/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/automizer/LoopAccelerationJordanC.epf -i ../../../trunk/examples/svcomp/loop-lit/hhk2008.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-7968f31 [2022-03-17 15:01:53,326 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-17 15:01:53,327 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-17 15:01:53,352 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-03-17 15:01:53,357 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-17 15:01:53,358 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-17 15:01:53,358 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-17 15:01:53,359 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-17 15:01:53,360 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-17 15:01:53,360 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-17 15:01:53,361 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-17 15:01:53,362 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-17 15:01:53,364 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-03-17 15:01:53,365 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-17 15:01:53,366 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-17 15:01:53,366 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-17 15:01:53,367 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-17 15:01:53,369 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-03-17 15:01:53,375 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2022-03-17 15:01:53,381 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-17 15:01:53,381 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-17 15:01:53,382 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-17 15:01:53,382 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-17 15:01:53,382 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-17 15:01:53,382 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-17 15:01:53,382 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-17 15:01:53,382 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-17 15:01:53,382 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-17 15:01:53,383 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-17 15:01:53,383 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-17 15:01:53,383 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-17 15:01:53,383 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-17 15:01:53,383 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-17 15:01:53,383 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-17 15:01:53,383 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-17 15:01:53,384 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-17 15:01:53,384 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-17 15:01:53,384 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-17 15:01:53,384 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-17 15:01:53,384 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-17 15:01:53,384 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-03-17 15:01:53,385 INFO L138 SettingsManager]: * TransformationType=LOOP_ACCELERATION_JORDAN 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-03-17 15:01:53,545 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-17 15:01:53,565 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-17 15:01:53,567 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-17 15:01:53,568 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-17 15:01:53,569 INFO L275 PluginConnector]: CDTParser initialized [2022-03-17 15:01:53,570 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/hhk2008.i [2022-03-17 15:01:53,614 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d82c25693/0b743e38f18942de82d646cfe6698784/FLAG33fcf5bb3 [2022-03-17 15:01:53,918 INFO L306 CDTParser]: Found 1 translation units. [2022-03-17 15:01:53,918 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/hhk2008.i [2022-03-17 15:01:53,923 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d82c25693/0b743e38f18942de82d646cfe6698784/FLAG33fcf5bb3 [2022-03-17 15:01:54,348 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d82c25693/0b743e38f18942de82d646cfe6698784 [2022-03-17 15:01:54,349 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-17 15:01:54,351 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-03-17 15:01:54,353 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-17 15:01:54,353 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-17 15:01:54,355 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-17 15:01:54,356 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 03:01:54" (1/1) ... [2022-03-17 15:01:54,356 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c8a9404 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 03:01:54, skipping insertion in model container [2022-03-17 15:01:54,356 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 03:01:54" (1/1) ... [2022-03-17 15:01:54,361 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-17 15:01:54,371 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-17 15:01:54,483 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-lit/hhk2008.i[895,908] [2022-03-17 15:01:54,489 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-17 15:01:54,494 INFO L203 MainTranslator]: Completed pre-run [2022-03-17 15:01:54,501 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-lit/hhk2008.i[895,908] [2022-03-17 15:01:54,503 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-17 15:01:54,511 INFO L208 MainTranslator]: Completed translation [2022-03-17 15:01:54,512 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 03:01:54 WrapperNode [2022-03-17 15:01:54,512 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-17 15:01:54,512 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-17 15:01:54,512 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-17 15:01:54,512 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-17 15:01:54,518 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 03:01:54" (1/1) ... [2022-03-17 15:01:54,519 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 03:01:54" (1/1) ... [2022-03-17 15:01:54,522 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 03:01:54" (1/1) ... [2022-03-17 15:01:54,522 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 03:01:54" (1/1) ... [2022-03-17 15:01:54,525 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 03:01:54" (1/1) ... [2022-03-17 15:01:54,527 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 03:01:54" (1/1) ... [2022-03-17 15:01:54,527 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 03:01:54" (1/1) ... [2022-03-17 15:01:54,528 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-17 15:01:54,529 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-17 15:01:54,529 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-17 15:01:54,529 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-17 15:01:54,530 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 03:01:54" (1/1) ... [2022-03-17 15:01:54,534 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-17 15:01:54,541 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-17 15:01:54,550 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) [2022-03-17 15:01:54,551 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 [2022-03-17 15:01:54,574 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-03-17 15:01:54,574 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-17 15:01:54,574 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-03-17 15:01:54,575 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-03-17 