/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/acceleratedInterpolationJordan_32.epf -i ../../../trunk/examples/svcomp/loop-new/count_by_2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-fb4f59a-m [2022-04-28 03:15:20,523 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-28 03:15:20,525 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-28 03:15:20,562 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-04-28 03:15:20,614 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-28 03:15:20,614 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-28 03:15:20,616 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-28 03:15:20,616 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf [2022-04-28 03:15:20,625 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-28 03:15:20,625 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-28 03:15:20,626 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-28 03:15:20,626 INFO L138 SettingsManager]: * sizeof long=4 [2022-04-28 03:15:20,626 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-28 03:15:20,626 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-04-28 03:15:20,626 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-28 03:15:20,626 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-28 03:15:20,627 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-28 03:15:20,627 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-28 03:15:20,627 INFO L138 SettingsManager]: * sizeof long double=12 [2022-04-28 03:15:20,627 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-28 03:15:20,627 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-28 03:15:20,627 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-28 03:15:20,627 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-28 03:15:20,628 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-28 03:15:20,628 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-04-28 03:15:20,628 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-28 03:15:20,628 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-28 03:15:20,628 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-28 03:15:20,628 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2022-04-28 03:15:20,628 INFO L138 SettingsManager]: * Trace refinement strategy=ACCELERATED_INTERPOLATION [2022-04-28 03:15:20,628 INFO L138 SettingsManager]: * Trace refinement strategy used in Accelerated Interpolation=CAMEL [2022-04-28 03:15:20,629 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-28 03:15:20,629 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2022-04-28 03:15:20,629 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-04-28 03:15:20,833 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-28 03:15:20,852 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-28 03:15:20,854 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-28 03:15:20,855 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-28 03:15:20,856 INFO L275 PluginConnector]: CDTParser initialized [2022-04-28 03:15:20,857 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-new/count_by_2.i [2022-04-28 03:15:20,914 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/db9f7f4f7/3108924a7989401aa4a1c296ceb5d270/FLAGa2f08a72e [2022-04-28 03:15:21,287 INFO L306 CDTParser]: Found 1 translation units. [2022-04-28 03:15:21,288 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-new/count_by_2.i [2022-04-28 03:15:21,294 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/db9f7f4f7/3108924a7989401aa4a1c296ceb5d270/FLAGa2f08a72e [2022-04-28 03:15:21,303 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/db9f7f4f7/3108924a7989401aa4a1c296ceb5d270 [2022-04-28 03:15:21,308 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-28 03:15:21,309 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-04-28 03:15:21,310 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-28 03:15:21,310 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-28 03:15:21,313 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-28 03:15:21,314 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.04 03:15:21" (1/1) ... [2022-04-28 03:15:21,315 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a0739d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 03:15:21, skipping insertion in model container [2022-04-28 03:15:21,315 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.04 03:15:21" (1/1) ... [2022-04-28 03:15:21,321 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-28 03:15:21,332 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-28 03:15:21,470 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-new/count_by_2.i[891,904] [2022-04-28 03:15:21,478 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-28 03:15:21,485 INFO L203 MainTranslator]: Completed pre-run [2022-04-28 03:15:21,495 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-new/count_by_2.i[891,904] [2022-04-28 03:15:21,497 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-28 03:15:21,508 INFO L208 MainTranslator]: Completed translation [2022-04-28 03:15:21,509 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 03:15:21 WrapperNode [2022-04-28 03:15:21,509 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-28 03:15:21,510 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-28 03:15:21,510 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-28 03:15:21,510 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-28 03:15:21,517 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 03:15:21" (1/1) ... [2022-04-28 03:15:21,518 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 03:15:21" (1/1) ... [2022-04-28 03:15:21,522 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 03:15:21" (1/1) ... [2022-04-28 03:15:21,523 