} is VALID [2022-04-08 10:32:40,713 INFO L290 TraceCheckUtils]: 10: Hoare triple {3186#(<= main_~a~0 2)} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {3186#(<= main_~a~0 2)} is VALID [2022-04-08 10:32:40,713 INFO L290 TraceCheckUtils]: 9: Hoare triple {3186#(<= main_~a~0 2)} assume !!(~b~0 < 6); {3186#(<= main_~a~0 2)} is VALID [2022-04-08 10:32:40,713 INFO L290 TraceCheckUtils]: 8: Hoare triple {3186#(<= main_~a~0 2)} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {3186#(<= main_~a~0 2)} is VALID [2022-04-08 10:32:40,713 INFO L290 TraceCheckUtils]: 7: Hoare triple {3186#(<= main_~a~0 2)} assume !!(~b~0 < 6); {3186#(<= main_~a~0 2)} is VALID [2022-04-08 10:32:40,714 INFO L290 TraceCheckUtils]: 6: Hoare triple {3186#(<= main_~a~0 2)} assume !!(~a~0 < 6);~b~0 := 0; {3186#(<= main_~a~0 2)} is VALID [2022-04-08 10:32:40,714 INFO L290 TraceCheckUtils]: 5: Hoare triple {3179#true} ~a~0 := 6;~b~0 := 6;~a~0 := 0; {3186#(<= main_~a~0 2)} is VALID [2022-04-08 10:32:40,714 INFO L272 TraceCheckUtils]: 4: Hoare triple {3179#true} call #t~ret6 := main(); {3179#true} is VALID [2022-04-08 10:32:40,714 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {3179#true} {3179#true} #44#return; {3179#true} is VALID [2022-04-08 10:32:40,714 INFO L290 TraceCheckUtils]: 2: Hoare triple {3179#true} assume true; {3179#true} is VALID [2022-04-08 10:32:40,714 INFO L290 TraceCheckUtils]: 1: Hoare triple {3179#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(11, 2);call #Ultimate.allocInit(12, 3); {3179#true} is VALID [2022-04-08 10:32:40,714 INFO L272 TraceCheckUtils]: 0: Hoare triple {3179#true} call ULTIMATE.init(); {3179#true} is VALID [2022-04-08 10:32:40,715 INFO L134 CoverageAnalysis]: Checked inductivity of 372 backedges. 0 proven. 264 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2022-04-08 10:32:40,715 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2024124642] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-08 10:32:40,715 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-08 10:32:40,715 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 10 [2022-04-08 10:32:40,715 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-08 10:32:40,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1884414024] [2022-04-08 10:32:40,715 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1884414024] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-08 10:32:40,715 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-08 10:32:40,715 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-04-08 10:32:40,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700952161] [2022-04-08 10:32:40,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-08 10:32:40,716 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 6 states have internal predecessors, (21), 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 54 [2022-04-08 10:32:40,716 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-08 10:32:40,716 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 7 states, 7 states have (on average 3.0) internal successors, (21), 6 states have internal predecessors, (21), 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) [2022-04-08 10:32:40,731 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 24 edges. 24 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 10:32:40,731 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-04-08 10:32:40,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-08 10:32:40,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-04-08 10:32:40,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2022-04-08 10:32:40,731 INFO L87 Difference]: Start difference. First operand 55 states and 58 transitions. Second operand has 7 states, 7 states have (on average 3.0) internal successors, (21), 6 states have internal predecessors, (21), 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) [2022-04-08 10:32:40,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 10:32:40,940 INFO L93 Difference]: Finished difference Result 87 states and 92 transitions. [2022-04-08 10:32:40,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-04-08 10:32:40,940 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 6 states have internal predecessors, (21), 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 54 [2022-04-08 10:32:40,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-08 10:32:40,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 3.0) internal successors, (21), 6 states have internal predecessors, (21), 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) [2022-04-08 10:32:40,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 37 transitions. [2022-04-08 10:32:40,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 3.0) internal successors, (21), 6 states have internal predecessors, (21), 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) [2022-04-08 10:32:40,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 37 transitions. [2022-04-08 10:32:40,942 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 7 states and 37 transitions. [2022-04-08 10:32:40,969 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 37 edges. 