/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCTransformed.xml -s ../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf -i ../../../trunk/examples/svcomp/loop-invgen/NetBSD_loop.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-b030c9e [2022-03-20 03:36:11,158 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-20 03:36:11,163 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-20 03:36:11,186 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-03-20 03:36:11,192 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-20 03:36:11,193 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-20 03:36:11,193 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-20 03:36:11,194 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-20 03:36:11,195 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-20 03:36:11,195 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-20 03:36:11,197 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-20 03:36:11,198 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-20 03:36:11,200 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-03-20 03:36:11,200 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-20 03:36:11,201 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-20 03:36:11,202 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-20 03:36:11,202 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-20 03:36:11,204 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-03-20 03:36:11,209 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-20 03:36:11,210 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-20 03:36:11,210 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-20 03:36:11,211 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2022-03-20 03:36:11,216 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-20 03:36:11,217 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-20 03:36:11,217 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-20 03:36:11,217 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-20 03:36:11,218 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-20 03:36:11,218 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-20 03:36:11,218 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-20 03:36:11,218 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-20 03:36:11,218 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-20 03:36:11,218 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-20 03:36:11,218 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-20 03:36:11,218 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-20 03:36:11,219 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-20 03:36:11,219 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-20 03:36:11,219 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-20 03:36:11,219 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-20 03:36:11,219 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-20 03:36:11,219 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-20 03:36:11,219 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-20 03:36:11,219 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-20 03:36:11,220 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-20 03:36:11,220 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-03-20 03:36:11,220 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-03-20 03:36:11,386 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-20 03:36:11,407 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-20 03:36:11,409 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-20 03:36:11,410 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-20 03:36:11,410 INFO L275 PluginConnector]: CDTParser initialized [2022-03-20 03:36:11,411 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/NetBSD_loop.i [2022-03-20 03:36:11,457 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9a68808ec/a346a5f28ec44cfb988e09360e721abe/FLAG969daec01 [2022-03-20 03:36:11,844 INFO L306 CDTParser]: Found 1 translation units. [2022-03-20 03:36:11,844 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/NetBSD_loop.i [2022-03-20 03:36:11,848 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9a68808ec/a346a5f28ec44cfb988e09360e721abe/FLAG969daec01 [2022-03-20 03:36:11,858 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9a68808ec/a346a5f28ec44cfb988e09360e721abe [2022-03-20 03:36:11,860 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-20 03:36:11,862 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-03-20 03:36:11,863 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-20 03:36:11,863 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-20 03:36:11,866 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-20 03:36:11,867 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.03 03:36:11" (1/1) ... [2022-03-20 03:36:11,868 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@489bfec5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 03:36:11, skipping insertion in model container [2022-03-20 03:36:11,868 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.03 03:36:11" (1/1) ... [2022-03-20 03:36:11,873 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-20 03:36:11,883 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-20 03:36:12,026 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/NetBSD_loop.i[893,906] [2022-03-20 03:36:12,046 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-20 03:36:12,052 INFO L203 MainTranslator]: Completed pre-run [2022-03-20 03:36:12,060 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/NetBSD_loop.i[893,906] [2022-03-20 03:36:12,069 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-20 03:36:12,078 INFO L208 MainTranslator]: Completed translation [2022-03-20 03:36:12,079 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 03:36:12 WrapperNode [2022-03-20 03:36:12,079 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-20 03:36:12,080 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-20 03:36:12,080 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-20 03:36:12,080 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-20 03:36:12,087 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 03:36:12" (1/1) ... [2022-03-20 03:36:12,088 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 03:36:12" (1/1) ... [2022-03-20 03:36:12,092 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 03:36:12" (1/1) ... [2022-03-20 03:36:12,092 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 03:36:12" (1/1) ... [2022-03-20 03:36:12,102 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 03:36:12" (1/1) ... [2022-03-20 03:36:12,106 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 03:36:12" (1/1) ... [2022-03-20 03:36:12,109 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 03:36:12" (1/1) ... [2022-03-20 03:36:12,113 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-20 03:36:12,114 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-20 03:36:12,114 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-20 03:36:12,114 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-20 03:36:12,115 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 03:36:12" (1/1) ... [2022-03-20 03:36:12,120 