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 03:15:21" (1/1) ... [2022-04-28 03:15:21,527 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 03:15:21" (1/1) ... [2022-04-28 03:15:21,530 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 03:15:21" (1/1) ... [2022-04-28 03:15:21,531 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 03:15:21" (1/1) ... [2022-04-28 03:15:21,532 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-28 03:15:21,533 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-28 03:15:21,533 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-28 03:15:21,533 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-28 03:15:21,534 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 03:15:21" (1/1) ... [2022-04-28 03:15:21,540 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-28 03:15:21,548 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-28 03:15:21,557 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) [2022-04-28 03:15:21,564 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 [2022-04-28 03:15:21,591 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-04-28 03:15:21,591 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-28 03:15:21,592 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-04-28 03:15:21,592 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-04-28 03:15:21,592 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-04-28 03:15:21,592 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-04-28 03:15:21,592 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-04-28 03:15:21,592 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-04-28 03:15:21,592 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2022-04-28 03:15:21,593 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2022-04-28 03:15:21,593 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-04-28 03:15:21,593 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-28 03:15:21,594 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-04-28 03:15:21,594 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-04-28 03:15:21,594 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-04-28 03:15:21,594 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-04-28 03:15:21,594 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-04-28 03:15:21,594 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-28 03:15:21,595 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-28 03:15:21,595 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-28 03:15:21,595 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-28 03:15:21,595 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-28 03:15:21,643 INFO L234 CfgBuilder]: Building ICFG [2022-04-28 03:15:21,645 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-28 03:15:21,736 INFO L275 CfgBuilder]: Performing block encoding [2022-04-28 03:15:21,742 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-28 03:15:21,742 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-04-28 03:15:21,743 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.04 03:15:21 BoogieIcfgContainer [2022-04-28 03:15:21,744 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-28 03:15:21,745 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-28 03:15:21,745 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-28 03:15:21,756 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-28 03:15:21,756 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.04 03:15:21" (1/3) ... [2022-04-28 03:15:21,757 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@410c060a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.04 03:15:21, skipping insertion in model container [2022-04-28 03:15:21,757 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 03:15:21" (2/3) ... [2022-04-28 03:15:21,757 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@410c060a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.04 03:15:21, skipping insertion in model container [2022-04-28 03:15:21,758 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.04 03:15:21" (3/3) ... [2022-04-28 03:15:21,759 INFO L111 eAbstractionObserver]: Analyzing ICFG count_by_2.i [2022-04-28 03:15:21,769 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-04-28 03:15:21,769 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-04-28 03:15:21,840 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-28 03:15:21,846 INFO L357 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, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@1daf0c5d, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@32a79eb1 [2022-04-28 03:15:21,846 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-04-28 03:15:21,853 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 13 states have internal predecessors, (16), 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) [2022-04-28 03:15:21,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-04-28 03:15:21,863 INFO L187 NwaCegarLoop]: Found error trace [2022-04-28 03:15:21,863 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-28 03:15:21,864 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-28 03:15:21,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-28 03:15:21,868 INFO L85 PathProgramCache]: Analyzing trace with hash 1305738320, now seen corresponding path program 1 times [2022-04-28 03:15:21,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-28 03:15:21,874 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [778226814] [2022-04-28 03:15:21,881 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-28 03:15:21,881 INFO L85 PathProgramCache]: Analyzing trace with hash 1305738320, now seen corresponding path program 2 times [2022-04-28 03:15:21,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-28 