37 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 10:32:40,971 INFO L225 Difference]: With dead ends: 87 [2022-04-08 10:32:40,971 INFO L226 Difference]: Without dead ends: 84 [2022-04-08 10:32:40,971 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 106 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=107, Unknown=0, NotChecked=0, Total=182 [2022-04-08 10:32:40,972 INFO L913 BasicCegarLoop]: 12 mSDtfsCounter, 41 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-08 10:32:40,972 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 29 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-08 10:32:40,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2022-04-08 10:32:41,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 70. [2022-04-08 10:32:41,053 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-08 10:32:41,053 INFO L82 GeneralOperation]: Start isEquivalent. First operand 84 states. Second operand has 70 states, 66 states have (on average 1.0757575757575757) internal successors, (71), 66 states have internal predecessors, (71), 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) [2022-04-08 10:32:41,054 INFO L74 IsIncluded]: Start isIncluded. First operand 84 states. Second operand has 70 states, 66 states have (on average 1.0757575757575757) internal successors, (71), 66 states have internal predecessors, (71), 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) [2022-04-08 10:32:41,054 INFO L87 Difference]: Start difference. First operand 84 states. Second operand has 70 states, 66 states have (on average 1.0757575757575757) internal successors, (71), 66 states have internal predecessors, (71), 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) [2022-04-08 10:32:41,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 10:32:41,055 INFO L93 Difference]: Finished difference Result 84 states and 89 transitions. [2022-04-08 10:32:41,055 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 89 transitions. [2022-04-08 10:32:41,055 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 10:32:41,055 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 10:32:41,056 INFO L74 IsIncluded]: Start isIncluded. First operand has 70 states, 66 states have (on average 1.0757575757575757) internal successors, (71), 66 states have internal predecessors, (71), 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) Second operand 84 states. [2022-04-08 10:32:41,056 INFO L87 Difference]: Start difference. First operand has 70 states, 66 states have (on average 1.0757575757575757) internal successors, (71), 66 states have internal predecessors, (71), 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) Second operand 84 states. [2022-04-08 10:32:41,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 10:32:41,057 INFO L93 Difference]: Finished difference Result 84 states and 89 transitions. [2022-04-08 10:32:41,057 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 89 transitions. [2022-04-08 10:32:41,057 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 10:32:41,057 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 10:32:41,057 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-08 10:32:41,057 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-08 10:32:41,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 66 states have (on average 1.0757575757575757) internal successors, (71), 66 states have internal predecessors, (71), 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) [2022-04-08 10:32:41,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 74 transitions. [2022-04-08 10:32:41,058 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 74 transitions. Word has length 54 [2022-04-08 10:32:41,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-08 10:32:41,058 INFO L478 AbstractCegarLoop]: Abstraction has 70 states and 74 transitions. [2022-04-08 10:32:41,058 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 6 states have internal predecessors, (21), 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) [2022-04-08 10:32:41,059 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 70 states and 74 transitions. [2022-04-08 10:32:41,124 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 74 edges. 74 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 10:32:41,124 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 74 transitions. [2022-04-08 10:32:41,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-04-08 10:32:41,124 INFO L491 BasicCegarLoop]: Found error trace [2022-04-08 10:32:41,124 INFO L499 BasicCegarLoop]: trace histogram [24, 24, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-08 10:32:41,145 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-04-08 10:32:41,340 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-04-08 10:32:41,341 INFO L403 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-08 10:32:41,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-08 10:32:41,341 INFO L85 PathProgramCache]: Analyzing trace with hash -1010753069, now seen corresponding path program 17 times [2022-04-08 10:32:41,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-08 10:32:41,341 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [755869282] [2022-04-08 10:32:41,404 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Cannot deal with arrays. [2022-04-08 10:32:41,424 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Cannot deal with arrays. [2022-04-08 10:32:41,424 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-08 10:32:41,425 INFO L85 PathProgramCache]: Analyzing trace with hash -1010753069, now seen corresponding path program 18 times [2022-04-08 10:32:41,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-08 10:32:41,425 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789310732] [2022-04-08 10:32:41,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-08 10:32:41,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-08 10:32:41,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 10:32:41,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-08 10:32:41,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 10:32:41,508 INFO L290 TraceCheckUtils]: 0: Hoare triple {4015#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(11, 2);call #Ultimate.allocInit(12, 3); {4005#true} is VALID [2022-04-08 10:32:41,508 INFO L290 TraceCheckUtils]: 1: Hoare triple {4005#true} assume true; {4005#true} is VALID [2022-04-08 10:32:41,509 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {4005#true} {4005#true} #44#return; {4005#true} is VALID [2022-04-08 10:32:41,509 INFO L272 TraceCheckUtils]: 0: Hoare triple {4005#true} call ULTIMATE.init(); {4015#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-08 10:32:41,509 INFO L290 TraceCheckUtils]: 1: Hoare triple {4015#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(11, 2);call #Ultimate.allocInit(12, 3); {4005#true} is VALID [2022-04-08 10:32:41,509 INFO L290 TraceCheckUtils]: 2: Hoare triple {4005#true} assume true; {4005#true} is VALID [2022-04-08 10:32:41,509 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {4005#true} {4005#true} #44#return; {4005#true} is VALID [2022-04-08 10:32:41,509 INFO L272 TraceCheckUtils]: 4: Hoare triple {4005#true} call #t~ret6 := main(); {4005#true} is VALID [2022-04-08 10:32:41,510 INFO L290 TraceCheckUtils]: 5: Hoare triple {4005#true} ~a~0 := 6;~b~0 := 6;~a~0 := 0; {4010#(= main_~a~0 0)} is VALID [2022-04-08 10:32:41,510 INFO L290 TraceCheckUtils]: 6: Hoare triple {4010#(= main_~a~0 0)} assume !!