/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/jm2006_variant.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-7390193 [2022-04-05 00:31:53,856 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-05 00:31:53,857 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-05 00:31:53,891 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-04-05 00:31:53,925 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-05 00:31:53,925 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-05 00:31:53,926 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-05 00:31:53,927 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2022-04-05 00:31:53,934 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-05 00:31:53,934 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-05 00:31:53,935 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-05 00:31:53,935 INFO L138 SettingsManager]: * sizeof long=4 [2022-04-05 00:31:53,935 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-05 00:31:53,935 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-04-05 00:31:53,935 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-05 00:31:53,936 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-05 00:31:53,936 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-05 00:31:53,936 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-05 00:31:53,936 INFO L138 SettingsManager]: * sizeof long double=12 [2022-04-05 00:31:53,936 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-05 00:31:53,936 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-05 00:31:53,936 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-05 00:31:53,937 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-05 00:31:53,937 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-05 00:31:53,937 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-04-05 00:31:53,937 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-05 00:31:53,937 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-05 00:31:53,937 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-05 00:31:53,937 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-04-05 00:31:53,937 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-04-05 00:31:53,938 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-04-05 00:31:54,106 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-05 00:31:54,123 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-05 00:31:54,124 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-05 00:31:54,125 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-05 00:31:54,125 INFO L275 PluginConnector]: CDTParser initialized [2022-04-05 00:31:54,126 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/jm2006_variant.i [2022-04-05 00:31:54,164 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/13200486a/2adc2c1b1e2f492980f2580f1aa35822/FLAGbb66ad51a [2022-04-05 00:31:54,498 INFO L306 CDTParser]: Found 1 translation units. [2022-04-05 00:31:54,499 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/jm2006_variant.i [2022-04-05 00:31:54,505 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/13200486a/2adc2c1b1e2f492980f2580f1aa35822/FLAGbb66ad51a [2022-04-05 00:31:54,515 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/13200486a/2adc2c1b1e2f492980f2580f1aa35822 [2022-04-05 00:31:54,519 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-05 00:31:54,520 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-04-05 00:31:54,521 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-05 00:31:54,521 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-05 00:31:54,523 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-05 00:31:54,524 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.04 12:31:54" (1/1) ... [2022-04-05 00:31:54,524 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a49e328 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 12:31:54, skipping insertion in model container [2022-04-05 00:31:54,525 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.04 12:31:54" (1/1) ... [2022-04-05 00:31:54,530 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-05 00:31:54,539 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-05 00:31:54,686 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/jm2006_variant.i[895,908] [2022-04-05 00:31:54,700 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-05 00:31:54,705 INFO L203 MainTranslator]: Completed pre-run [2022-04-05 00:31:54,713 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/jm2006_variant.i[895,908] [2022-04-05 00:31:54,717 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-05 00:31:54,727 INFO L208 MainTranslator]: Completed translation [2022-04-05 00:31:54,727 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 12:31:54 WrapperNode [2022-04-05 00:31:54,728 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-05 00:31:54,728 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-05 00:31:54,728 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-05 00:31:54,729 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-05 00:31:54,735 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 12:31:54" (1/1) ... [2022-04-05 00:31:54,736 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 12:31:54" (1/1) ... [2022-04-05 00:31:54,740 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 12:31:54" (1/1) ... [2022-04-05 00:31:54,740 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 12:31:54" (1/1) ... [2022-04-05 00:31:54,750 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 12:31:54" (1/1) ... [2022-04-05 00:31:54,753 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 12:31:54" (1/1) ... [2022-04-05 00:31:54,757 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 12:31:54" (1/1) ... [2022-04-05 00:31:54,759 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-05 00:31:54,760 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-05 00:31:54,760 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-05 00:31:54,760 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-05 00:31:54,761 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 12:31:54" (1/1) ... [2022-04-05 00:31:54,765 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-05 00:31:54,771 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 00:31:54,788 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) [2022-04-05 00:31:54,804 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 [2022-04-05 00:31:54,818 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-04-05 00:31:54,818 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-05 00:31:54,819 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-04-05 00:31:54,819 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-04-05 00:31:54,819 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-04-05 00:31:54,819 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-04-05 00:31:54,819 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-04-05 00:31:54,819 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-04-05 00:31:54,819 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2022-04-05 00:31:54,819 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2022-04-05 00:31:54,819 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-04-05 00:31:54,820 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-05 00:31:54,820 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-04-05 00:31:54,820 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-04-05 00:31:54,820 