03:15:21,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534833747] [2022-04-28 03:15:21,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-28 03:15:21,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-28 03:15:21,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-28 03:15:22,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-28 03:15:22,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-28 03:15:22,072 INFO L290 TraceCheckUtils]: 0: Hoare triple {29#(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); {23#true} is VALID [2022-04-28 03:15:22,072 INFO L290 TraceCheckUtils]: 1: Hoare triple {23#true} assume true; {23#true} is VALID [2022-04-28 03:15:22,072 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {23#true} {23#true} #51#return; {23#true} is VALID [2022-04-28 03:15:22,077 INFO L272 TraceCheckUtils]: 0: Hoare triple {23#true} call ULTIMATE.init(); {29#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-28 03:15:22,077 INFO L290 TraceCheckUtils]: 1: Hoare triple {29#(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); {23#true} is VALID [2022-04-28 03:15:22,078 INFO L290 TraceCheckUtils]: 2: Hoare triple {23#true} assume true; {23#true} is VALID [2022-04-28 03:15:22,079 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {23#true} {23#true} #51#return; {23#true} is VALID [2022-04-28 03:15:22,079 INFO L272 TraceCheckUtils]: 4: Hoare triple {23#true} call #t~ret1 := main(); {23#true} is VALID [2022-04-28 03:15:22,080 INFO L290 TraceCheckUtils]: 5: Hoare triple {23#true} havoc ~i~0;~i~0 := 0; {28#(= main_~i~0 0)} is VALID [2022-04-28 03:15:22,081 INFO L290 TraceCheckUtils]: 6: Hoare triple {28#(= main_~i~0 0)} assume !(~i~0 < 1000000); {24#false} is VALID [2022-04-28 03:15:22,082 INFO L272 TraceCheckUtils]: 7: Hoare triple {24#false} call __VERIFIER_assert((if 1000000 == ~i~0 then 1 else 0)); {24#false} is VALID [2022-04-28 03:15:22,082 INFO L290 TraceCheckUtils]: 8: Hoare triple {24#false} ~cond := #in~cond; {24#false} is VALID [2022-04-28 03:15:22,082 INFO L290 TraceCheckUtils]: 9: Hoare triple {24#false} assume 0 == ~cond; {24#false} is VALID [2022-04-28 03:15:22,082 INFO L290 TraceCheckUtils]: 10: Hoare triple {24#false} assume !false; {24#false} is VALID [2022-04-28 03:15:22,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-28 03:15:22,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-28 03:15:22,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534833747] [2022-04-28 03:15:22,084 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534833747] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-28 03:15:22,085 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-28 03:15:22,085 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-28 03:15:22,087 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-28 03:15:22,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [778226814] [2022-04-28 03:15:22,088 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [778226814] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-28 03:15:22,088 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-28 03:15:22,088 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-28 03:15:22,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116898208] [2022-04-28 03:15:22,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-28 03:15:22,093 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 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 11 [2022-04-28 03:15:22,095 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-28 03:15:22,097 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 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) [2022-04-28 03:15:22,124 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 11 edges. 11 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 03:15:22,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-04-28 03:15:22,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-28 03:15:22,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-04-28 03:15:22,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-28 03:15:22,159 INFO L87 Difference]: Start difference. First operand has 20 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 13 states have internal predecessors, (16), 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 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 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) [2022-04-28 03:15:22,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 03:15:22,304 INFO L93 Difference]: Finished difference Result 34 states and 39 transitions. [2022-04-28 03:15:22,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-28 03:15:22,311 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 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 11 [2022-04-28 03:15:22,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-28 03:15:22,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 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) [2022-04-28 03:15:22,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 39 transitions. [2022-04-28 03:15:22,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 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) [2022-04-28 03:15:22,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 39 transitions. [2022-04-28 03:15:22,322 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 4 states and 39 transitions. [2022-04-28 03:15:22,373 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 39 edges. 