(~a~0 < 6);~b~0 := 0; {4010#(= main_~a~0 0)} is VALID [2022-04-08 10:32:41,510 INFO L290 TraceCheckUtils]: 7: Hoare triple {4010#(= main_~a~0 0)} assume !!(~b~0 < 6); {4010#(= main_~a~0 0)} is VALID [2022-04-08 10:32:41,510 INFO L290 TraceCheckUtils]: 8: Hoare triple {4010#(= main_~a~0 0)} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {4010#(= main_~a~0 0)} is VALID [2022-04-08 10:32:41,510 INFO L290 TraceCheckUtils]: 9: Hoare triple {4010#(= main_~a~0 0)} assume !!(~b~0 < 6); {4010#(= main_~a~0 0)} is VALID [2022-04-08 10:32:41,511 INFO L290 TraceCheckUtils]: 10: Hoare triple {4010#(= main_~a~0 0)} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {4010#(= main_~a~0 0)} is VALID [2022-04-08 10:32:41,511 INFO L290 TraceCheckUtils]: 11: Hoare triple {4010#(= main_~a~0 0)} assume !!(~b~0 < 6); {4010#(= main_~a~0 0)} is VALID [2022-04-08 10:32:41,511 INFO L290 TraceCheckUtils]: 12: Hoare triple {4010#(= main_~a~0 0)} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {4010#(= main_~a~0 0)} is VALID [2022-04-08 10:32:41,511 INFO L290 TraceCheckUtils]: 13: Hoare triple {4010#(= main_~a~0 0)} assume !!(~b~0 < 6); {4010#(= main_~a~0 0)} is VALID [2022-04-08 10:32:41,512 INFO L290 TraceCheckUtils]: 14: Hoare triple {4010#(= main_~a~0 0)} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {4010#(= main_~a~0 0)} is VALID [2022-04-08 10:32:41,512 INFO L290 TraceCheckUtils]: 15: Hoare triple {4010#(= main_~a~0 0)} assume !!(~b~0 < 6); {4010#(= main_~a~0 0)} is VALID [2022-04-08 10:32:41,512 INFO L290 TraceCheckUtils]: 16: Hoare triple {4010#(= main_~a~0 0)} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {4010#(= main_~a~0 0)} is VALID [2022-04-08 10:32:41,512 INFO L290 TraceCheckUtils]: 17: Hoare triple {4010#(= main_~a~0 0)} assume !!(~b~0 < 6); {4010#(= main_~a~0 0)} is VALID [2022-04-08 10:32:41,513 INFO L290 TraceCheckUtils]: 18: Hoare triple {4010#(= main_~a~0 0)} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {4010#(= main_~a~0 0)} is VALID [2022-04-08 10:32:41,513 INFO L290 TraceCheckUtils]: 19: Hoare triple {4010#(= main_~a~0 0)} assume !(~b~0 < 6); {4010#(= main_~a~0 0)} is VALID [2022-04-08 10:32:41,513 INFO L290 TraceCheckUtils]: 20: Hoare triple {4010#(= main_~a~0 0)} #t~pre4 := 1 + ~a~0;~a~0 := 1 + ~a~0;havoc #t~pre4; {4011#(<= main_~a~0 1)} is VALID [2022-04-08 10:32:41,513 INFO L290 TraceCheckUtils]: 21: Hoare triple {4011#(<= main_~a~0 1)} assume !!(~a~0 < 6);~b~0 := 0; {4011#(<= main_~a~0 1)} is VALID [2022-04-08 10:32:41,514 INFO L290 TraceCheckUtils]: 22: Hoare triple {4011#(<= main_~a~0 1)} assume !!(~b~0 < 6); {4011#(<= main_~a~0 1)} is VALID [2022-04-08 10:32:41,514 INFO L290 TraceCheckUtils]: 23: Hoare triple {4011#(<= main_~a~0 1)} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {4011#(<= main_~a~0 1)} is VALID [2022-04-08 10:32:41,514 INFO L290 TraceCheckUtils]: 24: Hoare triple {4011#(<= main_~a~0 1)} assume !!(~b~0 < 6); {4011#(<= main_~a~0 1)} is VALID [2022-04-08 10:32:41,514 INFO L290 TraceCheckUtils]: 25: Hoare triple {4011#(<= main_~a~0 1)} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {4011#(<= main_~a~0 1)} is VALID [2022-04-08 10:32:41,515 INFO L290 TraceCheckUtils]: 26: Hoare triple {4011#(<= main_~a~0 1)} assume !!(~b~0 < 6); {4011#(<= main_~a~0 1)} is VALID [2022-04-08 10:32:41,515 INFO L290 TraceCheckUtils]: 27: Hoare triple {4011#(<= main_~a~0 1)} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {4011#(<= main_~a~0 1)} is VALID [2022-04-08 10:32:41,515 INFO L290 TraceCheckUtils]: 28: Hoare triple {4011#(<= main_~a~0 1)} assume !!(~b~0 < 6); {4011#(<= main_~a~0 1)} is VALID [2022-04-08 10:32:41,515 INFO L290 TraceCheckUtils]: 29: Hoare triple {4011#(<= main_~a~0 1)} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {4011#(<= main_~a~0 1)} is VALID [2022-04-08 10:32:41,516 INFO L290 TraceCheckUtils]: 30: Hoare triple {4011#(<= main_~a~0 1)} assume !!(~b~0 < 6); {4011#(<= main_~a~0 1)} is VALID [2022-04-08 10:32:41,516 INFO L290 TraceCheckUtils]: 31: Hoare triple {4011#(<= main_~a~0 1)} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {4011#(<= main_~a~0 1)} is VALID [2022-04-08 10:32:41,516 INFO L290 TraceCheckUtils]: 32: Hoare triple {4011#(<= main_~a~0 1)} assume !!(~b~0 < 6); {4011#(<= main_~a~0 1)} is VALID [2022-04-08 10:32:41,516 INFO L290 TraceCheckUtils]: 33: Hoare triple {4011#(<= main_~a~0 1)} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {4011#(<= main_~a~0 1)} is VALID [2022-04-08 10:32:41,516 INFO L290 TraceCheckUtils]: 34: Hoare triple {4011#(<= main_~a~0 1)} assume !(~b~0 < 6); {4011#(<= main_~a~0 1)} is VALID [2022-04-08 10:32:41,517 INFO L290 TraceCheckUtils]: 35: Hoare triple {4011#(<= main_~a~0 1)} #t~pre4 := 1 + ~a~0;~a~0 := 1 + ~a~0;havoc #t~pre4; {4012#(<= main_~a~0 2)} is VALID [2022-04-08 10:32:41,517 INFO L290 TraceCheckUtils]: 36: Hoare triple {4012#(<= main_~a~0 2)} assume !!(~a~0 < 6);~b~0 := 0; {4012#(<= main_~a~0 2)} is VALID [2022-04-08 10:32:41,517 INFO L290 TraceCheckUtils]: 37: Hoare triple {4012#(<= main_~a~0 2)} assume !!(~b~0 < 6); {4012#(<= main_~a~0 2)} is VALID [2022-04-08 10:32:41,518 INFO L290 TraceCheckUtils]: 38: Hoare triple {4012#(<= main_~a~0 2)} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {4012#(<= main_~a~0 2)} is VALID [2022-04-08 10:32:41,518 INFO L290 TraceCheckUtils]: 39: Hoare triple {4012#(<= main_~a~0 2)} assume !!