/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCTransformed.xml -s ../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf -i ../../../trunk/examples/svcomp/loop-lit/gj2007.c.i.p+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-5d317bd [2022-03-18 17:16:02,913 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-18 17:16:02,914 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-18 17:16:02,947 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-03-18 17:16:02,958 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-18 17:16:02,960 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-18 17:16:02,961 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-18 17:16:02,963 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-18 17:16:02,963 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-18 17:16:02,964 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-18 17:16:02,965 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-18 17:16:02,969 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-18 17:16:02,970 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-03-18 17:16:02,971 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-18 17:16:02,971 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-18 17:16:02,972 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-18 17:16:02,973 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-18 17:16:02,976 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-03-18 17:16:02,981 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-18 17:16:02,982 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-18 17:16:02,983 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-18 17:16:02,983 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2022-03-18 17:16:02,990 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-18 17:16:02,991 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-18 17:16:02,992 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-18 17:16:02,992 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-18 17:16:02,992 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-18 17:16:02,993 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-18 17:16:02,993 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-18 17:16:02,993 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-18 17:16:02,993 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-18 17:16:02,993 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-18 17:16:02,994 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-18 17:16:02,994 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-18 17:16:02,994 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-18 17:16:02,994 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-18 17:16:02,994 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-18 17:16:02,994 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-18 17:16:02,994 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-18 17:16:02,994 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-18 17:16:02,994 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-18 17:16:02,995 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-18 17:16:02,995 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-18 17:16:02,995 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-03-18 17:16:02,995 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-03-18 17:16:03,185 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-18 17:16:03,213 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-18 17:16:03,214 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-18 17:16:03,215 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-18 17:16:03,216 INFO L275 PluginConnector]: CDTParser initialized [2022-03-18 17:16:03,217 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/gj2007.c.i.p+lhb-reducer.c [2022-03-18 17:16:03,269 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d6c7f677e/32605553ab0645fe9a387e8f22e6e59c/FLAGb7abb533a [2022-03-18 17:16:03,641 INFO L306 CDTParser]: Found 1 translation units. [2022-03-18 17:16:03,642 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/gj2007.c.i.p+lhb-reducer.c [2022-03-18 17:16:03,648 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d6c7f677e/32605553ab0645fe9a387e8f22e6e59c/FLAGb7abb533a [2022-03-18 17:16:03,660 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d6c7f677e/32605553ab0645fe9a387e8f22e6e59c [2022-03-18 17:16:03,662 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-18 17:16:03,663 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-03-18 17:16:03,666 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-18 17:16:03,666 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-18 17:16:03,669 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-18 17:16:03,669 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.03 05:16:03" (1/1) ... [2022-03-18 17:16:03,670 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57dfaeb1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 05:16:03, skipping insertion in model container [2022-03-18 17:16:03,670 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.03 05:16:03" (1/1) ... [2022-03-18 17:16:03,674 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-18 17:16:03,693 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-18 17:16:03,858 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/gj2007.c.i.p+lhb-reducer.c[1613,1626] [2022-03-18 17:16:03,870 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-18 17:16:03,880 INFO L203 MainTranslator]: Completed pre-run [2022-03-18 17:16:03,903 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/gj2007.c.i.p+lhb-reducer.c[1613,1626] [2022-03-18 17:16:03,909 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-18 17:16:03,919 INFO L208 MainTranslator]: Completed translation [2022-03-18 17:16:03,919 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 05:16:03 WrapperNode [2022-03-18 17:16:03,919 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-18 17:16:03,920 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-18 17:16:03,920 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-18 17:16:03,920 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-18 17:16:03,929 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 05:16:03" (1/1) ... [2022-03-18 17:16:03,929 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 05:16:03" (1/1) ... [2022-03-18 17:16:03,934 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 05:16:03" (1/1) ... [2022-03-18 17:16:03,934 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 05:16:03" (1/1) ... [2022-03-18 17:16:03,946 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 05:16:03" (1/1) ... [2022-03-18 17:16:03,950 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 05:16:03" (1/1) ... [2022-03-18 17:16:03,954 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 05:16:03" (1/1) ... [2022-03-18 17:16:03,955 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-18 17:16:03,955 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-18 17:16:03,955 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-18 17:16:03,955 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-18 17:16:03,958 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 05:16:03" (1/1) ... [2022-03-18 17:16:03,962 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-18 17:16:03,969 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 17:16:03,978 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) [2022-03-18 17:16:03,980 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 [2022-03-18 17:16:04,009 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-03-18 17:16:04,009 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-18 17:16:04,010 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-03-18 17:16:04,010 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-03-18 17:16:04,010 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-03-18 17:16:04,011 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-03-18 17:16:04,011 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-03-18 17:16:04,011 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-03-18 17:16:04,011 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-18 17:16:04,011 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-03-18 17:16:04,011 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-03-18 17:16:04,011 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-03-18 17:16:04,012 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-03-18 17:16:04,012 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-03-18 17:16:04,012 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-18 17:16:04,014 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-18 17:16:04,015 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-18 17:16:04,015 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-18 17:16:04,015 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-18 17:16:04,059 INFO L234 CfgBuilder]: Building ICFG [2022-03-18 17:16:04,060 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-18 17:16:04,179 INFO L275 CfgBuilder]: Performing block encoding [2022-03-18 17:16:04,182 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-18 17:16:04,183 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-03-18 17:16:04,184 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.03 05:16:04 BoogieIcfgContainer [2022-03-18 17:16:04,184 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-18 17:16:04,184 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-03-18 17:16:04,184 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-03-18 17:16:04,185 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-03-18 17:16:04,187 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.03 