/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-zilu/benchmark37_conjunctive.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-34549b5 [2022-04-06 05:42:19,663 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-06 05:42:19,664 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-06 05:42:19,683 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-04-06 05:42:19,705 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-06 05:42:19,706 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-06 05:42:19,713 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-06 05:42:19,714 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2022-04-06 05:42:19,722 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-06 05:42:19,722 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-06 05:42:19,723 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-06 05:42:19,723 INFO L138 SettingsManager]: * sizeof long=4 [2022-04-06 05:42:19,723 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-06 05:42:19,723 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-04-06 05:42:19,723 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-06 05:42:19,723 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-06 05:42:19,723 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-06 05:42:19,724 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-06 05:42:19,724 INFO L138 SettingsManager]: * sizeof long double=12 [2022-04-06 05:42:19,724 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-06 05:42:19,724 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-06 05:42:19,724 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-06 05:42:19,724 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-06 05:42:19,724 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-06 05:42:19,724 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-04-06 05:42:19,724 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-06 05:42:19,725 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-06 05:42:19,725 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-06 05:42:19,725 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-04-06 05:42:19,725 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-04-06 05:42:19,725 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-04-06 05:42:19,918 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-06 05:42:19,940 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-06 05:42:19,942 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-06 05:42:19,943 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-06 05:42:19,943 INFO L275 PluginConnector]: CDTParser initialized [2022-04-06 05:42:19,944 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-zilu/benchmark37_conjunctive.i [2022-04-06 05:42:19,991 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/46cc75ffb/8fd86bd5a5b3439093eda29fe2e8ddb3/FLAGd51649a66 [2022-04-06 05:42:20,369 INFO L306 CDTParser]: Found 1 translation units. [2022-04-06 05:42:20,369 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-zilu/benchmark37_conjunctive.i [2022-04-06 05:42:20,374 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/46cc75ffb/8fd86bd5a5b3439093eda29fe2e8ddb3/FLAGd51649a66 [2022-04-06 05:42:20,387 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/46cc75ffb/8fd86bd5a5b3439093eda29fe2e8ddb3 [2022-04-06 05:42:20,390 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-06 05:42:20,390 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-04-06 05:42:20,392 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-06 05:42:20,392 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-06 05:42:20,395 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-06 05:42:20,395 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.04 05:42:20" (1/1) ... [2022-04-06 05:42:20,397 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@502bd3b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 05:42:20, skipping insertion in model container [2022-04-06 05:42:20,397 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.04 05:42:20" (1/1) ... [2022-04-06 05:42:20,402 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-06 05:42:20,414 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-06 05:42:20,556 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/benchmark37_conjunctive.i[873,886] [2022-04-06 05:42:20,565 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-06 05:42:20,571 INFO L203 MainTranslator]: Completed pre-run [2022-04-06 05:42:20,578 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/benchmark37_conjunctive.i[873,886] [2022-04-06 05:42:20,581 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-06 05:42:20,591 INFO L208 MainTranslator]: Completed translation [2022-04-06 05:42:20,592 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 05:42:20 WrapperNode [2022-04-06 05:42:20,592 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-06 05:42:20,592 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-06 05:42:20,592 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-06 05:42:20,593 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-06 05:42:20,601 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 05:42:20" (1/1) ... [2022-04-06 05:42:20,601 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 05:42:20" (1/1) ... [2022-04-06 05:42:20,606 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 05:42:20" (1/1) ... [2022-04-06 05:42:20,606 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 05:42:20" (1/1) ... [2022-04-06 05:42:20,609 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 05:42:20" (1/1) ... [2022-04-06 05:42:20,611 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 05:42:20" (1/1) ... [2022-04-06 05:42:20,616 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 05:42:20" (1/1) ... [2022-04-06 05:42:20,620 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-06 05:42:20,621 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-06 05:42:20,621 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-06 05:42:20,621 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-06 05:42:20,622 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 05:42:20" (1/1) ... [2022-04-06 05:42:20,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-06 05:42:20,635 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 05:42:20,644 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 05:42:20,664 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 05:42:20,673 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-04-06 05:42:20,673 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-06 05:42:20,673 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-04-06 05:42:20,673 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-04-06 05:42:20,673 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-04-06 05:42:20,673 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-04-06 05:42:20,673 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2022-04-06 05:42:20,674 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2022-04-06 05:42:20,674 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-04-06 