/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/AutomizerCTransformed.xml -s ../../../trunk/examples/settings/loopacceleration/qvasr/qvasr_64.epf -i ../../../trunk/examples/svcomp/loop-zilu/benchmark26_linear.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-34549b5 [2022-04-06 10:41:26,561 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-06 10:41:26,563 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-06 10:41:26,589 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-04-06 10:41:26,607 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-06 10:41:26,608 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-06 10:41:26,609 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-06 10:41:26,610 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-06 10:41:26,610 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-06 10:41:26,611 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-06 10:41:26,614 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-06 10:41:26,618 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-06 10:41:26,619 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-06 10:41:26,620 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-06 10:41:26,621 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-06 10:41:26,621 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-06 10:41:26,622 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-06 10:41:26,627 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-04-06 10:41:26,632 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-06 10:41:26,633 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-06 10:41:26,634 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-06 10:41:26,635 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/loopacceleration/qvasr/qvasr_64.epf [2022-04-06 10:41:26,663 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-06 10:41:26,663 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-06 10:41:26,664 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-04-06 10:41:26,664 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-04-06 10:41:26,664 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-04-06 10:41:26,665 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-04-06 10:41:26,665 INFO L138 SettingsManager]: * Use SBE=true [2022-04-06 10:41:26,665 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-06 10:41:26,665 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-06 10:41:26,665 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-06 10:41:26,666 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-06 10:41:26,666 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-06 10:41:26,666 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-06 10:41:26,666 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-06 10:41:26,666 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-06 10:41:26,666 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-06 10:41:26,666 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-06 10:41:26,666 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-06 10:41:26,666 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-06 10:41:26,666 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-06 10:41:26,666 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-06 10:41:26,666 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-04-06 10:41:26,667 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-04-06 10:41:26,667 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-04-06 10:41:26,667 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-04-06 10:41:26,667 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-06 10:41:26,667 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-04-06 10:41:26,667 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-04-06 10:41:26,668 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-04-06 10:41:26,668 INFO L138 SettingsManager]: * TransformationType=LOOP_ACCELERATION_QVASR 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-04-06 10:41:26,863 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-06 10:41:26,880 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-06 10:41:26,881 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-06 10:41:26,882 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-06 10:41:26,882 INFO L275 PluginConnector]: CDTParser initialized [2022-04-06 10:41:26,883 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-zilu/benchmark26_linear.i [2022-04-06 10:41:26,930 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1ed32770d/7d002c48934e49e181d994ce03912793/FLAGc3dc743ee [2022-04-06 10:41:27,286 INFO L306 CDTParser]: Found 1 translation units. [2022-04-06 10:41:27,286 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-zilu/benchmark26_linear.i [2022-04-06 10:41:27,290 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1ed32770d/7d002c48934e49e181d994ce03912793/FLAGc3dc743ee [2022-04-06 10:41:27,298 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1ed32770d/7d002c48934e49e181d994ce03912793 [2022-04-06 10:41:27,300 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-06 10:41:27,301 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-04-06 10:41:27,302 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-06 10:41:27,302 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-06 10:41:27,304 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-06 10:41:27,304 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.04 10:41:27" (1/1) ... [2022-04-06 10:41:27,305 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5170cf40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 10:41:27, skipping insertion in model container [2022-04-06 10:41:27,305 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.04 10:41:27" (1/1) ... [2022-04-06 10:41:27,312 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-06 10:41:27,329 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-06 10:41:27,452 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/benchmark26_linear.i[868,881] [2022-04-06 10:41:27,462 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-06 10:41:27,467 INFO L203 MainTranslator]: Completed pre-run [2022-04-06 10:41:27,475 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/benchmark26_linear.i[868,881] [2022-04-06 10:41:27,476 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-06 10:41:27,487 INFO L208 MainTranslator]: Completed translation [2022-04-06 10:41:27,488 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 10:41:27 WrapperNode [2022-04-06 10:41:27,488 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-06 10:41:27,489 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-06 10:41:27,489 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-06 10:41:27,489 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-06 10:41:27,498 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 10:41:27" (1/1) ... [2022-04-06 10:41:27,498 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 10:41:27" (1/1) ... [2022-04-06 10:41:27,502 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 10:41:27" (1/1) ... [2022-04-06 10:41:27,503 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 10:41:27" (1/1) ... [2022-04-06 10:41:27,505 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 10:41:27" (1/1) ... [2022-04-06 10:41:27,507 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 10:41:27" (1/1) ... [2022-04-06 10:41:27,508 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 10:41:27" (1/1) ... [2022-04-06 10:41:27,509 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-06 10:41:27,509 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-06 10:41:27,509 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-06 10:41:27,509 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-06 10:41:27,510 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 10:41:27" (1/1) ... [2022-04-06 10:41:27,520 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-06 10:41:27,533 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 10:41:27,542 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) [2022-04-06 10:41:27,543 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 [2022-04-06 10:41:27,576 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-04-06 10:41:27,576 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-06 10:41:27,576 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-04-06 10:41:27,576 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-04-06 10:41:27,576 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-04-06 10:41:27,576 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-04-06 10:41:27,577 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2022-04-06 10:41:27,577 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2022-04-06 10:41:27,577 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-04-06 10:41:27,577 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-06 10:41:27,577 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-04-06 10:41:27,577 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2022-04-06 10:41:27,577 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-04-06 10:41:27,577 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-04-06 10:41:27,577 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-04-06 10:41:27,577 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-06 10:41:27,577 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-06 10:41:27,577 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-06 10:41:27,577 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-06 10:41:27,578 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-06 10:41:27,620 INFO L234 CfgBuilder]: Building ICFG [2022-04-06 10:41:27,621 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-06 10:41:27,690 INFO L275 CfgBuilder]: Performing block encoding [2022-04-06 10:41:27,693 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-06 10:41:27,693 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-04-06 10:41:27,695 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.04 10:41:27 BoogieIcfgContainer [2022-04-06 10:41:27,695 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-06 10:41:27,695 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-04-06 10:41:27,695 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-04-06 10:41:27,696 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-04-06 10:41:27,698 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.04 10:41:27" (1/1) ... [2022-04-06 10:41:27,700 INFO L168 ansformationObserver]: Applying ICFG transformation LOOP_ACCELERATION_QVASR [2022-04-06 10:41:27,709 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 06.04 10:41:27 BasicIcfg [2022-04-06 10:41:27,709 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-04-06 10:41:27,710 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-06 10:41:27,710 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-06 10:41:27,712 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-06 10:41:27,712 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.04 10:41:27" (1/4) ... [2022-04-06 10:41:27,713 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73b9a5db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.04 10:41:27, skipping insertion in model container [2022-04-06 10:41:27,713 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 10:41:27" (2/4) ... [2022-04-06 10:41:27,713 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73b9a5db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.04 10:41:27, skipping insertion in model container [2022-04-06 10:41:27,713 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.04 10:41:27" (3/4) ... [2022-04-06 10:41:27,713 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73b9a5db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.04 10:41:27, skipping insertion in model container [2022-04-06 10:41:27,713 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 06.04 10:41:27" (4/4) ... [2022-04-06 10:41:27,714 INFO L111 eAbstractionObserver]: Analyzing ICFG benchmark26_linear.iqvasr [2022-04-06 10:41:27,717 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-04-06 10:41:27,718 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-04-06 10:41:27,796 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-06 10:41:27,804 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP [2022-04-06 10:41:27,804 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-04-06 10:41:27,816 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) [2022-04-06 10:41:27,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-04-06 10:41:27,819 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 10:41:27,820 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 10:41:27,820 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 