/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-invgen/apache-get-tag.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-7968f31 [2022-03-17 14:58:49,068 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-17 14:58:49,069 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-17 14:58:49,092 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-03-17 14:58:49,092 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-03-17 14:58:49,092 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-03-17 14:58:49,093 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-03-17 14:58:49,094 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-03-17 14:58:49,095 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-03-17 14:58:49,096 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-03-17 14:58:49,096 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-03-17 14:58:49,097 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-03-17 14:58:49,097 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-17 14:58:49,098 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-17 14:58:49,098 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-17 14:58:49,100 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-17 14:58:49,101 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-17 14:58:49,105 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-17 14:58:49,107 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-17 14:58:49,108 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-17 14:58:49,109 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-03-17 14:58:49,111 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-17 14:58:49,111 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-17 14:58:49,112 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-17 14:58:49,112 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-17 14:58:49,114 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-03-17 14:58:49,118 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-17 14:58:49,119 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-17 14:58:49,125 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-17 14:58:49,125 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2022-03-17 14:58:49,132 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-17 14:58:49,132 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-17 14:58:49,133 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-17 14:58:49,133 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-17 14:58:49,133 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-17 14:58:49,133 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-17 14:58:49,133 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-17 14:58:49,133 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-17 14:58:49,134 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-17 14:58:49,134 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-17 14:58:49,134 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-17 14:58:49,134 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-17 14:58:49,134 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-17 14:58:49,134 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-17 14:58:49,134 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-17 14:58:49,134 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-17 14:58:49,134 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-17 14:58:49,134 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-17 14:58:49,134 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-17 14:58:49,135 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-17 14:58:49,135 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-17 14:58:49,141 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-03-17 14:58:49,141 INFO L138 SettingsManager]: * TransformationType=LOOP_ACCELERATION_JORDAN WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-03-17 14:58:49,315 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-17 14:58:49,334 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-17 14:58:49,336 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-17 14:58:49,336 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-17 14:58:49,337 INFO L275 PluginConnector]: CDTParser initialized [2022-03-17 14:58:49,338 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/apache-get-tag.i [2022-03-17 14:58:49,387 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fa4172e7d/4c44fd89bd9a4befa3e132f33bb6ad2f/FLAG0d21b6dc8 [2022-03-17 14:58:49,721 INFO L306 CDTParser]: Found 1 translation units. [2022-03-17 14:58:49,721 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/apache-get-tag.i [2022-03-17 14:58:49,728 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fa4172e7d/4c44fd89bd9a4befa3e132f33bb6ad2f/FLAG0d21b6dc8 [2022-03-17 14:58:49,736 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fa4172e7d/4c44fd89bd9a4befa3e132f33bb6ad2f [2022-03-17 14:58:49,738 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-17 14:58:49,739 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-03-17 14:58:49,740 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-17 14:58:49,740 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-17 14:58:49,749 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-17 14:58:49,749 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 02:58:49" (1/1) ... [2022-03-17 14:58:49,750 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f2a5054 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:58:49, skipping insertion in model container [2022-03-17 14:58:49,750 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 02:58:49" (1/1) ... [2022-03-17 14:58:49,755 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-17 14:58:49,765 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-17 14:58:49,875 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-invgen/apache-get-tag.i[893,906] [2022-03-17 14:58:49,903 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-17 14:58:49,912 INFO L203 MainTranslator]: Completed pre-run [2022-03-17 14:58:49,923 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-invgen/apache-get-tag.i[893,906] [2022-03-17 14:58:49,937 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-17 14:58:49,948 INFO L208 MainTranslator]: Completed translation [2022-03-17 14:58:49,949 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:58:49 WrapperNode [2022-03-17 14:58:49,949 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-17 14:58:49,950 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-17 14:58:49,950 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-17 14:58:49,950 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-17 