(~b~0 < 6); {4012#(<= main_~a~0 2)} is VALID [2022-04-08 10:32:41,518 INFO L290 TraceCheckUtils]: 40: Hoare triple {4012#(<= main_~a~0 2)} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {4012#(<= main_~a~0 2)} is VALID [2022-04-08 10:32:41,518 INFO L290 TraceCheckUtils]: 41: Hoare triple {4012#(<= main_~a~0 2)} assume !!(~b~0 < 6); {4012#(<= main_~a~0 2)} is VALID [2022-04-08 10:32:41,519 INFO L290 TraceCheckUtils]: 42: Hoare triple {4012#(<= main_~a~0 2)} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {4012#(<= main_~a~0 2)} is VALID [2022-04-08 10:32:41,519 INFO L290 TraceCheckUtils]: 43: Hoare triple {4012#(<= main_~a~0 2)} assume !!(~b~0 < 6); {4012#(<= main_~a~0 2)} is VALID [2022-04-08 10:32:41,519 INFO L290 TraceCheckUtils]: 44: Hoare triple {4012#(<= main_~a~0 2)} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {4012#(<= main_~a~0 2)} is VALID [2022-04-08 10:32:41,519 INFO L290 TraceCheckUtils]: 45: Hoare triple {4012#(<= main_~a~0 2)} assume !!(~b~0 < 6); {4012#(<= main_~a~0 2)} is VALID [2022-04-08 10:32:41,519 INFO L290 TraceCheckUtils]: 46: Hoare triple {4012#(<= main_~a~0 2)} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {4012#(<= main_~a~0 2)} is VALID [2022-04-08 10:32:41,520 INFO L290 TraceCheckUtils]: 47: Hoare triple {4012#(<= main_~a~0 2)} assume !!(~b~0 < 6); {4012#(<= main_~a~0 2)} is VALID [2022-04-08 10:32:41,520 INFO L290 TraceCheckUtils]: 48: Hoare triple {4012#(<= main_~a~0 2)} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {4012#(<= main_~a~0 2)} is VALID [2022-04-08 10:32:41,520 INFO L290 TraceCheckUtils]: 49: Hoare triple {4012#(<= main_~a~0 2)} assume !(~b~0 < 6); {4012#(<= main_~a~0 2)} is VALID [2022-04-08 10:32:41,521 INFO L290 TraceCheckUtils]: 50: Hoare triple {4012#(<= main_~a~0 2)} #t~pre4 := 1 + ~a~0;~a~0 := 1 + ~a~0;havoc #t~pre4; {4013#(<= main_~a~0 3)} is VALID [2022-04-08 10:32:41,521 INFO L290 TraceCheckUtils]: 51: Hoare triple {4013#(<= main_~a~0 3)} assume !!(~a~0 < 6);~b~0 := 0; {4013#(<= main_~a~0 3)} is VALID [2022-04-08 10:32:41,521 INFO L290 TraceCheckUtils]: 52: Hoare triple {4013#(<= main_~a~0 3)} assume !!(~b~0 < 6); {4013#(<= main_~a~0 3)} is VALID [2022-04-08 10:32:41,521 INFO L290 TraceCheckUtils]: 53: Hoare triple {4013#(<= main_~a~0 3)} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {4013#(<= main_~a~0 3)} is VALID [2022-04-08 10:32:41,522 INFO L290 TraceCheckUtils]: 54: Hoare triple {4013#(<= main_~a~0 3)} assume !!(~b~0 < 6); {4013#(<= main_~a~0 3)} is VALID [2022-04-08 10:32:41,522 INFO L290 TraceCheckUtils]: 55: Hoare triple {4013#(<= main_~a~0 3)} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {4013#(<= main_~a~0 3)} is VALID [2022-04-08 10:32:41,522 INFO L290 TraceCheckUtils]: 56: Hoare triple {4013#(<= main_~a~0 3)} assume !!(~b~0 < 6); {4013#(<= main_~a~0 3)} is VALID [2022-04-08 10:32:41,522 INFO L290 TraceCheckUtils]: 57: Hoare triple {4013#(<= main_~a~0 3)} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {4013#(<= main_~a~0 3)} is VALID [2022-04-08 10:32:41,523 INFO L290 TraceCheckUtils]: 58: Hoare triple {4013#(<= main_~a~0 3)} assume !!(~b~0 < 6); {4013#(<= main_~a~0 3)} is VALID [2022-04-08 10:32:41,523 INFO L290 TraceCheckUtils]: 59: Hoare triple {4013#(<= main_~a~0 3)} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {4013#(<= main_~a~0 3)} is VALID [2022-04-08 10:32:41,523 INFO L290 TraceCheckUtils]: 60: Hoare triple {4013#(<= main_~a~0 3)} assume !!(~b~0 < 6); {4013#(<= main_~a~0 3)} is VALID [2022-04-08 10:32:41,523 INFO L290 TraceCheckUtils]: 61: Hoare triple {4013#(<= main_~a~0 3)} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {4013#(<= main_~a~0 3)} is VALID [2022-04-08 10:32:41,523 INFO L290 TraceCheckUtils]: 62: Hoare triple {4013#(<= main_~a~0 3)} assume !!(~b~0 < 6); {4013#(<= main_~a~0 3)} is VALID [2022-04-08 10:32:41,524 INFO L290 TraceCheckUtils]: 63: Hoare triple {4013#(<= main_~a~0 3)} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {4013#(<= main_~a~0 3)} is VALID [2022-04-08 10:32:41,524 INFO L290 TraceCheckUtils]: 64: Hoare triple {4013#(<= main_~a~0 3)} assume !(~b~0 < 6); {4013#(<= main_~a~0 3)} is VALID [2022-04-08 10:32:41,524 INFO L290 TraceCheckUtils]: 65: Hoare triple {4013#(<= main_~a~0 3)} #t~pre4 := 1 + ~a~0;~a~0 := 1 + ~a~0;havoc #t~pre4; {4014#(<= main_~a~0 4)} is VALID [2022-04-08 10:32:41,525 INFO L290 TraceCheckUtils]: 66: Hoare triple {4014#(<= main_~a~0 4)} assume !(~a~0 < 6); {4006#false} is VALID [2022-04-08 10:32:41,525 INFO L290 TraceCheckUtils]: 67: Hoare triple {4006#false} assume !(6 == ~a~0 && 6 == ~b~0); {4006#false} is VALID [2022-04-08 10:32:41,525 INFO L290 TraceCheckUtils]: 68: Hoare triple {4006#false} assume !false; {4006#false} is VALID [2022-04-08 10:32:41,525 INFO L134 CoverageAnalysis]: Checked inductivity of 670 backedges. 0 proven. 526 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2022-04-08 10:32:41,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-08 10:32:41,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789310732] [2022-04-08 10:32:41,525 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789310732] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-08 10:32:41,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [323545565] [2022-04-08 10:32:41,525 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-04-08 10:32:41,526 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-08 10:32:41,526 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-08 10:32:41,526 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-08 10:32:41,530 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-04-08 10:32:41,586 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 18 check-sat command(s) [2022-04-08 10:32:41,586 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-08 10:32:41,587 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 7 conjunts are in the unsatisfiable core [2022-04-08 10:32:41,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 10:32:41,598 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-08 10:32:41,942 INFO L272 TraceCheckUtils]: 0: Hoare triple {4005#true} call ULTIMATE.init(); {4005#true} is VALID [2022-04-08 10:32:41,942 INFO L290 TraceCheckUtils]: 1: Hoare triple {4005#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(11, 2);call #Ultimate.allocInit(12, 3); {4005#true} is VALID [2022-04-08 10:32:41,942 INFO L290 TraceCheckUtils]: 2: Hoare triple {4005#true} assume true; {4005#true} is VALID [2022-04-08 10:32:41,942 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {4005#true} {4005#true} #44#return; {4005#true} is VALID [2022-04-08 10:32:41,942 INFO L272 TraceCheckUtils]: 4: Hoare triple {4005#true} call #t~ret6 := main(); {4005#true} is VALID [2022-04-08 10:32:41,942 INFO L290 TraceCheckUtils]: 5: Hoare triple {4005#true} ~a~0 := 6;~b~0 := 6;~a~0 := 0; {4005#true} is VALID [2022-04-08 10:32:41,942 INFO L290 TraceCheckUtils]: 6: Hoare triple {4005#true} assume !!