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-20 03:36:12,128 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 03:36:12,140 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) [2022-03-20 03:36:12,156 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 [2022-03-20 03:36:12,186 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-03-20 03:36:12,186 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-20 03:36:12,186 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-03-20 03:36:12,187 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-03-20 03:36:12,187 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-03-20 03:36:12,187 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-03-20 03:36:12,187 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-03-20 03:36:12,187 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-03-20 03:36:12,187 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2022-03-20 03:36:12,187 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2022-03-20 03:36:12,187 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-03-20 03:36:12,188 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-20 03:36:12,188 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-03-20 03:36:12,188 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-03-20 03:36:12,189 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-03-20 03:36:12,189 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-03-20 03:36:12,189 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-03-20 03:36:12,189 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-20 03:36:12,189 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-20 03:36:12,189 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-20 03:36:12,189 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-20 03:36:12,190 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-20 03:36:12,257 INFO L234 CfgBuilder]: Building ICFG [2022-03-20 03:36:12,258 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-20 03:36:12,385 INFO L275 CfgBuilder]: Performing block encoding [2022-03-20 03:36:12,402 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-20 03:36:12,402 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-03-20 03:36:12,404 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.03 03:36:12 BoogieIcfgContainer [2022-03-20 03:36:12,404 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-20 03:36:12,404 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-03-20 03:36:12,404 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-03-20 03:36:12,405 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-03-20 03:36:12,407 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.03 03:36:12" (1/1) ... [2022-03-20 03:36:12,409 INFO L168 ansformationObserver]: Applying ICFG transformation LOOP_ACCELERATION_JORDAN [2022-03-20 03:36:12,418 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 20.03 03:36:12 BasicIcfg [2022-03-20 03:36:12,418 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-03-20 03:36:12,419 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-20 03:36:12,419 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-20 03:36:12,421 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-20 03:36:12,421 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.03 03:36:11" (1/4) ... [2022-03-20 03:36:12,422 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@752bf96e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.03 03:36:12, skipping insertion in model container [2022-03-20 03:36:12,422 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 03:36:12" (2/4) ... [2022-03-20 03:36:12,422 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@752bf96e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.03 03:36:12, skipping insertion in model container [2022-03-20 03:36:12,422 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.03 03:36:12" (3/4) ... [2022-03-20 03:36:12,422 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@752bf96e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.03 03:36:12, skipping insertion in model container [2022-03-20 03:36:12,423 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 20.03 03:36:12" (4/4) ... [2022-03-20 03:36:12,423 INFO L111 eAbstractionObserver]: Analyzing ICFG NetBSD_loop.iJordan [2022-03-20 03:36:12,427 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2022-03-20 03:36:12,427 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-20 03:36:12,473 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-20 03:36:12,480 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 [2022-03-20 03:36:12,481 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-03-20 03:36:12,491 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 15 states have internal predecessors, (19), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-03-20 03:36:12,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-03-20 03:36:12,499 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 03:36:12,499 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 03:36:12,500 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 03:36:12,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 03:36:12,507 INFO L85 PathProgramCache]: Analyzing trace with hash -665154378, now seen corresponding path program 1 times [2022-03-20 03:36:12,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 03:36:12,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816373221] [2022-03-20 03:36:12,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 03:36:12,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 03:36:12,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:36:12,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 03:36:12,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:36:12,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 03:36:12,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 03:36:12,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816373221] [2022-03-20 03:36:12,701 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816373221] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 03:36:12,701 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 03:36:12,702 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-20 03:36:12,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466512659] [2022-03-20 03:36:12,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 03:36:12,706 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-20 03:36:12,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 03:36:12,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-20 03:36:12,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-03-20 03:36:12,726 INFO L87 Difference]: Start difference. First operand has 23 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 15 states have internal predecessors, (19), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 6 states, 6 states have (on average 1.5) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 03:36:12,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 03:36:12,882 INFO L93 Difference]: Finished difference Result 30 states and 31 transitions. [2022-03-20 03:36:12,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-20 