/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-invgen/fragtest_simple.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-e106359-m [2022-04-15 12:30:30,069 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-15 12:30:30,070 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-15 12:30:30,095 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-04-15 12:30:30,134 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-15 12:30:30,135 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-15 12:30:30,138 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-15 12:30:30,139 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationQvasr_64.epf [2022-04-15 12:30:30,147 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-15 12:30:30,148 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-15 12:30:30,148 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-15 12:30:30,149 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-15 12:30:30,149 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-15 12:30:30,149 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-15 12:30:30,149 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-15 12:30:30,149 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-15 12:30:30,149 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-15 12:30:30,150 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-15 12:30:30,150 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-15 12:30:30,150 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-15 12:30:30,150 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-15 12:30:30,150 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-04-15 12:30:30,150 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-15 12:30:30,150 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-15 12:30:30,150 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-15 12:30:30,151 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2022-04-15 12:30:30,151 INFO L138 SettingsManager]: * Trace refinement strategy=ACCELERATED_INTERPOLATION [2022-04-15 12:30:30,151 INFO L138 SettingsManager]: * Trace refinement strategy used in Accelerated Interpolation=CAMEL [2022-04-15 12:30:30,151 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-15 12:30:30,151 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=QVASR [2022-04-15 12:30:30,151 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-04-15 12:30:30,320 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-15 12:30:30,337 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-15 12:30:30,339 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-15 12:30:30,340 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-15 12:30:30,343 INFO L275 PluginConnector]: CDTParser initialized [2022-04-15 12:30:30,344 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/fragtest_simple.i [2022-04-15 12:30:30,396 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c107d1a8/33b4294517f24b7d90e2dd500910cf00/FLAG9cf85a863 [2022-04-15 12:30:30,768 INFO L306 CDTParser]: Found 1 translation units. [2022-04-15 12:30:30,769 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/fragtest_simple.i [2022-04-15 12:30:30,773 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c107d1a8/33b4294517f24b7d90e2dd500910cf00/FLAG9cf85a863 [2022-04-15 12:30:30,782 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c107d1a8/33b4294517f24b7d90e2dd500910cf00 [2022-04-15 12:30:30,784 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-15 12:30:30,785 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-04-15 12:30:30,786 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-15 12:30:30,786 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-15 12:30:30,788 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-15 12:30:30,789 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.04 12:30:30" (1/1) ... [2022-04-15 12:30:30,789 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3af1b5c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 12:30:30, skipping insertion in model container [2022-04-15 12:30:30,789 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.04 12:30:30" (1/1) ... [2022-04-15 12:30:30,794 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-15 12:30:30,803 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-15 12:30:30,926 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-invgen/fragtest_simple.i[893,906] [2022-04-15 12:30:30,936 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-15 12:30:30,956 INFO L203 MainTranslator]: Completed pre-run [2022-04-15 12:30:30,964 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-invgen/fragtest_simple.i[893,906] [2022-04-15 12:30:30,970 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-15 12:30:30,980 INFO L208 MainTranslator]: Completed translation [2022-04-15 12:30:30,980 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 12:30:30 WrapperNode [2022-04-15 12:30:30,980 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-15 12:30:30,982 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-15 12:30:30,982 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-15 12:30:30,982 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-15 12:30:30,990 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 12:30:30" (1/1) ... [2022-04-15 12:30:30,990 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 12:30:30" (1/1) ... [2022-04-15 12:30:30,996 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 12:30:30" (1/1) ... [2022-04-15 