/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/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1250.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-d966a43 [2022-01-31 23:00:32,849 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-31 23:00:32,850 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-31 23:00:32,916 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-31 23:00:32,934 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-31 23:00:32,935 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-31 23:00:32,946 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-31 23:00:32,949 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-31 23:00:32,950 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-31 23:00:32,956 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-31 23:00:32,960 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-31 23:00:32,962 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-31 23:00:32,963 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-31 23:00:32,967 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-31 23:00:32,968 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-31 23:00:32,969 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-31 23:00:32,971 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-31 23:00:32,984 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-31 23:00:32,985 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-31 23:00:32,986 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-31 23:00:32,987 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf [2022-01-31 23:00:32,999 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-31 23:00:32,999 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-31 23:00:33,001 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-31 23:00:33,001 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-31 23:00:33,001 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-31 23:00:33,001 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-31 23:00:33,001 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-31 23:00:33,001 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-31 23:00:33,001 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-31 23:00:33,002 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-31 23:00:33,002 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-31 23:00:33,002 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-31 23:00:33,003 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-31 23:00:33,003 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-31 23:00:33,003 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-31 23:00:33,003 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-31 23:00:33,003 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-31 23:00:33,003 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-31 23:00:33,003 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 23:00:33,004 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-31 23:00:33,004 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2022-01-31 23:00:33,004 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-31 23:00:33,004 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2022-01-31 23:00:33,004 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-31 23:00:33,256 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-31 23:00:33,287 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-31 23:00:33,289 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-31 23:00:33,290 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-31 23:00:33,291 INFO L275 PluginConnector]: CDTParser initialized [2022-01-31 23:00:33,292 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1250.c [2022-01-31 23:00:33,346 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1f430a496/d77b6a07fa2b421cb4f7f3b1d482abeb/FLAG4c014d577 [2022-01-31 23:00:33,758 INFO L306 CDTParser]: Found 1 translation units. [2022-01-31 23:00:33,758 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1250.c [2022-01-31 23:00:33,767 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1f430a496/d77b6a07fa2b421cb4f7f3b1d482abeb/FLAG4c014d577 [2022-01-31 23:00:33,789 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1f430a496/d77b6a07fa2b421cb4f7f3b1d482abeb [2022-01-31 23:00:33,791 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-31 23:00:33,792 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-01-31 23:00:33,793 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-31 23:00:33,793 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-31 23:00:33,796 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-31 23:00:33,797 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 11:00:33" (1/1) ... [2022-01-31 23:00:33,798 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3fd7c742 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:00:33, skipping insertion in model container [2022-01-31 23:00:33,798 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 11:00:33" (1/1) ... [2022-01-31 23:00:33,803 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-31 23:00:33,819 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-31 23:00:33,975 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1250.c[1965,1978] [2022-01-31 23:00:33,977 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 23:00:33,983 INFO L203 MainTranslator]: Completed pre-run [2022-01-31 23:00:34,045 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1250.c[1965,1978] [2022-01-31 23:00:34,050 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 23:00:34,063 INFO L208 MainTranslator]: Completed translation [2022-01-31 23:00:34,064 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:00:34 WrapperNode [2022-01-31 23:00:34,064 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-31 23:00:34,066 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-31 23:00:34,066 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-31 23:00:34,066 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-31 23:00:34,076 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:00:34" (1/1) ... [2022-01-31 23:00:34,077 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:00:34" (1/1) ... [2022-01-31 23:00:34,090 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:00:34" (1/1) ... [2022-01-31 23:00:34,090 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:00:34" (1/1) ... [2022-01-31 23:00:34,104 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:00:34" (1/1) ... [2022-01-31 23:00:34,107 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:00:34" (1/1) ... [2022-01-31 23:00:34,108 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:00:34" (1/1) ... [2022-01-31 23:00:34,109 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-31 23:00:34,110 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-31 23:00:34,110 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-31 23:00:34,110 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-31 23:00:34,112 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:00:34" (1/1) ... [2022-01-31 23:00:34,119 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 23:00:34,134 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 23:00:34,148 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-31 23:00:34,171 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-31 23:00:34,192 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-01-31 23:00:34,193 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-31 23:00:34,193 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-01-31 23:00:34,193 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2022-01-31 23:00:34,193 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_double [2022-01-31 23:00:34,193 INFO L138 BoogieDeclarations]: Found implementation of procedure fmax_double [2022-01-31 23:00:34,194 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-01-31 23:00:34,194 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-01-31 23:00:34,194 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-01-31 23:00:34,194 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-01-31 23:00:34,194 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-31 23:00:34,195 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2022-01-31 23:00:34,195 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2022-01-31 23:00:34,195 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_double [2022-01-31 23:00:34,196 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-31 23:00:34,197 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2022-01-31 23:00:34,197 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-31 23:00:34,198 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-31 23:00:34,198 INFO L130 BoogieDeclarations]: Found specification of procedure fmax_double [2022-01-31 23:00:34,198 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-01-31 23:00:34,198 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-01-31 23:00:34,198 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-31 23:00:34,198 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-31 23:00:34,198 