05:16:04" (1/1) ... [2022-03-18 17:16:04,203 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 18.03 05:16:04 BasicIcfg [2022-03-18 17:16:04,203 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-03-18 17:16:04,205 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-18 17:16:04,205 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-18 17:16:04,206 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-18 17:16:04,207 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.03 05:16:03" (1/4) ... [2022-03-18 17:16:04,207 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ad37cec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.03 05:16:04, skipping insertion in model container [2022-03-18 17:16:04,207 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 05:16:03" (2/4) ... [2022-03-18 17:16:04,207 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ad37cec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.03 05:16:04, skipping insertion in model container [2022-03-18 17:16:04,207 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.03 05:16:04" (3/4) ... [2022-03-18 17:16:04,208 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ad37cec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.03 05:16:04, skipping insertion in model container [2022-03-18 17:16:04,208 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 18.03 05:16:04" (4/4) ... [2022-03-18 17:16:04,208 INFO L111 eAbstractionObserver]: Analyzing ICFG gj2007.c.i.p+lhb-reducer.cJordan [2022-03-18 17:16:04,212 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2022-03-18 17:16:04,212 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-18 17:16:04,238 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-18 17:16:04,242 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 [2022-03-18 17:16:04,242 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-03-18 17:16:04,268 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 27 states have (on average 1.8148148148148149) internal successors, (49), 28 states have internal predecessors, (49), 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) [2022-03-18 17:16:04,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-03-18 17:16:04,273 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 17:16:04,274 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 17:16:04,274 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 17:16:04,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 17:16:04,278 INFO L85 PathProgramCache]: Analyzing trace with hash 538022728, now seen corresponding path program 1 times [2022-03-18 17:16:04,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 17:16:04,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888669031] [2022-03-18 17:16:04,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 17:16:04,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 17:16:04,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 17:16:04,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 17:16:04,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 17:16:04,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 17:16:04,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 17:16:04,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888669031] [2022-03-18 17:16:04,534 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888669031] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 17:16:04,534 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 17:16:04,534 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-18 17:16:04,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490795035] [2022-03-18 17:16:04,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 17:16:04,538 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-18 17:16:04,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 17:16:04,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-18 17:16:04,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-18 17:16:04,563 INFO L87 Difference]: Start difference. First operand has 33 states, 27 states have (on average 1.8148148148148149) internal successors, (49), 28 states have internal predecessors, (49), 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 6.0) internal successors, (24), 3 states have internal predecessors, (24), 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) [2022-03-18 17:16:04,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 17:16:04,745 INFO L93 Difference]: Finished difference Result 53 states and 80 transitions. [2022-03-18 17:16:04,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-18 17:16:04,747 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 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 27 [2022-03-18 17:16:04,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 17:16:04,752 INFO L225 Difference]: With dead ends: 53 [2022-03-18 17:16:04,752 INFO L226 Difference]: Without dead ends: 47 [2022-03-18 17:16:04,754 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-18 17:16:04,758 INFO L912 BasicCegarLoop]: 13 mSDtfsCounter, 60 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-18 17:16:04,758 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [60 Valid, 22 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-18 17:16:04,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2022-03-18 17:16:04,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 30. [2022-03-18 17:16:04,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 26 states have (on average 1.4230769230769231) internal successors, (37), 26 states have internal predecessors, (37), 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) [2022-03-18 17:16:04,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 40 transitions. [2022-03-18 17:16:04,783 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 40 transitions. Word has length 27 [2022-03-18 17:16:04,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 17:16:04,783 INFO L478 AbstractCegarLoop]: Abstraction has 30 states and 40 transitions. [2022-03-18 17:16:04,784 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 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) [2022-03-18 17:16:04,784 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 40 transitions. [2022-03-18 17:16:04,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-03-18 17:16:04,785 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 17:16:04,785 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 17:16:04,786 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-18 17:16:04,786 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 17:16:04,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 17:16:04,789 INFO L85 PathProgramCache]: Analyzing trace with hash 538052519, now seen corresponding path program 1 times [2022-03-18 17:16:04,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 17:16:04,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358563259] [2022-03-18 17:16:04,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 17:16:04,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 17:16:04,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 17:16:04,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 17:16:04,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 17:16:04,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 17:16:04,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 17:16:04,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358563259] [2022-03-18 17:16:04,965 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358563259] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 17:16:04,965 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 17:16:04,965 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-18 17:16:04,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188043932] [2022-03-18 17:16:04,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 17:16:04,967 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-18 17:16:04,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 17:16:04,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-18 17:16:04,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2022-03-18 17:16:04,969 INFO L87 Difference]: Start difference. First operand 30 states and 40 transitions. Second operand has 12 states, 12 states have (on average 2.0) internal successors, (24), 11 states have internal predecessors, (24), 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) [2022-03-18 17:16:05,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 17:16:05,124 INFO L93 Difference]: Finished difference Result 30 states and 31 transitions. [2022-03-18 17:16:05,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-18 17:16:05,124 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.0) internal successors, (24), 11 states have internal predecessors, (24), 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 27 [2022-03-18 17:16:05,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 17:16:05,125 INFO L225 Difference]: With dead ends: 30 [2022-03-18 17:16:05,125 INFO L226 Difference]: Without dead ends: 30 [2022-03-18 17:16:05,125 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=165, Invalid=255, Unknown=0, NotChecked=0, Total=420 [2022-03-18 17:16:05,126 INFO L912 BasicCegarLoop]: 12 mSDtfsCounter, 27 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-18 17:16:05,126 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 39 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-18 17:16:05,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-03-18 17:16:05,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2022-03-18 17:16:05,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 26 states have (on average 1.0769230769230769) internal successors, (28), 26 states have internal