12:30:30,996 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 12:30:30" (1/1) ... [2022-04-15 12:30:31,000 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 12:30:30" (1/1) ... [2022-04-15 12:30:31,004 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 12:30:30" (1/1) ... [2022-04-15 12:30:31,008 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 12:30:30" (1/1) ... [2022-04-15 12:30:31,009 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-15 12:30:31,010 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-15 12:30:31,010 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-15 12:30:31,010 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-15 12:30:31,011 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 12:30:30" (1/1) ... [2022-04-15 12:30:31,021 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-15 12:30:31,027 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-15 12:30:31,037 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) [2022-04-15 12:30:31,039 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 [2022-04-15 12:30:31,063 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-04-15 12:30:31,063 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-15 12:30:31,064 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-04-15 12:30:31,064 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-04-15 12:30:31,064 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-04-15 12:30:31,065 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-04-15 12:30:31,065 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-04-15 12:30:31,065 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-04-15 12:30:31,065 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2022-04-15 12:30:31,065 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2022-04-15 12:30:31,065 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-04-15 12:30:31,065 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-15 12:30:31,065 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-04-15 12:30:31,066 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-04-15 12:30:31,066 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-04-15 12:30:31,068 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-04-15 12:30:31,068 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-04-15 12:30:31,068 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-15 12:30:31,068 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-15 12:30:31,068 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-15 12:30:31,068 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-15 12:30:31,068 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-15 12:30:31,116 INFO L234 CfgBuilder]: Building ICFG [2022-04-15 12:30:31,117 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-15 12:30:31,229 INFO L275 CfgBuilder]: Performing block encoding [2022-04-15 12:30:31,234 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-15 12:30:31,234 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-04-15 12:30:31,236 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.04 12:30:31 BoogieIcfgContainer [2022-04-15 12:30:31,236 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-15 12:30:31,237 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-15 12:30:31,237 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-15 12:30:31,240 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-15 12:30:31,240 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.04 12:30:30" (1/3) ... [2022-04-15 12:30:31,251 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2791266d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.04 12:30:31, skipping insertion in model container [2022-04-15 12:30:31,251 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 12:30:30" (2/3) ... [2022-04-15 12:30:31,251 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2791266d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.04 12:30:31, skipping insertion in model container [2022-04-15 12:30:31,251 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.04 12:30:31" (3/3) ... [2022-04-15 12:30:31,267 INFO L111 eAbstractionObserver]: Analyzing ICFG fragtest_simple.i [2022-04-15 12:30:31,271 INFO L202 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-04-15 12:30:31,271 INFO L161 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-04-15 12:30:31,299 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-15 12:30:31,305 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 [2022-04-15 12:30:31,306 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-04-15 12:30:31,318 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 20 states have (on average 1.5) internal successors, (30), 21 states have internal predecessors, (30), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-15 12:30:31,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-04-15 12:30:31,323 INFO L491 BasicCegarLoop]: Found error trace [2022-04-15 12:30:31,324 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-15 12:30:31,324 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-15 12:30:31,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-15 12:30:31,328 INFO L85 PathProgramCache]: Analyzing trace with hash -1613859161, now seen corresponding path program 1 times [2022-04-15 12:30:31,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-15 12:30:31,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [2115120392] [2022-04-15 12:30:31,341 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-15 