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-04-05 00:31:54,821 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-04-05 00:31:54,821 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-04-05 00:31:54,821 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-05 00:31:54,821 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-05 00:31:54,821 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-05 00:31:54,821 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-05 00:31:54,821 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-05 00:31:54,872 INFO L234 CfgBuilder]: Building ICFG [2022-04-05 00:31:54,873 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-05 00:31:54,934 INFO L275 CfgBuilder]: Performing block encoding [2022-04-05 00:31:54,937 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-05 00:31:54,937 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-04-05 00:31:54,938 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.04 12:31:54 BoogieIcfgContainer [2022-04-05 00:31:54,939 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-05 00:31:54,939 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-04-05 00:31:54,939 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-04-05 00:31:54,940 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-04-05 00:31:54,942 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.04 12:31:54" (1/1) ... [2022-04-05 00:31:54,943 INFO L168 ansformationObserver]: Applying ICFG transformation LOOP_ACCELERATION_JORDAN [2022-04-05 00:31:55,091 INFO L89 elerationTransformer]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=2, 2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-05 00:31:55,091 INFO L91 elerationTransformer]: Accelerated Formula: (and (= v_main_~z~0_1 (+ v_main_~z~0_2 1)) (= (+ v_main_~x~0_1 1) v_main_~x~0_2) (not (= v_main_~x~0_2 0)) (= (+ (- 2) v_main_~y~0_2) v_main_~y~0_1)) InVars {main_~x~0=v_main_~x~0_2, main_~z~0=v_main_~z~0_2, main_~y~0=v_main_~y~0_2} OutVars{main_~x~0=v_main_~x~0_1, main_~z~0=v_main_~z~0_1, 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_~z~0, main_#t~post4, main_~y~0, main_#t~post3] to Formula: (let ((.cse0 (= v_main_~x~0_2 0))) (or (and (< v_main_~z~0_2 v_main_~z~0_1) (or (not (<= 1 v_main_~x~0_2)) (not (<= (+ v_main_~x~0_2 v_main_~z~0_2 1) v_main_~z~0_1))) (= v_main_~y~0_1 (+ v_main_~y~0_2 (* v_main_~z~0_2 2) (* (- 2) v_main_~z~0_1))) (= v_main_~x~0_1 (+ v_main_~x~0_2 v_main_~z~0_2 (* (- 1) v_main_~z~0_1))) (not .cse0)) (and (= v_main_~z~0_2 v_main_~z~0_1) (= v_main_~y~0_2 v_main_~y~0_1) (= |v_main_#t~post3_3| |v_main_#t~post3_1|) (= v_main_~x~0_2 v_main_~x~0_1) (= |v_main_#t~post4_3| |v_main_#t~post4_1|) .cse0))) 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_2, main_~z~0=v_main_~z~0_2} 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_1, main_~z~0=v_main_~z~0_1} AuxVars[] AssignedVars[main_~x~0, main_~z~0, main_#t~post4, main_~y~0, main_#t~post3] [2022-04-05 00:31:55,095 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 05.04 12:31:55 BasicIcfg [2022-04-05 00:31:55,095 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-04-05 00:31:55,096 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-05 00:31:55,096 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-05 00:31:55,098 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-05 00:31:55,098 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.04 12:31:54" (1/4) ... [2022-04-05 00:31:55,098 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cba356a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.04 12:31:55, skipping insertion in model container [2022-04-05 00:31:55,098 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 12:31:54" (2/4) ... [2022-04-05 00:31:55,098 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cba356a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.04 12:31:55, skipping insertion in model container [2022-04-05 00:31:55,099 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.04 12:31:54" (3/4) ... [2022-04-05 00:31:55,099 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cba356a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.04 12:31:55, skipping insertion in model container [2022-04-05 00:31:55,099 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 05.04 12:31:55" (4/4) ... [2022-04-05 00:31:55,099 INFO L111 eAbstractionObserver]: Analyzing ICFG jm2006_variant.iJordan [2022-04-05 00:31:55,102 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2022-04-05 00:31:55,103 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-04-05 00:31:55,126 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-05 00:31:55,130 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 [2022-04-05 00:31:55,131 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-04-05 00:31:55,138 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 14 states have (on average 1.5) internal successors, (21), 16 states have internal predecessors, (21), 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) [2022-04-05 00:31:55,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-04-05 00:31:55,142 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 00:31:55,143 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 00:31:55,143 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 00:31:55,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 00:31:55,151 INFO L85 PathProgramCache]: Analyzing trace with hash 1409552995, now seen corresponding path program 1 times [2022-04-05 00:31:55,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 00:31:55,159 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209726771] [2022-04-05 00:31:55,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 00:31:55,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 00:31:55,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 00:31:55,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 00:31:55,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 00:31:55,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 00:31:55,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 00:31:55,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209726771] [2022-04-05 00:31:55,298 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209726771] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 00:31:55,298 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 00:31:55,298 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-05 00:31:55,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395573610] [2022-04-05 00:31:55,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 00:31:55,302 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-05 00:31:55,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 00:31:55,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-05 00:31:55,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-05 00:31:55,325 INFO L87 Difference]: Start difference. First operand has 22 states, 14 states have (on average 1.5) internal successors, (21), 16 states have internal predecessors, (21), 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 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 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) [2022-04-05 00:31:55,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 00:31:55,350 INFO L93 Difference]: Finished difference Result 22 states and 25 transitions. [2022-04-05 00:31:55,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-05 00:31:55,352 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 