03:36:12,884 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2022-03-20 03:36:12,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 03:36:12,888 INFO L225 Difference]: With dead ends: 30 [2022-03-20 03:36:12,888 INFO L226 Difference]: Without dead ends: 22 [2022-03-20 03:36:12,889 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-03-20 03:36:12,891 INFO L913 BasicCegarLoop]: 21 mSDtfsCounter, 25 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-20 03:36:12,892 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 42 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-20 03:36:12,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-03-20 03:36:12,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2022-03-20 03:36:12,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 14 states have (on average 1.0714285714285714) internal successors, (15), 14 states have internal predecessors, (15), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-03-20 03:36:12,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2022-03-20 03:36:12,918 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 13 [2022-03-20 03:36:12,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 03:36:12,918 INFO L478 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2022-03-20 03:36:12,919 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 03:36:12,919 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2022-03-20 03:36:12,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-20 03:36:12,920 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 03:36:12,920 INFO L499 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 03:36:12,920 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-20 03:36:12,920 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 03:36:12,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 03:36:12,922 INFO L85 PathProgramCache]: Analyzing trace with hash -1437979323, now seen corresponding path program 1 times [2022-03-20 03:36:12,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 03:36:12,923 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474219694] [2022-03-20 03:36:12,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 03:36:12,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 03:36:12,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:36:13,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 03:36:13,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:36:13,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-03-20 03:36:13,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:36:13,056 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 03:36:13,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 03:36:13,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474219694] [2022-03-20 03:36:13,057 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [474219694] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 03:36:13,057 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 03:36:13,057 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-20 03:36:13,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414424456] [2022-03-20 03:36:13,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 03:36:13,058 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-20 03:36:13,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 03:36:13,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-20 03:36:13,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-03-20 03:36:13,059 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-03-20 03:36:13,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 03:36:13,198 INFO L93 Difference]: Finished difference Result 30 states and 31 transitions. [2022-03-20 03:36:13,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-20 03:36:13,198 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 18 [2022-03-20 03:36:13,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 03:36:13,200 INFO L225 Difference]: With dead ends: 30 [2022-03-20 03:36:13,200 INFO L226 Difference]: Without dead ends: 30 [2022-03-20 03:36:13,204 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2022-03-20 03:36:13,205 INFO L913 BasicCegarLoop]: 15 mSDtfsCounter, 19 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-20 03:36:13,206 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 37 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-20 03:36:13,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-03-20 03:36:13,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2022-03-20 03:36:13,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 18 states have (on average 1.0555555555555556) internal successors, (19), 19 states have internal predecessors, (19), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2022-03-20 03:36:13,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2022-03-20 03:36:13,219 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 18 [2022-03-20 03:36:13,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 03:36:13,223 INFO L478 AbstractCegarLoop]: Abstraction has 29 states and 30 transitions. [2022-03-20 03:36:13,223 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-03-20 03:36:13,224 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions. [2022-03-20 03:36:13,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-03-20 03:36:13,225 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 03:36:13,225 INFO L499 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 03:36:13,225 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-20 03:36:13,225 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 03:36:13,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 03:36:13,226 INFO L85 PathProgramCache]: Analyzing trace with hash 1407888200, now seen corresponding path program 1 times [2022-03-20 03:36:13,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 03:36:13,226 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302196296] [2022-03-20 03:36:13,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 03:36:13,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 03:36:13,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:36:13,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 03:36:13,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:36:13,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-03-20 03:36:13,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:36:13,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-03-20 03:36:13,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:36:13,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-03-20 03:36:13,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:36:13,295 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-03-20 03:36:13,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 03:36:13,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302196296] [2022-03-20 03:36:13,295 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302196296] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 03:36:13,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1344009257] [2022-03-20 03:36:13,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 03:36:13,296 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 03:36:13,296 