predecessors, (28), 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) [2022-03-18 17:16:05,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2022-03-18 17:16:05,129 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 27 [2022-03-18 17:16:05,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 17:16:05,129 INFO L478 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2022-03-18 17:16:05,129 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.0) internal successors, (24), 11 states have internal predecessors, (24), 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) [2022-03-18 17:16:05,129 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2022-03-18 17:16:05,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-03-18 17:16:05,130 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 17:16:05,130 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 17:16:05,130 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-18 17:16:05,130 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 17:16:05,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 17:16:05,131 INFO L85 PathProgramCache]: Analyzing trace with hash 1642813573, now seen corresponding path program 1 times [2022-03-18 17:16:05,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 17:16:05,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203068493] [2022-03-18 17:16:05,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 17:16:05,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 17:16:05,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 17:16:05,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 17:16:05,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 17:16:05,221 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 17:16:05,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 17:16:05,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203068493] [2022-03-18 17:16:05,221 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203068493] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 17:16:05,221 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 17:16:05,221 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-18 17:16:05,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857441671] [2022-03-18 17:16:05,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 17:16:05,222 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-18 17:16:05,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 17:16:05,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-18 17:16:05,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2022-03-18 17:16:05,222 INFO L87 Difference]: Start difference. First operand 30 states and 31 transitions. Second operand has 13 states, 13 states have (on average 2.0) internal successors, (26), 12 states have internal predecessors, (26), 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) [2022-03-18 17:16:05,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 17:16:05,373 INFO L93 Difference]: Finished difference Result 32 states and 33 transitions. [2022-03-18 17:16:05,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-18 17:16:05,374 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.0) internal successors, (26), 12 states have internal predecessors, (26), 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 29 [2022-03-18 17:16:05,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 17:16:05,374 INFO L225 Difference]: With dead ends: 32 [2022-03-18 17:16:05,374 INFO L226 Difference]: Without dead ends: 32 [2022-03-18 17:16:05,375 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=198, Invalid=308, Unknown=0, NotChecked=0, Total=506 [2022-03-18 17:16:05,376 INFO L912 BasicCegarLoop]: 10 mSDtfsCounter, 38 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-18 17:16:05,376 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 22 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-18 17:16:05,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-03-18 17:16:05,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2022-03-18 17:16:05,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 28 states have (on average 1.0714285714285714) internal successors, (30), 28 states have internal predecessors, (30), 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) [2022-03-18 17:16:05,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 33 transitions. [2022-03-18 17:16:05,378 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 33 transitions. Word has length 29 [2022-03-18 17:16:05,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 17:16:05,379 INFO L478 AbstractCegarLoop]: Abstraction has 32 states and 33 transitions. [2022-03-18 17:16:05,387 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.0) internal successors, (26), 12 states have internal predecessors, (26), 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) [2022-03-18 17:16:05,388 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 33 transitions. [2022-03-18 17:16:05,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-03-18 17:16:05,388 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 17:16:05,388 INFO L500 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 17:16:05,388 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-03-18 17:16:05,389 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 17:16:05,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 17:16:05,389 INFO L85 PathProgramCache]: Analyzing trace with hash -1833702941, now seen corresponding path program 1 times [2022-03-18 17:16:05,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 17:16:05,389 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627438190] [2022-03-18 17:16:05,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 17:16:05,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 17:16:05,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 17:16:05,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 17:16:05,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 17:16:05,486 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 17:16:05,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 17:16:05,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627438190] [2022-03-18 17:16:05,486 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627438190] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 17:16:05,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [689494608] [2022-03-18 17:16:05,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 17:16:05,486 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 17:16:05,487 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 17:16:05,488 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) [2022-03-18 17:16:05,491 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-03-18 17:16:05,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 17:16:05,533 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 12 conjunts are in the unsatisfiable core [2022-03-18 17:16:05,538 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 17:16:05,688 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 17:16:05,688 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 17:16:05,953 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 17:16:05,953 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [689494608] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 17:16:05,954 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 17:16:05,954 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 26 [2022-03-18 17:16:05,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467384916] [2022-03-18 17:16:05,954 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 17:16:05,954 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-03-18 17:16:05,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 17:16:05,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-03-18 17:16:05,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2022-03-18 17:16:05,955 INFO L87 Difference]: Start difference. First operand 32 states and 33 transitions. Second operand has 26 states, 26 states have (on average 2.1153846153846154) internal successors, (55), 25 states have internal predecessors, (55), 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) [2022-03-18 17:16:06,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 17:16:06,219 INFO L93 Difference]: Finished difference Result 56 states and 57 transitions. [2022-03-18 17:16:06,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-03-18 17:16:06,219 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.1153846153846154) internal successors, (55), 25 states have internal predecessors, (55), 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 31 [2022-03-18 17:16:06,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 17:16:06,220 INFO L225 Difference]: With dead ends: 56 [2022-03-18 17:16:06,220 INFO L226 Difference]: Without dead ends: 56 [2022-03-18 17:16:06,221 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 346 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=853, Invalid=1403, Unknown=0, NotChecked=0, Total=2256 [2022-03-18 17:16:06,222 INFO L912 BasicCegarLoop]: 10 mSDtfsCounter, 92 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-18 17:16:06,222 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [92 Valid, 17 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-18 17:16:06,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2022-03-18 17:16:06,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2022-03-18 17:16:06,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 52 states have (on average 1.0384615384615385) internal successors, (54), 52 states have internal predecessors, (54), 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) [2022-03-18 