14:58:49,957 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:58:49" (1/1) ... [2022-03-17 14:58:49,958 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:58:49" (1/1) ... [2022-03-17 14:58:49,964 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:58:49" (1/1) ... [2022-03-17 14:58:49,964 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:58:49" (1/1) ... [2022-03-17 14:58:49,975 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:58:49" (1/1) ... [2022-03-17 14:58:49,979 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:58:49" (1/1) ... [2022-03-17 14:58:49,983 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:58:49" (1/1) ... [2022-03-17 14:58:49,986 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-17 14:58:49,987 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-17 14:58:49,987 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-17 14:58:49,987 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-17 14:58:49,988 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:58:49" (1/1) ... [2022-03-17 14:58:49,998 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-17 14:58:50,005 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-17 14:58:50,015 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-03-17 14:58:50,023 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-03-17 14:58:50,043 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-03-17 14:58:50,043 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-17 14:58:50,043 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-03-17 14:58:50,043 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-03-17 14:58:50,044 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-03-17 14:58:50,044 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-03-17 14:58:50,044 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-03-17 14:58:50,044 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-03-17 14:58:50,044 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2022-03-17 14:58:50,044 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2022-03-17 14:58:50,044 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-03-17 14:58:50,044 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-17 14:58:50,044 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-03-17 14:58:50,045 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-03-17 14:58:50,045 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-03-17 14:58:50,046 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-03-17 14:58:50,046 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-03-17 14:58:50,046 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-17 14:58:50,046 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-17 14:58:50,046 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-17 14:58:50,046 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-17 14:58:50,046 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-17 14:58:50,096 INFO L234 CfgBuilder]: Building ICFG [2022-03-17 14:58:50,097 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-17 14:58:50,198 INFO L275 CfgBuilder]: Performing block encoding [2022-03-17 14:58:50,202 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-17 14:58:50,202 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-03-17 14:58:50,204 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.03 02:58:50 BoogieIcfgContainer [2022-03-17 14:58:50,204 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-17 14:58:50,204 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-03-17 14:58:50,204 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-03-17 14:58:50,205 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-03-17 14:58:50,207 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.03 02:58:50" (1/1) ... [2022-03-17 14:58:50,221 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 17.03 02:58:50 BasicIcfg [2022-03-17 14:58:50,221 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-03-17 14:58:50,222 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-17 14:58:50,222 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-17 14:58:50,232 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-17 14:58:50,233 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.03 02:58:49" (1/4) ... [2022-03-17 14:58:50,233 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b9dfacb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 02:58:50, skipping insertion in model container [2022-03-17 14:58:50,233 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:58:49" (2/4) ... [2022-03-17 14:58:50,233 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b9dfacb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 02:58:50, skipping insertion in model container [2022-03-17 14:58:50,233 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.03 02:58:50" (3/4) ... [2022-03-17 14:58:50,234 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b9dfacb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.03 02:58:50, skipping insertion in model container [2022-03-17 14:58:50,234 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 17.03 02:58:50" (4/4) ... [2022-03-17 14:58:50,234 INFO L111 eAbstractionObserver]: Analyzing ICFG apache-get-tag.iJordan [2022-03-17 14:58:50,237 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2022-03-17 14:58:50,237 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-17 14:58:50,285 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-17 14:58:50,292 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=ForwardPredicates, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP [2022-03-17 14:58:50,292 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-03-17 14:58:50,304 INFO L276 IsEmpty]: Start isEmpty. Operand has 48 states, 25 states have (on average 1.56) internal successors, (39), 30 states have internal predecessors, (39), 18 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (18), 15 states have call predecessors, (18), 18 states have call successors, (18) [2022-03-17 14:58:50,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-03-17 14:58:50,320 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 14:58:50,321 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 14:58:50,321 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 14:58:50,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 14:58:50,325 INFO L85 PathProgramCache]: Analyzing trace with hash 1788024088, now seen corresponding path program 1 times [2022-03-17 14:58:50,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 14:58:50,333 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732521891] [2022-03-17 