15:01:54,575 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-03-17 15:01:54,575 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-03-17 15:01:54,575 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-03-17 15:01:54,575 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-03-17 15:01:54,575 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2022-03-17 15:01:54,575 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2022-03-17 15:01:54,575 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-03-17 15:01:54,575 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-17 15:01:54,575 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-03-17 15:01:54,575 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-03-17 15:01:54,576 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-03-17 15:01:54,576 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-03-17 15:01:54,576 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-03-17 15:01:54,576 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-17 15:01:54,576 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-17 15:01:54,576 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-17 15:01:54,576 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-17 15:01:54,576 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-17 15:01:54,623 INFO L234 CfgBuilder]: Building ICFG [2022-03-17 15:01:54,624 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-17 15:01:54,742 INFO L275 CfgBuilder]: Performing block encoding [2022-03-17 15:01:54,746 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-17 15:01:54,746 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-03-17 15:01:54,747 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.03 03:01:54 BoogieIcfgContainer [2022-03-17 15:01:54,747 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-17 15:01:54,748 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-03-17 15:01:54,748 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-03-17 15:01:54,764 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-03-17 15:01:54,766 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.03 03:01:54" (1/1) ... [2022-03-17 15:01:54,960 INFO L89 elerationTransformer]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1, 2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-03-17 15:01:54,961 INFO L91 elerationTransformer]: Accelerated Formula: (and (= v_main_~cnt~0_1 (+ (- 1) v_main_~cnt~0_2)) (< 0 v_main_~cnt~0_2) (= (+ v_main_~res~0_2 1) v_main_~res~0_1)) InVars {main_~res~0=v_main_~res~0_2, main_~cnt~0=v_main_~cnt~0_2} OutVars{main_~res~0=v_main_~res~0_1, main_~cnt~0=v_main_~cnt~0_1} AuxVars[] AssignedVars[main_~res~0, main_~cnt~0] to Formula: (or (and (< v_main_~res~0_2 v_main_~res~0_1) (= (+ v_main_~cnt~0_1 v_main_~res~0_1) (+ v_main_~cnt~0_2 v_main_~res~0_2)) (< v_main_~res~0_1 (+ v_main_~cnt~0_2 v_main_~res~0_2 1))) (and (<= v_main_~cnt~0_2 0) (= v_main_~res~0_2 v_main_~res~0_1) (= v_main_~cnt~0_2 v_main_~cnt~0_1))) InVars {main_~res~0=v_main_~res~0_2, main_~cnt~0=v_main_~cnt~0_2} OutVars{main_~res~0=v_main_~res~0_1, main_~cnt~0=v_main_~cnt~0_1} AuxVars[] AssignedVars[main_~res~0, main_~cnt~0] [2022-03-17 15:01:54,964 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 17.03 03:01:54 BasicIcfg [2022-03-17 15:01:54,965 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-03-17 15:01:54,966 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-17 15:01:54,966 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-17 15:01:54,970 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-17 15:01:54,970 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.03 03:01:54" (1/4) ... [2022-03-17 15:01:54,971 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d342559 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 03:01:54, skipping insertion in model container [2022-03-17 15:01:54,971 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 03:01:54" (2/4) ... [2022-03-17 15:01:54,971 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d342559 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 03:01:54, skipping insertion in model container [2022-03-17 15:01:54,971 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.03 03:01:54" (3/4) ... [2022-03-17 15:01:54,973 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d342559 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.03 03:01:54, skipping insertion in model container [2022-03-17 15:01:54,973 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 17.03 03:01:54" (4/4) ... [2022-03-17 15:01:54,974 INFO L111 eAbstractionObserver]: Analyzing ICFG hhk2008.iJordan [2022-03-17 15:01:54,979 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2022-03-17 15:01:54,979 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-17 15:01:55,013 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-17 15:01:55,020 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=ForwardPredicates, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP [2022-03-17 15:01:55,020 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-03-17 15:01:55,031 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 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) [2022-03-17 15:01:55,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-03-17 15:01:55,036 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 15:01:55,036 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 15:01:55,036 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 15:01:55,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 15:01:55,040 INFO L85 PathProgramCache]: Analyzing trace with hash 96256690, now seen corresponding path program 1 times [2022-03-17 15:01:55,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 15:01:55,046 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852195218] [2022-03-17 15:01:55,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 15:01:55,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 15:01:55,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 15:01:55,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 15:01:55,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 15:01:55,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 15:01:55,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 15:01:55,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852195218] [2022-03-17 15:01:55,169 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852195218] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 15:01:55,169 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 15:01:55,169 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-17 15:01:55,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486446952] [2022-03-17 15:01:55,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 15:01:55,173 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-17 15:01:55,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 15:01:55,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-17 15:01:55,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-17 15:01:55,200 INFO L87 Difference]: Start difference. First operand has 21 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 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 3.0) internal successors, (9), 2 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) [2022-03-17 15:01:55,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 15:01:55,223 INFO L93 Difference]: Finished difference Result 21 states and 23 transitions. [2022-03-17 15:01:55,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-17 15:01:55,225 