17:16:06,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 57 transitions. [2022-03-18 17:16:06,225 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 57 transitions. Word has length 31 [2022-03-18 17:16:06,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 17:16:06,226 INFO L478 AbstractCegarLoop]: Abstraction has 56 states and 57 transitions. [2022-03-18 17:16:06,226 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.1153846153846154) internal successors, (55), 25 states have internal predecessors, (55), 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) [2022-03-18 17:16:06,226 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 57 transitions. [2022-03-18 17:16:06,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-03-18 17:16:06,227 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 17:16:06,227 INFO L500 BasicCegarLoop]: trace histogram [14, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 17:16:06,248 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-03-18 17:16:06,447 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 17:16:06,448 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 17:16:06,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 17:16:06,448 INFO L85 PathProgramCache]: Analyzing trace with hash 171106635, now seen corresponding path program 2 times [2022-03-18 17:16:06,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 17:16:06,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471285619] [2022-03-18 17:16:06,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 17:16:06,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 17:16:06,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 17:16:06,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 17:16:06,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 17:16:06,700 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 14 proven. 182 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 17:16:06,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 17:16:06,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471285619] [2022-03-18 17:16:06,701 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471285619] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 17:16:06,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [754351359] [2022-03-18 17:16:06,701 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 17:16:06,701 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 17:16:06,701 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 17:16:06,703 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) [2022-03-18 17:16:06,705 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-03-18 17:16:06,751 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-18 17:16:06,751 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 17:16:06,752 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-18 17:16:06,755 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 17:16:06,848 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 14 proven. 182 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 17:16:06,848 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 17:16:07,478 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 14 proven. 182 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 17:16:07,478 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [754351359] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 17:16:07,478 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 17:16:07,478 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 25, 25] total 50 [2022-03-18 17:16:07,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642899520] [2022-03-18 17:16:07,479 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 17:16:07,479 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-03-18 17:16:07,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 17:16:07,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-03-18 17:16:07,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1178, Invalid=1272, Unknown=0, NotChecked=0, Total=2450 [2022-03-18 17:16:07,481 INFO L87 Difference]: Start difference. First operand 56 states and 57 transitions. Second operand has 50 states, 50 states have (on average 2.06) internal successors, (103), 49 states have internal predecessors, (103), 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) [2022-03-18 17:16:08,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 17:16:08,527 INFO L93 Difference]: Finished difference Result 104 states and 105 transitions. [2022-03-18 17:16:08,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-03-18 17:16:08,528 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 2.06) internal successors, (103), 49 states have internal predecessors, (103), 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 55 [2022-03-18 17:16:08,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 17:16:08,529 INFO L225 Difference]: With dead ends: 104 [2022-03-18 17:16:08,529 INFO L226 Difference]: Without dead ends: 104 [2022-03-18 17:16:08,531 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1420 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=3433, Invalid=5687, Unknown=0, NotChecked=0, Total=9120 [2022-03-18 17:16:08,532 INFO L912 BasicCegarLoop]: 10 mSDtfsCounter, 144 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 143 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-18 17:16:08,532 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [144 Valid, 42 Invalid, 310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [143 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-18 17:16:08,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2022-03-18 17:16:08,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2022-03-18 17:16:08,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 100 states have (on average 1.02) internal successors, (102), 100 states have internal predecessors, (102), 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) [2022-03-18 17:16:08,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 105 transitions. [2022-03-18 17:16:08,537 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 105 transitions. Word has length 55 [2022-03-18 17:16:08,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 17:16:08,537 INFO L478 AbstractCegarLoop]: Abstraction has 104 states and 105 transitions. [2022-03-18 17:16:08,537 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 2.06) internal successors, (103), 49 states have internal predecessors, (103), 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) [2022-03-18 17:16:08,537 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 105 transitions. [2022-03-18 17:16:08,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-03-18 17:16:08,538 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 17:16:08,538 INFO L500 BasicCegarLoop]: trace histogram [38, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 17:16:08,561 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-03-18 17:16:08,754 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 17:16:08,755 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 17:16:08,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 17:16:08,757 INFO L85 PathProgramCache]: Analyzing trace with hash -1936218085, now seen corresponding path program 3 times [2022-03-18 17:16:08,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 17:16:08,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194377983] [2022-03-18 17:16:08,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 17:16:08,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 17:16:08,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 17:16:09,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 17:16:09,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 17:16:09,565 INFO L134 CoverageAnalysis]: Checked inductivity of 1444 backedges. 38 proven. 1406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 17:16:09,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 17:16:09,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194377983] [2022-03-18 17:16:09,565 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194377983] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 17:16:09,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [251483208] [2022-03-18 17:16:09,565 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-18 17:16:09,565 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 17:16:09,566 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 17:16:09,567 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 17:16:09,616 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-03-18 17:16:09,620 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-03-18 17:16:09,620 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 17:16:09,620 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 4 conjunts are in the unsatisfiable core [2022-03-18 17:16:09,623 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 17:16:09,792 INFO L134 CoverageAnalysis]: Checked inductivity of 1444 backedges. 111 proven. 1 refuted. 0 times theorem prover too weak. 1332 trivial. 0 not checked. [2022-03-18 17:16:09,792 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 17:16:09,939 INFO L134 CoverageAnalysis]: Checked inductivity of 1444 backedges. 111 proven. 1 refuted. 0 times theorem prover too weak. 1332 trivial. 