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 14 [2022-04-05 00:31:55,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 00:31:55,359 INFO L225 Difference]: With dead ends: 22 [2022-04-05 00:31:55,359 INFO L226 Difference]: Without dead ends: 15 [2022-04-05 00:31:55,363 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 [2022-04-05 00:31:55,366 INFO L913 BasicCegarLoop]: 24 mSDtfsCounter, 16 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 27 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 [2022-04-05 00:31:55,367 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 27 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-05 00:31:55,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2022-04-05 00:31:55,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2022-04-05 00:31:55,387 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) [2022-04-05 00:31:55,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2022-04-05 00:31:55,388 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 14 [2022-04-05 00:31:55,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 00:31:55,389 INFO L478 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2022-04-05 00:31:55,389 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 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) [2022-04-05 00:31:55,389 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2022-04-05 00:31:55,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-04-05 00:31:55,389 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 00:31:55,390 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 00:31:55,390 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-05 00:31:55,390 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 00:31:55,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 00:31:55,392 INFO L85 PathProgramCache]: Analyzing trace with hash 1438182146, now seen corresponding path program 1 times [2022-04-05 00:31:55,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 00:31:55,393 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245166939] [2022-04-05 00:31:55,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 00:31:55,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 00:31:55,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 00:31:55,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 00:31:55,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 00:31:55,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 00:31:55,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 00:31:55,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245166939] [2022-04-05 00:31:55,604 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245166939] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 00:31:55,604 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 00:31:55,604 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-04-05 00:31:55,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646570780] [2022-04-05 00:31:55,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 00:31:55,605 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-04-05 00:31:55,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 00:31:55,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-04-05 00:31:55,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-04-05 00:31:55,606 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 states have internal predecessors, (10), 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) [2022-04-05 00:31:55,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 00:31:55,715 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2022-04-05 00:31:55,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-04-05 00:31:55,715 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 states have internal predecessors, (10), 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 14 [2022-04-05 00:31:55,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 00:31:55,717 INFO L225 Difference]: With dead ends: 20 [2022-04-05 00:31:55,717 INFO L226 Difference]: Without dead ends: 16 [2022-04-05 00:31:55,720 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2022-04-05 00:31:55,722 INFO L913 BasicCegarLoop]: 11 mSDtfsCounter, 15 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-05 00:31:55,723 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 38 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-05 00:31:55,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2022-04-05 00:31:55,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2022-04-05 00:31:55,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 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) [2022-04-05 00:31:55,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2022-04-05 00:31:55,725 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 14 [2022-04-05 00:31:55,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 00:31:55,726 INFO L478 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2022-04-05 00:31:55,726 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 states have internal predecessors, (10), 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) [2022-04-05 00:31:55,726 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2022-04-05 00:31:55,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-04-05 00:31:55,726 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 00:31:55,726 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 00:31:55,726 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-04-05 00:31:55,727 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 00:31:55,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 00:31:55,727 INFO L85 PathProgramCache]: Analyzing trace with hash -1832655910, now seen corresponding path program 1 times [2022-04-05 00:31:55,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 00:31:55,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30545812] [2022-04-05 00:31:55,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 00:31:55,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 00:31:55,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 00:31:55,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 00:31:55,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 00:31:55,932 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 00:31:55,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 00:31:55,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30545812] [2022-04-05 00:31:55,932 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30545812] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 00:31:55,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1571007817] [2022-04-05 00:31:55,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 00:31:55,933 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 00:31:55,933 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 00:31:55,934 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) [2022-04-05 00:31:55,935 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-04-05 00:31:55,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 00:31:55,967 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 14 conjunts are in the unsatisfiable core [2022-04-05 00:31:55,970 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 00:31:56,253 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 00:31:56,254 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 00:31:56,543 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 