12:30:31,341 INFO L85 PathProgramCache]: Analyzing trace with hash -1613859161, now seen corresponding path program 2 times [2022-04-15 12:30:31,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-15 12:30:31,344 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468019369] [2022-04-15 12:30:31,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-15 12:30:31,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-15 12:30:31,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 12:30:31,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-15 12:30:31,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 12:30:31,528 INFO L290 TraceCheckUtils]: 0: Hoare triple {36#(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(9, 2); {31#true} is VALID [2022-04-15 12:30:31,528 INFO L290 TraceCheckUtils]: 1: Hoare triple {31#true} assume true; {31#true} is VALID [2022-04-15 12:30:31,528 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {31#true} {31#true} #90#return; {31#true} is VALID [2022-04-15 12:30:31,530 INFO L272 TraceCheckUtils]: 0: Hoare triple {31#true} call ULTIMATE.init(); {36#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-15 12:30:31,530 INFO L290 TraceCheckUtils]: 1: Hoare triple {36#(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(9, 2); {31#true} is VALID [2022-04-15 12:30:31,530 INFO L290 TraceCheckUtils]: 2: Hoare triple {31#true} assume true; {31#true} is VALID [2022-04-15 12:30:31,530 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {31#true} {31#true} #90#return; {31#true} is VALID [2022-04-15 12:30:31,531 INFO L272 TraceCheckUtils]: 4: Hoare triple {31#true} call #t~ret4 := main(); {31#true} is VALID [2022-04-15 12:30:31,531 INFO L290 TraceCheckUtils]: 5: Hoare triple {31#true} havoc ~i~0;havoc ~pvlen~0;havoc ~tmp___1~0;~k~0 := 0;havoc ~n~0;~i~0 := 0;assume -2147483648 <= #t~nondet1 && #t~nondet1 <= 2147483647;~pvlen~0 := #t~nondet1;havoc #t~nondet1; {31#true} is VALID [2022-04-15 12:30:31,531 INFO L290 TraceCheckUtils]: 6: Hoare triple {31#true} assume !true; {32#false} is VALID [2022-04-15 12:30:31,532 INFO L290 TraceCheckUtils]: 7: Hoare triple {32#false} assume !(~i~0 > ~pvlen~0); {32#false} is VALID [2022-04-15 12:30:31,532 INFO L290 TraceCheckUtils]: 8: Hoare triple {32#false} ~i~0 := 0; {32#false} is VALID [2022-04-15 12:30:31,532 INFO L290 TraceCheckUtils]: 9: Hoare triple {32#false} assume !true; {32#false} is VALID [2022-04-15 12:30:31,532 INFO L290 TraceCheckUtils]: 10: Hoare triple {32#false} ~j~0 := 0;~n~0 := ~i~0; {32#false} is VALID [2022-04-15 12:30:31,532 INFO L290 TraceCheckUtils]: 11: Hoare triple {32#false} assume !false; {32#false} is VALID [2022-04-15 12:30:31,533 INFO L272 TraceCheckUtils]: 12: Hoare triple {32#false} call __VERIFIER_assert((if ~k~0 >= 0 then 1 else 0)); {32#false} is VALID [2022-04-15 12:30:31,533 INFO L290 TraceCheckUtils]: 13: Hoare triple {32#false} ~cond := #in~cond; {32#false} is VALID [2022-04-15 12:30:31,533 INFO L290 TraceCheckUtils]: 14: Hoare triple {32#false} assume 0 == ~cond; {32#false} is VALID [2022-04-15 12:30:31,533 INFO L290 TraceCheckUtils]: 15: Hoare triple {32#false} assume !false; {32#false} is VALID [2022-04-15 12:30:31,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-15 12:30:31,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-15 12:30:31,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468019369] [2022-04-15 12:30:31,535 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468019369] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-15 12:30:31,535 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-15 12:30:31,535 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-15 12:30:31,537 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-15 12:30:31,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [2115120392] [2022-04-15 12:30:31,537 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [2115120392] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-15 12:30:31,537 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-15 12:30:31,537 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-15 12:30:31,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940768939] [2022-04-15 12:30:31,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-15 12:30:31,546 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2022-04-15 12:30:31,548 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-15 12:30:31,550 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 12:30:31,580 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 16 edges. 16 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 12:30:31,580 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-15 12:30:31,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-15 12:30:31,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-15 12:30:31,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-15 12:30:31,603 INFO L87 Difference]: Start difference. First operand has 28 states, 20 states have (on average 1.5) internal successors, (30), 21 states have internal predecessors, (30), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 12:30:31,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 12:30:31,707 INFO L93 Difference]: Finished difference Result 48 states and 63 transitions. [2022-04-15 12:30:31,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-15 12:30:31,708 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2022-04-15 12:30:31,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-15 12:30:31,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 12:30:31,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 63 transitions. [2022-04-15 12:30:31,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 12:30:31,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 63 transitions. [2022-04-15 12:30:31,727 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 3 states and 63 transitions. [2022-04-15 12:30:31,795 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 63 edges. 