/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/cggmp2005.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-34549b5 [2022-04-06 04:50:28,387 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-06 04:50:28,388 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-06 04:50:28,414 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-04-06 04:50:28,456 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-06 04:50:28,456 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-06 04:50:28,458 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-06 04:50:28,458 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2022-04-06 04:50:28,468 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-06 04:50:28,469 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-06 04:50:28,470 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-06 04:50:28,470 INFO L138 SettingsManager]: * sizeof long=4 [2022-04-06 04:50:28,470 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-06 04:50:28,470 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-04-06 04:50:28,470 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-06 04:50:28,470 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-06 04:50:28,470 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-06 04:50:28,471 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-06 04:50:28,471 INFO L138 SettingsManager]: * sizeof long double=12 [2022-04-06 04:50:28,471 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-06 04:50:28,471 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-06 04:50:28,471 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-06 04:50:28,471 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-06 04:50:28,472 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-06 04:50:28,472 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-04-06 04:50:28,472 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-06 04:50:28,472 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-06 04:50:28,472 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-06 04:50:28,472 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-04-06 04:50:28,473 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-04-06 04:50:28,473 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-04-06 04:50:28,673 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-06 04:50:28,695 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-06 04:50:28,696 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-06 04:50:28,697 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-06 04:50:28,698 INFO L275 PluginConnector]: CDTParser initialized [2022-04-06 04:50:28,699 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/cggmp2005.i [2022-04-06 04:50:28,760 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fa96a38f4/53f1ff05ded54809ad84e596539a53fb/FLAGefa17b918 [2022-04-06 04:50:29,188 INFO L306 CDTParser]: Found 1 translation units. [2022-04-06 04:50:29,188 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/cggmp2005.i [2022-04-06 04:50:29,193 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fa96a38f4/53f1ff05ded54809ad84e596539a53fb/FLAGefa17b918 [2022-04-06 04:50:29,613 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fa96a38f4/53f1ff05ded54809ad84e596539a53fb [2022-04-06 04:50:29,617 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-06 04:50:29,618 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-04-06 04:50:29,619 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-06 04:50:29,619 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-06 04:50:29,622 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-06 04:50:29,623 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.04 04:50:29" (1/1) ... [2022-04-06 04:50:29,623 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4646a87f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 04:50:29, skipping insertion in model container [2022-04-06 04:50:29,624 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.04 04:50:29" (1/1) ... [2022-04-06 04:50:29,628 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-06 04:50:29,639 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-06 04:50:29,792 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/cggmp2005.i[895,908] [2022-04-06 04:50:29,801 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-06 04:50:29,809 INFO L203 MainTranslator]: Completed pre-run [2022-04-06 04:50:29,818 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/cggmp2005.i[895,908] [2022-04-06 04:50:29,819 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-06 04:50:29,840 INFO L208 MainTranslator]: Completed translation [2022-04-06 04:50:29,840 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 04:50:29 WrapperNode [2022-04-06 04:50:29,840 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-06 04:50:29,841 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-06 04:50:29,841 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-06 04:50:29,841 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-06 04:50:29,862 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 04:50:29" (1/1) ... [2022-04-06 04:50:29,862 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 04:50:29" (1/1) ... [2022-04-06 04:50:29,866 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 04:50:29" (1/1) ... [2022-04-06 04:50:29,867 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 04:50:29" (1/1) ... [2022-04-06 04:50:29,869 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 04:50:29" (1/1) ... [2022-04-06 04:50:29,872 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 04:50:29" (1/1) ... [2022-04-06 04:50:29,873 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 04:50:29" (1/1) ... [2022-04-06 04:50:29,874 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-06 04:50:29,874 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-06 04:50:29,874 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-06 04:50:29,874 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-06 04:50:29,876 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 04:50:29" (1/1) ... [2022-04-06 04:50:29,881 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-06 04:50:29,887 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 04:50:29,897 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 04:50:29,900 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 04:50:29,930 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-04-06 04:50:29,931 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-06 04:50:29,931 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-04-06 04:50:29,931 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-04-06 04:50:29,932 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-04-06 04:50:29,932 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-04-06 04:50:29,932 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-04-06 04:50:29,932 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-04-06 04:50:29,932 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2022-04-06 04:50:29,933 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2022-04-06 04:50:29,933 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-04-06 04:50:29,933 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-06 04:50:29,933 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-04-06 