39 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 03:15:22,382 INFO L225 Difference]: With dead ends: 34 [2022-04-28 03:15:22,382 INFO L226 Difference]: Without dead ends: 15 [2022-04-28 03:15:22,385 INFO L412 NwaCegarLoop]: 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 [2022-04-28 03:15:22,389 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 13 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-28 03:15:22,390 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 26 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-28 03:15:22,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2022-04-28 03:15:22,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 14. [2022-04-28 03:15:22,425 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-28 03:15:22,426 INFO L82 GeneralOperation]: Start isEquivalent. First operand 15 states. Second operand has 14 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 states have internal predecessors, (10), 3 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) [2022-04-28 03:15:22,426 INFO L74 IsIncluded]: Start isIncluded. First operand 15 states. Second operand has 14 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 states have internal predecessors, (10), 3 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) [2022-04-28 03:15:22,427 INFO L87 Difference]: Start difference. First operand 15 states. Second operand has 14 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 states have internal predecessors, (10), 3 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) [2022-04-28 03:15:22,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 03:15:22,430 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2022-04-28 03:15:22,430 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2022-04-28 03:15:22,431 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 03:15:22,431 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 03:15:22,431 INFO L74 IsIncluded]: Start isIncluded. First operand has 14 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 states have internal predecessors, (10), 3 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) Second operand 15 states. [2022-04-28 03:15:22,432 INFO L87 Difference]: Start difference. First operand has 14 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 states have internal predecessors, (10), 3 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) Second operand 15 states. [2022-04-28 03:15:22,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 03:15:22,435 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2022-04-28 03:15:22,435 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2022-04-28 03:15:22,436 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 03:15:22,436 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 03:15:22,436 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-28 03:15:22,436 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-28 03:15:22,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 states have internal predecessors, (10), 3 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) [2022-04-28 03:15:22,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2022-04-28 03:15:22,439 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 11 [2022-04-28 03:15:22,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-28 03:15:22,439 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2022-04-28 03:15:22,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 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) [2022-04-28 03:15:22,440 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 14 states and 14 transitions. [2022-04-28 03:15:22,456 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 14 edges. 14 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 03:15:22,457 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2022-04-28 03:15:22,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-04-28 03:15:22,458 INFO L187 NwaCegarLoop]: Found error trace [2022-04-28 03:15:22,458 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-28 03:15:22,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-28 03:15:22,459 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-28 03:15:22,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-28 03:15:22,460 INFO L85 PathProgramCache]: Analyzing trace with hash 1786070446, now seen corresponding path program 1 times [2022-04-28 03:15:22,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-28 03:15:22,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1147146669] [2022-04-28 03:15:22,811 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-28 03:15:22,814 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-04-28 03:15:22,818 INFO L85 PathProgramCache]: Analyzing trace with hash -1492527982, now seen corresponding path program 1 times [2022-04-28 03:15:22,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-28 03:15:22,818 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081651094] [2022-04-28 03:15:22,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-28 03:15:22,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-28 03:15:22,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-28 03:15:22,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-28 03:15:22,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-28 03:15:22,948 INFO L290 TraceCheckUtils]: 0: Hoare triple {170#(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); {160#true} is VALID [2022-04-28 03:15:22,949 INFO L290 TraceCheckUtils]: 1: Hoare triple {160#true} assume true; {160#true} is VALID [2022-04-28 03:15:22,949 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {160#true} {160#true} #51#return; {160#true} is VALID [2022-04-28 03:15:22,950 INFO L272 TraceCheckUtils]: 0: Hoare triple {160#true} call ULTIMATE.init(); {170#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-28 03:15:22,950 INFO L290 TraceCheckUtils]: 1: Hoare triple {170#(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); {160#true} is