63 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 12:30:31,801 INFO L225 Difference]: With dead ends: 48 [2022-04-15 12:30:31,802 INFO L226 Difference]: Without dead ends: 23 [2022-04-15 12:30:31,804 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-15 12:30:31,807 INFO L913 BasicCegarLoop]: 30 mSDtfsCounter, 22 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-15 12:30:31,809 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 33 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-15 12:30:31,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-04-15 12:30:31,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2022-04-15 12:30:31,830 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-15 12:30:31,831 INFO L82 GeneralOperation]: Start isEquivalent. First operand 23 states. Second operand has 23 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 17 states have internal predecessors, (21), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-15 12:30:31,831 INFO L74 IsIncluded]: Start isIncluded. First operand 23 states. Second operand has 23 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 17 states have internal predecessors, (21), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-15 12:30:31,832 INFO L87 Difference]: Start difference. First operand 23 states. Second operand has 23 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 17 states have internal predecessors, (21), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-15 12:30:31,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 12:30:31,833 INFO L93 Difference]: Finished difference Result 23 states and 26 transitions. [2022-04-15 12:30:31,834 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2022-04-15 12:30:31,834 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-15 12:30:31,834 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-15 12:30:31,834 INFO L74 IsIncluded]: Start isIncluded. First operand has 23 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 17 states have internal predecessors, (21), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand 23 states. [2022-04-15 12:30:31,834 INFO L87 Difference]: Start difference. First operand has 23 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 17 states have internal predecessors, (21), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand 23 states. [2022-04-15 12:30:31,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 12:30:31,836 INFO L93 Difference]: Finished difference Result 23 states and 26 transitions. [2022-04-15 12:30:31,836 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2022-04-15 12:30:31,836 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-15 12:30:31,836 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-15 12:30:31,836 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-15 12:30:31,836 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-15 12:30:31,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 17 states have internal predecessors, (21), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-15 12:30:31,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2022-04-15 12:30:31,839 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 16 [2022-04-15 12:30:31,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-15 12:30:31,842 INFO L478 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2022-04-15 12:30:31,846 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 12:30:31,846 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 23 states and 26 transitions. [2022-04-15 12:30:31,873 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 26 edges. 26 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 12:30:31,874 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2022-04-15 12:30:31,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-04-15 12:30:31,874 INFO L491 BasicCegarLoop]: Found error trace [2022-04-15 12:30:31,875 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-15 12:30:31,875 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-15 12:30:31,875 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-15 12:30:31,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-15 12:30:31,876 INFO L85 PathProgramCache]: Analyzing trace with hash 20877373, now seen corresponding path program 1 times [2022-04-15 12:30:31,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-15 12:30:31,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [2114771727] [2022-04-15 12:30:31,877 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-15 12:30:31,877 INFO L85 PathProgramCache]: Analyzing trace with hash 20877373, now seen corresponding path program 2 times [2022-04-15 12:30:31,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-15 12:30:31,877 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157044194] [2022-04-15 12:30:31,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-15 12:30:31,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-15 