04:50:29,933 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-04-06 04:50:29,934 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-04-06 04:50:29,939 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-04-06 04:50:29,939 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-04-06 04:50:29,939 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-06 04:50:29,940 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-06 04:50:29,940 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-06 04:50:29,940 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-06 04:50:29,940 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-06 04:50:29,983 INFO L234 CfgBuilder]: Building ICFG [2022-04-06 04:50:29,985 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-06 04:50:30,060 INFO L275 CfgBuilder]: Performing block encoding [2022-04-06 04:50:30,064 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-06 04:50:30,064 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-04-06 04:50:30,066 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.04 04:50:30 BoogieIcfgContainer [2022-04-06 04:50:30,066 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-06 04:50:30,066 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-04-06 04:50:30,066 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-04-06 04:50:30,067 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-04-06 04:50:30,069 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.04 04:50:30" (1/1) ... [2022-04-06 04:50:30,071 INFO L168 ansformationObserver]: Applying ICFG transformation LOOP_ACCELERATION_JORDAN [2022-04-06 04:50:30,193 INFO L89 elerationTransformer]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1, 2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-06 04:50:30,194 INFO L91 elerationTransformer]: Accelerated Formula: (and (<= v_main_~i~0_3 v_main_~j~0_3) (= v_main_~j~0_2 (+ (- 1) v_main_~j~0_3)) (= (+ v_main_~i~0_3 2) v_main_~i~0_2)) InVars {main_~j~0=v_main_~j~0_3, main_~i~0=v_main_~i~0_3} OutVars{main_~j~0=v_main_~j~0_2, main_~i~0=v_main_~i~0_2} AuxVars[] AssignedVars[main_~j~0, main_~i~0] to Formula: (or (and (= v_main_~j~0_3 v_main_~j~0_2) (not (<= v_main_~i~0_3 v_main_~j~0_3)) (= v_main_~i~0_3 v_main_~i~0_2)) (and (< v_main_~j~0_2 v_main_~j~0_3) (<= v_main_~j~0_3 (+ v_main_~j~0_2 (div (+ v_main_~j~0_3 (* (- 1) v_main_~i~0_3)) 3) 1)) (= (+ v_main_~i~0_2 (* v_main_~j~0_2 2)) (+ v_main_~i~0_3 (* v_main_~j~0_3 2))))) InVars {main_~i~0=v_main_~i~0_3, main_~j~0=v_main_~j~0_3} OutVars{main_~i~0=v_main_~i~0_2, main_~j~0=v_main_~j~0_2} AuxVars[] AssignedVars[main_~j~0, main_~i~0] [2022-04-06 04:50:30,198 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 06.04 04:50:30 BasicIcfg [2022-04-06 04:50:30,198 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-04-06 04:50:30,200 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-06 04:50:30,200 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-06 04:50:30,202 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-06 04:50:30,202 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.04 04:50:29" (1/4) ... [2022-04-06 04:50:30,202 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fb11494 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.04 04:50:30, skipping insertion in model container [2022-04-06 04:50:30,203 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 04:50:29" (2/4) ... [2022-04-06 04:50:30,223 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fb11494 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.04 04:50:30, skipping insertion in model container [2022-04-06 04:50:30,223 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.04 04:50:30" (3/4) ... [2022-04-06 04:50:30,224 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fb11494 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.04 04:50:30, skipping insertion in model container [2022-04-06 04:50:30,224 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 06.04 04:50:30" (4/4) ... [2022-04-06 04:50:30,225 INFO L111 eAbstractionObserver]: Analyzing ICFG cggmp2005.iJordan [2022-04-06 04:50:30,228 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2022-04-06 04:50:30,229 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-04-06 04:50:30,268 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-06 04:50:30,274 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 04:50:30,274 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-04-06 04:50:30,283 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 12 states have internal predecessors, (15), 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 04:50:30,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-04-06 04:50:30,289 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 04:50:30,289 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 04:50:30,290 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 04:50:30,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 04:50:30,297 INFO L85 PathProgramCache]: Analyzing trace with hash 1257757292, now seen corresponding path program 1 times [2022-04-06 04:50:30,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 04:50:30,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571529217] [2022-04-06 04:50:30,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 04:50:30,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 04:50:30,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:30,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 04:50:30,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:30,437 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 04:50:30,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 04:50:30,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571529217] [2022-04-06 04:50:30,438 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571529217] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 04:50:30,438 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 04:50:30,439 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-06 04:50:30,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478270241] [2022-04-06 04:50:30,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 04:50:30,443 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-06 04:50:30,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 04:50:30,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-06 04:50:30,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-06 04:50:30,462 INFO L87 Difference]: Start difference. First operand has 19 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 12 states have internal predecessors, (15), 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 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 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 04:50:30,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 04:50:30,501 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2022-04-06 04:50:30,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-06 04:50:30,504 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 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 11 [2022-04-06 04:50:30,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 04:50:30,513 INFO L225 Difference]: With dead ends: 19 [2022-04-06 04:50:30,513 INFO L226 Difference]: Without dead ends: 12 [2022-04-06 04:50:30,515 