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 03:36:13,297 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) [2022-03-20 03:36:13,298 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-03-20 03:36:13,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:36:13,339 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-20 03:36:13,343 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 03:36:13,574 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-03-20 03:36:13,575 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 03:36:13,670 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-03-20 03:36:13,670 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1344009257] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 03:36:13,670 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-20 03:36:13,671 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 12 [2022-03-20 03:36:13,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909017789] [2022-03-20 03:36:13,671 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-20 03:36:13,671 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-20 03:36:13,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 03:36:13,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-20 03:36:13,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-03-20 03:36:13,672 INFO L87 Difference]: Start difference. First operand 29 states and 30 transitions. Second operand has 12 states, 12 states have (on average 1.75) internal successors, (21), 9 states have internal predecessors, (21), 5 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2022-03-20 03:36:13,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 03:36:13,791 INFO L93 Difference]: Finished difference Result 38 states and 40 transitions. [2022-03-20 03:36:13,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-20 03:36:13,792 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.75) internal successors, (21), 9 states have internal predecessors, (21), 5 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) Word has length 30 [2022-03-20 03:36:13,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 03:36:13,794 INFO L225 Difference]: With dead ends: 38 [2022-03-20 03:36:13,794 INFO L226 Difference]: Without dead ends: 38 [2022-03-20 03:36:13,795 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 62 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2022-03-20 03:36:13,797 INFO L913 BasicCegarLoop]: 15 mSDtfsCounter, 26 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-20 03:36:13,799 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 42 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-20 03:36:13,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2022-03-20 03:36:13,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 37. [2022-03-20 03:36:13,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 23 states have (on average 1.0434782608695652) internal successors, (24), 24 states have internal predecessors, (24), 8 states have call successors, (8), 6 states have call predecessors, (8), 5 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2022-03-20 03:36:13,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 39 transitions. [2022-03-20 03:36:13,808 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 39 transitions. Word has length 30 [2022-03-20 03:36:13,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 03:36:13,809 INFO L478 AbstractCegarLoop]: Abstraction has 37 states and 39 transitions. [2022-03-20 03:36:13,810 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.75) internal successors, (21), 9 states have internal predecessors, (21), 5 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2022-03-20 03:36:13,810 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 39 transitions. [2022-03-20 03:36:13,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-03-20 03:36:13,811 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 03:36:13,811 INFO L499 BasicCegarLoop]: trace histogram [6, 5, 5, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 03:36:13,835 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-03-20 03:36:14,027 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 03:36:14,028 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 03:36:14,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 03:36:14,029 INFO L85 PathProgramCache]: Analyzing trace with hash -699974453, now seen corresponding path program 2 times [2022-03-20 03:36:14,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 03:36:14,029 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628501638] [2022-03-20 03:36:14,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 03:36:14,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 03:36:14,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:36:14,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 03:36:14,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:36:14,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-03-20 03:36:14,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:36:14,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-03-20 03:36:14,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:36:14,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-03-20 03:36:14,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:36:14,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-03-20 03:36:14,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:36:14,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-03-20 03:36:14,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:36:14,127 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-03-20 03:36:14,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 03:36:14,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628501638] [2022-03-20 03:36:14,128 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628501638] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 03:36:14,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [735221020] [2022-03-20 03:36:14,128 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-20 03:36:14,128 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 03:36:14,128 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 03:36:14,134 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) [2022-03-20 03:36:14,135 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-03-20 03:36:14,174 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-20 03:36:14,175 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 03:36:14,175 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-20 03:36:14,179 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 03:36:14,264 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-03-20 03:36:14,265 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 03:36:14,340 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-03-20 03:36:14,340 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [735221020] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 03:36:14,341 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-20 03:36:14,341 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 9 [2022-03-20 03:36:14,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806354954] [2022-03-20 03:36:14,341 