14:58:50,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 14:58:50,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 14:58:50,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 14:58:50,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 14:58:50,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 14:58:50,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 14:58:50,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 14:58:50,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732521891] [2022-03-17 14:58:50,496 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732521891] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 14:58:50,497 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 14:58:50,497 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-17 14:58:50,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781466290] [2022-03-17 14:58:50,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 14:58:50,501 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-17 14:58:50,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 14:58:50,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-17 14:58:50,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-17 14:58:50,526 INFO L87 Difference]: Start difference. First operand has 48 states, 25 states have (on average 1.56) internal successors, (39), 30 states have internal predecessors, (39), 18 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (18), 15 states have call predecessors, (18), 18 states have call successors, (18) Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 14:58:50,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 14:58:50,622 INFO L93 Difference]: Finished difference Result 48 states and 70 transitions. [2022-03-17 14:58:50,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-17 14:58:50,624 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2022-03-17 14:58:50,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 14:58:50,631 INFO L225 Difference]: With dead ends: 48 [2022-03-17 14:58:50,631 INFO L226 Difference]: Without dead ends: 43 [2022-03-17 14:58:50,632 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-17 14:58:50,637 INFO L912 BasicCegarLoop]: 54 mSDtfsCounter, 31 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-17 14:58:50,639 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 57 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-17 14:58:50,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-03-17 14:58:50,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2022-03-17 14:58:50,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 22 states have (on average 1.3636363636363635) internal successors, (30), 26 states have internal predecessors, (30), 18 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-03-17 14:58:50,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 61 transitions. [2022-03-17 14:58:50,673 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 61 transitions. Word has length 13 [2022-03-17 14:58:50,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 14:58:50,674 INFO L478 AbstractCegarLoop]: Abstraction has 43 states and 61 transitions. [2022-03-17 14:58:50,674 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 14:58:50,674 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 61 transitions. [2022-03-17 14:58:50,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-03-17 14:58:50,675 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 14:58:50,675 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 14:58:50,676 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-17 14:58:50,676 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 14:58:50,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 14:58:50,678 INFO L85 PathProgramCache]: Analyzing trace with hash -347621339, now seen corresponding path program 1 times [2022-03-17 14:58:50,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 14:58:50,679 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571351465] [2022-03-17 14:58:50,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 14:58:50,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 14:58:50,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 14:58:50,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 14:58:50,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 14:58:50,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 14:58:50,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 14:58:50,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571351465] [2022-03-17 14:58:50,786 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571351465] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 14:58:50,786 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 14:58:50,786 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-17 14:58:50,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981782480] [2022-03-17 14:58:50,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 14:58:50,787 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-17 14:58:50,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 14:58:50,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-17 14:58:50,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-03-17 14:58:50,788 INFO L87 Difference]: Start difference. First operand 43 states and 61 transitions. Second operand has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 4 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) [2022-03-17 14:58:50,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 14:58:50,952 INFO L93 Difference]: Finished difference Result 47 states and 64 transitions. [2022-03-17 14:58:50,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-17 14:58:50,953 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 4 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 [2022-03-17 14:58:50,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 14:58:50,953 INFO L225 Difference]: With dead ends: 47 [2022-03-17 14:58:50,953 INFO L226 Difference]: Without dead ends: 47 [2022-03-17 14:58:50,954 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-03-17 14:58:50,955 INFO L912 BasicCegarLoop]: 37 mSDtfsCounter, 47 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-17 14:58:50,955 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 54 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-17 14:58:50,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2022-03-17 14:58:50,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2022-03-17 14:58:50,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 25 states have (on average 1.32) internal successors, (33), 29 states have internal predecessors, (33), 18 states have