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 04:50:30,518 INFO L913 BasicCegarLoop]: 18 mSDtfsCounter, 10 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 21 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 04:50:30,519 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 21 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-06 04:50:30,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2022-04-06 04:50:30,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2022-04-06 04:50:30,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 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 04:50:30,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2022-04-06 04:50:30,541 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 11 [2022-04-06 04:50:30,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 04:50:30,542 INFO L478 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2022-04-06 04:50:30,542 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 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 04:50:30,542 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2022-04-06 04:50:30,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-04-06 04:50:30,542 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 04:50:30,543 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 04:50:30,543 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-06 04:50:30,543 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 04:50:30,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 04:50:30,546 INFO L85 PathProgramCache]: Analyzing trace with hash 1258680813, now seen corresponding path program 1 times [2022-04-06 04:50:30,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 04:50:30,547 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340501532] [2022-04-06 04:50:30,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 04:50:30,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 04:50:30,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:30,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 04:50:30,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:30,616 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 04:50:30,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 04:50:30,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340501532] [2022-04-06 04:50:30,616 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340501532] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 04:50:30,616 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 04:50:30,617 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-06 04:50:30,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638300038] [2022-04-06 04:50:30,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 04:50:30,618 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-04-06 04:50:30,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 04:50:30,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-04-06 04:50:30,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-06 04:50:30,620 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 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 04:50:30,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 04:50:30,648 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2022-04-06 04:50:30,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-06 04:50:30,649 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 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 11 [2022-04-06 04:50:30,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 04:50:30,650 INFO L225 Difference]: With dead ends: 13 [2022-04-06 04:50:30,650 INFO L226 Difference]: Without dead ends: 13 [2022-04-06 04:50:30,650 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-04-06 04:50:30,651 INFO L913 BasicCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-06 04:50:30,651 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 18 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-06 04:50:30,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2022-04-06 04:50:30,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2022-04-06 04:50:30,653 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 04:50:30,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2022-04-06 04:50:30,654 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 11 [2022-04-06 04:50:30,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 04:50:30,654 INFO L478 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2022-04-06 04:50:30,654 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 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 04:50:30,654 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2022-04-06 04:50:30,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-04-06 04:50:30,654 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 04:50:30,654 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 04:50:30,655 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-04-06 04:50:30,655 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 04:50:30,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 04:50:30,655 INFO L85 PathProgramCache]: Analyzing trace with hash 391120150, now seen corresponding path program 1 times [2022-04-06 04:50:30,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 04:50:30,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111384089] [2022-04-06 04:50:30,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 04:50:30,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 04:50:30,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:30,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 04:50:30,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:30,793 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 04:50:30,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 04:50:30,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111384089] [2022-04-06 04:50:30,793 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111384089] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 04:50:30,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1372580723] [2022-04-06 04:50:30,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 04:50:30,794 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 04:50:30,794 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 04:50:30,804 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 04:50:30,836 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 04:50:30,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:30,843 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 9 conjunts are in the unsatisfiable core [2022-04-06 04:50:30,846 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 04:50:43,595 WARN L232 SmtUtils]: Spent 12.22s on a formula simplification. DAG size of input: 6031 DAG size of output: 2208 (called from [L1067] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-04-06 04:51:50,704 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 04:51:50,705 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 04:51:50,938 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 04:51:50,942 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1372580723] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 04:51:50,942 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 04:51:50,942 