00:31:56,544 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1571007817] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 00:31:56,544 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 00:31:56,544 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-04-05 00:31:56,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336200968] [2022-04-05 00:31:56,544 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 00:31:56,545 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-04-05 00:31:56,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 00:31:56,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-04-05 00:31:56,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2022-04-05 00:31:56,546 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand has 19 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 16 states have internal predecessors, (23), 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) [2022-04-05 00:31:56,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 00:31:56,783 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2022-04-05 00:31:56,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-04-05 00:31:56,783 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 16 states have internal predecessors, (23), 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 15 [2022-04-05 00:31:56,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 00:31:56,783 INFO L225 Difference]: With dead ends: 14 [2022-04-05 00:31:56,783 INFO L226 Difference]: Without dead ends: 0 [2022-04-05 00:31:56,784 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 21 SyntacticMatches, 3 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=129, Invalid=521, Unknown=0, NotChecked=0, Total=650 [2022-04-05 00:31:56,785 INFO L913 BasicCegarLoop]: 8 mSDtfsCounter, 17 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-05 00:31:56,785 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 50 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-05 00:31:56,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-04-05 00:31:56,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-04-05 00:31:56,786 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) [2022-04-05 00:31:56,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-04-05 00:31:56,786 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2022-04-05 00:31:56,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 00:31:56,786 INFO L478 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-04-05 00:31:56,786 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 16 states have internal predecessors, (23), 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) [2022-04-05 00:31:56,786 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-04-05 00:31:56,786 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-05 00:31:56,788 INFO L788 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-04-05 00:31:56,807 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-04-05 00:31:56,995 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 [2022-04-05 00:31:56,997 INFO L719 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-04-05 00:31:56,998 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-04-05 00:31:57,000 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.04 12:31:56 BasicIcfg [2022-04-05 00:31:57,000 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-04-05 00:31:57,000 INFO L158 Benchmark]: Toolchain (without parser) took 2480.48ms. Allocated memory was 204.5MB in the beginning and 281.0MB in the end (delta: 76.5MB). Free memory was 149.6MB in the beginning and 204.8MB in the end (delta: -55.1MB). Peak memory consumption was 22.6MB. Max. memory is 8.0GB. [2022-04-05 00:31:57,000 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 204.5MB. Free memory is still 166.3MB. There was no memory consumed. Max. memory is 8.0GB. [2022-04-05 00:31:57,001 INFO L158 Benchmark]: CACSL2BoogieTranslator took 207.16ms. Allocated memory is still 204.5MB. Free memory was 149.4MB in the beginning and 175.7MB in the end (delta: -26.3MB). Peak memory consumption was 9.5MB. Max. memory is 8.0GB. [2022-04-05 00:31:57,001 INFO L158 Benchmark]: Boogie Preprocessor took 31.16ms. Allocated memory is still 204.5MB. Free memory was 175.7MB in the beginning and 174.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-04-05 00:31:57,001 INFO L158 Benchmark]: RCFGBuilder took 178.74ms. Allocated memory is still 204.5MB. Free memory was 174.1MB in the beginning and 163.6MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-04-05 00:31:57,001 INFO L158 Benchmark]: IcfgTransformer took 156.00ms. Allocated memory is still 204.5MB. Free memory was 163.6MB in the beginning and 155.2MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. [2022-04-05 00:31:57,002 INFO L158 Benchmark]: TraceAbstraction took 1903.84ms. Allocated memory was 204.5MB in the beginning and 281.0MB in the end (delta: 76.5MB). Free memory was 154.7MB in the beginning and 204.8MB in the end (delta: -50.1MB). Peak memory consumption was 26.8MB. Max. memory is 8.0GB. [2022-04-05 00:31:57,003 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from IcfgTransformer: - StatisticsResult: Jordan loop acceleration statistics 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=2, 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 204.5MB. Free memory is still 166.3MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 207.16ms. Allocated memory is still 204.5MB. Free memory was 149.4MB in the beginning and 175.7MB in the end (delta: -26.3MB). Peak memory consumption was 9.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 31.16ms. Allocated memory is still 204.5MB. Free memory was 175.7MB in the beginning and 174.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 178.74ms. Allocated memory is still 204.5MB. Free memory was 174.1MB in the beginning and 163.6MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * IcfgTransformer took 156.00ms. Allocated memory is still 204.5MB. Free memory was 163.6MB in the beginning and 155.2MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. * TraceAbstraction took 1903.84ms. Allocated memory was 204.5MB in the beginning and 281.0MB in the end (delta: 76.5MB). Free memory was 154.7MB in the beginning and 204.8MB in the end (delta: -50.1MB). Peak memory consumption was 26.8MB. 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, 22 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.9s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 49 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 48 mSDsluCounter, 115 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 72 mSDsCounter, 16 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 115 IncrementalHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 16 mSolverCounterUnsat, 43 mSDtfsCounter, 115 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 67 GetRequests, 28 SyntacticMatches, 3 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred in iteration=0, InterpolantAutomatonStates: 21, 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, 1.0s InterpolantComputationTime, 58 NumberOfCodeBlocks, 58 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 68 ConstructedInterpolants, 0 QuantifiedInterpolants, 470 SizeOfPredicates, 7 NumberOfNonLiveVariables, 66 ConjunctsInSsa, 14 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! [2022-04-05 00:31:57,036 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...