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-31 23:00:34,198 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2022-01-31 23:00:34,280 INFO L234 CfgBuilder]: Building ICFG [2022-01-31 23:00:34,282 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-31 23:00:34,460 INFO L275 CfgBuilder]: Performing block encoding [2022-01-31 23:00:34,473 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-31 23:00:34,474 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-01-31 23:00:34,475 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 11:00:34 BoogieIcfgContainer [2022-01-31 23:00:34,475 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-31 23:00:34,477 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-31 23:00:34,477 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-31 23:00:34,482 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-31 23:00:34,482 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 11:00:33" (1/3) ... [2022-01-31 23:00:34,483 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b6546e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 11:00:34, skipping insertion in model container [2022-01-31 23:00:34,483 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:00:34" (2/3) ... [2022-01-31 23:00:34,483 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b6546e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 11:00:34, skipping insertion in model container [2022-01-31 23:00:34,483 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 11:00:34" (3/3) ... [2022-01-31 23:00:34,484 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1250.c [2022-01-31 23:00:34,489 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-01-31 23:00:34,489 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-31 23:00:34,538 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-31 23:00:34,551 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=AcceleratedInterpolation, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=JORDAN [2022-01-31 23:00:34,551 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-31 23:00:34,569 INFO L276 IsEmpty]: Start isEmpty. Operand has 40 states, 27 states have (on average 1.4074074074074074) internal successors, (38), 28 states have internal predecessors, (38), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-01-31 23:00:34,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-01-31 23:00:34,577 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:00:34,577 INFO L514 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] [2022-01-31 23:00:34,578 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:00:34,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:00:34,583 INFO L85 PathProgramCache]: Analyzing trace with hash 175497070, now seen corresponding path program 1 times [2022-01-31 23:00:34,591 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:00:34,591 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1377934873] [2022-01-31 23:00:34,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:00:34,604 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:00:34,650 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:00:34,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:00:34,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 23:00:34,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:00:34,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 23:00:34,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:00:34,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-31 23:00:34,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:00:34,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-01-31 23:00:34,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:00:34,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 23:00:34,890 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 23:00:34,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1377934873] [2022-01-31 23:00:34,892 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1377934873] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 23:00:34,892 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 23:00:34,892 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-31 23:00:34,893 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005131421] [2022-01-31 23:00:34,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 23:00:34,897 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-31 23:00:34,898 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 23:00:34,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-31 23:00:34,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-31 23:00:34,927 INFO L87 Difference]: Start difference. First operand has 40 states, 27 states have (on average 1.4074074074074074) internal successors, (38), 28 states have internal predecessors, (38), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 2 states have internal predecessors, (17), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 23:00:35,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 23:00:35,087 INFO L93 Difference]: Finished difference Result 71 states and 92 transitions. [2022-01-31 23:00:35,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-31 23:00:35,090 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 2 states have internal predecessors, (17), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 26 [2022-01-31 23:00:35,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 23:00:35,096 INFO L225 Difference]: With dead ends: 71 [2022-01-31 23:00:35,097 INFO L226 Difference]: Without dead ends: 36 [2022-01-31 23:00:35,100 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-31 23:00:35,103 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 37 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 23:00:35,104 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [39 Valid, 43 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 23:00:35,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-01-31 23:00:35,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2022-01-31 23:00:35,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 25 states have (on average 1.28) internal successors, (32), 25 states have internal predecessors, (32), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-01-31 23:00:35,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 43 transitions. [2022-01-31 23:00:35,160 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 43 transitions. Word has length 26 [2022-01-31 23:00:35,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 23:00:35,161 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 43 transitions. [2022-01-31 23:00:35,161 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 2 states have internal predecessors, (17), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 23:00:35,161 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 43 transitions. [2022-01-31 23:00:35,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-01-31 23:00:35,165 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:00:35,166 INFO L514 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] [2022-01-31 23:00:35,166 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-31 23:00:35,167 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:00:35,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:00:35,167 INFO L85 PathProgramCache]: Analyzing trace with hash 1646180679, now seen corresponding path program 1 times [2022-01-31 23:00:35,168 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:00:35,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1890006787] [2022-01-31 23:00:35,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:00:35,170 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:00:35,177 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:00:35,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:00:35,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 23:00:35,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:00:35,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 23:00:35,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:00:35,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-31 23:00:35,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:00:35,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-01-31 23:00:35,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:00:35,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 23:00:35,330 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 23:00:35,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1890006787] [2022-01-31 23:00:35,330 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1890006787] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 23:00:35,330 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 23:00:35,330 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-31 23:00:35,330 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571862254] [2022-01-31 23:00:35,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 23:00:35,331 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-31 23:00:35,331 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 