10:41:27,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 10:41:27,824 INFO L85 PathProgramCache]: Analyzing trace with hash 1809217115, now seen corresponding path program 1 times [2022-04-06 10:41:27,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 10:41:27,830 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882206343] [2022-04-06 10:41:27,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 10:41:27,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 10:41:27,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 10:41:27,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 10:41:27,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 10:41:27,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 10:41:27,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 10:41:27,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882206343] [2022-04-06 10:41:27,996 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882206343] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 10:41:27,997 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 10:41:27,997 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-06 10:41:27,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589132854] [2022-04-06 10:41:27,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 10:41:28,004 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-06 10:41:28,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 10:41:28,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-06 10:41:28,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-06 10:41:28,030 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 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 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) [2022-04-06 10:41:28,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 10:41:28,066 INFO L93 Difference]: Finished difference Result 32 states and 36 transitions. [2022-04-06 10:41:28,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-06 10:41:28,068 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 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 [2022-04-06 10:41:28,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 10:41:28,073 INFO L225 Difference]: With dead ends: 32 [2022-04-06 10:41:28,073 INFO L226 Difference]: Without dead ends: 13 [2022-04-06 10:41:28,076 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-06 10:41:28,080 INFO L913 BasicCegarLoop]: 20 mSDtfsCounter, 12 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-06 10:41:28,082 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 23 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-06 10:41:28,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2022-04-06 10:41:28,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2022-04-06 10:41:28,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 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) [2022-04-06 10:41:28,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2022-04-06 10:41:28,110 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 12 [2022-04-06 10:41:28,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 10:41:28,110 INFO L478 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2022-04-06 10:41:28,111 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 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) [2022-04-06 10:41:28,111 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2022-04-06 10:41:28,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-04-06 10:41:28,111 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 10:41:28,112 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 10:41:28,112 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-06 10:41:28,112 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 10:41:28,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 10:41:28,115 INFO L85 PathProgramCache]: Analyzing trace with hash 1810140636, now seen corresponding path program 1 times [2022-04-06 10:41:28,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 10:41:28,115 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335089926] [2022-04-06 10:41:28,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 10:41:28,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 10:41:28,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 10:41:28,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 10:41:28,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 10:41:28,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 10:41:28,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 10:41:28,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335089926] [2022-04-06 10:41:28,161 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335089926] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 10:41:28,161 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 10:41:28,161 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-06 10:41:28,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246725989] [2022-04-06 10:41:28,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 10:41:28,162 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-04-06 10:41:28,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 10:41:28,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-04-06 10:41:28,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-06 10:41:28,163 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. 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) [2022-04-06 10:41:28,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 10:41:28,187 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2022-04-06 10:41:28,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-06 10:41:28,190 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 [2022-04-06 10:41:28,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 10:41:28,191 INFO L225 Difference]: With dead ends: 19 [2022-04-06 10:41:28,191 INFO L226 Difference]: Without dead ends: 14 [2022-04-06 10:41:28,191 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-04-06 10:41:28,192 INFO L913 BasicCegarLoop]: 12 mSDtfsCounter, 7 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-06 10:41:28,193 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 19 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-06 10:41:28,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-04-06 10:41:28,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2022-04-06 10:41:28,196 