/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationQvasr_64.epf -i ../../../trunk/examples/svcomp/loop-zilu/benchmark11_linear.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05ce600 [2022-02-24 04:01:22,436 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-24 04:01:22,438 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-24 04:01:22,475 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-02-24 04:01:22,476 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-02-24 04:01:22,477 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-02-24 04:01:22,478 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-02-24 04:01:22,479 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-02-24 04:01:22,481 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-02-24 04:01:22,481 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-02-24 04:01:22,482 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-02-24 04:01:22,483 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-02-24 04:01:22,484 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-24 04:01:22,484 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-24 04:01:22,485 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-24 04:01:22,486 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-24 04:01:22,489 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-24 04:01:22,494 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-24 04:01:22,496 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-24 04:01:22,497 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-24 04:01:22,498 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-24 04:01:22,503 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-24 04:01:22,507 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-24 04:01:22,508 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-24 04:01:22,510 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-02-24 04:01:22,510 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-02-24 04:01:22,510 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-02-24 04:01:22,511 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-02-24 04:01:22,512 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-02-24 04:01:22,512 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-02-24 04:01:22,512 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-02-24 04:01:22,513 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-02-24 04:01:22,514 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-02-24 04:01:22,514 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-02-24 04:01:22,515 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-02-24 04:01:22,515 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-02-24 04:01:22,516 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-02-24 04:01:22,516 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-02-24 04:01:22,516 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-24 04:01:22,517 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-24 04:01:22,517 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-24 04:01:22,524 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationQvasr_64.epf [2022-02-24 04:01:22,533 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-24 04:01:22,533 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-24 04:01:22,535 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-24 04:01:22,535 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-24 04:01:22,535 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-24 04:01:22,535 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-24 04:01:22,535 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-24 04:01:22,535 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-24 04:01:22,536 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-24 04:01:22,536 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-24 04:01:22,536 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-24 04:01:22,536 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-24 04:01:22,536 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-24 04:01:22,536 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-24 04:01:22,536 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-24 04:01:22,536 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-24 04:01:22,537 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-24 04:01:22,537 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2022-02-24 04:01:22,537 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-24 04:01:22,537 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=QVASR [2022-02-24 04:01:22,537 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-02-24 04:01:22,755 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-24 04:01:22,771 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-24 04:01:22,775 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-24 04:01:22,776 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-24 04:01:22,777 INFO L275 PluginConnector]: CDTParser initialized [2022-02-24 04:01:22,778 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-zilu/benchmark11_linear.i [2022-02-24 04:01:22,848 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e84c383b0/b349de9b00f746ddac8dd777fe3b67ca/FLAG194c5592d [2022-02-24 04:01:23,185 INFO L306 CDTParser]: Found 1 translation units. [2022-02-24 04:01:23,186 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-zilu/benchmark11_linear.i [2022-02-24 04:01:23,192 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e84c383b0/b349de9b00f746ddac8dd777fe3b67ca/FLAG194c5592d [2022-02-24 04:01:23,203 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e84c383b0/b349de9b00f746ddac8dd777fe3b67ca [2022-02-24 04:01:23,205 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-24 04:01:23,207 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-02-24 04:01:23,208 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-24 04:01:23,208 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-24 04:01:23,212 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-24 04:01:23,213 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 04:01:23" (1/1) ... [2022-02-24 04:01:23,213 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2577ec20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:01:23, skipping insertion in model container [2022-02-24 04:01:23,214 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 04:01:23" (1/1) ... [2022-02-24 04:01:23,218 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-24 04:01:23,229 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-24 04:01:23,358 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-zilu/benchmark11_linear.i[868,881] [2022-02-24 04:01:23,368 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-24 04:01:23,385 INFO L203 MainTranslator]: Completed pre-run [2022-02-24 04:01:23,396 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-zilu/benchmark11_linear.i[868,881] [2022-02-24 04:01:23,402 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-24 04:01:23,415 INFO L208 MainTranslator]: Completed translation [2022-02-24 04:01:23,416 