/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/loops/heavy-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-d966a43 [2022-01-31 12:05:17,800 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-31 12:05:17,802 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-31 12:05:17,867 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-31 12:05:17,867 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-31 12:05:17,870 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-31 12:05:17,875 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-31 12:05:17,877 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-31 12:05:17,880 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-31 12:05:17,885 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-31 12:05:17,885 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-31 12:05:17,887 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-31 12:05:17,887 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-31 12:05:17,889 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-31 12:05:17,890 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-31 12:05:17,893 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-31 12:05:17,894 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-31 12:05:17,894 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-31 12:05:17,897 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-31 12:05:17,901 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-31 12:05:17,902 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-31 12:05:17,903 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-31 12:05:17,904 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-31 12:05:17,905 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-31 12:05:17,908 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-31 12:05:17,920 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-31 12:05:17,920 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-31 12:05:17,921 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-31 12:05:17,922 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2022-01-31 12:05:17,933 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-31 12:05:17,933 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-31 12:05:17,934 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-31 12:05:17,935 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-31 12:05:17,935 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-31 12:05:17,935 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-31 12:05:17,935 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-31 12:05:17,935 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-31 12:05:17,935 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-31 12:05:17,935 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-31 12:05:17,936 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-31 12:05:17,936 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-31 12:05:17,936 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-31 12:05:17,936 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-31 12:05:17,937 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-31 12:05:17,937 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-31 12:05:17,937 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-31 12:05:17,937 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-31 12:05:17,937 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 12:05:17,937 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-31 12:05:17,937 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-31 12:05:17,938 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-31 12:05:17,938 INFO L138 SettingsManager]: * TransformationType=LOOP_ACCELERATION_JORDAN WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-31 12:05:18,157 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-31 12:05:18,175 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-31 12:05:18,177 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-31 12:05:18,178 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-31 12:05:18,179 INFO L275 PluginConnector]: CDTParser initialized [2022-01-31 12:05:18,180 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/heavy-2.c [2022-01-31 12:05:18,230 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4352a8acb/d956636b6554454a99f985571ebb47be/FLAG51fe5112f [2022-01-31 12:05:18,592 INFO L306 CDTParser]: Found 1 translation units. [2022-01-31 12:05:18,592 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/heavy-2.c [2022-01-31 12:05:18,597 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4352a8acb/d956636b6554454a99f985571ebb47be/FLAG51fe5112f [2022-01-31 12:05:18,607 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4352a8acb/d956636b6554454a99f985571ebb47be [2022-01-31 12:05:18,609 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-31 12:05:18,610 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-31 12:05:18,611 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-31 12:05:18,611 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-31 12:05:18,617 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-31 12:05:18,618 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 12:05:18" (1/1) ... [2022-01-31 12:05:18,618 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6825cdbe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 12:05:18, skipping insertion in model container [2022-01-31 12:05:18,619 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 12:05:18" (1/1) ... [2022-01-31 12:05:18,624 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-31 12:05:18,633 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-31 12:05:18,764 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/heavy-2.c[600,613] [2022-01-31 12:05:18,767 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 12:05:18,805 INFO L203 MainTranslator]: Completed pre-run [2022-01-31 12:05:18,818 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/heavy-2.c[600,613] [2022-01-31 12:05:18,819 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 12:05:18,855 INFO L208 MainTranslator]: Completed translation [2022-01-31 12:05:18,855 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 12:05:18 WrapperNode [2022-01-31 12:05:18,856 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-31 12:05:18,856 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-31 12:05:18,857 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-31 12:05:18,857 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-31 12:05:18,867 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 12:05:18" (1/1) ... [2022-01-31 12:05:18,867 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 12:05:18" (1/1) ... [2022-01-31 12:05:18,876 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 12:05:18" (1/1) ... [2022-01-31 12:05:18,876 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 12:05:18" (1/1) ... [2022-01-31 12:05:18,880 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 12:05:18" (1/1) ... [2022-01-31 12:05:18,884 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 12:05:18" (1/1) ... [2022-01-31 12:05:18,889 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 12:05:18" (1/1) ... [2022-01-31 12:05:18,890 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-31 12:05:18,891 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-31 12:05:18,891 