12:30:31,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 12:30:31,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-15 12:30:31,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 12:30:31,965 INFO L290 TraceCheckUtils]: 0: Hoare triple {235#(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(9, 2); {227#true} is VALID [2022-04-15 12:30:31,965 INFO L290 TraceCheckUtils]: 1: Hoare triple {227#true} assume true; {227#true} is VALID [2022-04-15 12:30:31,965 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {227#true} {227#true} #90#return; {227#true} is VALID [2022-04-15 12:30:31,966 INFO L272 TraceCheckUtils]: 0: Hoare triple {227#true} call ULTIMATE.init(); {235#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-15 12:30:31,966 INFO L290 TraceCheckUtils]: 1: Hoare triple {235#(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(9, 2); {227#true} is VALID [2022-04-15 12:30:31,966 INFO L290 TraceCheckUtils]: 2: Hoare triple {227#true} assume true; {227#true} is VALID [2022-04-15 12:30:31,966 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {227#true} {227#true} #90#return; {227#true} is VALID [2022-04-15 12:30:31,966 INFO L272 TraceCheckUtils]: 4: Hoare triple {227#true} call #t~ret4 := main(); {227#true} is VALID [2022-04-15 12:30:31,967 INFO L290 TraceCheckUtils]: 5: Hoare triple {227#true} havoc ~i~0;havoc ~pvlen~0;havoc ~tmp___1~0;~k~0 := 0;havoc ~n~0;~i~0 := 0;assume -2147483648 <= #t~nondet1 && #t~nondet1 <= 2147483647;~pvlen~0 := #t~nondet1;havoc #t~nondet1; {232#(<= 0 main_~k~0)} is VALID [2022-04-15 12:30:31,975 INFO L290 TraceCheckUtils]: 6: Hoare triple {232#(<= 0 main_~k~0)} assume -2147483648 <= #t~nondet2 && #t~nondet2 <= 2147483647; {232#(<= 0 main_~k~0)} is VALID [2022-04-15 12:30:31,976 INFO L290 TraceCheckUtils]: 7: Hoare triple {232#(<= 0 main_~k~0)} assume !(0 != #t~nondet2 && ~i~0 <= 1000000);havoc #t~nondet2; {232#(<= 0 main_~k~0)} is VALID [2022-04-15 12:30:31,976 INFO L290 TraceCheckUtils]: 8: Hoare triple {232#(<= 0 main_~k~0)} assume !(~i~0 > ~pvlen~0); {232#(<= 0 main_~k~0)} is VALID [2022-04-15 12:30:31,976 INFO L290 TraceCheckUtils]: 9: Hoare triple {232#(<= 0 main_~k~0)} ~i~0 := 0; {232#(<= 0 main_~k~0)} is VALID [2022-04-15 12:30:31,977 INFO L290 TraceCheckUtils]: 10: Hoare triple {232#(<= 0 main_~k~0)} assume -2147483648 <= #t~nondet3 && #t~nondet3 <= 2147483647; {232#(<= 0 main_~k~0)} is VALID [2022-04-15 12:30:31,978 INFO L290 TraceCheckUtils]: 11: Hoare triple {232#(<= 0 main_~k~0)} assume !(0 != #t~nondet3 && ~i~0 <= 1000000);havoc #t~nondet3; {232#(<= 0 main_~k~0)} is VALID [2022-04-15 12:30:31,978 INFO L290 TraceCheckUtils]: 12: Hoare triple {232#(<= 0 main_~k~0)} ~j~0 := 0;~n~0 := ~i~0; {232#(<= 0 main_~k~0)} is VALID [2022-04-15 12:30:31,978 INFO L290 TraceCheckUtils]: 13: Hoare triple {232#(<= 0 main_~k~0)} assume !false; {232#(<= 0 main_~k~0)} is VALID [2022-04-15 12:30:31,979 INFO L272 TraceCheckUtils]: 14: Hoare triple {232#(<= 0 main_~k~0)} call __VERIFIER_assert((if ~k~0 >= 0 then 1 else 0)); {233#(not (= |__VERIFIER_assert_#in~cond| 0))} is VALID [2022-04-15 12:30:31,979 INFO L290 TraceCheckUtils]: 15: Hoare triple {233#(not (= |__VERIFIER_assert_#in~cond| 0))} ~cond := #in~cond; {234#(not (= __VERIFIER_assert_~cond 0))} is VALID [2022-04-15 12:30:31,980 INFO L290 TraceCheckUtils]: 16: Hoare triple {234#(not (= __VERIFIER_assert_~cond 0))} assume 0 == ~cond; {228#false} is VALID [2022-04-15 12:30:31,980 INFO L290 TraceCheckUtils]: 17: Hoare triple {228#false} assume !false; {228#false} is VALID [2022-04-15 12:30:31,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-15 12:30:31,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-15 12:30:31,980 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157044194] [2022-04-15 12:30:31,981 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157044194] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-15 12:30:31,981 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-15 12:30:31,981 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-15 12:30:31,981 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-15 12:30:31,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [2114771727] [2022-04-15 12:30:31,981 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [2114771727] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-15 12:30:31,981 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-15 12:30:31,981 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-15 12:30:31,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164951046] [2022-04-15 12:30:31,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-15 12:30:31,982 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2022-04-15 12:30:31,982 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-15 12:30:31,983 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 12:30:31,998 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 18 edges. 