call successors, (18), 4 states have call predecessors, (18), 3 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-03-17 14:58:50,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 64 transitions. [2022-03-17 14:58:50,961 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 64 transitions. Word has length 14 [2022-03-17 14:58:50,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 14:58:50,961 INFO L478 AbstractCegarLoop]: Abstraction has 47 states and 64 transitions. [2022-03-17 14:58:50,961 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 4 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) [2022-03-17 14:58:50,961 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 64 transitions. [2022-03-17 14:58:50,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-17 14:58:50,962 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 14:58:50,962 INFO L500 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 14:58:50,962 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-17 14:58:50,962 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 14:58:50,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 14:58:50,963 INFO L85 PathProgramCache]: Analyzing trace with hash -2003510572, now seen corresponding path program 1 times [2022-03-17 14:58:50,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 14:58:50,963 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305832219] [2022-03-17 14:58:50,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 14:58:50,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 14:58:50,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 14:58:51,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 14:58:51,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 14:58:51,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-17 14:58:51,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 14:58:51,060 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 14:58:51,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 14:58:51,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305832219] [2022-03-17 14:58:51,061 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305832219] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 14:58:51,061 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 14:58:51,061 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-17 14:58:51,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711230861] [2022-03-17 14:58:51,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 14:58:51,061 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-17 14:58:51,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 14:58:51,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-17 14:58:51,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-03-17 14:58:51,062 INFO L87 Difference]: Start difference. First operand 47 states and 64 transitions. Second operand has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-03-17 14:58:51,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 14:58:51,255 INFO L93 Difference]: Finished difference Result 60 states and 82 transitions. [2022-03-17 14:58:51,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-17 14:58:51,256 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 19 [2022-03-17 14:58:51,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 14:58:51,259 INFO L225 Difference]: With dead ends: 60 [2022-03-17 14:58:51,259 INFO L226 Difference]: Without dead ends: 50 [2022-03-17 14:58:51,260 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2022-03-17 14:58:51,265 INFO L912 BasicCegarLoop]: 46 mSDtfsCounter, 41 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-17 14:58:51,266 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [50 Valid, 68 Invalid, 290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-17 14:58:51,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2022-03-17 14:58:51,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 41. [2022-03-17 14:58:51,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 25 states have (on average 1.2) internal successors, (30), 26 states have internal predecessors, (30), 12 states have call successors, (12), 4 states have call predecessors, (12), 3 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-03-17 14:58:51,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 52 transitions. [2022-03-17 14:58:51,277 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 52 transitions. Word has length 19 [2022-03-17 14:58:51,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 14:58:51,278 INFO L478 AbstractCegarLoop]: Abstraction has 41 states and 52 transitions. [2022-03-17 14:58:51,278 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-03-17 14:58:51,278 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 52 transitions. [2022-03-17 14:58:51,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-17 14:58:51,278 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 14:58:51,278 INFO L500 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 14:58:51,279 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-03-17 14:58:51,279 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 14:58:51,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 14:58:51,279 INFO L85 PathProgramCache]: Analyzing trace with hash 2142117223, now seen corresponding path program 1 times [2022-03-17 14:58:51,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 14:58:51,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624870535] [2022-03-17 14:58:51,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 14:58:51,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 14:58:51,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 14:58:51,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 14:58:51,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 14:58:51,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-03-17 14:58:51,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 14:58:51,352 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 14:58:51,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 14:58:51,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624870535] [2022-03-17 14:58:51,353 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624870535] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 14:58:51,353 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 14:58:51,353 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-17 14:58:51,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968415120] [2022-03-17 14:58:51,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 14:58:51,354 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-17 