0 not checked. [2022-03-18 17:16:09,939 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [251483208] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 17:16:09,939 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 17:16:09,939 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 4, 4] total 54 [2022-03-18 17:16:09,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103473126] [2022-03-18 17:16:09,939 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 17:16:09,940 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-03-18 17:16:09,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 17:16:09,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-03-18 17:16:09,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1380, Invalid=1482, Unknown=0, NotChecked=0, Total=2862 [2022-03-18 17:16:09,942 INFO L87 Difference]: Start difference. First operand 104 states and 105 transitions. Second operand has 54 states, 54 states have (on average 2.4074074074074074) internal successors, (130), 53 states have internal predecessors, (130), 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) [2022-03-18 17:16:11,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 17:16:11,195 INFO L93 Difference]: Finished difference Result 112 states and 116 transitions. [2022-03-18 17:16:11,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-03-18 17:16:11,196 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 2.4074074074074074) internal successors, (130), 53 states have internal predecessors, (130), 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 103 [2022-03-18 17:16:11,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 17:16:11,197 INFO L225 Difference]: With dead ends: 112 [2022-03-18 17:16:11,197 INFO L226 Difference]: Without dead ends: 112 [2022-03-18 17:16:11,199 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 207 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1321 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=4134, Invalid=6786, Unknown=0, NotChecked=0, Total=10920 [2022-03-18 17:16:11,200 INFO L912 BasicCegarLoop]: 9 mSDtfsCounter, 145 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 154 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 154 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-18 17:16:11,200 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [145 Valid, 41 Invalid, 315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [154 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-18 17:16:11,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2022-03-18 17:16:11,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2022-03-18 17:16:11,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 108 states have (on average 1.0462962962962963) internal successors, (113), 108 states have internal predecessors, (113), 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) [2022-03-18 17:16:11,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 116 transitions. [2022-03-18 17:16:11,204 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 116 transitions. Word has length 103 [2022-03-18 17:16:11,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 17:16:11,222 INFO L478 AbstractCegarLoop]: Abstraction has 112 states and 116 transitions. [2022-03-18 17:16:11,222 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 2.4074074074074074) internal successors, (130), 53 states have internal predecessors, (130), 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) [2022-03-18 17:16:11,222 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 116 transitions. [2022-03-18 17:16:11,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-03-18 17:16:11,223 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 17:16:11,223 INFO L500 BasicCegarLoop]: trace histogram [42, 38, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 17:16:11,240 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-03-18 17:16:11,424 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 17:16:11,424 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 17:16:11,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 17:16:11,424 INFO L85 PathProgramCache]: Analyzing trace with hash -1431719632, now seen corresponding path program 4 times [2022-03-18 17:16:11,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 17:16:11,425 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603890615] [2022-03-18 17:16:11,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 17:16:11,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 17:16:11,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 17:16:12,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 17:16:12,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 17:16:12,278 INFO L134 CoverageAnalysis]: Checked inductivity of 1764 backedges. 273 proven. 1482 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-03-18 17:16:12,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 17:16:12,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603890615] [2022-03-18 17:16:12,279 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603890615] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 17:16:12,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [542214872] [2022-03-18 17:16:12,279 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-18 17:16:12,279 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 17:16:12,279 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 17:16:12,280 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 17:16:12,281 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-03-18 17:16:12,326 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-18 17:16:12,326 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 17:16:12,327 INFO L263 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 49 conjunts are in the unsatisfiable core [2022-03-18 17:16:12,337 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 17:16:12,505 INFO L134 CoverageAnalysis]: Checked inductivity of 1764 backedges. 273 proven. 1482 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-03-18 17:16:12,505 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 17:16:12,783 INFO L134 CoverageAnalysis]: Checked inductivity of 1764 backedges. 273 proven. 1482 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-03-18 17:16:12,784 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [542214872] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 17:16:12,784 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 17:16:12,784 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 50, 50] total 54 [2022-03-18 17:16:12,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781416105] [2022-03-18 17:16:12,784 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 17:16:12,784 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-03-18 17:16:12,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 17:16:12,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-03-18 17:16:12,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1380, Invalid=1482, Unknown=0, NotChecked=0, Total=2862 [2022-03-18 17:16:12,786 INFO L87 Difference]: Start difference. First operand 112 states and 116 transitions. Second operand has 54 states, 54 states have (on average 2.4444444444444446) internal successors, (132), 53 states have internal predecessors, (132), 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) [2022-03-18 17:16:13,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 17:16:13,985 INFO L93 Difference]: Finished difference Result 118 states and 122 transitions. [2022-03-18 17:16:13,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-03-18 17:16:13,985 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 2.4444444444444446) internal successors, (132), 53 states have internal predecessors, (132), 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 111 [2022-03-18 17:16:13,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 17:16:13,986 INFO L225 Difference]: With dead ends: 118 [2022-03-18 17:16:13,986 INFO L226 Difference]: Without dead ends: 118 [2022-03-18 17:16:13,988 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 323 GetRequests, 220 SyntacticMatches, 1 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1420 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=4031, Invalid=6681, Unknown=0, NotChecked=0, Total=10712 [2022-03-18 17:16:13,989 INFO L912 BasicCegarLoop]: 10 mSDtfsCounter, 101 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-18 17:16:13,989 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [101 Valid, 22 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-18 17:16:13,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2022-03-18 17:16:13,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2022-03-18 17:16:13,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 114 states have (on average 1.043859649122807) internal successors, (119), 114 states have internal predecessors, (119), 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) [2022-03-18 17:16:13,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 122 transitions. [2022-03-18 17:16:13,993 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 122 transitions. Word has length 111 [2022-03-18 17:16:13,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 17:16:13,994 INFO L478 AbstractCegarLoop]: Abstraction has 118 states and 122 transitions. [2022-03-18 17:16:13,994 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 2.4444444444444446) internal successors, (132), 53 states have internal predecessors, (132), 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) [2022-03-18 17:16:13,994 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 122 transitions. [2022-03-18 17:16:13,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-03-18 17:16:13,995 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 17:16:13,995 INFO L500 BasicCegarLoop]: trace histogram [45, 41, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 17:16:14,016 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-03-18 17:16:14,218 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 17:16:14,218 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 17:16:14,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 17:16:14,219 INFO L85 PathProgramCache]: Analyzing trace with hash -1878629302, now seen corresponding path program 5 times [2022-03-18 17:16:14,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 17:16:14,219 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301719516] [2022-03-18 17:16:14,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 17:16:14,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 17:16:14,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 17:16:15,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 17:16:15,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 17:16:15,285 INFO L134 CoverageAnalysis]: Checked inductivity of 2025 backedges. 