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 13 [2022-04-06 04:51:50,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247480341] [2022-04-06 04:51:50,943 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-06 04:51:50,944 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-04-06 04:51:50,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 04:51:50,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-04-06 04:51:50,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2022-04-06 04:51:50,946 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand has 13 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 10 states have internal predecessors, (16), 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 04:51:51,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 04:51:51,044 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2022-04-06 04:51:51,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-04-06 04:51:51,045 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 10 states have internal predecessors, (16), 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 12 [2022-04-06 04:51:51,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 04:51:51,045 INFO L225 Difference]: With dead ends: 11 [2022-04-06 04:51:51,045 INFO L226 Difference]: Without dead ends: 0 [2022-04-06 04:51:51,046 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 17 SyntacticMatches, 4 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2022-04-06 04:51:51,048 INFO L913 BasicCegarLoop]: 7 mSDtfsCounter, 8 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-06 04:51:51,050 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 39 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-06 04:51:51,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-04-06 04:51:51,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-04-06 04:51:51,052 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 04:51:51,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-04-06 04:51:51,052 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2022-04-06 04:51:51,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 04:51:51,052 INFO L478 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-04-06 04:51:51,053 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 10 states have internal predecessors, (16), 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 04:51:51,053 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-04-06 04:51:51,053 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-06 04:51:51,055 INFO L788 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-04-06 04:51:51,073 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-04-06 04:51:51,271 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 04:51:51,274 INFO L719 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-04-06 04:51:51,276 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-04-06 04:51:51,283 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.04 04:51:51 BasicIcfg [2022-04-06 04:51:51,283 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-04-06 04:51:51,284 INFO L158 Benchmark]: Toolchain (without parser) took 81665.69ms. Allocated memory was 178.3MB in the beginning and 568.3MB in the end (delta: 390.1MB). Free memory was 120.0MB in the beginning and 508.6MB in the end (delta: -388.6MB). Peak memory consumption was 2.0MB. Max. memory is 8.0GB. [2022-04-06 04:51:51,287 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 178.3MB. Free memory is still 136.2MB. There was no memory consumed. Max. memory is 8.0GB. [2022-04-06 04:51:51,287 INFO L158 Benchmark]: CACSL2BoogieTranslator took 221.32ms. Allocated memory was 178.3MB in the beginning and 271.6MB in the end (delta: 93.3MB). Free memory was 119.9MB in the beginning and 243.4MB in the end (delta: -123.5MB). Peak memory consumption was 15.2MB. Max. memory is 8.0GB. [2022-04-06 04:51:51,288 INFO L158 Benchmark]: Boogie Preprocessor took 32.60ms. Allocated memory is still 271.6MB. Free memory was 243.4MB in the beginning and 242.3MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-04-06 04:51:51,288 INFO L158 Benchmark]: RCFGBuilder took 191.57ms. Allocated memory is still 271.6MB. Free memory was 242.3MB in the beginning and 231.9MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-04-06 04:51:51,288 INFO L158 Benchmark]: IcfgTransformer took 132.17ms. Allocated memory is still 271.6MB. Free memory was 231.9MB in the beginning and 224.5MB in the end (delta: 7.3MB). Peak memory consumption was 7.3MB. Max. memory is 8.0GB. [2022-04-06 04:51:51,289 INFO L158 Benchmark]: TraceAbstraction took 81083.51ms. Allocated memory was 271.6MB in the beginning and 568.3MB in the end (delta: 296.7MB). Free memory was 224.0MB in the beginning and 508.6MB in the end (delta: -284.6MB). Peak memory consumption was 13.7MB. Max. memory is 8.0GB. [2022-04-06 04:51:51,290 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from IcfgTransformer: - StatisticsResult: Jordan loop acceleration statistics 0 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1, 2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 178.3MB. Free memory is still 136.2MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 221.32ms. Allocated memory was 178.3MB in the beginning and 271.6MB in the end (delta: 93.3MB). Free memory was 119.9MB in the beginning and 243.4MB in the end (delta: -123.5MB). Peak memory consumption was 15.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 32.60ms. Allocated memory is still 271.6MB. Free memory was 243.4MB in the beginning and 242.3MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 191.57ms. Allocated memory is still 271.6MB. Free memory was 242.3MB in the beginning and 231.9MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * IcfgTransformer took 132.17ms. Allocated memory is still 271.6MB. Free memory was 231.9MB in the beginning and 224.5MB in the end (delta: 7.3MB). Peak memory consumption was 7.3MB. Max. memory is 8.0GB. * TraceAbstraction took 81083.51ms. Allocated memory was 271.6MB in the beginning and 568.3MB in the end (delta: 296.7MB). Free memory was 224.0MB in the beginning and 508.6MB in the end (delta: -284.6MB). Peak memory consumption was 13.7MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 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, 19 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 81.0s, 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, 25 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 24 mSDsluCounter, 78 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 42 mSDsCounter, 14 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 43 IncrementalHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 14 mSolverCounterUnsat, 36 mSDtfsCounter, 43 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 47 GetRequests, 23 SyntacticMatches, 4 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred 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, 80.3s InterpolantComputationTime, 46 NumberOfCodeBlocks, 46 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 53 ConstructedInterpolants, 0 QuantifiedInterpolants, 251 SizeOfPredicates, 2 NumberOfNonLiveVariables, 50 ConjunctsInSsa, 9 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 04:51:51,322 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...