05:42:20,674 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-06 05:42:20,674 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-04-06 05:42:20,674 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2022-04-06 05:42:20,674 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-04-06 05:42:20,674 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-04-06 05:42:20,675 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-04-06 05:42:20,675 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-06 05:42:20,675 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-06 05:42:20,676 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-06 05:42:20,676 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-06 05:42:20,676 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-06 05:42:20,717 INFO L234 CfgBuilder]: Building ICFG [2022-04-06 05:42:20,718 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-06 05:42:20,838 INFO L275 CfgBuilder]: Performing block encoding [2022-04-06 05:42:20,841 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-06 05:42:20,841 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-04-06 05:42:20,843 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.04 05:42:20 BoogieIcfgContainer [2022-04-06 05:42:20,843 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-06 05:42:20,844 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-04-06 05:42:20,844 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-04-06 05:42:20,860 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-04-06 05:42:20,862 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.04 05:42:20" (1/1) ... [2022-04-06 05:42:20,864 INFO L168 ansformationObserver]: Applying ICFG transformation LOOP_ACCELERATION_JORDAN [2022-04-06 05:42:21,061 INFO L89 elerationTransformer]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1, 2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 05:42:21,062 INFO L91 elerationTransformer]: Accelerated Formula: (and (= v_main_~x~0_3 (+ v_main_~x~0_2 1)) (< 0 v_main_~x~0_3) (= (+ v_main_~y~0_1 1) v_main_~y~0_2)) InVars {main_~x~0=v_main_~x~0_3, main_~y~0=v_main_~y~0_2} OutVars{main_~x~0=v_main_~x~0_2, main_#t~post4=|v_main_#t~post4_1|, main_~y~0=v_main_~y~0_1, main_#t~post3=|v_main_#t~post3_1|} AuxVars[] AssignedVars[main_~x~0, main_#t~post4, main_~y~0, main_#t~post3] to Formula: (or (and (= v_main_~y~0_2 v_main_~y~0_1) (= |v_main_#t~post3_3| |v_main_#t~post3_1|) (not (< 0 v_main_~x~0_3)) (= |v_main_#t~post4_3| |v_main_#t~post4_1|) (= v_main_~x~0_3 v_main_~x~0_2)) (and (< 0 (+ v_main_~x~0_2 1)) (= (+ v_main_~x~0_2 v_main_~y~0_2) (+ v_main_~x~0_3 v_main_~y~0_1)) (< v_main_~x~0_2 v_main_~x~0_3))) InVars {main_#t~post4=|v_main_#t~post4_3|, main_~y~0=v_main_~y~0_2, main_#t~post3=|v_main_#t~post3_3|, main_~x~0=v_main_~x~0_3} OutVars{main_#t~post4=|v_main_#t~post4_1|, main_~y~0=v_main_~y~0_1, main_#t~post3=|v_main_#t~post3_1|, main_~x~0=v_main_~x~0_2} AuxVars[] AssignedVars[main_~x~0, main_#t~post4, main_~y~0, main_#t~post3] [2022-04-06 05:42:21,065 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 06.04 05:42:21 BasicIcfg [2022-04-06 05:42:21,065 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-04-06 05:42:21,066 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-06 05:42:21,067 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-06 05:42:21,068 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-06 05:42:21,069 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.04 05:42:20" (1/4) ... [2022-04-06 05:42:21,069 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b2548a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.04 05:42:21, skipping insertion in model container [2022-04-06 05:42:21,069 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 05:42:20" (2/4) ... [2022-04-06 05:42:21,069 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b2548a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.04 05:42:21, skipping insertion in model container [2022-04-06 05:42:21,069 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.04 05:42:20" (3/4) ... [2022-04-06 05:42:21,070 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b2548a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.04 05:42:21, skipping insertion in model container [2022-04-06 05:42:21,070 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 06.04 05:42:21" (4/4) ... [2022-04-06 05:42:21,070 INFO L111 eAbstractionObserver]: Analyzing ICFG benchmark37_conjunctive.iJordan [2022-04-06 05:42:21,077 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2022-04-06 05:42:21,077 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-04-06 05:42:21,121 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-06 05:42:21,127 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 [2022-04-06 05:42:21,128 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-04-06 05:42:21,136 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 05:42:21,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-04-06 05:42:21,141 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 05:42:21,141 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 05:42:21,142 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 05:42:21,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 05:42:21,145 INFO L85 PathProgramCache]: Analyzing trace with hash 1809217115, now seen corresponding path program 1 times [2022-04-06 05:42:21,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 05:42:21,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386774499] [2022-04-06 05:42:21,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 05:42:21,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 05:42:21,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 05:42:21,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 05:42:21,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 05:42:21,256 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 05:42:21,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 05:42:21,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386774499] [2022-04-06 05:42:21,258 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386774499] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 05:42:21,258 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 05:42:21,258 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-06 05:42:21,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999081986] [2022-04-06 05:42:21,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 05:42:21,263 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-06 05:42:21,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 05:42:21,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-06 05:42:21,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-06 05:42:21,287 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 05:42:21,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 05:42:21,310 INFO L93 Difference]: Finished difference Result 20 states and 21 transitions. [2022-04-06 05:42:21,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-06 05:42:21,313 