18 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 12:30:31,998 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-15 12:30:31,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-15 12:30:31,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-15 12:30:31,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-04-15 12:30:31,999 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 12:30:32,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 12:30:32,155 INFO L93 Difference]: Finished difference Result 32 states and 35 transitions. [2022-04-15 12:30:32,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-04-15 12:30:32,155 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2022-04-15 12:30:32,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-15 12:30:32,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 12:30:32,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 35 transitions. [2022-04-15 12:30:32,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 12:30:32,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 35 transitions. [2022-04-15 12:30:32,159 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 7 states and 35 transitions. [2022-04-15 12:30:32,186 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 35 edges. 35 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 12:30:32,187 INFO L225 Difference]: With dead ends: 32 [2022-04-15 12:30:32,187 INFO L226 Difference]: Without dead ends: 30 [2022-04-15 12:30:32,187 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-04-15 12:30:32,188 INFO L913 BasicCegarLoop]: 21 mSDtfsCounter, 30 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-15 12:30:32,188 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 38 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-15 12:30:32,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-04-15 12:30:32,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2022-04-15 12:30:32,199 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-15 12:30:32,199 INFO L82 GeneralOperation]: Start isEquivalent. First operand 30 states. Second operand has 29 states, 21 states have (on average 1.1904761904761905) internal successors, (25), 22 states have internal predecessors, (25), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-15 12:30:32,199 INFO L74 IsIncluded]: Start isIncluded. First operand 30 states. Second operand has 29 states, 21 states have (on average 1.1904761904761905) internal successors, (25), 22 states have internal predecessors, (25), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-15 12:30:32,200 INFO L87 Difference]: Start difference. First operand 30 states. Second operand has 29 states, 21 states have (on average 1.1904761904761905) internal successors, (25), 22 states have internal predecessors, (25), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-15 12:30:32,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 12:30:32,201 INFO L93 Difference]: Finished difference Result 30 states and 33 transitions. [2022-04-15 12:30:32,201 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2022-04-15 12:30:32,201 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-15 12:30:32,201 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-15 12:30:32,202 INFO L74 IsIncluded]: Start isIncluded. First operand has 29 states, 21 states have (on average 1.1904761904761905) internal successors, (25), 22 states have internal predecessors, (25), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Second operand 30 states. [2022-04-15 12:30:32,202 INFO L87 Difference]: Start difference. First operand has 29 states, 21 states have (on average 1.1904761904761905) internal successors, (25), 22 states have internal predecessors, (25), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Second operand 30 states. [2022-04-15 12:30:32,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 12:30:32,203 INFO L93 Difference]: Finished difference Result 30 states and 33 transitions. [2022-04-15 12:30:32,203 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2022-04-15 12:30:32,203 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-15 12:30:32,204 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-15 12:30:32,204 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-15 12:30:32,204 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-15 12:30:32,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 21 states have (on average 1.1904761904761905) internal successors, (25), 22 states have internal predecessors, (25), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-15 12:30:32,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2022-04-15 12:30:32,205 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 18 [2022-04-15 12:30:32,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-15 12:30:32,205 INFO L478 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2022-04-15 12:30:32,205 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 12:30:32,205 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 29 states and 32 transitions. [2022-04-15 12:30:32,235 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 32 edges. 32 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 12:30:32,236 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2022-04-15 12:30:32,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-04-15 12:30:32,236 INFO L491 BasicCegarLoop]: Found error trace [2022-04-15 12:30:32,236 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-15 12:30:32,236 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-04-15 12:30:32,237 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-15 12:30:32,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-15 12:30:32,237 INFO L85 PathProgramCache]: Analyzing trace with hash -295388463, now seen corresponding path program 1 times [2022-04-15 12:30:32,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-15 12:30:32,237 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [2055415256] [2022-04-15 12:30:32,697 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-04-15 12:30:32,700 INFO L85 PathProgramCache]: Analyzing trace with hash 1683713962, now seen corresponding path program 1 times [2022-04-15 12:30:32,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-15 12:30:32,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686625629] [2022-04-15 12:30:32,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-15 12:30:32,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-15 12:30:32,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 12:30:32,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-15 12:30:32,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 12:30:32,827 INFO L290 TraceCheckUtils]: 0: Hoare triple {439#(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(9, 2); {428#true} is VALID [2022-04-15 12:30:32,827 INFO L290 TraceCheckUtils]: 1: Hoare triple {428#true} assume true; {428#true} is VALID [2022-04-15 12:30:32,827 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {428#true} {428#true} #90#return; {428#true} is VALID [2022-04-15 12:30:32,827 INFO L272 TraceCheckUtils]: 0: Hoare triple {428#true} call ULTIMATE.init(); {439#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-15 12:30:32,828 INFO L290 TraceCheckUtils]: 1: Hoare triple {439#(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(9, 2); {428#true} is VALID [2022-04-15 12:30:32,828 INFO L290 TraceCheckUtils]: 2: Hoare triple {428#true} assume true; {428#true} is VALID [2022-04-15 12:30:32,828 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {428#true} {428#true} #90#return; {428#true} is VALID [2022-04-15 12:30:32,828 INFO L272 TraceCheckUtils]: 4: Hoare triple {428#true} call #t~ret4 := main(); {428#true} is VALID [2022-04-15 12:30:32,829 INFO L290 TraceCheckUtils]: 5: Hoare triple {428#true} havoc ~i~0;havoc ~pvlen~0;havoc ~tmp___1~0;~k~0 := 0;havoc ~n~0;~i~0 := 0;assume -2147483648 <= #t~nondet1 && #t~nondet1 <= 2147483647;~pvlen~0 := #t~nondet1;havoc #t~nondet1; {433#(= main_~k~0 0)} is VALID [2022-04-15 12:30:32,829 INFO L290 TraceCheckUtils]: 6: Hoare triple {433#(= main_~k~0 0)} assume -2147483648 <= #t~nondet2 && #t~nondet2 <= 2147483647; {433#(= main_~k~0 0)} is VALID [2022-04-15 12:30:32,831 INFO L290 TraceCheckUtils]: 7: Hoare triple {433#(= main_~k~0 0)} assume !(0 != #t~nondet2 && ~i~0 <= 1000000);havoc #t~nondet2; {433#(= main_~k~0 0)} is VALID [2022-04-15 12:30:32,831 INFO L290 TraceCheckUtils]: 8: Hoare triple {433#(= main_~k~0 0)} assume !(~i~0 > ~pvlen~0); {433#(= main_~k~0 0)} is VALID [2022-04-15 12:30:32,832 INFO L290 TraceCheckUtils]: 9: Hoare triple {433#(= main_~k~0 0)} ~i~0 := 0; {434#(and (= main_~k~0 0) (= main_~i~0 0))} is VALID [2022-04-15 12:30:32,833 INFO L290 TraceCheckUtils]: 10: Hoare triple {434#(and (= main_~k~0 0) (= main_~i~0 0))} assume -2147483648 <= #t~nondet3 && #t~nondet3 <= 2147483647; {434#(and (= main_~k~0 0) (= main_~i~0 0))} is VALID [2022-04-15 12:30:32,834 INFO L290 TraceCheckUtils]: 11: Hoare triple {434#(and (= main_~k~0 0) (= main_~i~0 0))} assume !(0 != #t~nondet3 && ~i~0 <= 1000000);havoc #t~nondet3; {434#(and (= main_~k~0 0) (= main_~i~0 0))} is VALID [2022-04-15 12:30:32,834 INFO L290 TraceCheckUtils]: 12: Hoare triple {434#(and (= main_~k~0 0) (= main_~i~0 0))} ~j~0 := 0;~n~0 := ~i~0; {435#(and (= main_~n~0 0) (= main_~k~0 0) (= main_~j~0 0))} is VALID [2022-04-15 12:30:32,835 INFO L290 TraceCheckUtils]: 13: Hoare triple {435#(and (= main_~n~0 0) (= main_~k~0 0) (= main_~j~0 0))} [94] L45-2-->L46_primed: Formula: (or (and (= v_main_~j~0_In_1 v_main_~j~0_Out_2) (= v_main_~n~0_In_1 v_main_~n~0_In_1) (= v_main_~i~0_In_1 v_main_~i~0_Out_2) (= v_main_~k~0_In_1 v_main_~k~0_Out_2)) (and (< v_main_~j~0_Out_2 v_main_~n~0_In_1) (<= 0 (+ v_main_~k~0_Out_2 1)) (= (+ (* (- 1) v_main_~k~0_Out_2) v_main_~i~0_Out_2) (+ v_main_~i~0_In_1 (* (- 1) v_main_~k~0_In_1))) (<= v_main_~k~0_Out_2 v_main_~k~0_In_1) (= (+ v_main_~j~0_In_1 v_main_~k~0_In_1) (+ v_main_~k~0_Out_2 v_main_~j~0_Out_2)) (= v_main_~n~0_In_1 0))) InVars {main_~i~0=v_main_~i~0_In_1, main_~n~0=v_main_~n~0_In_1, main_~k~0=v_main_~k~0_In_1, main_~j~0=v_main_~j~0_In_1} OutVars{main_~i~0=v_main_~i~0_Out_2, main_~n~0=v_main_~n~0_In_1, main_~k~0=v_main_~k~0_Out_2, main_~j~0=v_main_~j~0_Out_2} AuxVars[] AssignedVars[main_~k~0, main_~j~0, main_~i~0] {436#(or (<= 1 main_~k~0) (= main_~k~0 0))} is VALID [2022-04-15 12:30:32,835 INFO L290 TraceCheckUtils]: 14: Hoare triple {436#(or (<= 1 main_~k~0) (= main_~k~0 0))} [93] L46_primed-->L46: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {436#(or (<= 1 main_~k~0) (= main_~k~0 0))} is VALID [2022-04-15 12:30:32,836 INFO L272 TraceCheckUtils]: 15: Hoare triple {436#(or (<= 1 main_~k~0) (= main_~k~0 0))} call __VERIFIER_assert((if ~k~0 >= 0 then 1 else 0)); {437#(not (= |__VERIFIER_assert_#in~cond| 0))} is VALID [2022-04-15 12:30:32,836 INFO L290 TraceCheckUtils]: 16: Hoare triple {437#(not (= |__VERIFIER_assert_#in~cond| 0))} ~cond := #in~cond; {438#(not (= __VERIFIER_assert_~cond 0))} is VALID [2022-04-15 12:30:32,837 INFO L290 TraceCheckUtils]: 17: Hoare triple {438#(not (= __VERIFIER_assert_~cond 0))} assume 0 == ~cond; {429#false} is VALID [2022-04-15 12:30:32,837 INFO L290 TraceCheckUtils]: 18: Hoare triple {429#false} assume !false; {429#false} is VALID [2022-04-15 12:30:32,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-15 12:30:32,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-15 12:30:32,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686625629] [2022-04-15 12:30:32,837 