(~a~0 < 6);~b~0 := 0; {4005#true} is VALID [2022-04-08 10:32:41,942 INFO L290 TraceCheckUtils]: 7: Hoare triple {4005#true} assume !!(~b~0 < 6); {4005#true} is VALID [2022-04-08 10:32:41,942 INFO L290 TraceCheckUtils]: 8: Hoare triple {4005#true} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {4005#true} is VALID [2022-04-08 10:32:41,942 INFO L290 TraceCheckUtils]: 9: Hoare triple {4005#true} assume !!(~b~0 < 6); {4005#true} is VALID [2022-04-08 10:32:41,943 INFO L290 TraceCheckUtils]: 10: Hoare triple {4005#true} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {4005#true} is VALID [2022-04-08 10:32:41,943 INFO L290 TraceCheckUtils]: 11: Hoare triple {4005#true} assume !!(~b~0 < 6); {4005#true} is VALID [2022-04-08 10:32:41,943 INFO L290 TraceCheckUtils]: 12: Hoare triple {4005#true} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {4005#true} is VALID [2022-04-08 10:32:41,943 INFO L290 TraceCheckUtils]: 13: Hoare triple {4005#true} assume !!(~b~0 < 6); {4005#true} is VALID [2022-04-08 10:32:41,943 INFO L290 TraceCheckUtils]: 14: Hoare triple {4005#true} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {4005#true} is VALID [2022-04-08 10:32:41,943 INFO L290 TraceCheckUtils]: 15: Hoare triple {4005#true} assume !!(~b~0 < 6); {4005#true} is VALID [2022-04-08 10:32:41,943 INFO L290 TraceCheckUtils]: 16: Hoare triple {4005#true} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {4005#true} is VALID [2022-04-08 10:32:41,943 INFO L290 TraceCheckUtils]: 17: Hoare triple {4005#true} assume !!(~b~0 < 6); {4005#true} is VALID [2022-04-08 10:32:41,943 INFO L290 TraceCheckUtils]: 18: Hoare triple {4005#true} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {4005#true} is VALID [2022-04-08 10:32:41,943 INFO L290 TraceCheckUtils]: 19: Hoare triple {4005#true} assume !(~b~0 < 6); {4005#true} is VALID [2022-04-08 10:32:41,943 INFO L290 TraceCheckUtils]: 20: Hoare triple {4005#true} #t~pre4 := 1 + ~a~0;~a~0 := 1 + ~a~0;havoc #t~pre4; {4005#true} is VALID [2022-04-08 10:32:41,943 INFO L290 TraceCheckUtils]: 21: Hoare triple {4005#true} assume !!(~a~0 < 6);~b~0 := 0; {4005#true} is VALID [2022-04-08 10:32:41,943 INFO L290 TraceCheckUtils]: 22: Hoare triple {4005#true} assume !!(~b~0 < 6); {4005#true} is VALID [2022-04-08 10:32:41,943 INFO L290 TraceCheckUtils]: 23: Hoare triple {4005#true} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {4005#true} is VALID [2022-04-08 10:32:41,943 INFO L290 TraceCheckUtils]: 24: Hoare triple {4005#true} assume !!(~b~0 < 6); {4005#true} is VALID [2022-04-08 10:32:41,943 INFO L290 TraceCheckUtils]: 25: Hoare triple {4005#true} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {4005#true} is VALID [2022-04-08 10:32:41,943 INFO L290 TraceCheckUtils]: 26: Hoare triple {4005#true} assume !!(~b~0 < 6); {4005#true} is VALID [2022-04-08 10:32:41,944 INFO L290 TraceCheckUtils]: 27: Hoare triple {4005#true} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {4005#true} is VALID [2022-04-08 10:32:41,944 INFO L290 TraceCheckUtils]: 28: Hoare triple {4005#true} assume !!(~b~0 < 6); {4005#true} is VALID [2022-04-08 10:32:41,944 INFO L290 TraceCheckUtils]: 29: Hoare triple {4005#true} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {4005#true} is VALID [2022-04-08 10:32:41,944 INFO L290 TraceCheckUtils]: 30: Hoare triple {4005#true} assume !!(~b~0 < 6); {4005#true} is VALID [2022-04-08 10:32:41,944 INFO L290 TraceCheckUtils]: 31: Hoare triple {4005#true} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {4005#true} is VALID [2022-04-08 10:32:41,944 INFO L290 TraceCheckUtils]: 32: Hoare triple {4005#true} assume !!(~b~0 < 6); {4005#true} is VALID [2022-04-08 10:32:41,944 INFO L290 TraceCheckUtils]: 33: Hoare triple {4005#true} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {4005#true} is VALID [2022-04-08 10:32:41,944 INFO L290 TraceCheckUtils]: 34: Hoare triple {4005#true} assume !(~b~0 < 6); {4005#true} is VALID [2022-04-08 10:32:41,944 INFO L290 TraceCheckUtils]: 35: Hoare triple {4005#true} #t~pre4 := 1 + ~a~0;~a~0 := 1 + ~a~0;havoc #t~pre4; {4005#true} is VALID [2022-04-08 10:32:41,944 INFO L290 TraceCheckUtils]: 36: Hoare triple {4005#true} assume !!(~a~0 < 6);~b~0 := 0; {4005#true} is VALID [2022-04-08 10:32:41,944 INFO L290 TraceCheckUtils]: 37: Hoare triple {4005#true} assume !!(~b~0 < 6); {4005#true} is VALID [2022-04-08 10:32:41,944 INFO L290 TraceCheckUtils]: 38: Hoare triple {4005#true} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {4005#true} is VALID [2022-04-08 10:32:41,944 INFO L290 TraceCheckUtils]: 39: Hoare triple {4005#true} assume !!(~b~0 < 6); {4005#true} is VALID [2022-04-08 10:32:41,944 INFO L290 TraceCheckUtils]: 40: Hoare triple {4005#true} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {4005#true} is VALID [2022-04-08 10:32:41,945 INFO L290 TraceCheckUtils]: 41: Hoare triple {4005#true} assume !!(~b~0 < 6); {4005#true} is VALID [2022-04-08 10:32:41,945 INFO L290 TraceCheckUtils]: 42: Hoare triple {4005#true} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {4005#true} is VALID [2022-04-08 10:32:41,945 INFO L290 TraceCheckUtils]: 43: Hoare triple {4005#true} assume !!(~b~0 < 6); {4005#true} is VALID [2022-04-08 10:32:41,945 INFO L290 TraceCheckUtils]: 44: Hoare triple {4005#true} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {4005#true} is VALID [2022-04-08 10:32:41,945 INFO L290 TraceCheckUtils]: 45: Hoare triple {4005#true} assume !!