VALID [2022-04-28 03:15:22,951 INFO L290 TraceCheckUtils]: 2: Hoare triple {160#true} assume true; {160#true} is VALID [2022-04-28 03:15:22,951 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {160#true} {160#true} #51#return; {160#true} is VALID [2022-04-28 03:15:22,951 INFO L272 TraceCheckUtils]: 4: Hoare triple {160#true} call #t~ret1 := main(); {160#true} is VALID [2022-04-28 03:15:22,952 INFO L290 TraceCheckUtils]: 5: Hoare triple {160#true} havoc ~i~0;~i~0 := 0; {165#(= main_~i~0 0)} is VALID [2022-04-28 03:15:22,953 INFO L290 TraceCheckUtils]: 6: Hoare triple {165#(= main_~i~0 0)} [55] L26-3-->L26-4_primed: Formula: (let ((.cse0 (= v_main_~i~0_11 v_main_~i~0_10))) (or .cse0 (let ((.cse1 (div (+ v_main_~i~0_11 (* v_main_~i~0_10 (- 1))) (- 2)))) (and (< 0 .cse1) (< .cse1 (+ 2 (div (+ 999999 (* v_main_~i~0_11 (- 1))) 2))) (= (mod (+ v_main_~i~0_11 v_main_~i~0_10) 2) 0))) (and (<= 1000000 v_main_~i~0_11) .cse0))) InVars {main_~i~0=v_main_~i~0_11} OutVars{main_~i~0=v_main_~i~0_10} AuxVars[] AssignedVars[main_~i~0] {166#(<= main_~i~0 1000000)} is VALID [2022-04-28 03:15:22,954 INFO L290 TraceCheckUtils]: 7: Hoare triple {166#(<= main_~i~0 1000000)} [54] L26-4_primed-->L26-4: Formula: (not (< v_main_~i~0_1 1000000)) InVars {main_~i~0=v_main_~i~0_1} OutVars{main_~i~0=v_main_~i~0_1} AuxVars[] AssignedVars[] {167#(and (<= main_~i~0 1000000) (< 999999 main_~i~0))} is VALID [2022-04-28 03:15:22,954 INFO L272 TraceCheckUtils]: 8: Hoare triple {167#(and (<= main_~i~0 1000000) (< 999999 main_~i~0))} call __VERIFIER_assert((if 1000000 == ~i~0 then 1 else 0)); {168#(not (= |__VERIFIER_assert_#in~cond| 0))} is VALID [2022-04-28 03:15:22,955 INFO L290 TraceCheckUtils]: 9: Hoare triple {168#(not (= |__VERIFIER_assert_#in~cond| 0))} ~cond := #in~cond; {169#(not (= __VERIFIER_assert_~cond 0))} is VALID [2022-04-28 03:15:22,955 INFO L290 TraceCheckUtils]: 10: Hoare triple {169#(not (= __VERIFIER_assert_~cond 0))} assume 0 == ~cond; {161#false} is VALID [2022-04-28 03:15:22,956 INFO L290 TraceCheckUtils]: 11: Hoare triple {161#false} assume !false; {161#false} is VALID [2022-04-28 03:15:22,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-28 03:15:22,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-28 03:15:22,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081651094] [2022-04-28 03:15:22,958 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081651094] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-28 03:15:22,958 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-28 03:15:22,958 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-04-28 03:15:23,098 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-28 03:15:23,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1147146669] [2022-04-28 03:15:23,099 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1147146669] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-28 03:15:23,099 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-28 03:15:23,099 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-04-28 03:15:23,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114642224] [2022-04-28 03:15:23,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-28 03:15:23,101 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.125) internal successors, (9), 7 states have internal predecessors, (9), 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 13 [2022-04-28 03:15:23,101 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-28 03:15:23,101 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 9 states, 8 states have (on average 1.125) internal successors, (9), 7 states have internal predecessors, (9), 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) [2022-04-28 03:15:23,113 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 13 edges. 13 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 03:15:23,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-04-28 03:15:23,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-28 03:15:23,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-04-28 03:15:23,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-04-28 03:15:23,115 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 7 states have internal predecessors, (9), 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) [2022-04-28 03:15:23,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 03:15:23,334 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2022-04-28 03:15:23,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-04-28 03:15:23,334 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.125) internal successors, (9), 7 states have internal predecessors, (9), 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 13 [2022-04-28 03:15:23,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-28 03:15:23,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 7 states have internal predecessors, (9), 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) [2022-04-28 03:15:23,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 15 transitions. [2022-04-28 03:15:23,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 7 states have internal predecessors, (9), 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) [2022-04-28 03:15:23,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 15 transitions. [2022-04-28 03:15:23,337 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 9 states and 15 transitions. [2022-04-28 03:15:23,360 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 15 edges. 