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 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 [2022-03-17 15:01:55,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 15:01:55,239 INFO L225 Difference]: With dead ends: 21 [2022-03-17 15:01:55,239 INFO L226 Difference]: Without dead ends: 14 [2022-03-17 15:01:55,240 INFO L911 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 [2022-03-17 15:01:55,244 INFO L912 BasicCegarLoop]: 22 mSDtfsCounter, 14 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 25 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 [2022-03-17 15:01:55,245 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 25 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-17 15:01:55,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-03-17 15:01:55,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2022-03-17 15:01:55,264 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) [2022-03-17 15:01:55,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2022-03-17 15:01:55,266 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 13 [2022-03-17 15:01:55,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 15:01:55,266 INFO L478 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2022-03-17 15:01:55,267 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 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) [2022-03-17 15:01:55,267 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2022-03-17 15:01:55,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-03-17 15:01:55,268 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 15:01:55,268 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 15:01:55,268 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-17 15:01:55,269 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 15:01:55,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 15:01:55,271 INFO L85 PathProgramCache]: Analyzing trace with hash 97180211, now seen corresponding path program 1 times [2022-03-17 15:01:55,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 15:01:55,271 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312992829] [2022-03-17 15:01:55,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 15:01:55,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 15:01:55,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 15:01:55,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 15:01:55,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 15:01:55,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 15:01:55,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 15:01:55,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312992829] [2022-03-17 15:01:55,424 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312992829] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 15:01:55,424 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 15:01:55,424 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-17 15:01:55,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082190563] [2022-03-17 15:01:55,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 15:01:55,426 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-17 15:01:55,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 15:01:55,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-17 15:01:55,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-03-17 15:01:55,428 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand has 7 states, 6 states have (on average 1.5) internal successors, (9), 5 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) [2022-03-17 15:01:55,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 15:01:55,506 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2022-03-17 15:01:55,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-17 15:01:55,506 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 5 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 [2022-03-17 15:01:55,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 15:01:55,507 INFO L225 Difference]: With dead ends: 18 [2022-03-17 15:01:55,507 INFO L226 Difference]: Without dead ends: 15 [2022-03-17 15:01:55,510 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2022-03-17 15:01:55,512 INFO L912 BasicCegarLoop]: 11 mSDtfsCounter, 12 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-17 15:01:55,512 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 28 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-17 15:01:55,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2022-03-17 15:01:55,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2022-03-17 15:01:55,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 10 states have (on average 1.1) internal successors, (11), 10 states have internal predecessors, (11), 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) [2022-03-17 15:01:55,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2022-03-17 15:01:55,518 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 13 [2022-03-17 15:01:55,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 15:01:55,520 INFO L478 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2022-03-17 15:01:55,520 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 5 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) [2022-03-17 15:01:55,520 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2022-03-17 15:01:55,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-03-17 15:01:55,521 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 15:01:55,521 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 15:01:55,521 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-17 15:01:55,521 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 15:01:55,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 15:01:55,521 INFO L85 PathProgramCache]: Analyzing trace with hash -1255659171, now seen corresponding path program 1 times [2022-03-17 15:01:55,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 15:01:55,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753997015] [2022-03-17 15:01:55,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 15:01:55,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 15:01:55,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 15:01:55,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 15:01:55,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 15:01:55,623 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 15:01:55,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 15:01:55,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753997015] [2022-03-17 15:01:55,624 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753997015] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-17 15:01:55,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1949929805] [2022-03-17 15:01:55,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 15:01:55,624 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-17 15:01:55,624 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-17 15:01:55,626 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) [2022-03-17 15:01:55,627 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-03-17 15:01:55,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 15:01:55,667 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 10 conjunts are in the unsatisfiable core [2022-03-17 15:01:55,670 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-17 15:01:55,938 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 15:01:55,938 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-17 15:01:56,103 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 15:01:56,103 