(~b~0 < 6); {4005#true} is VALID [2022-04-08 10:32:41,945 INFO L290 TraceCheckUtils]: 46: Hoare triple {4005#true} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {4005#true} is VALID [2022-04-08 10:32:41,945 INFO L290 TraceCheckUtils]: 47: Hoare triple {4005#true} assume !!(~b~0 < 6); {4005#true} is VALID [2022-04-08 10:32:41,945 INFO L290 TraceCheckUtils]: 48: Hoare triple {4005#true} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {4005#true} is VALID [2022-04-08 10:32:41,945 INFO L290 TraceCheckUtils]: 49: Hoare triple {4005#true} assume !(~b~0 < 6); {4005#true} is VALID [2022-04-08 10:32:41,945 INFO L290 TraceCheckUtils]: 50: Hoare triple {4005#true} #t~pre4 := 1 + ~a~0;~a~0 := 1 + ~a~0;havoc #t~pre4; {4005#true} is VALID [2022-04-08 10:32:41,945 INFO L290 TraceCheckUtils]: 51: Hoare triple {4005#true} assume !!(~a~0 < 6);~b~0 := 0; {4172#(< main_~a~0 6)} is VALID [2022-04-08 10:32:41,946 INFO L290 TraceCheckUtils]: 52: Hoare triple {4172#(< main_~a~0 6)} assume !!(~b~0 < 6); {4172#(< main_~a~0 6)} is VALID [2022-04-08 10:32:41,946 INFO L290 TraceCheckUtils]: 53: Hoare triple {4172#(< main_~a~0 6)} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {4172#(< main_~a~0 6)} is VALID [2022-04-08 10:32:41,946 INFO L290 TraceCheckUtils]: 54: Hoare triple {4172#(< main_~a~0 6)} assume !!(~b~0 < 6); {4172#(< main_~a~0 6)} is VALID [2022-04-08 10:32:41,946 INFO L290 TraceCheckUtils]: 55: Hoare triple {4172#(< main_~a~0 6)} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {4172#(< main_~a~0 6)} is VALID [2022-04-08 10:32:41,947 INFO L290 TraceCheckUtils]: 56: Hoare triple {4172#(< main_~a~0 6)} assume !!(~b~0 < 6); {4172#(< main_~a~0 6)} is VALID [2022-04-08 10:32:41,947 INFO L290 TraceCheckUtils]: 57: Hoare triple {4172#(< main_~a~0 6)} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {4172#(< main_~a~0 6)} is VALID [2022-04-08 10:32:41,947 INFO L290 TraceCheckUtils]: 58: Hoare triple {4172#(< main_~a~0 6)} assume !!(~b~0 < 6); {4172#(< main_~a~0 6)} is VALID [2022-04-08 10:32:41,948 INFO L290 TraceCheckUtils]: 59: Hoare triple {4172#(< main_~a~0 6)} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {4172#(< main_~a~0 6)} is VALID [2022-04-08 10:32:41,948 INFO L290 TraceCheckUtils]: 60: Hoare triple {4172#(< main_~a~0 6)} assume !!(~b~0 < 6); {4172#(< main_~a~0 6)} is VALID [2022-04-08 10:32:41,948 INFO L290 TraceCheckUtils]: 61: Hoare triple {4172#(< main_~a~0 6)} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {4172#(< main_~a~0 6)} is VALID [2022-04-08 10:32:41,948 INFO L290 TraceCheckUtils]: 62: Hoare triple {4172#(< main_~a~0 6)} assume !!(~b~0 < 6); {4206#(and (< main_~b~0 6) (< main_~a~0 6))} is VALID [2022-04-08 10:32:41,949 INFO L290 TraceCheckUtils]: 63: Hoare triple {4206#(and (< main_~b~0 6) (< main_~a~0 6))} #t~pre5 := 1 + ~b~0;~b~0 := 1 + ~b~0;havoc #t~pre5; {4210#(and (< main_~b~0 7) (< main_~a~0 6))} is VALID [2022-04-08 10:32:41,949 INFO L290 TraceCheckUtils]: 64: Hoare triple {4210#(and (< main_~b~0 7) (< main_~a~0 6))} assume !(~b~0 < 6); {4214#(and (< main_~b~0 7) (< main_~a~0 6) (not (< main_~b~0 6)))} is VALID [2022-04-08 10:32:41,950 INFO L290 TraceCheckUtils]: 65: Hoare triple {4214#(and (< main_~b~0 7) (< main_~a~0 6) (not (< main_~b~0 6)))} #t~pre4 := 1 + ~a~0;~a~0 := 1 + ~a~0;havoc #t~pre4; {4218#(and (< main_~a~0 7) (< main_~b~0 7) (not (< main_~b~0 6)))} is VALID [2022-04-08 10:32:41,950 INFO L290 TraceCheckUtils]: 66: Hoare triple {4218#(and (< main_~a~0 7) (< main_~b~0 7) (not (< main_~b~0 6)))} assume !(~a~0 < 6); {4222#(and (< main_~a~0 7) (< main_~b~0 7) (not (< main_~b~0 6)) (not (< main_~a~0 6)))} is VALID [2022-04-08 10:32:41,950 INFO L290 TraceCheckUtils]: 67: Hoare triple {4222#(and (< main_~a~0 7) (< main_~b~0 7) (not (< main_~b~0 6)) (not (< main_~a~0 6)))} assume !(6 == ~a~0 && 6 == ~b~0); {4006#false} is VALID [2022-04-08 10:32:41,950 INFO L290 TraceCheckUtils]: 68: Hoare triple {4006#false} assume !false; {4006#false} is VALID [2022-04-08 10:32:41,953 INFO L134 CoverageAnalysis]: Checked inductivity of 670 backedges. 273 proven. 0 refuted. 0 times theorem prover too weak. 397 trivial. 0 not checked. [2022-04-08 10:32:41,953 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-08 10:32:41,953 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [323545565] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-08 10:32:41,953 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-08 10:32:41,953 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 14 [2022-04-08 10:32:41,954 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-08 10:32:41,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [755869282] [2022-04-08 10:32:41,954 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [755869282] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-08 10:32:41,954 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-08 10:32:41,954 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-04-08 10:32:41,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570843581] [2022-04-08 10:32:41,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-08 10:32:41,955 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 1 states have call successors, (2), 1 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 69 [2022-04-08 10:32:41,955 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-08 10:32:41,955 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 10:32:41,966 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 21 edges. 