0 proven. 2025 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 17:16:15,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 17:16:15,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301719516] [2022-03-18 17:16:15,285 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301719516] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 17:16:15,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [664466330] [2022-03-18 17:16:15,285 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-18 17:16:15,286 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 17:16:15,286 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 17:16:15,287 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 17:16:15,288 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-03-18 17:16:15,390 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 46 check-sat command(s) [2022-03-18 17:16:15,390 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 17:16:15,392 INFO L263 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 25 conjunts are in the unsatisfiable core [2022-03-18 17:16:15,398 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 17:16:16,228 INFO L134 CoverageAnalysis]: Checked inductivity of 2025 backedges. 1035 proven. 484 refuted. 0 times theorem prover too weak. 506 trivial. 0 not checked. [2022-03-18 17:16:16,228 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 17:16:17,006 INFO L134 CoverageAnalysis]: Checked inductivity of 2025 backedges. 1035 proven. 484 refuted. 0 times theorem prover too weak. 506 trivial. 0 not checked. [2022-03-18 17:16:17,006 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [664466330] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 17:16:17,006 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 17:16:17,006 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 25, 25] total 99 [2022-03-18 17:16:17,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264751718] [2022-03-18 17:16:17,006 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 17:16:17,007 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 99 states [2022-03-18 17:16:17,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 17:16:17,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2022-03-18 17:16:17,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4755, Invalid=4947, Unknown=0, NotChecked=0, Total=9702 [2022-03-18 17:16:17,010 INFO L87 Difference]: Start difference. First operand 118 states and 122 transitions. Second operand has 99 states, 99 states have (on average 2.2626262626262625) internal successors, (224), 98 states have internal predecessors, (224), 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) [2022-03-18 17:16:20,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 17:16:20,168 INFO L93 Difference]: Finished difference Result 202 states and 248 transitions. [2022-03-18 17:16:20,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2022-03-18 17:16:20,169 INFO L78 Accepts]: Start accepts. Automaton has has 99 states, 99 states have (on average 2.2626262626262625) internal successors, (224), 98 states have internal predecessors, (224), 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 117 [2022-03-18 17:16:20,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 17:16:20,170 INFO L225 Difference]: With dead ends: 202 [2022-03-18 17:16:20,170 INFO L226 Difference]: Without dead ends: 202 [2022-03-18 17:16:20,173 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 433 GetRequests, 239 SyntacticMatches, 1 SemanticMatches, 193 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4849 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=14259, Invalid=23571, Unknown=0, NotChecked=0, Total=37830 [2022-03-18 17:16:20,174 INFO L912 BasicCegarLoop]: 9 mSDtfsCounter, 302 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 601 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 302 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 850 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 601 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-18 17:16:20,174 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [302 Valid, 46 Invalid, 850 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [601 Valid, 249 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-18 17:16:20,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2022-03-18 17:16:20,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2022-03-18 17:16:20,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 198 states have (on average 1.2373737373737375) internal successors, (245), 198 states have internal predecessors, (245), 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) [2022-03-18 17:16:20,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 248 transitions. [2022-03-18 17:16:20,186 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 248 transitions. Word has length 117 [2022-03-18 17:16:20,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 17:16:20,187 INFO L478 AbstractCegarLoop]: Abstraction has 202 states and 248 transitions. [2022-03-18 17:16:20,187 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 99 states, 99 states have (on average 2.2626262626262625) internal successors, (224), 98 states have internal predecessors, (224), 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) [2022-03-18 17:16:20,187 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 248 transitions. [2022-03-18 17:16:20,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2022-03-18 17:16:20,188 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 17:16:20,189 INFO L500 BasicCegarLoop]: trace histogram [87, 46, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 17:16:20,206 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-03-18 17:16:20,399 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 17:16:20,400 INFO L403 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 17:16:20,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 17:16:20,400 INFO L85 PathProgramCache]: Analyzing trace with hash -1130384116, now seen corresponding path program 6 times [2022-03-18 17:16:20,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 17:16:20,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284880863] [2022-03-18 17:16:20,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 17:16:20,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 17:16:20,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 17:16:23,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 17:16:23,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 17:16:23,410 INFO L134 CoverageAnalysis]: Checked inductivity of 7569 backedges. 0 proven. 7569 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 17:16:23,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 17:16:23,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284880863] [2022-03-18 17:16:23,411 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1284880863] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 17:16:23,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1615319785] [2022-03-18 17:16:23,411 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-18 17:16:23,411 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 17:16:23,411 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 17:16:23,418 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 17:16:23,421 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-03-18 17:16:23,536 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 87 check-sat command(s) [2022-03-18 17:16:23,537 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 17:16:23,538 INFO L263 TraceCheckSpWp]: Trace formula consists of 537 conjuncts, 49 conjunts are in the unsatisfiable core [2022-03-18 17:16:23,541 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 17:16:23,877 INFO L134 CoverageAnalysis]: Checked inductivity of 7569 backedges. 3813 proven. 2116 refuted. 0 times theorem prover too weak. 1640 trivial. 0 not checked. [2022-03-18 17:16:23,877 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 17:16:24,335 INFO L134 CoverageAnalysis]: Checked inductivity of 7569 backedges. 3813 proven. 2116 refuted. 0 times theorem prover too weak. 1640 trivial. 