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) [2022-04-06 10:41:28,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2022-04-06 10:41:28,196 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 12 [2022-04-06 10:41:28,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 10:41:28,196 INFO L478 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2022-04-06 10:41:28,196 INFO L479 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) [2022-04-06 10:41:28,197 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2022-04-06 10:41:28,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-04-06 10:41:28,197 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 10:41:28,197 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 10:41:28,197 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-04-06 10:41:28,197 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 10:41:28,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 10:41:28,198 INFO L85 PathProgramCache]: Analyzing trace with hash 306506437, now seen corresponding path program 1 times [2022-04-06 10:41:28,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 10:41:28,198 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93329586] [2022-04-06 10:41:28,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 10:41:28,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 10:41:28,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 10:41:28,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 10:41:28,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 10:41:28,294 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 10:41:28,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 10:41:28,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93329586] [2022-04-06 10:41:28,294 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93329586] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 10:41:28,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1405863112] [2022-04-06 10:41:28,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 10:41:28,295 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 10:41:28,295 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 10:41:28,296 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 10:41:28,297 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-04-06 10:41:28,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 10:41:28,331 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 6 conjunts are in the unsatisfiable core [2022-04-06 10:41:28,334 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 10:41:28,501 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 10:41:28,502 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 10:41:28,572 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 10:41:28,573 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1405863112] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 10:41:28,573 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 10:41:28,573 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 10 [2022-04-06 10:41:28,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286330379] [2022-04-06 10:41:28,576 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-06 10:41:28,577 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-04-06 10:41:28,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 10:41:28,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-04-06 10:41:28,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-04-06 10:41:28,578 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand has 10 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 7 states have internal predecessors, (12), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 10:41:28,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 10:41:28,633 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2022-04-06 10:41:28,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-04-06 10:41:28,633 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 7 states have internal predecessors, (12), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2022-04-06 10:41:28,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 10:41:28,634 INFO L225 Difference]: With dead ends: 14 [2022-04-06 10:41:28,634 INFO L226 Difference]: Without dead ends: 0 [2022-04-06 10:41:28,634 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 20 SyntacticMatches, 6 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2022-04-06 10:41:28,635 INFO L913 BasicCegarLoop]: 8 mSDtfsCounter, 6 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-06 10:41:28,635 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 35 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-06 10:41:28,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-04-06 10:41:28,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-04-06 10:41:28,636 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) [2022-04-06 10:41:28,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-04-06 10:41:28,636 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2022-04-06 10:41:28,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 10:41:28,636 INFO L478 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-04-06 10:41:28,637 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 7 states have internal predecessors, (12), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 10:41:28,637 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-04-06 10:41:28,637 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-06 10:41:28,639 INFO L788 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-04-06 10:41:28,656 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-04-06 10:41:28,856 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 10:41:28,857 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-04-06 10:41:28,894 INFO L878 garLoopResultBuilder]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|)) [2022-04-06 10:41:28,894 INFO L882 garLoopResultBuilder]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2022-04-06 10:41:28,894 INFO L882 garLoopResultBuilder]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2022-04-06 10:41:28,894 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2022-04-06 10:41:28,895 INFO L885 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: true [2022-04-06 10:41:28,895 INFO L882 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-04-06 10:41:28,895 INFO L882 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-04-06 