21 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 10:32:41,966 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-04-08 10:32:41,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-08 10:32:41,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-04-08 10:32:41,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2022-04-08 10:32:41,967 INFO L87 Difference]: Start difference. First operand 70 states and 74 transitions. Second operand has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 10:32:42,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 10:32:42,165 INFO L93 Difference]: Finished difference Result 70 states and 74 transitions. [2022-04-08 10:32:42,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-04-08 10:32:42,165 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 1 states have call successors, (2), 1 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 69 [2022-04-08 10:32:42,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-08 10:32:42,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 10:32:42,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 16 transitions. [2022-04-08 10:32:42,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 10:32:42,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 16 transitions. [2022-04-08 10:32:42,167 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 7 states and 16 transitions. [2022-04-08 10:32:42,178 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 16 edges. 16 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 10:32:42,178 INFO L225 Difference]: With dead ends: 70 [2022-04-08 10:32:42,178 INFO L226 Difference]: Without dead ends: 0 [2022-04-08 10:32:42,179 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2022-04-08 10:32:42,179 INFO L913 BasicCegarLoop]: 6 mSDtfsCounter, 4 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-08 10:32:42,179 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 31 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-08 10:32:42,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-04-08 10:32:42,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-04-08 10:32:42,180 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-08 10:32:42,180 INFO L82 GeneralOperation]: Start isEquivalent. First operand 0 states. Second 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) [2022-04-08 10:32:42,180 INFO L74 IsIncluded]: Start isIncluded. First operand 0 states. Second 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) [2022-04-08 10:32:42,180 INFO L87 Difference]: Start difference. First operand 0 states. Second 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) [2022-04-08 10:32:42,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 10:32:42,180 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2022-04-08 10:32:42,180 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-04-08 10:32:42,180 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 10:32:42,180 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 10:32:42,180 INFO L74 IsIncluded]: Start isIncluded. First 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) Second operand 0 states. [2022-04-08 10:32:42,180 INFO L87 Difference]: Start difference. First 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) Second operand 0 states. [2022-04-08 10:32:42,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 10:32:42,180 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2022-04-08 10:32:42,180 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-04-08 10:32:42,180 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 10:32:42,180 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 10:32:42,180 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-08 10:32:42,180 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-08 10:32:42,180 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) [2022-04-08 10:32:42,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-04-08 10:32:42,181 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 69 [2022-04-08 10:32:42,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-08 10:32:42,181 INFO L478 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-04-08 10:32:42,181 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 10:32:42,181 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 0 states and 0 transitions. [2022-04-08 10:32:42,181 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 0 edges. 0 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 10:32:42,181 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-04-08 10:32:42,181 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 10:32:42,183 INFO L788 garLoopResultBuilder]: Registering result SAFE for location mainErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-04-08 10:32:42,200 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-04-08 10:32:42,403 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-08 10:32:42,405 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-04-08 10:32:43,301 INFO L882 garLoopResultBuilder]: For program point reach_errorEXIT(line 13) no Hoare annotation was computed. [2022-04-08 10:32:43,301 INFO L882 garLoopResultBuilder]: For program point reach_errorENTRY(line 13) no Hoare annotation was computed. [2022-04-08 10:32:43,301 INFO L882 garLoopResultBuilder]: For program point reach_errorFINAL(line 13) no Hoare annotation was computed. [2022-04-08 10:32:43,301 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2022-04-08 10:32:43,301 INFO L878 garLoopResultBuilder]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|)) [2022-04-08 10:32:43,301 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2022-04-08 10:32:43,301 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2022-04-08 10:32:43,302 INFO L885 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: true [2022-04-08 10:32:43,302 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2022-04-08 10:32:43,302 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2022-04-08 10:32:43,302 INFO L885 garLoopResultBuilder]: At program point mainEXIT(lines 15 29) the Hoare annotation is: true [2022-04-08 10:32:43,302 INFO L885 garLoopResultBuilder]: At program point L25-1(lines 25 27) the Hoare annotation is: true [2022-04-08 10:32:43,302 INFO L878 garLoopResultBuilder]: At program point L21-2(lines 21 23) the Hoare annotation is: (and (<= main_~b~0 5) (< main_~a~0 6)) [2022-04-08 10:32:43,302 INFO L878 garLoopResultBuilder]: At program point L21-3(lines 21 23) the Hoare annotation is: (and (< main_~b~0 7) (< main_~a~0 6)) [2022-04-08 10:32:43,302 