0 not checked. [2022-03-18 17:16:24,335 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1615319785] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 17:16:24,335 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 17:16:24,335 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [100, 49, 49] total 103 [2022-03-18 17:16:24,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528260788] [2022-03-18 17:16:24,335 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 17:16:24,336 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 103 states [2022-03-18 17:16:24,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 17:16:24,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2022-03-18 17:16:24,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5153, Invalid=5353, Unknown=0, NotChecked=0, Total=10506 [2022-03-18 17:16:24,338 INFO L87 Difference]: Start difference. First operand 202 states and 248 transitions. Second operand has 103 states, 103 states have (on average 2.2233009708737863) internal successors, (229), 102 states have internal predecessors, (229), 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) [2022-03-18 17:16:28,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 17:16:28,071 INFO L93 Difference]: Finished difference Result 210 states and 260 transitions. [2022-03-18 17:16:28,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2022-03-18 17:16:28,072 INFO L78 Accepts]: Start accepts. Automaton has has 103 states, 103 states have (on average 2.2233009708737863) internal successors, (229), 102 states have internal predecessors, (229), 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 201 [2022-03-18 17:16:28,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 17:16:28,073 INFO L225 Difference]: With dead ends: 210 [2022-03-18 17:16:28,073 INFO L226 Difference]: Without dead ends: 210 [2022-03-18 17:16:28,075 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 651 GetRequests, 448 SyntacticMatches, 2 SemanticMatches, 201 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5096 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=15453, Invalid=25553, Unknown=0, NotChecked=0, Total=41006 [2022-03-18 17:16:28,075 INFO L912 BasicCegarLoop]: 9 mSDtfsCounter, 238 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 838 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 238 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 1090 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 838 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-18 17:16:28,075 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [238 Valid, 26 Invalid, 1090 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [838 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-18 17:16:28,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2022-03-18 17:16:28,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 210. [2022-03-18 17:16:28,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 206 states have (on average 1.2475728155339805) internal successors, (257), 206 states have internal predecessors, (257), 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) [2022-03-18 17:16:28,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 260 transitions. [2022-03-18 17:16:28,080 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 260 transitions. Word has length 201 [2022-03-18 17:16:28,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 17:16:28,080 INFO L478 AbstractCegarLoop]: Abstraction has 210 states and 260 transitions. [2022-03-18 17:16:28,080 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 103 states, 103 states have (on average 2.2233009708737863) internal successors, (229), 102 states have internal predecessors, (229), 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) [2022-03-18 17:16:28,080 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 260 transitions. [2022-03-18 17:16:28,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2022-03-18 17:16:28,081 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 17:16:28,082 INFO L500 BasicCegarLoop]: trace histogram [91, 50, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 17:16:28,104 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-03-18 17:16:28,300 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 17:16:28,300 INFO L403 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 17:16:28,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 17:16:28,301 INFO L85 PathProgramCache]: Analyzing trace with hash 604234368, now seen corresponding path program 7 times [2022-03-18 17:16:28,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 17:16:28,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556728234] [2022-03-18 17:16:28,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 17:16:28,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 17:16:28,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 17:16:29,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 17:16:29,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 17:16:29,507 INFO L134 CoverageAnalysis]: Checked inductivity of 8281 backedges. 0 proven. 6559 refuted. 0 times theorem prover too weak. 1722 trivial. 0 not checked. [2022-03-18 17:16:29,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 17:16:29,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556728234] [2022-03-18 17:16:29,507 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556728234] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 17:16:29,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [197577367] [2022-03-18 17:16:29,507 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-18 17:16:29,507 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 17:16:29,508 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 17:16:29,509 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 17:16:29,510 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-03-18 17:16:29,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 17:16:29,590 INFO L263 TraceCheckSpWp]: Trace formula consists of 565 conjuncts, 105 conjunts are in the unsatisfiable core [2022-03-18 17:16:29,593 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 17:16:30,132 INFO L134 CoverageAnalysis]: Checked inductivity of 8281 backedges. 0 proven. 6559 refuted. 0 times theorem prover too weak. 1722 trivial. 0 not checked. [2022-03-18 17:16:30,132 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 17:16:30,621 INFO L134 CoverageAnalysis]: Checked inductivity of 8281 backedges. 0 proven. 6559 refuted. 0 times theorem prover too weak. 1722 trivial. 0 not checked. [2022-03-18 17:16:30,622 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [197577367] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 17:16:30,622 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 17:16:30,622 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 54, 54] total 56 [2022-03-18 17:16:30,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697005541] [2022-03-18 17:16:30,622 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 17:16:30,622 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2022-03-18 17:16:30,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 17:16:30,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2022-03-18 17:16:30,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=2970, Unknown=0, NotChecked=0, Total=3080 [2022-03-18 17:16:30,623 INFO L87 Difference]: Start difference. First operand 210 states and 260 transitions. Second operand has 56 states, 56 states have (on average 2.2857142857142856) internal successors, (128), 55 states have internal predecessors, (128), 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) [2022-03-18 17:16:34,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 17:16:34,382 INFO L93 Difference]: Finished difference Result 2862 states and 4237 transitions. [2022-03-18 17:16:34,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-03-18 17:16:34,383 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 2.2857142857142856) internal successors, (128), 55 states have internal predecessors, (128), 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 209 [2022-03-18 17:16:34,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 17:16:34,393 INFO L225 Difference]: With dead ends: 2862 [2022-03-18 17:16:34,394 INFO L226 Difference]: Without dead ends: 2861 [2022-03-18 17:16:34,395 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 525 GetRequests, 414 SyntacticMatches, 5 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1376 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=321, Invalid=11235, Unknown=0, NotChecked=0, Total=11556 [2022-03-18 17:16:34,395 INFO L912 BasicCegarLoop]: 128 mSDtfsCounter, 180 mSDsluCounter, 262 mSDsCounter, 0 mSdLazyCounter, 8982 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 390 SdHoareTripleChecker+Invalid, 9034 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 8982 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-03-18 17:16:34,396 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [180 Valid, 390 Invalid, 9034 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 8982 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-03-18 17:16:34,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2861 states. [2022-03-18 17:16:34,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2861 to 212. [2022-03-18 17:16:34,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 208 states have (on average 1.25) internal successors, (260), 208 states have internal predecessors, (260), 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) [2022-03-18 17:16:34,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 263 transitions. [2022-03-18 17:16:34,418 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 263 transitions. Word has length 209 [2022-03-18 17:16:34,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 17:16:34,418 INFO L478 AbstractCegarLoop]: Abstraction has 212 states and 263 transitions. [2022-03-18 17:16:34,418 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 2.2857142857142856) internal successors, (128), 55 states have internal predecessors, (128), 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) [2022-03-18 17:16:34,418 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 263 transitions. [2022-03-18 17:16:34,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2022-03-18 17:16:34,421 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 17:16:34,421 INFO L500 BasicCegarLoop]: trace histogram [92, 51, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 17:16:34,438 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-03-18 17:16:34,628 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 17:16:34,628 INFO L403 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 17:16:34,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 17:16:34,629 INFO L85 PathProgramCache]: Analyzing trace with hash 847690173, now seen corresponding path program 8 times [2022-03-18 17:16:34,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 17:16:34,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712468698] [2022-03-18 17:16:34,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 17:16:34,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 17:16:34,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 17:16:35,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 17:16:35,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 17:16:35,568 INFO L134 CoverageAnalysis]: Checked inductivity of 8464 backedges. 