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686625629] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-15 12:30:32,837 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-15 12:30:32,837 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-04-15 12:30:32,933 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-15 12:30:32,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [2055415256] [2022-04-15 12:30:32,934 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [2055415256] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-15 12:30:32,934 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-15 12:30:32,934 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-04-15 12:30:32,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028109685] [2022-04-15 12:30:32,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-15 12:30:32,934 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 10 states have internal predecessors, (20), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 26 [2022-04-15 12:30:32,935 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-15 12:30:32,935 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 13 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 10 states have internal predecessors, (20), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-15 12:30:32,944 WARN L143 InductivityCheck]: Transition 443#(and (not (<= main_~n~0 main_~j~0)) (or (= (+ main_~k~0 1) 0) (<= 0 main_~k~0))) ( _ , assume !false; , 436#(or (<= 1 main_~k~0) (= main_~k~0 0)) ) not inductive [2022-04-15 12:30:32,945 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-04-15 12:30:32,945 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: inductivity failed at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.InductivityCheck.evaluateResult(InductivityCheck.java:145) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.InductivityCheck.checkInductivity(InductivityCheck.java:103) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.InductivityCheck.(InductivityCheck.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.constructInterpolantAutomaton(BasicCegarLoop.java:682) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.constructRefinementAutomaton(AbstractCegarLoop.java:547) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:420) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:349) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:331) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:411) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:301) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:261) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:153) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-04-15 12:30:32,948 INFO L158 Benchmark]: Toolchain (without parser) took 2163.17ms. Allocated memory was 170.9MB in the beginning and 220.2MB in the end (delta: 49.3MB). Free memory was 120.2MB in the beginning and 154.1MB in the end (delta: -33.8MB). Peak memory consumption was 16.9MB. Max. memory is 8.0GB. [2022-04-15 12:30:32,948 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 170.9MB. Free memory is still 136.3MB. There was no memory consumed. Max. memory is 8.0GB. [2022-04-15 12:30:32,948 INFO L158 Benchmark]: CACSL2BoogieTranslator took 194.97ms. Allocated memory was 170.9MB in the beginning and 220.2MB in the end (delta: 49.3MB). Free memory was 120.1MB in the beginning and 195.9MB in the end (delta: -75.8MB). Peak memory consumption was 12.7MB. Max. memory is 8.0GB. [2022-04-15 12:30:32,949 INFO L158 Benchmark]: Boogie Preprocessor took 27.68ms. Allocated memory is still 220.2MB. Free memory was 195.9MB in the beginning and 194.4MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-04-15 12:30:32,949 INFO L158 Benchmark]: RCFGBuilder took 226.17ms. Allocated memory is still 220.2MB. Free memory was 194.4MB in the beginning and 182.3MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2022-04-15 12:30:32,949 INFO L158 Benchmark]: TraceAbstraction took 1709.85ms. Allocated memory is still 220.2MB. Free memory was 181.8MB in the beginning and 154.1MB in the end (delta: 27.7MB). Peak memory consumption was 28.3MB. Max. memory is 8.0GB. [2022-04-15 12:30:32,950 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 0.16ms. Allocated memory is still 170.9MB. Free memory is still 136.3MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 194.97ms. Allocated memory was 170.9MB in the beginning and 220.2MB in the end (delta: 49.3MB). Free memory was 120.1MB in the beginning and 195.9MB in the end (delta: -75.8MB). Peak memory consumption was 12.7MB. Max. memory is 8.0GB. * Boogie Preprocessor took 27.68ms. Allocated memory is still 220.2MB. Free memory was 195.9MB in the beginning and 194.4MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 226.17ms. Allocated memory is still 220.2MB. Free memory was 194.4MB in the beginning and 182.3MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * TraceAbstraction took 1709.85ms. Allocated memory is still 220.2MB. Free memory was 181.8MB in the beginning and 154.1MB in the end (delta: 27.7MB). Peak memory consumption was 28.3MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: inductivity failed de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: inductivity failed: de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.InductivityCheck.evaluateResult(InductivityCheck.java:145) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2022-04-15 12:30:32,974 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...