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 05:42:21,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 05:42:21,320 INFO L225 Difference]: With dead ends: 20 [2022-04-06 05:42:21,320 INFO L226 Difference]: Without dead ends: 13 [2022-04-06 05:42:21,321 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 05:42:21,325 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 05:42:21,326 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 05:42:21,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2022-04-06 05:42:21,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2022-04-06 05:42:21,345 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 05:42:21,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2022-04-06 05:42:21,346 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 12 [2022-04-06 05:42:21,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 05:42:21,347 INFO L478 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2022-04-06 05:42:21,347 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 05:42:21,347 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2022-04-06 05:42:21,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-04-06 05:42:21,348 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 05:42:21,348 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 05:42:21,348 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-06 05:42:21,349 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 05:42:21,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 05:42:21,351 INFO L85 PathProgramCache]: Analyzing trace with hash 1810140636, now seen corresponding path program 1 times [2022-04-06 05:42:21,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 05:42:21,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845740883] [2022-04-06 05:42:21,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 05:42:21,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 05:42:21,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 05:42:21,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 05:42:21,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 05:42:21,424 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 05:42:21,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 05:42:21,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845740883] [2022-04-06 05:42:21,424 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845740883] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 05:42:21,424 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 05:42:21,425 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-06 05:42:21,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027528574] [2022-04-06 05:42:21,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 05:42:21,426 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-06 05:42:21,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 05:42:21,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-06 05:42:21,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-04-06 05:42:21,427 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 4 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 05:42:21,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 05:42:21,476 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2022-04-06 05:42:21,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-06 05:42:21,478 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 4 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 05:42:21,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 05:42:21,478 INFO L225 Difference]: With dead ends: 17 [2022-04-06 05:42:21,479 INFO L226 Difference]: Without dead ends: 14 [2022-04-06 05:42:21,479 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-04-06 05:42:21,480 INFO L913 BasicCegarLoop]: 11 mSDtfsCounter, 10 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-06 05:42:21,480 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 28 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-06 05:42:21,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-04-06 05:42:21,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2022-04-06 05:42:21,482 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 05:42:21,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2022-04-06 05:42:21,483 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 12 [2022-04-06 05:42:21,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 05:42:21,483 INFO L478 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2022-04-06 05:42:21,483 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 4 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 05:42:21,483 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2022-04-06 05:42:21,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-04-06 05:42:21,484 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 05:42:21,484 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 05:42:21,484 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-04-06 05:42:21,484 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 05:42:21,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 05:42:21,485 INFO L85 PathProgramCache]: Analyzing trace with hash 306506437, now seen corresponding path program 1 times [2022-04-06 05:42:21,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 05:42:21,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293022526] [2022-04-06 05:42:21,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 05:42:21,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 05:42:21,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 05:42:21,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 05:42:21,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 05:42:21,606 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 05:42:21,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 05:42:21,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293022526] [2022-04-06 05:42:21,608 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [293022526] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 05:42:21,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1722498382] [2022-04-06 05:42:21,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 05:42:21,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 05:42:21,609 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 05:42:21,633 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 05:42:21,634 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 05:42:21,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 05:42:21,696 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 6 conjunts are in the unsatisfiable core [2022-04-06 05:42:21,699 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 05:42:21,838 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 05:42:21,838 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 05:42:21,967 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 05:42:21,967 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1722498382] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 05:42:21,968 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 