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-20 03:36:14,341 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-20 03:36:14,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 03:36:14,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-20 03:36:14,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-03-20 03:36:14,342 INFO L87 Difference]: Start difference. First operand 37 states and 39 transitions. Second operand has 9 states, 8 states have (on average 2.125) internal successors, (17), 6 states have internal predecessors, (17), 3 states have call successors, (8), 4 states have call predecessors, (8), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-03-20 03:36:14,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 03:36:14,397 INFO L93 Difference]: Finished difference Result 35 states and 37 transitions. [2022-03-20 03:36:14,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-20 03:36:14,398 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.125) internal successors, (17), 6 states have internal predecessors, (17), 3 states have call successors, (8), 4 states have call predecessors, (8), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 42 [2022-03-20 03:36:14,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 03:36:14,398 INFO L225 Difference]: With dead ends: 35 [2022-03-20 03:36:14,398 INFO L226 Difference]: Without dead ends: 0 [2022-03-20 03:36:14,399 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 93 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2022-03-20 03:36:14,399 INFO L913 BasicCegarLoop]: 14 mSDtfsCounter, 16 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-20 03:36:14,399 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 41 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-20 03:36:14,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-03-20 03:36:14,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-03-20 03:36:14,400 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) [2022-03-20 03:36:14,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-03-20 03:36:14,400 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 42 [2022-03-20 03:36:14,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 03:36:14,400 INFO L478 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-03-20 03:36:14,400 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.125) internal successors, (17), 6 states have internal predecessors, (17), 3 states have call successors, (8), 4 states have call predecessors, (8), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-03-20 03:36:14,400 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-03-20 03:36:14,400 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-03-20 03:36:14,402 INFO L788 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-03-20 03:36:14,419 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-03-20 03:36:14,619 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-03-20 03:36:14,622 INFO L719 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2022-03-20 03:36:14,623 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-20 03:36:14,625 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.03 03:36:14 BasicIcfg [2022-03-20 03:36:14,625 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-20 03:36:14,626 INFO L158 Benchmark]: Toolchain (without parser) took 2763.73ms. Allocated memory is still 189.8MB. Free memory was 139.9MB in the beginning and 87.0MB in the end (delta: 52.9MB). Peak memory consumption was 53.1MB. Max. memory is 8.0GB. [2022-03-20 03:36:14,626 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 189.8MB. Free memory is still 156.9MB. There was no memory consumed. Max. memory is 8.0GB. [2022-03-20 03:36:14,626 INFO L158 Benchmark]: CACSL2BoogieTranslator took 215.86ms. Allocated memory is still 189.8MB. Free memory was 139.7MB in the beginning and 165.9MB in the end (delta: -26.2MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-03-20 03:36:14,628 INFO L158 Benchmark]: Boogie Preprocessor took 33.87ms. Allocated memory is still 189.8MB. Free memory was 165.9MB in the beginning and 164.4MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-20 03:36:14,630 INFO L158 Benchmark]: RCFGBuilder took 289.65ms. Allocated memory is still 189.8MB. Free memory was 164.3MB in the beginning and 154.2MB in the end (delta: 10.1MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-03-20 03:36:14,630 INFO L158 Benchmark]: IcfgTransformer took 13.88ms. Allocated memory is still 189.8MB. Free memory was 154.2MB in the beginning and 153.0MB in the end (delta: 1.2MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-20 03:36:14,630 INFO L158 Benchmark]: TraceAbstraction took 2206.02ms. Allocated memory is still 189.8MB. Free memory was 152.5MB in the beginning and 87.0MB in the end (delta: 65.5MB). Peak memory consumption was 65.8MB. Max. memory is 8.0GB. [2022-03-20 03:36:14,631 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 189.8MB. Free memory is still 156.9MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 215.86ms. Allocated memory is still 189.8MB. Free memory was 139.7MB in the beginning and 165.9MB in the end (delta: -26.2MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 33.87ms. Allocated memory is still 189.8MB. Free memory was 165.9MB in the beginning and 164.4MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 289.65ms. Allocated memory is still 189.8MB. Free memory was 164.3MB in the beginning and 154.2MB in the end (delta: 10.1MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * IcfgTransformer took 13.88ms. Allocated memory is still 189.8MB. Free memory was 154.2MB in the beginning and 153.0MB in the end (delta: 1.2MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * TraceAbstraction took 2206.02ms. Allocated memory is still 189.8MB. Free memory was 152.5MB in the beginning and 87.0MB in the end (delta: 65.5MB). Peak memory consumption was 65.8MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 23 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.2s, OverallIterations: 4, TraceHistogramMax: 6, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 86 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 86 mSDsluCounter, 162 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 97 mSDsCounter, 65 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 296 IncrementalHoareTripleChecker+Invalid, 361 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 65 mSolverCounterUnsat, 65 mSDtfsCounter, 296 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 214 GetRequests, 163 SyntacticMatches, 5 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37occurred in iteration=3, InterpolantAutomatonStates: 32, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 2 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 175 NumberOfCodeBlocks, 175 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 239 ConstructedInterpolants, 0 QuantifiedInterpolants, 479 SizeOfPredicates, 9 NumberOfNonLiveVariables, 203 ConjunctsInSsa, 15 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 224/245 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! [2022-03-20 03:36:14,661 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...