14:58:51,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 14:58:51,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-17 14:58:51,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-03-17 14:58:51,354 INFO L87 Difference]: Start difference. First operand 41 states and 52 transitions. Second operand has 7 states, 7 states have (on average 2.0) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-03-17 14:58:51,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 14:58:51,525 INFO L93 Difference]: Finished difference Result 58 states and 72 transitions. [2022-03-17 14:58:51,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-17 14:58:51,526 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 20 [2022-03-17 14:58:51,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 14:58:51,528 INFO L225 Difference]: With dead ends: 58 [2022-03-17 14:58:51,528 INFO L226 Difference]: Without dead ends: 58 [2022-03-17 14:58:51,528 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2022-03-17 14:58:51,537 INFO L912 BasicCegarLoop]: 33 mSDtfsCounter, 57 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-17 14:58:51,538 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [57 Valid, 55 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-17 14:58:51,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2022-03-17 14:58:51,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 56. [2022-03-17 14:58:51,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 34 states have (on average 1.1764705882352942) internal successors, (40), 37 states have internal predecessors, (40), 16 states have call successors, (16), 6 states have call predecessors, (16), 5 states have return successors, (14), 12 states have call predecessors, (14), 14 states have call successors, (14) [2022-03-17 14:58:51,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 70 transitions. [2022-03-17 14:58:51,549 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 70 transitions. Word has length 20 [2022-03-17 14:58:51,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 14:58:51,549 INFO L478 AbstractCegarLoop]: Abstraction has 56 states and 70 transitions. [2022-03-17 14:58:51,549 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-03-17 14:58:51,549 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 70 transitions. [2022-03-17 14:58:51,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-03-17 14:58:51,550 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 14:58:51,550 INFO L500 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 14:58:51,550 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-03-17 14:58:51,551 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 14:58:51,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 14:58:51,551 INFO L85 PathProgramCache]: Analyzing trace with hash -1358705581, now seen corresponding path program 1 times [2022-03-17 14:58:51,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 14:58:51,551 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16483367] [2022-03-17 14:58:51,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 14:58:51,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 14:58:51,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 14:58:51,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 14:58:51,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 14:58:51,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-03-17 14:58:51,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 14:58:51,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-17 14:58:51,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 14:58:51,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-03-17 14:58:51,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 14:58:51,670 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-03-17 14:58:51,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 14:58:51,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16483367] [2022-03-17 14:58:51,671 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16483367] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-17 14:58:51,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [948819165] [2022-03-17 14:58:51,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 14:58:51,671 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-17 14:58:51,671 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-17 14:58:51,675 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-17 14:58:51,677 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-03-17 14:58:51,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 14:58:51,711 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-17 14:58:51,715 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-17 14:58:51,915 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-03-17 14:58:51,915 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-17 14:58:52,009 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-03-17 14:58:52,009 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [948819165] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-17 14:58:52,009 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-17 14:58:52,010 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 7] total 16 [2022-03-17 14:58:52,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718549367] [2022-03-17 14:58:52,010 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-17 14:58:52,010 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-03-17 14:58:52,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 14:58:52,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-03-17 14:58:52,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2022-03-17 14:58:52,011 INFO L87 Difference]: Start difference. First operand 56 states and 70 transitions. Second operand has 16 states, 16 states have (on average 2.25) internal successors, (36), 13 states have internal predecessors, (36), 7 states have call successors, (15), 4 states have call predecessors, (15), 1 states have return successors, (10), 7 states have call predecessors, (10), 7 states have call successors, (10) [2022-03-17 14:58:52,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 14:58:52,348 INFO L93 Difference]: Finished difference Result 78 states and 105 transitions. [2022-03-17 14:58:52,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-17 14:58:52,349 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.25) internal successors, (36), 13 states have internal predecessors, (36), 7 states have call successors, (15), 4 states have call predecessors, (15), 1 states have return successors, (10), 7 states have call predecessors, (10), 7 states have call successors, (10) Word has