INFO L885 garLoopResultBuilder]: At program point mainFINAL(lines 15 29) the Hoare annotation is: true [2022-04-08 10:32:43,302 INFO L878 garLoopResultBuilder]: At program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 26) the Hoare annotation is: false [2022-04-08 10:32:43,302 INFO L885 garLoopResultBuilder]: At program point mainENTRY(lines 15 29) the Hoare annotation is: true [2022-04-08 10:32:43,302 INFO L878 garLoopResultBuilder]: At program point L26(line 26) the Hoare annotation is: false [2022-04-08 10:32:43,302 INFO L878 garLoopResultBuilder]: At program point L20-2(lines 20 24) the Hoare annotation is: (and (< main_~b~0 7) (< main_~a~0 6) (not (< main_~b~0 6))) [2022-04-08 10:32:43,302 INFO L878 garLoopResultBuilder]: At program point L20-3(lines 20 24) the Hoare annotation is: (and (< main_~a~0 7) (< main_~b~0 7) (not (< main_~b~0 6))) [2022-04-08 10:32:43,302 INFO L878 garLoopResultBuilder]: At program point L20-4(lines 15 29) the Hoare annotation is: (and (< main_~a~0 7) (< main_~b~0 7) (not (< main_~b~0 6)) (not (< main_~a~0 6))) [2022-04-08 10:32:43,304 INFO L719 BasicCegarLoop]: Path program histogram: [18, 2, 2] [2022-04-08 10:32:43,305 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-04-08 10:32:43,313 WARN L170 areAnnotationChecker]: reach_errorENTRY has no Hoare annotation [2022-04-08 10:32:43,315 WARN L170 areAnnotationChecker]: reach_errorFINAL has no Hoare annotation [2022-04-08 10:32:43,323 INFO L163 areAnnotationChecker]: CFG has 22 edges. 22 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. 0 times interpolants missing. [2022-04-08 10:32:43,328 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.04 10:32:43 BoogieIcfgContainer [2022-04-08 10:32:43,328 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-04-08 10:32:43,329 INFO L158 Benchmark]: Toolchain (without parser) took 10637.82ms. Allocated memory was 190.8MB in the beginning and 275.8MB in the end (delta: 84.9MB). Free memory was 142.3MB in the beginning and 254.4MB in the end (delta: -112.1MB). Peak memory consumption was 135.1MB. Max. memory is 8.0GB. [2022-04-08 10:32:43,329 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 190.8MB. Free memory is still 158.3MB. There was no memory consumed. Max. memory is 8.0GB. [2022-04-08 10:32:43,330 INFO L158 Benchmark]: CACSL2BoogieTranslator took 159.59ms. Allocated memory is still 190.8MB. Free memory was 141.9MB in the beginning and 169.2MB in the end (delta: -27.3MB). Peak memory consumption was 13.9MB. Max. memory is 8.0GB. [2022-04-08 10:32:43,330 INFO L158 Benchmark]: Boogie Preprocessor took 23.01ms. Allocated memory is still 190.8MB. Free memory was 169.2MB in the beginning and 167.7MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-04-08 10:32:43,330 INFO L158 Benchmark]: RCFGBuilder took 207.67ms. Allocated memory is still 190.8MB. Free memory was 167.6MB in the beginning and 158.0MB in the end (delta: 9.6MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2022-04-08 10:32:43,330 INFO L158 Benchmark]: TraceAbstraction took 10233.08ms. Allocated memory was 190.8MB in the beginning and 275.8MB in the end (delta: 84.9MB). Free memory was 157.7MB in the beginning and 254.4MB in the end (delta: -96.7MB). Peak memory consumption was 150.6MB. Max. memory is 8.0GB. [2022-04-08 10:32:43,331 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 190.8MB. Free memory is still 158.3MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 159.59ms. Allocated memory is still 190.8MB. Free memory was 141.9MB in the beginning and 169.2MB in the end (delta: -27.3MB). Peak memory consumption was 13.9MB. Max. memory is 8.0GB. * Boogie Preprocessor took 23.01ms. Allocated memory is still 190.8MB. Free memory was 169.2MB in the beginning and 167.7MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 207.67ms. Allocated memory is still 190.8MB. Free memory was 167.6MB in the beginning and 158.0MB in the end (delta: 9.6MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * TraceAbstraction took 10233.08ms. Allocated memory was 190.8MB in the beginning and 275.8MB in the end (delta: 84.9MB). Free memory was 157.7MB in the beginning and 254.4MB in the end (delta: -96.7MB). Peak memory consumption was 150.6MB. 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: 26]: 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, 21 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 10.2s, OverallIterations: 11, TraceHistogramMax: 24, PathProgramHistogramMax: 18, EmptinessCheckTime: 0.0s, AutomataDifference: 1.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.9s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 218 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 218 mSDsluCounter, 288 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 157 mSDsCounter, 56 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 258 IncrementalHoareTripleChecker+Invalid, 314 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 56 mSolverCounterUnsat, 131 mSDtfsCounter, 258 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 651 GetRequests, 531 SyntacticMatches, 3 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=70occurred in iteration=10, InterpolantAutomatonStates: 68, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 11 MinimizatonAttempts, 45 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 18 LocationsWithAnnotation, 18 PreInvPairs, 85 NumberOfFragments, 70 HoareAnnotationTreeSize, 18 FomulaSimplifications, 217 FormulaSimplificationTreeSizeReduction, 0.7s HoareSimplificationTime, 18 FomulaSimplificationsInter, 1257 FormulaSimplificationTreeSizeReductionInter, 0.2s 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: 21]: Loop Invariant Derived loop invariant: b < 7 && a < 6 - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: (a < 7 && b < 7) && !(b < 6) - ProcedureContractResult [Line: 15]: Procedure Contract for main Derived contract for procedure main: 1 RESULT: Ultimate proved your program to be correct! [2022-04-08 10:32:43,357 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...