10:41:28,895 INFO L885 garLoopResultBuilder]: At program point mainENTRY(lines 19 28) the Hoare annotation is: true [2022-04-06 10:41:28,895 INFO L882 garLoopResultBuilder]: For program point L22(line 22) no Hoare annotation was computed. [2022-04-06 10:41:28,895 INFO L882 garLoopResultBuilder]: For program point mainFINAL(lines 19 28) no Hoare annotation was computed. [2022-04-06 10:41:28,896 INFO L878 garLoopResultBuilder]: At program point L23-2(lines 23 25) the Hoare annotation is: (< main_~x~0 (+ main_~y~0 1)) [2022-04-06 10:41:28,896 INFO L882 garLoopResultBuilder]: For program point mainEXIT(lines 19 28) no Hoare annotation was computed. [2022-04-06 10:41:28,896 INFO L878 garLoopResultBuilder]: At program point L23-3(lines 23 25) the Hoare annotation is: (and (< main_~x~0 (+ main_~y~0 1)) (<= main_~y~0 main_~x~0)) [2022-04-06 10:41:28,896 INFO L882 garLoopResultBuilder]: For program point L26(line 26) no Hoare annotation was computed. [2022-04-06 10:41:28,896 INFO L885 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 14 18) the Hoare annotation is: true [2022-04-06 10:41:28,896 INFO L882 garLoopResultBuilder]: For program point L15(lines 15 17) no Hoare annotation was computed. [2022-04-06 10:41:28,896 INFO L882 garLoopResultBuilder]: For program point L16(line 16) no Hoare annotation was computed. [2022-04-06 10:41:28,897 INFO L882 garLoopResultBuilder]: For program point L15-2(lines 14 18) no Hoare annotation was computed. [2022-04-06 10:41:28,897 INFO L882 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 16) no Hoare annotation was computed. [2022-04-06 10:41:28,897 INFO L882 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 14 18) no Hoare annotation was computed. [2022-04-06 10:41:28,902 INFO L719 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-04-06 10:41:28,904 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-04-06 10:41:28,917 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.04 10:41:28 BasicIcfg [2022-04-06 10:41:28,917 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-04-06 10:41:28,918 INFO L158 Benchmark]: Toolchain (without parser) took 1616.97ms. Allocated memory was 192.9MB in the beginning and 333.4MB in the end (delta: 140.5MB). Free memory was 133.7MB in the beginning and 232.1MB in the end (delta: -98.4MB). Peak memory consumption was 42.3MB. Max. memory is 8.0GB. [2022-04-06 10:41:28,918 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 192.9MB. Free memory is still 149.8MB. There was no memory consumed. Max. memory is 8.0GB. [2022-04-06 10:41:28,918 INFO L158 Benchmark]: CACSL2BoogieTranslator took 186.29ms. Allocated memory was 192.9MB in the beginning and 333.4MB in the end (delta: 140.5MB). Free memory was 133.5MB in the beginning and 302.9MB in the end (delta: -169.4MB). Peak memory consumption was 7.0MB. Max. memory is 8.0GB. [2022-04-06 10:41:28,919 INFO L158 Benchmark]: Boogie Preprocessor took 20.01ms. Allocated memory is still 333.4MB. Free memory was 302.9MB in the beginning and 301.8MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-04-06 10:41:28,919 INFO L158 Benchmark]: RCFGBuilder took 185.62ms. Allocated memory is still 333.4MB. Free memory was 301.8MB in the beginning and 291.9MB in the end (delta: 10.0MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2022-04-06 10:41:28,919 INFO L158 Benchmark]: IcfgTransformer took 13.91ms. Allocated memory is still 333.4MB. Free memory was 291.9MB in the beginning and 290.8MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-04-06 10:41:28,920 INFO L158 Benchmark]: TraceAbstraction took 1207.25ms. Allocated memory is still 333.4MB. Free memory was 290.3MB in the beginning and 232.1MB in the end (delta: 58.2MB). Peak memory consumption was 58.7MB. Max. memory is 8.0GB. [2022-04-06 10:41:28,921 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 192.9MB. Free memory is still 149.8MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 186.29ms. Allocated memory was 192.9MB in the beginning and 333.4MB in the end (delta: 140.5MB). Free memory was 133.5MB in the beginning and 302.9MB in the end (delta: -169.4MB). Peak memory consumption was 7.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 20.01ms. Allocated memory is still 333.4MB. Free memory was 302.9MB in the beginning and 301.8MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 185.62ms. Allocated memory is still 333.4MB. Free memory was 301.8MB in the beginning and 291.9MB in the end (delta: 10.0MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * IcfgTransformer took 13.91ms. Allocated memory is still 333.4MB. Free memory was 291.9MB in the beginning and 290.8MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * TraceAbstraction took 1207.25ms. Allocated memory is still 333.4MB. Free memory was 290.3MB in the beginning and 232.1MB in the end (delta: 58.2MB). Peak memory consumption was 58.7MB. 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 4 procedures, 20 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.1s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 26 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 25 mSDsluCounter, 77 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 37 mSDsCounter, 11 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 41 IncrementalHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 11 mSolverCounterUnsat, 40 mSDtfsCounter, 41 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 49 GetRequests, 26 SyntacticMatches, 6 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=0, InterpolantAutomatonStates: 15, 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, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 9 PreInvPairs, 11 NumberOfFragments, 25 HoareAnnotationTreeSize, 9 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 6 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 50 NumberOfCodeBlocks, 50 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 58 ConstructedInterpolants, 0 QuantifiedInterpolants, 142 SizeOfPredicates, 3 NumberOfNonLiveVariables, 57 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 5 InterpolantComputations, 2 PerfectInterpolantSequences, 0/3 InterpolantCoveringCapability, 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: x < y + 1 RESULT: Ultimate proved your program to be correct! [2022-04-06 10:41:28,961 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...