15 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 03:15:23,360 INFO L225 Difference]: With dead ends: 15 [2022-04-28 03:15:23,360 INFO L226 Difference]: Without dead ends: 0 [2022-04-28 03:15:23,361 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=69, Invalid=203, Unknown=0, NotChecked=0, Total=272 [2022-04-28 03:15:23,364 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 11 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-28 03:15:23,365 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 24 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-28 03:15:23,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-04-28 03:15:23,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-04-28 03:15:23,366 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-28 03:15:23,366 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) [2022-04-28 03:15:23,366 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) [2022-04-28 03:15:23,366 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) [2022-04-28 03:15:23,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 03:15:23,367 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2022-04-28 03:15:23,367 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-04-28 03:15:23,367 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 03:15:23,367 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 03:15:23,367 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. [2022-04-28 03:15:23,367 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. [2022-04-28 03:15:23,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 03:15:23,367 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2022-04-28 03:15:23,367 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-04-28 03:15:23,368 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 03:15:23,368 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 03:15:23,368 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-28 03:15:23,368 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-28 03:15:23,368 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) [2022-04-28 03:15:23,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-04-28 03:15:23,368 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2022-04-28 03:15:23,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-28 03:15:23,368 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-04-28 03:15:23,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.125) internal successors, (9), 7 states have internal predecessors, (9), 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) [2022-04-28 03:15:23,369 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 0 states and 0 transitions. [2022-04-28 03:15:23,369 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 0 edges. 0 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 03:15:23,369 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-04-28 03:15:23,369 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 03:15:23,371 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-04-28 03:15:23,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-04-28 03:15:23,373 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-04-28 03:15:23,471 INFO L899 garLoopResultBuilder]: For program point reach_errorEXIT(line 12) no Hoare annotation was computed. [2022-04-28 03:15:23,471 INFO L899 garLoopResultBuilder]: For program point reach_errorENTRY(line 12) no Hoare annotation was computed. [2022-04-28 03:15:23,471 INFO L899 garLoopResultBuilder]: For program point L12-1(line 12) no Hoare annotation was computed. [2022-04-28 03:15:23,471 INFO L899 garLoopResultBuilder]: For program point L15(line 15) no Hoare annotation was computed. [2022-04-28 03:15:23,471 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notENTRY(lines 14 16) no Hoare annotation was computed. [2022-04-28 03:15:23,471 INFO L899 garLoopResultBuilder]: For program point L15-2(lines 14 16) no Hoare annotation was computed. [2022-04-28 03:15:23,471 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 14 16) no Hoare annotation was computed. [2022-04-28 03:15:23,475 INFO L902 garLoopResultBuilder]: At program point mainENTRY(lines 24 29) the Hoare annotation is: true [2022-04-28 03:15:23,476 INFO L902 garLoopResultBuilder]: At program point L27(line 27) the Hoare annotation is: true [2022-04-28 03:15:23,476 INFO L902 garLoopResultBuilder]: At program point mainEXIT(lines 24 29) the Hoare annotation is: true [2022-04-28 03:15:23,476 INFO L895 garLoopResultBuilder]: At program point L26-2(line 26) the Hoare annotation is: (or (and (or (= main_~i~0 2) (and (= 0 (mod main_~i~0 2)) (< 0 (div (+ (* (- 1) main_~i~0) 2) (- 2))))) (< main_~i~0 1000000)) (= main_~i~0 0)) [2022-04-28 03:15:23,476 INFO L895 garLoopResultBuilder]: At program point L26-3(line 26) the Hoare annotation is: (or (= main_~i~0 0) (and (< main_~i~0 1000002) (or (= main_~i~0 2) (and (= 0 (mod main_~i~0 2)) (< 0 (div (+ (* (- 1) main_~i~0) 2) (- 2))))))) [2022-04-28 03:15:23,476 INFO L895 garLoopResultBuilder]: At program point L26-4(line 26) the Hoare annotation is: (and (<= main_~i~0 1000000) (< 999999 main_~i~0)) [2022-04-28 03:15:23,476 INFO L902 garLoopResultBuilder]: At program point mainFINAL(lines 24 29) the Hoare annotation is: true [2022-04-28 03:15:23,477 INFO L902 garLoopResultBuilder]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2022-04-28 03:15:23,477 INFO L895 garLoopResultBuilder]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|)) [2022-04-28 03:15:23,477 INFO L902 garLoopResultBuilder]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2022-04-28 03:15:23,477 INFO L902 garLoopResultBuilder]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2022-04-28 03:15:23,477 INFO L902 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: true [2022-04-28 03:15:23,480 INFO L902 garLoopResultBuilder]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2022-04-28 03:15:23,480 INFO L902 garLoopResultBuilder]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2022-04-28 