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-31 12:05:18,891 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-31 12:05:18,893 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 12:05:18" (1/1) ... [2022-01-31 12:05:18,903 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 12:05:18,913 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 12:05:18,922 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) [2022-01-31 12:05:18,925 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 [2022-01-31 12:05:18,957 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-01-31 12:05:18,957 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-31 12:05:18,957 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-01-31 12:05:18,957 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-01-31 12:05:18,958 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-01-31 12:05:18,958 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-01-31 12:05:18,958 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-01-31 12:05:18,958 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-31 12:05:18,958 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-01-31 12:05:18,958 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-31 12:05:18,959 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-31 12:05:18,959 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-01-31 12:05:18,959 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-31 12:05:18,959 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-01-31 12:05:18,959 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-31 12:05:18,959 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-31 12:05:19,030 INFO L234 CfgBuilder]: Building ICFG [2022-01-31 12:05:19,032 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-31 12:05:19,144 INFO L275 CfgBuilder]: Performing block encoding [2022-01-31 12:05:19,149 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-31 12:05:19,150 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-01-31 12:05:19,151 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 12:05:19 BoogieIcfgContainer [2022-01-31 12:05:19,151 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-31 12:05:19,152 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-31 12:05:19,152 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-31 12:05:19,152 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-31 12:05:19,155 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 12:05:19" (1/1) ... [2022-01-31 12:05:19,170 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 31.01 12:05:19 BasicIcfg [2022-01-31 12:05:19,170 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-31 12:05:19,188 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-31 12:05:19,188 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-31 12:05:19,192 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-31 12:05:19,192 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 12:05:18" (1/4) ... [2022-01-31 12:05:19,193 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73e1b17c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 12:05:19, skipping insertion in model container [2022-01-31 12:05:19,193 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 12:05:18" (2/4) ... [2022-01-31 12:05:19,194 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73e1b17c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 12:05:19, skipping insertion in model container [2022-01-31 12:05:19,194 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 12:05:19" (3/4) ... [2022-01-31 12:05:19,194 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73e1b17c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.01 12:05:19, skipping insertion in model container [2022-01-31 12:05:19,194 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 31.01 12:05:19" (4/4) ... [2022-01-31 12:05:19,195 INFO L111 eAbstractionObserver]: Analyzing ICFG heavy-2.cJordan [2022-01-31 12:05:19,199 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2022-01-31 12:05:19,199 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-31 12:05:19,262 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-31 12:05:19,267 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2022-01-31 12:05:19,267 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-31 12:05:19,288 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 14 states have internal predecessors, (21), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-31 12:05:19,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-01-31 12:05:19,296 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 12:05:19,296 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 12:05:19,297 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 12:05:19,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 12:05:19,300 INFO L85 PathProgramCache]: Analyzing trace with hash 1140822413, now seen corresponding path program 1 times [2022-01-31 12:05:19,306 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 12:05:19,306 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339566878] [2022-01-31 12:05:19,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 12:05:19,307 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 12:05:19,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 12:05:19,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 12:05:19,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 12:05:19,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 12:05:19,560 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 12:05:19,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339566878] [2022-01-31 12:05:19,560 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339566878] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 12:05:19,561 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 12:05:19,561 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-31 12:05:19,562 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042003564] [2022-01-31 12:05:19,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 12:05:19,565 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-31 12:05:19,566 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 12:05:19,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-31 12:05:19,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-31 12:05:19,598 INFO L87 Difference]: Start difference. First operand has 19 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 14 states have internal predecessors, (21), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 12:05:19,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 12:05:19,699 INFO L93 Difference]: Finished difference Result 39 states and 48 transitions. [2022-01-31 12:05:19,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-31 12:05:19,705 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 9 [2022-01-31 12:05:19,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 12:05:19,711 INFO L225 Difference]: With dead ends: 39 [2022-01-31 12:05:19,711 INFO L226 Difference]: Without dead ends: 33 [2022-01-31 12:05:19,713 INFO L932 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 [2022-01-31 12:05:19,716 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 28 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 12:05:19,718 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 25 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 