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:01:23 WrapperNode [2022-02-24 04:01:23,416 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-24 04:01:23,417 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-24 04:01:23,417 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-24 04:01:23,417 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-24 04:01:23,428 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:01:23" (1/1) ... [2022-02-24 04:01:23,428 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:01:23" (1/1) ... [2022-02-24 04:01:23,434 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:01:23" (1/1) ... [2022-02-24 04:01:23,434 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:01:23" (1/1) ... [2022-02-24 04:01:23,438 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:01:23" (1/1) ... [2022-02-24 04:01:23,441 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:01:23" (1/1) ... [2022-02-24 04:01:23,446 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:01:23" (1/1) ... [2022-02-24 04:01:23,448 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-24 04:01:23,449 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-24 04:01:23,449 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-24 04:01:23,450 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-24 04:01:23,452 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:01:23" (1/1) ... [2022-02-24 04:01:23,458 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-24 04:01:23,467 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-24 04:01:23,485 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) [2022-02-24 04:01:23,499 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 [2022-02-24 04:01:23,525 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-02-24 04:01:23,525 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-24 04:01:23,525 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-02-24 04:01:23,525 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-02-24 04:01:23,526 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-02-24 04:01:23,526 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-02-24 04:01:23,526 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2022-02-24 04:01:23,526 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2022-02-24 04:01:23,526 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-02-24 04:01:23,526 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-24 04:01:23,526 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-02-24 04:01:23,527 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2022-02-24 04:01:23,527 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-02-24 04:01:23,527 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-02-24 04:01:23,527 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-02-24 04:01:23,527 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-24 04:01:23,528 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-24 04:01:23,528 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-02-24 04:01:23,529 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-02-24 04:01:23,529 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-02-24 04:01:23,587 INFO L234 CfgBuilder]: Building ICFG [2022-02-24 04:01:23,588 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-24 04:01:23,660 INFO L275 CfgBuilder]: Performing block encoding [2022-02-24 04:01:23,664 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-24 04:01:23,664 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-02-24 04:01:23,666 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 04:01:23 BoogieIcfgContainer [2022-02-24 04:01:23,666 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-24 04:01:23,668 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-24 04:01:23,668 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-24 04:01:23,679 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-24 04:01:23,680 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.02 04:01:23" (1/3) ... [2022-02-24 04:01:23,680 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f2276eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 04:01:23, skipping insertion in model container [2022-02-24 04:01:23,680 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:01:23" (2/3) ... [2022-02-24 04:01:23,681 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f2276eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 04:01:23, skipping insertion in model container [2022-02-24 04:01:23,681 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 04:01:23" (3/3) ... [2022-02-24 04:01:23,682 INFO L111 eAbstractionObserver]: Analyzing ICFG benchmark11_linear.i [2022-02-24 04:01:23,686 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-02-24 04:01:23,686 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-24 04:01:23,725 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-24 04:01:23,730 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=AcceleratedInterpolation, 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, mLoopAccelerationTechnique=QVASR [2022-02-24 04:01:23,731 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-02-24 04:01:23,741 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 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) [2022-02-24 04:01:23,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-02-24 04:01:23,747 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 04:01:23,748 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 04:01:23,748 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 04:01:23,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 04:01:23,753 INFO L85 PathProgramCache]: Analyzing trace with hash -304977768, now seen corresponding path program 1 times [2022-02-24 04:01:23,760 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 04:01:23,760 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [610515015] [2022-02-24 04:01:23,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 04:01:23,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 04:01:23,825 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 04:01:23,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:01:24,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 04:01:24,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:01:24,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 04:01:24,023 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 04:01:24,023 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [610515015] [2022-02-24 04:01:24,024 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [610515015] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 04:01:24,025 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 04:01:24,025 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-24 04:01:24,026 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32372738] [2022-02-24 04:01:24,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 04:01:24,029 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-24 04:01:24,030 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 04:01:24,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-24 