03:15:23,483 INFO L902 garLoopResultBuilder]: At program point L18-2(lines 17 22) the Hoare annotation is: true [2022-04-28 03:15:23,483 INFO L902 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 17 22) the Hoare annotation is: true [2022-04-28 03:15:23,483 INFO L902 garLoopResultBuilder]: At program point __VERIFIER_assertEXIT(lines 17 22) the Hoare annotation is: true [2022-04-28 03:15:23,483 INFO L895 garLoopResultBuilder]: At program point L19(line 19) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2022-04-28 03:15:23,483 INFO L895 garLoopResultBuilder]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 19) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2022-04-28 03:15:23,483 INFO L895 garLoopResultBuilder]: At program point L18(lines 18 20) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2022-04-28 03:15:23,486 INFO L356 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2022-04-28 03:15:23,488 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-04-28 03:15:23,495 WARN L170 areAnnotationChecker]: reach_errorENTRY has no Hoare annotation [2022-04-28 03:15:23,495 WARN L170 areAnnotationChecker]: reach_errorENTRY has no Hoare annotation [2022-04-28 03:15:23,496 WARN L170 areAnnotationChecker]: assume_abort_if_notENTRY has no Hoare annotation [2022-04-28 03:15:23,497 WARN L170 areAnnotationChecker]: L12-1 has no Hoare annotation [2022-04-28 03:15:23,497 WARN L170 areAnnotationChecker]: L15 has no Hoare annotation [2022-04-28 03:15:23,497 WARN L170 areAnnotationChecker]: L15 has no Hoare annotation [2022-04-28 03:15:23,502 WARN L170 areAnnotationChecker]: L15-2 has no Hoare annotation [2022-04-28 03:15:23,504 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. [2022-04-28 03:15:23,514 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.04 03:15:23 BoogieIcfgContainer [2022-04-28 03:15:23,514 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-04-28 03:15:23,518 INFO L158 Benchmark]: Toolchain (without parser) took 2206.44ms. Allocated memory was 194.0MB in the beginning and 232.8MB in the end (delta: 38.8MB). Free memory was 142.4MB in the beginning and 152.5MB in the end (delta: -10.2MB). Peak memory consumption was 27.1MB. Max. memory is 8.0GB. [2022-04-28 03:15:23,519 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 194.0MB. Free memory is still 158.7MB. There was no memory consumed. Max. memory is 8.0GB. [2022-04-28 03:15:23,520 INFO L158 Benchmark]: CACSL2BoogieTranslator took 198.85ms. Allocated memory is still 194.0MB. Free memory was 142.2MB in the beginning and 169.7MB in the end (delta: -27.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-04-28 03:15:23,520 INFO L158 Benchmark]: Boogie Preprocessor took 22.94ms. Allocated memory is still 194.0MB. Free memory was 169.7MB in the beginning and 168.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-04-28 03:15:23,520 INFO L158 Benchmark]: RCFGBuilder took 210.40ms. Allocated memory is still 194.0MB. Free memory was 168.1MB in the beginning and 158.3MB in the end (delta: 9.8MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2022-04-28 03:15:23,521 INFO L158 Benchmark]: TraceAbstraction took 1769.33ms. Allocated memory was 194.0MB in the beginning and 232.8MB in the end (delta: 38.8MB). Free memory was 157.6MB in the beginning and 152.5MB in the end (delta: 5.1MB). Peak memory consumption was 43.2MB. Max. memory is 8.0GB. [2022-04-28 03:15:23,522 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 194.0MB. Free memory is still 158.7MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 198.85ms. Allocated memory is still 194.0MB. Free memory was 142.2MB in the beginning and 169.7MB in the end (delta: -27.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 22.94ms. Allocated memory is still 194.0MB. Free memory was 169.7MB in the beginning and 168.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 210.40ms. Allocated memory is still 194.0MB. Free memory was 168.1MB in the beginning and 158.3MB in the end (delta: 9.8MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * TraceAbstraction took 1769.33ms. Allocated memory was 194.0MB in the beginning and 232.8MB in the end (delta: 38.8MB). Free memory was 157.6MB in the beginning and 152.5MB in the end (delta: 5.1MB). Peak memory consumption was 43.2MB. 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: 19]: 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 6 procedures, 27 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.7s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 25 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 24 mSDsluCounter, 50 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 26 mSDsCounter, 8 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 48 IncrementalHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 8 mSolverCounterUnsat, 24 mSDtfsCounter, 48 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 26 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=0, InterpolantAutomatonStates: 13, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 20 LocationsWithAnnotation, 26 PreInvPairs, 36 NumberOfFragments, 95 HoareAnnotationTreeSize, 26 FomulaSimplifications, 22 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 20 FomulaSimplificationsInter, 23 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 26]: Loop Invariant Derived loop invariant: i == 0 || (i < 1000002 && (i == 2 || (0 == i % 2 && 0 < (-1 * i + 2) / -2))) - ProcedureContractResult [Line: 24]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 17]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert: 1 RESULT: Ultimate proved your program to be correct! [2022-04-28 03:15:23,554 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...