12:05:19,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-01-31 12:05:19,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 16. [2022-01-31 12:05:19,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 12:05:19,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2022-01-31 12:05:19,747 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 9 [2022-01-31 12:05:19,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 12:05:19,748 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2022-01-31 12:05:19,748 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 12:05:19,748 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2022-01-31 12:05:19,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-01-31 12:05:19,749 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 12:05:19,750 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 12:05:19,750 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-31 12:05:19,750 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 12:05:19,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 12:05:19,753 INFO L85 PathProgramCache]: Analyzing trace with hash 195845143, now seen corresponding path program 1 times [2022-01-31 12:05:19,753 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 12:05:19,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047910186] [2022-01-31 12:05:19,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 12:05:19,754 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 12:05:19,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 12:05:19,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 12:05:19,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 12:05:19,844 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 12:05:19,844 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 12:05:19,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047910186] [2022-01-31 12:05:19,845 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047910186] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 12:05:19,845 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 12:05:19,846 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-31 12:05:19,846 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425181194] [2022-01-31 12:05:19,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 12:05:19,852 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-31 12:05:19,852 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 12:05:19,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-31 12:05:19,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-31 12:05:19,854 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 12:05:19,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 12:05:19,917 INFO L93 Difference]: Finished difference Result 31 states and 37 transitions. [2022-01-31 12:05:19,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-31 12:05:19,918 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2022-01-31 12:05:19,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 12:05:19,918 INFO L225 Difference]: With dead ends: 31 [2022-01-31 12:05:19,918 INFO L226 Difference]: Without dead ends: 31 [2022-01-31 12:05:19,919 INFO L932 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 [2022-01-31 12:05:19,920 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 18 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 12:05:19,920 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 20 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 12:05:19,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-01-31 12:05:19,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 17. [2022-01-31 12:05:19,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 states have internal predecessors, (16), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 12:05:19,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2022-01-31 12:05:19,924 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 12 [2022-01-31 12:05:19,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 12:05:19,924 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2022-01-31 12:05:19,924 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 12:05:19,925 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2022-01-31 12:05:19,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-01-31 12:05:19,925 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 12:05:19,925 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 12:05:19,925 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-31 12:05:19,926 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 12:05:19,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 12:05:19,926 INFO L85 PathProgramCache]: Analyzing trace with hash 1483649217, now seen corresponding path program 1 times [2022-01-31 12:05:19,927 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 12:05:19,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207856750] [2022-01-31 12:05:19,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 12:05:19,927 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 12:05:19,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 12:05:19,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 12:05:19,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 12:05:19,976 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 12:05:19,977 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 12:05:19,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207856750] [2022-01-31 12:05:19,977 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [207856750] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 12:05:19,977 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 12:05:19,977 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-31 12:05:19,977 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038446562] [2022-01-31 12:05:19,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 12:05:19,978 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-31 12:05:19,978 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 12:05:19,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-31 12:05:19,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-31 12:05:19,979 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 12:05:20,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 12:05:20,036 INFO L93 Difference]: Finished difference Result 21 states and 23 transitions. [2022-01-31 12:05:20,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-31 12:05:20,037 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2022-01-31 12:05:20,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 12:05:20,037 INFO L225 Difference]: With dead ends: 21 [2022-01-31 12:05:20,037 INFO L226 Difference]: Without dead ends: 21 [2022-01-31 12:05:20,038 INFO L932 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 [2022-01-31 12:05:20,039 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 4 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 12:05:20,039 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 26 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 12:05:20,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2022-01-31 12:05:20,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 18. [2022-01-31 12:05:20,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 12:05:20,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2022-01-31 12:05:20,042 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 