04:01:24,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-24 04:01:24,088 INFO L87 Difference]: Start difference. First operand has 20 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 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 2.0) internal successors, (8), 3 states have internal predecessors, (8), 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) [2022-02-24 04:01:24,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 04:01:24,175 INFO L93 Difference]: Finished difference Result 33 states and 39 transitions. [2022-02-24 04:01:24,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-24 04:01:24,177 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 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 12 [2022-02-24 04:01:24,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 04:01:24,182 INFO L225 Difference]: With dead ends: 33 [2022-02-24 04:01:24,182 INFO L226 Difference]: Without dead ends: 14 [2022-02-24 04:01:24,185 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-02-24 04:01:24,189 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 12 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 28 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 [2022-02-24 04:01:24,189 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 28 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-24 04:01:24,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-02-24 04:01:24,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2022-02-24 04:01:24,216 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) [2022-02-24 04:01:24,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2022-02-24 04:01:24,218 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 12 [2022-02-24 04:01:24,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 04:01:24,219 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2022-02-24 04:01:24,219 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 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) [2022-02-24 04:01:24,219 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2022-02-24 04:01:24,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-02-24 04:01:24,220 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 04:01:24,220 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 04:01:24,220 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-24 04:01:24,220 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 04:01:24,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 04:01:24,221 INFO L85 PathProgramCache]: Analyzing trace with hash -828987386, now seen corresponding path program 1 times [2022-02-24 04:01:24,221 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 04:01:24,221 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1100116906] [2022-02-24 04:01:24,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 04:01:24,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 04:01:24,339 INFO L275 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-24 04:01:24,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:01:24,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 04:01:24,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:01:24,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 04:01:24,600 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 04:01:24,601 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1100116906] [2022-02-24 04:01:24,601 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1100116906] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 04:01:24,601 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 04:01:24,601 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-02-24 04:01:24,601 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794373035] [2022-02-24 04:01:24,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 04:01:24,602 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-24 04:01:24,602 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 04:01:24,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-24 04:01:24,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-02-24 04:01:24,603 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 6 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) [2022-02-24 04:01:24,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 04:01:24,696 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2022-02-24 04:01:24,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-24 04:01:24,696 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 6 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 [2022-02-24 04:01:24,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 04:01:24,697 INFO L225 Difference]: With dead ends: 14 [2022-02-24 04:01:24,697 INFO L226 Difference]: Without dead ends: 0 [2022-02-24 04:01:24,697 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2022-02-24 04:01:24,699 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 4 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 6 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-24 04:01:24,699 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 30 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 13 Invalid, 0 Unknown, 6 Unchecked, 0.0s Time] [2022-02-24 04:01:24,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-02-24 04:01:24,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-02-24 04:01:24,700 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) [2022-02-24 04:01:24,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-02-24 04:01:24,701 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2022-02-24 04:01:24,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 04:01:24,701 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-02-24 04:01:24,701 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 6 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) [2022-02-24 04:01:24,701 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-02-24 04:01:24,701 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-02-24 04:01:24,703 INFO L764 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-02-24 04:01:24,703 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-24 04:01:24,705 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-02-24 04:01:24,773 INFO L858 garLoopResultBuilder]: For program point reach_errorEXIT(line 11) no Hoare annotation was computed. [2022-02-24 04:01:24,773 INFO L858 garLoopResultBuilder]: For program point reach_errorENTRY(line 11) no Hoare annotation was computed. [2022-02-24 04:01:24,773 INFO L858 garLoopResultBuilder]: For program point L11-1(line 11) no Hoare annotation was computed. [2022-02-24 04:01:24,773 INFO L861 garLoopResultBuilder]: At program point mainENTRY(lines 19 28) the Hoare annotation is: true [2022-02-24 04:01:24,774 INFO L861 garLoopResultBuilder]: At program point L26(line 26) the Hoare annotation is: true [2022-02-24 04:01:24,774 INFO L861 garLoopResultBuilder]: At program point mainEXIT(lines 19 28) the Hoare annotation is: true [2022-02-24 04:01:24,774 INFO L861 garLoopResultBuilder]: At program point L22(line 22) the Hoare annotation is: true [2022-02-24 04:01:24,774 