6742 proven. 0 refuted. 0 times theorem prover too weak. 1722 trivial. 0 not checked. [2022-03-18 17:16:35,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 17:16:35,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712468698] [2022-03-18 17:16:35,569 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712468698] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 17:16:35,569 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 17:16:35,570 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [53] imperfect sequences [] total 53 [2022-03-18 17:16:35,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483723622] [2022-03-18 17:16:35,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 17:16:35,570 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-03-18 17:16:35,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 17:16:35,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-03-18 17:16:35,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1328, Invalid=1428, Unknown=0, NotChecked=0, Total=2756 [2022-03-18 17:16:35,571 INFO L87 Difference]: Start difference. First operand 212 states and 263 transitions. Second operand has 53 states, 53 states have (on average 2.3962264150943398) internal successors, (127), 52 states have internal predecessors, (127), 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) [2022-03-18 17:16:36,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 17:16:36,594 INFO L93 Difference]: Finished difference Result 207 states and 207 transitions. [2022-03-18 17:16:36,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-03-18 17:16:36,594 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 2.3962264150943398) internal successors, (127), 52 states have internal predecessors, (127), 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 211 [2022-03-18 17:16:36,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 17:16:36,595 INFO L225 Difference]: With dead ends: 207 [2022-03-18 17:16:36,595 INFO L226 Difference]: Without dead ends: 0 [2022-03-18 17:16:36,596 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1225 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=3978, Invalid=6528, Unknown=0, NotChecked=0, Total=10506 [2022-03-18 17:16:36,597 INFO L912 BasicCegarLoop]: 27 mSDtfsCounter, 22 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 537 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 539 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 537 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-18 17:16:36,597 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 39 Invalid, 539 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 537 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-18 17:16:36,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-03-18 17:16:36,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-03-18 17:16:36,598 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) [2022-03-18 17:16:36,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-03-18 17:16:36,598 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 211 [2022-03-18 17:16:36,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 17:16:36,598 INFO L478 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-03-18 17:16:36,598 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 2.3962264150943398) internal successors, (127), 52 states have internal predecessors, (127), 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) [2022-03-18 17:16:36,598 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-03-18 17:16:36,598 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-03-18 17:16:36,601 INFO L788 garLoopResultBuilder]: Registering result SAFE for location mainErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-03-18 17:16:36,601 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-03-18 17:16:36,605 INFO L718 BasicCegarLoop]: Path program histogram: [8, 1, 1, 1] [2022-03-18 17:16:36,606 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-18 17:16:36,608 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.03 05:16:36 BasicIcfg [2022-03-18 17:16:36,608 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-18 17:16:36,609 INFO L158 Benchmark]: Toolchain (without parser) took 32945.34ms. Allocated memory was 225.4MB in the beginning and 412.1MB in the end (delta: 186.6MB). Free memory was 168.1MB in the beginning and 196.0MB in the end (delta: -27.9MB). Peak memory consumption was 158.5MB. Max. memory is 8.0GB. [2022-03-18 17:16:36,609 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 225.4MB. Free memory is still 184.3MB. There was no memory consumed. Max. memory is 8.0GB. [2022-03-18 17:16:36,609 INFO L158 Benchmark]: CACSL2BoogieTranslator took 253.61ms. Allocated memory was 225.4MB in the beginning and 285.2MB in the end (delta: 59.8MB). Free memory was 167.9MB in the beginning and 253.4MB in the end (delta: -85.5MB). Peak memory consumption was 8.3MB. Max. memory is 8.0GB. [2022-03-18 17:16:36,609 INFO L158 Benchmark]: Boogie Preprocessor took 35.15ms. Allocated memory is still 285.2MB. Free memory was 253.4MB in the beginning and 251.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-03-18 17:16:36,609 INFO L158 Benchmark]: RCFGBuilder took 228.57ms. Allocated memory is still 285.2MB. Free memory was 251.8MB in the beginning and 239.2MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2022-03-18 17:16:36,610 INFO L158 Benchmark]: IcfgTransformer took 19.05ms. Allocated memory is still 285.2MB. Free memory was 239.2MB in the beginning and 237.7MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-18 17:16:36,611 INFO L158 Benchmark]: TraceAbstraction took 32403.77ms. Allocated memory was 285.2MB in the beginning and 412.1MB in the end (delta: 126.9MB). Free memory was 237.1MB in the beginning and 196.0MB in the end (delta: 41.2MB). Peak memory consumption was 168.0MB. Max. memory is 8.0GB. [2022-03-18 17:16:36,612 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 225.4MB. Free memory is still 184.3MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 253.61ms. Allocated memory was 225.4MB in the beginning and 285.2MB in the end (delta: 59.8MB). Free memory was 167.9MB in the beginning and 253.4MB in the end (delta: -85.5MB). Peak memory consumption was 8.3MB. Max. memory is 8.0GB. * Boogie Preprocessor took 35.15ms. Allocated memory is still 285.2MB. Free memory was 253.4MB in the beginning and 251.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 228.57ms. Allocated memory is still 285.2MB. Free memory was 251.8MB in the beginning and 239.2MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * IcfgTransformer took 19.05ms. Allocated memory is still 285.2MB. Free memory was 239.2MB in the beginning and 237.7MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * TraceAbstraction took 32403.77ms. Allocated memory was 285.2MB in the beginning and 412.1MB in the end (delta: 126.9MB). Free memory was 237.1MB in the beginning and 196.0MB in the end (delta: 41.2MB). Peak memory consumption was 168.0MB. 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: 96]: 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, 33 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 32.4s, OverallIterations: 11, TraceHistogramMax: 92, PathProgramHistogramMax: 8, EmptinessCheckTime: 0.0s, AutomataDifference: 16.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1349 SdHoareTripleChecker+Valid, 4.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1349 mSDsluCounter, 706 SdHoareTripleChecker+Invalid, 3.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 459 mSDsCounter, 2084 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 10837 IncrementalHoareTripleChecker+Invalid, 12921 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2084 mSolverCounterUnsat, 247 mSDtfsCounter, 10837 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2728 GetRequests, 1730 SyntacticMatches, 9 SemanticMatches, 989 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17151 ImplicationChecksByTransitivity, 20.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=212occurred in iteration=10, InterpolantAutomatonStates: 520, 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, 11 MinimizatonAttempts, 2666 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 13.7s InterpolantComputationTime, 1948 NumberOfCodeBlocks, 1876 NumberOfCodeBlocksAsserted, 154 NumberOfCheckSat, 2750 ConstructedInterpolants, 0 QuantifiedInterpolants, 9123 SizeOfPredicates, 2 NumberOfNonLiveVariables, 2053 ConjunctsInSsa, 268 ConjunctsInUnsatCore, 25 InterpolantComputations, 4 PerfectInterpolantSequences, 31437/72314 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! [2022-03-18 17:16:36,645 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...