15 [2022-01-31 12:05:20,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 12:05:20,043 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2022-01-31 12:05:20,043 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 12:05:20,043 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2022-01-31 12:05:20,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-31 12:05:20,044 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 12:05:20,044 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 12:05:20,044 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-31 12:05:20,044 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 12:05:20,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 12:05:20,045 INFO L85 PathProgramCache]: Analyzing trace with hash 1830037535, now seen corresponding path program 1 times [2022-01-31 12:05:20,045 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 12:05:20,045 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759097911] [2022-01-31 12:05:20,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 12:05:20,045 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 12:05:20,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 12:05:20,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 12:05:20,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 12:05:20,181 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 12:05:20,181 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 12:05:20,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759097911] [2022-01-31 12:05:20,181 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759097911] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 12:05:20,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [381957054] [2022-01-31 12:05:20,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 12:05:20,182 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 12:05:20,182 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 12:05:20,184 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) [2022-01-31 12:05:20,194 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-31 12:05:20,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 12:05:20,244 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-31 12:05:20,248 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 12:05:20,328 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-31 12:05:20,328 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 12:05:20,400 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-31 12:05:20,401 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [381957054] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 12:05:20,401 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 12:05:20,401 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 9 [2022-01-31 12:05:20,402 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547259368] [2022-01-31 12:05:20,402 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 12:05:20,403 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-31 12:05:20,403 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 12:05:20,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-31 12:05:20,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-01-31 12:05:20,405 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 8 states have internal predecessors, (29), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 12:05:20,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 12:05:20,642 INFO L93 Difference]: Finished difference Result 47 states and 52 transitions. [2022-01-31 12:05:20,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-31 12:05:20,643 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 8 states have internal predecessors, (29), 1 states have call successors, (3), 2 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 17 [2022-01-31 12:05:20,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 12:05:20,644 INFO L225 Difference]: With dead ends: 47 [2022-01-31 12:05:20,644 INFO L226 Difference]: Without dead ends: 47 [2022-01-31 12:05:20,645 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=120, Invalid=260, Unknown=0, NotChecked=0, Total=380 [2022-01-31 12:05:20,645 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 33 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 12:05:20,646 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 60 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 12:05:20,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2022-01-31 12:05:20,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 41. [2022-01-31 12:05:20,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 37 states have (on average 1.162162162162162) internal successors, (43), 37 states have internal predecessors, (43), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 12:05:20,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 46 transitions. [2022-01-31 12:05:20,650 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 46 transitions. Word has length 17 [2022-01-31 12:05:20,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 12:05:20,651 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 46 transitions. [2022-01-31 12:05:20,651 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 8 states have internal predecessors, (29), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 12:05:20,651 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 46 transitions. [2022-01-31 12:05:20,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-01-31 12:05:20,652 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 12:05:20,652 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 12:05:20,678 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-31 12:05:20,875 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 12:05:20,875 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 12:05:20,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 12:05:20,876 INFO L85 PathProgramCache]: Analyzing trace with hash -88142185, now seen corresponding path program 2 times [2022-01-31 12:05:20,876 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 12:05:20,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400748127] [2022-01-31 12:05:20,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 12:05:20,876 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 12:05:20,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 12:05:21,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 12:05:21,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 12:05:21,051 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 44 proven. 