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1949929805] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-17 15:01:56,104 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-17 15:01:56,104 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 15 [2022-03-17 15:01:56,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991538001] [2022-03-17 15:01:56,104 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-17 15:01:56,104 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-03-17 15:01:56,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 15:01:56,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-03-17 15:01:56,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2022-03-17 15:01:56,105 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 15 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 12 states have internal predecessors, (19), 3 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 15:01:56,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 15:01:56,202 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2022-03-17 15:01:56,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-17 15:01:56,202 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 12 states have internal predecessors, (19), 3 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2022-03-17 15:01:56,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 15:01:56,202 INFO L225 Difference]: With dead ends: 13 [2022-03-17 15:01:56,203 INFO L226 Difference]: Without dead ends: 0 [2022-03-17 15:01:56,203 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 21 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=88, Invalid=292, Unknown=0, NotChecked=0, Total=380 [2022-03-17 15:01:56,204 INFO L912 BasicCegarLoop]: 9 mSDtfsCounter, 10 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-17 15:01:56,204 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 31 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-17 15:01:56,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-03-17 15:01:56,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-03-17 15:01:56,204 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) [2022-03-17 15:01:56,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-03-17 15:01:56,205 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2022-03-17 15:01:56,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 15:01:56,205 INFO L478 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-03-17 15:01:56,205 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 12 states have internal predecessors, (19), 3 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 15:01:56,205 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-03-17 15:01:56,205 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-03-17 15:01:56,207 INFO L788 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-03-17 15:01:56,227 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-03-17 15:01:56,423 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 [2022-03-17 15:01:56,425 INFO L718 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-03-17 15:01:56,426 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-17 15:01:56,428 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.03 03:01:56 BasicIcfg [2022-03-17 15:01:56,428 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-17 15:01:56,429 INFO L158 Benchmark]: Toolchain (without parser) took 2077.43ms. Allocated memory was 187.7MB in the beginning and 229.6MB in the end (delta: 41.9MB). Free memory was 139.8MB in the beginning and 154.0MB in the end (delta: -14.2MB). Peak memory consumption was 28.3MB. Max. memory is 8.0GB. [2022-03-17 15:01:56,429 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 187.7MB. Free memory was 155.7MB in the beginning and 155.5MB in the end (delta: 146.8kB). There was no memory consumed. Max. memory is 8.0GB. [2022-03-17 15:01:56,429 INFO L158 Benchmark]: CACSL2BoogieTranslator took 159.14ms. Allocated memory is still 187.7MB. Free memory was 139.6MB in the beginning and 164.4MB in the end (delta: -24.8MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2022-03-17 15:01:56,429 INFO L158 Benchmark]: Boogie Preprocessor took 16.24ms. Allocated memory is still 187.7MB. Free memory was 164.4MB in the beginning and 163.0MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-17 15:01:56,429 INFO L158 Benchmark]: RCFGBuilder took 218.27ms. Allocated memory is still 187.7MB. Free memory was 163.0MB in the beginning and 153.0MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-03-17 15:01:56,430 INFO L158 Benchmark]: IcfgTransformer took 216.95ms. Allocated memory is still 187.7MB. Free memory was 153.0MB in the beginning and 145.6MB in the end (delta: 7.3MB). Peak memory consumption was 7.3MB. Max. memory is 8.0GB. [2022-03-17 15:01:56,430 INFO L158 Benchmark]: TraceAbstraction took 1462.42ms. Allocated memory was 187.7MB in the beginning and 229.6MB in the end (delta: 41.9MB). Free memory was 145.2MB in the beginning and 154.0MB in the end (delta: -8.8MB). Peak memory consumption was 34.0MB. Max. memory is 8.0GB. [2022-03-17 15:01:56,431 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from IcfgTransformer: - StatisticsResult: Jordan loop acceleration statistics 0 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1, 2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 187.7MB. Free memory was 155.7MB in the beginning and 155.5MB in the end (delta: 146.8kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 159.14ms. Allocated memory is still 187.7MB. Free memory was 139.6MB in the beginning and 164.4MB in the end (delta: -24.8MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * Boogie Preprocessor took 16.24ms. Allocated memory is still 187.7MB. Free memory was 164.4MB in the beginning and 163.0MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 218.27ms. Allocated memory is still 187.7MB. Free memory was 163.0MB in the beginning and 153.0MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * IcfgTransformer took 216.95ms. Allocated memory is still 187.7MB. Free memory was 153.0MB in the beginning and 145.6MB in the end (delta: 7.3MB). Peak memory consumption was 7.3MB. Max. memory is 8.0GB. * TraceAbstraction took 1462.42ms. Allocated memory was 187.7MB in the beginning and 229.6MB in the end (delta: 41.9MB). Free memory was 145.2MB in the beginning and 154.0MB in the end (delta: -8.8MB). Peak memory consumption was 34.0MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 21 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.4s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 37 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 36 mSDsluCounter, 84 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 42 mSDsCounter, 15 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 70 IncrementalHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 15 mSolverCounterUnsat, 42 mSDtfsCounter, 70 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 57 GetRequests, 27 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred in iteration=0, InterpolantAutomatonStates: 18, 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: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 54 NumberOfCodeBlocks, 54 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 63 ConstructedInterpolants, 0 QuantifiedInterpolants, 300 SizeOfPredicates, 2 NumberOfNonLiveVariables, 61 ConjunctsInSsa, 10 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 RESULT: Ultimate proved your program to be correct! [2022-03-17 15:01:56,459 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...