length 34 [2022-03-17 14:58:52,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 14:58:52,349 INFO L225 Difference]: With dead ends: 78 [2022-03-17 14:58:52,349 INFO L226 Difference]: Without dead ends: 0 [2022-03-17 14:58:52,350 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 68 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=135, Invalid=515, Unknown=0, NotChecked=0, Total=650 [2022-03-17 14:58:52,350 INFO L912 BasicCegarLoop]: 29 mSDtfsCounter, 121 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 353 mSolverCounterSat, 170 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 523 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 170 IncrementalHoareTripleChecker+Valid, 353 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-17 14:58:52,350 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [121 Valid, 66 Invalid, 523 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [170 Valid, 353 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-17 14:58:52,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-03-17 14:58:52,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-03-17 14:58:52,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-17 14:58:52,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-03-17 14:58:52,351 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 34 [2022-03-17 14:58:52,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 14:58:52,351 INFO L478 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-03-17 14:58:52,351 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.25) internal successors, (36), 13 states have internal predecessors, (36), 7 states have call successors, (15), 4 states have call predecessors, (15), 1 states have return successors, (10), 7 states have call predecessors, (10), 7 states have call successors, (10) [2022-03-17 14:58:52,351 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-03-17 14:58:52,351 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-03-17 14:58:52,353 INFO L788 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-03-17 14:58:52,375 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-03-17 14:58:52,569 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-17 14:58:52,573 INFO L718 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-03-17 14:58:52,573 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-17 14:58:52,575 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.03 02:58:52 BasicIcfg [2022-03-17 14:58:52,575 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-17 14:58:52,576 INFO L158 Benchmark]: Toolchain (without parser) took 2837.09ms. Allocated memory was 199.2MB in the beginning and 250.6MB in the end (delta: 51.4MB). Free memory was 145.3MB in the beginning and 116.3MB in the end (delta: 29.1MB). Peak memory consumption was 81.1MB. Max. memory is 8.0GB. [2022-03-17 14:58:52,576 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 199.2MB. Free memory was 161.7MB in the beginning and 161.5MB in the end (delta: 136.4kB). There was no memory consumed. Max. memory is 8.0GB. [2022-03-17 14:58:52,576 INFO L158 Benchmark]: CACSL2BoogieTranslator took 209.33ms. Allocated memory is still 199.2MB. Free memory was 145.2MB in the beginning and 170.8MB in the end (delta: -25.6MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-03-17 14:58:52,576 INFO L158 Benchmark]: Boogie Preprocessor took 36.59ms. Allocated memory is still 199.2MB. Free memory was 170.8MB in the beginning and 169.4MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-17 14:58:52,577 INFO L158 Benchmark]: RCFGBuilder took 216.95ms. Allocated memory is still 199.2MB. Free memory was 169.4MB in the beginning and 157.3MB in the end (delta: 12.2MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2022-03-17 14:58:52,577 INFO L158 Benchmark]: IcfgTransformer took 16.90ms. Allocated memory is still 199.2MB. Free memory was 157.3MB in the beginning and 155.8MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-17 14:58:52,577 INFO L158 Benchmark]: TraceAbstraction took 2353.30ms. Allocated memory was 199.2MB in the beginning and 250.6MB in the end (delta: 51.4MB). Free memory was 155.6MB in the beginning and 116.3MB in the end (delta: 39.3MB). Peak memory consumption was 91.9MB. Max. memory is 8.0GB. [2022-03-17 14:58:52,579 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 199.2MB. Free memory was 161.7MB in the beginning and 161.5MB in the end (delta: 136.4kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 209.33ms. Allocated memory is still 199.2MB. Free memory was 145.2MB in the beginning and 170.8MB in the end (delta: -25.6MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 36.59ms. Allocated memory is still 199.2MB. Free memory was 170.8MB in the beginning and 169.4MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 216.95ms. Allocated memory is still 199.2MB. Free memory was 169.4MB in the beginning and 157.3MB in the end (delta: 12.2MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * IcfgTransformer took 16.90ms. Allocated memory is still 199.2MB. Free memory was 157.3MB in the beginning and 155.8MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * TraceAbstraction took 2353.30ms. Allocated memory was 199.2MB in the beginning and 250.6MB in the end (delta: 51.4MB). Free memory was 155.6MB in the beginning and 116.3MB in the end (delta: 39.3MB). Peak memory consumption was 91.9MB. 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, 48 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.3s, OverallIterations: 5, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 322 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 297 mSDsluCounter, 300 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 101 mSDsCounter, 341 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 950 IncrementalHoareTripleChecker+Invalid, 1291 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 341 mSolverCounterUnsat, 199 mSDtfsCounter, 950 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 141 GetRequests, 85 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=56occurred in iteration=4, InterpolantAutomatonStates: 40, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 11 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 134 NumberOfCodeBlocks, 134 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 161 ConstructedInterpolants, 0 QuantifiedInterpolants, 544 SizeOfPredicates, 1 NumberOfNonLiveVariables, 93 ConjunctsInSsa, 8 ConjunctsInUnsatCore, 7 InterpolantComputations, 4 PerfectInterpolantSequences, 60/67 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-03-17 14:58:52,611 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...