05:42:21,968 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 10 [2022-04-06 05:42:21,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711248998] [2022-04-06 05:42:21,968 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-06 05:42:21,968 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-04-06 05:42:21,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 05:42:21,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-04-06 05:42:21,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-04-06 05:42:21,969 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand has 10 states, 10 states have (on average 1.4) internal successors, (14), 7 states have internal predecessors, (14), 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 05:42:22,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 05:42:22,007 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2022-04-06 05:42:22,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-06 05:42:22,007 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.4) internal successors, (14), 7 states have internal predecessors, (14), 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 05:42:22,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 05:42:22,008 INFO L225 Difference]: With dead ends: 12 [2022-04-06 05:42:22,008 INFO L226 Difference]: Without dead ends: 0 [2022-04-06 05:42:22,010 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2022-04-06 05:42:22,012 INFO L913 BasicCegarLoop]: 8 mSDtfsCounter, 8 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-06 05:42:22,015 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 30 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-06 05:42:22,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-04-06 05:42:22,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-04-06 05:42:22,016 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 05:42:22,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-04-06 05:42:22,017 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2022-04-06 05:42:22,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 05:42:22,017 INFO L478 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-04-06 05:42:22,017 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.4) internal successors, (14), 7 states have internal predecessors, (14), 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 05:42:22,018 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-04-06 05:42:22,018 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-06 05:42:22,020 INFO L788 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-04-06 05:42:22,061 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-04-06 05:42:22,239 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 05:42:22,241 INFO L719 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-04-06 05:42:22,242 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-04-06 05:42:22,244 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.04 05:42:22 BasicIcfg [2022-04-06 05:42:22,244 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-04-06 05:42:22,245 INFO L158 Benchmark]: Toolchain (without parser) took 1854.34ms. Allocated memory was 190.8MB in the beginning and 265.3MB in the end (delta: 74.4MB). Free memory was 142.7MB in the beginning and 231.0MB in the end (delta: -88.3MB). There was no memory consumed. Max. memory is 8.0GB. [2022-04-06 05:42:22,245 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 190.8MB. Free memory was 158.9MB in the beginning and 158.8MB in the end (delta: 151.8kB). There was no memory consumed. Max. memory is 8.0GB. [2022-04-06 05:42:22,245 INFO L158 Benchmark]: CACSL2BoogieTranslator took 199.71ms. Allocated memory is still 190.8MB. Free memory was 142.5MB in the beginning and 167.8MB in the end (delta: -25.4MB). Peak memory consumption was 12.0MB. Max. memory is 8.0GB. [2022-04-06 05:42:22,246 INFO L158 Benchmark]: Boogie Preprocessor took 28.16ms. Allocated memory is still 190.8MB. Free memory was 167.8MB in the beginning and 166.2MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-04-06 05:42:22,246 INFO L158 Benchmark]: RCFGBuilder took 221.86ms. Allocated memory is still 190.8MB. Free memory was 166.2MB in the beginning and 156.3MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-04-06 05:42:22,246 INFO L158 Benchmark]: IcfgTransformer took 221.67ms. Allocated memory is still 190.8MB. Free memory was 156.3MB in the beginning and 148.4MB in the end (delta: 7.9MB). Peak memory consumption was 7.3MB. Max. memory is 8.0GB. [2022-04-06 05:42:22,247 INFO L158 Benchmark]: TraceAbstraction took 1177.94ms. Allocated memory was 190.8MB in the beginning and 265.3MB in the end (delta: 74.4MB). Free memory was 147.9MB in the beginning and 231.0MB in the end (delta: -83.1MB). There was no memory consumed. Max. memory is 8.0GB. [2022-04-06 05:42:22,248 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from IcfgTransformer: - StatisticsResult: Jordan loop acceleration statistics 2 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 190.8MB. Free memory was 158.9MB in the beginning and 158.8MB in the end (delta: 151.8kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 199.71ms. Allocated memory is still 190.8MB. Free memory was 142.5MB in the beginning and 167.8MB in the end (delta: -25.4MB). Peak memory consumption was 12.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 28.16ms. Allocated memory is still 190.8MB. Free memory was 167.8MB in the beginning and 166.2MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 221.86ms. Allocated memory is still 190.8MB. Free memory was 166.2MB in the beginning and 156.3MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * IcfgTransformer took 221.67ms. Allocated memory is still 190.8MB. Free memory was 156.3MB in the beginning and 148.4MB in the end (delta: 7.9MB). Peak memory consumption was 7.3MB. Max. memory is 8.0GB. * TraceAbstraction took 1177.94ms. Allocated memory was 190.8MB in the beginning and 265.3MB in the end (delta: 74.4MB). Free memory was 147.9MB in the beginning and 231.0MB in the end (delta: -83.1MB). There was no memory consumed. 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, 31 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 30 mSDsluCounter, 81 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 42 mSDsCounter, 12 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 48 IncrementalHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 12 mSolverCounterUnsat, 39 mSDtfsCounter, 48 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 51 GetRequests, 30 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 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: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 50 NumberOfCodeBlocks, 50 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 58 ConstructedInterpolants, 0 QuantifiedInterpolants, 130 SizeOfPredicates, 8 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 RESULT: Ultimate proved your program to be correct! [2022-04-06 05:42:22,281 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...