INFO L854 garLoopResultBuilder]: At program point L23-2(lines 23 25) the Hoare annotation is: (and (<= 1 main_~n~0) (<= main_~x~0 main_~n~0)) [2022-02-24 04:01:24,774 INFO L854 garLoopResultBuilder]: At program point L23-3(lines 23 25) the Hoare annotation is: (and (<= 1 main_~n~0) (not (< main_~x~0 main_~n~0)) (<= main_~x~0 main_~n~0)) [2022-02-24 04:01:24,774 INFO L861 garLoopResultBuilder]: At program point mainFINAL(lines 19 28) the Hoare annotation is: true [2022-02-24 04:01:24,775 INFO L861 garLoopResultBuilder]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2022-02-24 04:01:24,775 INFO L854 garLoopResultBuilder]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|)) [2022-02-24 04:01:24,775 INFO L861 garLoopResultBuilder]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2022-02-24 04:01:24,775 INFO L861 garLoopResultBuilder]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2022-02-24 04:01:24,775 INFO L861 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: true [2022-02-24 04:01:24,775 INFO L861 garLoopResultBuilder]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2022-02-24 04:01:24,775 INFO L861 garLoopResultBuilder]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2022-02-24 04:01:24,776 INFO L854 garLoopResultBuilder]: At program point L16(line 16) the Hoare annotation is: (forall ((v_main_~n~0_9 Int) (v_main_~x~0_14 Int)) (or (not (<= v_main_~x~0_14 v_main_~n~0_9)) (not (<= 1 v_main_~n~0_9)) (let ((.cse0 (= v_main_~x~0_14 v_main_~n~0_9))) (and (or (not (= |__VERIFIER_assert_#in~cond| 1)) (not .cse0)) (or (not (= |__VERIFIER_assert_#in~cond| 0)) .cse0))) (< v_main_~x~0_14 v_main_~n~0_9))) [2022-02-24 04:01:24,776 INFO L854 garLoopResultBuilder]: At program point L15(lines 15 17) the Hoare annotation is: (or (forall ((v_main_~n~0_9 Int) (v_main_~x~0_14 Int)) (or (not (<= v_main_~x~0_14 v_main_~n~0_9)) (not (<= 1 v_main_~n~0_9)) (let ((.cse0 (= v_main_~x~0_14 v_main_~n~0_9))) (and (or (not (= |__VERIFIER_assert_#in~cond| 1)) (not .cse0)) (or (not (= |__VERIFIER_assert_#in~cond| 0)) .cse0))) (< v_main_~x~0_14 v_main_~n~0_9))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2022-02-24 04:01:24,776 INFO L861 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 14 18) the Hoare annotation is: true [2022-02-24 04:01:24,776 INFO L861 garLoopResultBuilder]: At program point L15-2(lines 14 18) the Hoare annotation is: true [2022-02-24 04:01:24,776 INFO L861 garLoopResultBuilder]: At program point __VERIFIER_assertEXIT(lines 14 18) the Hoare annotation is: true [2022-02-24 04:01:24,777 INFO L854 garLoopResultBuilder]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 16) the Hoare annotation is: (forall ((v_main_~n~0_9 Int) (v_main_~x~0_14 Int)) (or (not (<= v_main_~x~0_14 v_main_~n~0_9)) (not (<= 1 v_main_~n~0_9)) (let ((.cse0 (= v_main_~x~0_14 v_main_~n~0_9))) (and (or (not (= |__VERIFIER_assert_#in~cond| 1)) (not .cse0)) (or (not (= |__VERIFIER_assert_#in~cond| 0)) .cse0))) (< v_main_~x~0_14 v_main_~n~0_9))) [2022-02-24 04:01:24,779 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2022-02-24 04:01:24,780 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-02-24 04:01:24,796 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.02 04:01:24 BoogieIcfgContainer [2022-02-24 04:01:24,796 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-02-24 04:01:24,797 INFO L158 Benchmark]: Toolchain (without parser) took 1589.89ms. Allocated memory was 183.5MB in the beginning and 235.9MB in the end (delta: 52.4MB). Free memory was 126.5MB in the beginning and 144.5MB in the end (delta: -18.0MB). Peak memory consumption was 33.8MB. Max. memory is 8.0GB. [2022-02-24 04:01:24,798 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 183.5MB. Free memory is still 142.5MB. There was no memory consumed. Max. memory is 8.0GB. [2022-02-24 04:01:24,804 INFO L158 Benchmark]: CACSL2BoogieTranslator took 208.22ms. Allocated memory was 183.5MB in the beginning and 235.9MB in the end (delta: 52.4MB). Free memory was 126.4MB in the beginning and 207.4MB in the end (delta: -81.0MB). Peak memory consumption was 10.2MB. Max. memory is 8.0GB. [2022-02-24 04:01:24,808 INFO L158 Benchmark]: Boogie Preprocessor took 30.96ms. Allocated memory is still 235.9MB. Free memory was 207.4MB in the beginning and 205.8MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-02-24 04:01:24,808 INFO L158 Benchmark]: RCFGBuilder took 217.08ms. Allocated memory is still 235.9MB. Free memory was 205.8MB in the beginning and 195.3MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-02-24 04:01:24,809 INFO L158 Benchmark]: TraceAbstraction took 1128.40ms. Allocated memory is still 235.9MB. Free memory was 194.8MB in the beginning and 144.5MB in the end (delta: 50.3MB). Peak memory consumption was 50.3MB. Max. memory is 8.0GB. [2022-02-24 04:01:24,812 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 183.5MB. Free memory is still 142.5MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 208.22ms. Allocated memory was 183.5MB in the beginning and 235.9MB in the end (delta: 52.4MB). Free memory was 126.4MB in the beginning and 207.4MB in the end (delta: -81.0MB). Peak memory consumption was 10.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 30.96ms. Allocated memory is still 235.9MB. Free memory was 207.4MB in the beginning and 205.8MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 217.08ms. Allocated memory is still 235.9MB. Free memory was 205.8MB in the beginning and 195.3MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * TraceAbstraction took 1128.40ms. Allocated memory is still 235.9MB. Free memory was 194.8MB in the beginning and 144.5MB in the end (delta: 50.3MB). Peak memory consumption was 50.3MB. 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: 16]: 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 5 procedures, 23 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.1s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 17 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 16 mSDsluCounter, 58 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 6 IncrementalHoareTripleChecker+Unchecked, 31 mSDsCounter, 9 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 31 IncrementalHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 9 mSolverCounterUnsat, 27 mSDtfsCounter, 31 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=0, InterpolantAutomatonStates: 12, 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, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 20 LocationsWithAnnotation, 26 PreInvPairs, 35 NumberOfFragments, 136 HoareAnnotationTreeSize, 26 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 20 FomulaSimplificationsInter, 98 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: 23]: Loop Invariant Derived loop invariant: 1 <= n && x <= n - ProcedureContractResult [Line: 19]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 14]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert: 1 RESULT: Ultimate proved your program to be correct! [2022-02-24 04:01:24,842 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...