4 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2022-01-31 12:05:21,051 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 12:05:21,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400748127] [2022-01-31 12:05:21,053 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400748127] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 12:05:21,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1149795737] [2022-01-31 12:05:21,053 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-31 12:05:21,053 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 12:05:21,054 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 12:05:21,055 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-31 12:05:21,056 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-31 12:05:21,107 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-01-31 12:05:21,108 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 12:05:21,108 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-31 12:05:21,116 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 12:05:21,193 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2022-01-31 12:05:21,193 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-31 12:05:21,193 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1149795737] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 12:05:21,193 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-31 12:05:21,194 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2022-01-31 12:05:21,194 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367552047] [2022-01-31 12:05:21,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 12:05:21,194 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-31 12:05:21,194 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 12:05:21,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-31 12:05:21,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-01-31 12:05:21,195 INFO L87 Difference]: Start difference. First operand 41 states and 46 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 12:05:21,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 12:05:21,197 INFO L93 Difference]: Finished difference Result 39 states and 44 transitions. [2022-01-31 12:05:21,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-31 12:05:21,197 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 40 [2022-01-31 12:05:21,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 12:05:21,197 INFO L225 Difference]: With dead ends: 39 [2022-01-31 12:05:21,197 INFO L226 Difference]: Without dead ends: 0 [2022-01-31 12:05:21,198 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-01-31 12:05:21,198 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 0 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 12:05:21,199 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 12:05:21,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-01-31 12:05:21,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-01-31 12:05:21,199 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) [2022-01-31 12:05:21,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-01-31 12:05:21,200 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 40 [2022-01-31 12:05:21,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 12:05:21,200 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-01-31 12:05:21,200 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 12:05:21,200 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-01-31 12:05:21,200 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-01-31 12:05:21,202 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-01-31 12:05:21,228 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-31 12:05:21,415 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 12:05:21,419 INFO L732 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1] [2022-01-31 12:05:21,420 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-01-31 12:05:21,423 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.01 12:05:21 BasicIcfg [2022-01-31 12:05:21,423 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-31 12:05:21,423 INFO L158 Benchmark]: Toolchain (without parser) took 2813.26ms. Allocated memory was 183.5MB in the beginning and 270.5MB in the end (delta: 87.0MB). Free memory was 127.6MB in the beginning and 95.4MB in the end (delta: 32.2MB). Peak memory consumption was 119.2MB. Max. memory is 8.0GB. [2022-01-31 12:05:21,424 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 183.5MB. Free memory is still 144.6MB. There was no memory consumed. Max. memory is 8.0GB. [2022-01-31 12:05:21,424 INFO L158 Benchmark]: CACSL2BoogieTranslator took 244.77ms. Allocated memory was 183.5MB in the beginning and 270.5MB in the end (delta: 87.0MB). Free memory was 127.4MB in the beginning and 209.1MB in the end (delta: -81.8MB). Peak memory consumption was 8.5MB. Max. memory is 8.0GB. [2022-01-31 12:05:21,424 INFO L158 Benchmark]: Boogie Preprocessor took 34.07ms. Allocated memory is still 270.5MB. Free memory was 209.1MB in the beginning and 207.6MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-01-31 12:05:21,424 INFO L158 Benchmark]: RCFGBuilder took 259.83ms. Allocated memory is still 270.5MB. Free memory was 207.6MB in the beginning and 195.5MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2022-01-31 12:05:21,425 INFO L158 Benchmark]: IcfgTransformer took 18.57ms. Allocated memory is still 270.5MB. Free memory was 195.5MB in the beginning and 194.5MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-01-31 12:05:21,425 INFO L158 Benchmark]: TraceAbstraction took 2234.74ms. Allocated memory is still 270.5MB. Free memory was 194.0MB in the beginning and 95.4MB in the end (delta: 98.6MB). Peak memory consumption was 98.6MB. Max. memory is 8.0GB. [2022-01-31 12:05:21,426 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 183.5MB. Free memory is still 144.6MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 244.77ms. Allocated memory was 183.5MB in the beginning and 270.5MB in the end (delta: 87.0MB). Free memory was 127.4MB in the beginning and 209.1MB in the end (delta: -81.8MB). Peak memory consumption was 8.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 34.07ms. Allocated memory is still 270.5MB. Free memory was 209.1MB in the beginning and 207.6MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 259.83ms. Allocated memory is still 270.5MB. Free memory was 207.6MB in the beginning and 195.5MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * IcfgTransformer took 18.57ms. Allocated memory is still 270.5MB. Free memory was 195.5MB in the beginning and 194.5MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * TraceAbstraction took 2234.74ms. Allocated memory is still 270.5MB. Free memory was 194.0MB in the beginning and 95.4MB in the end (delta: 98.6MB). Peak memory consumption was 98.6MB. 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: 21]: 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 3 procedures, 19 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.2s, OverallIterations: 5, TraceHistogramMax: 8, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 83 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 83 mSDsluCounter, 151 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 80 mSDsCounter, 29 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 155 IncrementalHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 29 mSolverCounterUnsat, 71 mSDtfsCounter, 155 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 114 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=41occurred in iteration=4, InterpolantAutomatonStates: 35, 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, 5 MinimizatonAttempts, 40 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 150 NumberOfCodeBlocks, 119 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 159 ConstructedInterpolants, 0 QuantifiedInterpolants, 396 SizeOfPredicates, 2 NumberOfNonLiveVariables, 177 ConjunctsInSsa, 8 ConjunctsInUnsatCore, 8 InterpolantComputations, 4 PerfectInterpolantSequences, 227/234 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! [2022-01-31 12:05:21,446 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...