23:00:35,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-31 23:00:35,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-31 23:00:35,332 INFO L87 Difference]: Start difference. First operand 36 states and 43 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 23:00:35,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 23:00:35,487 INFO L93 Difference]: Finished difference Result 51 states and 59 transitions. [2022-01-31 23:00:35,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-31 23:00:35,487 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 27 [2022-01-31 23:00:35,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 23:00:35,491 INFO L225 Difference]: With dead ends: 51 [2022-01-31 23:00:35,492 INFO L226 Difference]: Without dead ends: 40 [2022-01-31 23:00:35,497 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-01-31 23:00:35,501 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 37 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 23:00:35,502 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 39 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 23:00:35,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2022-01-31 23:00:35,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2022-01-31 23:00:35,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 28 states have (on average 1.25) internal successors, (35), 28 states have internal predecessors, (35), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (7), 6 states have call predecessors, (7), 5 states have call successors, (7) [2022-01-31 23:00:35,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2022-01-31 23:00:35,514 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 27 [2022-01-31 23:00:35,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 23:00:35,515 INFO L470 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2022-01-31 23:00:35,515 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 23:00:35,516 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2022-01-31 23:00:35,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-31 23:00:35,518 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:00:35,518 INFO L514 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, 1] [2022-01-31 23:00:35,518 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-31 23:00:35,518 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:00:35,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:00:35,519 INFO L85 PathProgramCache]: Analyzing trace with hash -1962849067, now seen corresponding path program 1 times [2022-01-31 23:00:35,519 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:00:35,519 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [374478159] [2022-01-31 23:00:35,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:00:35,521 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:00:35,523 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:00:35,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:00:35,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 23:00:35,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:00:35,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 23:00:35,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:00:35,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-31 23:00:35,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:00:35,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-01-31 23:00:35,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:00:35,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 23:00:35,658 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 23:00:35,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [374478159] [2022-01-31 23:00:35,658 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [374478159] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 23:00:35,658 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 23:00:35,658 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-31 23:00:35,658 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570158860] [2022-01-31 23:00:35,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 23:00:35,659 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-31 23:00:35,659 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 23:00:35,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-31 23:00:35,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-31 23:00:35,660 INFO L87 Difference]: Start difference. First operand 40 states and 48 transitions. Second operand has 6 states, 6 states have (on average 3.5) internal successors, (21), 4 states have internal predecessors, (21), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 23:00:35,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 23:00:35,788 INFO L93 Difference]: Finished difference Result 55 states and 64 transitions. [2022-01-31 23:00:35,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-31 23:00:35,788 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 4 states have internal predecessors, (21), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 30 [2022-01-31 23:00:35,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 23:00:35,790 INFO L225 Difference]: With dead ends: 55 [2022-01-31 23:00:35,790 INFO L226 Difference]: Without dead ends: 44 [2022-01-31 23:00:35,790 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-01-31 23:00:35,791 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 37 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 23:00:35,792 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 39 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 23:00:35,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2022-01-31 23:00:35,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 40. [2022-01-31 23:00:35,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 28 states have (on average 1.25) internal successors, (35), 28 states have internal predecessors, (35), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (7), 6 states have call predecessors, (7), 5 states have call successors, (7) [2022-01-31 23:00:35,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2022-01-31 23:00:35,801 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 30 [2022-01-31 23:00:35,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 23:00:35,801 INFO L470 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2022-01-31 23:00:35,801 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 4 states have internal predecessors, (21), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 23:00:35,802 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2022-01-31 23:00:35,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-31 23:00:35,803 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:00:35,803 INFO L514 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, 1] [2022-01-31 23:00:35,803 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-31 23:00:35,803 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:00:35,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:00:35,804 INFO L85 PathProgramCache]: Analyzing trace with hash -455297258, now seen corresponding path program 1 times [2022-01-31 23:00:35,804 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:00:35,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1542205373] [2022-01-31 23:00:35,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:00:35,805 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:00:35,806 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:00:35,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-31 23:00:35,826 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-01-31 23:00:35,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-31 23:00:35,857 INFO L133 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2022-01-31 23:00:35,857 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-01-31 23:00:35,859 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-01-31 23:00:35,861 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-31 23:00:35,864 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-01-31 23:00:35,867 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-01-31 23:00:35,880 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.01 11:00:35 BoogieIcfgContainer [2022-01-31 23:00:35,880 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-31 23:00:35,881 INFO L158 Benchmark]: Toolchain (without parser) took 2088.76ms. Allocated memory was 184.5MB in the beginning and 231.7MB in the end (delta: 47.2MB). Free memory was 129.5MB in the beginning and 107.4MB in the end (delta: 22.0MB). Peak memory consumption was 68.7MB. Max. memory is 8.0GB. [2022-01-31 23:00:35,881 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 184.5MB. Free memory is still 145.7MB. There was no memory consumed. Max. memory is 8.0GB. [2022-01-31 23:00:35,882 INFO L158 Benchmark]: CACSL2BoogieTranslator took 271.23ms. Allocated memory was 184.5MB in the beginning and 231.7MB in the end (delta: 47.2MB). Free memory was 129.2MB in the beginning and 204.4MB in the end (delta: -75.2MB). Peak memory consumption was 13.4MB. Max. memory is 8.0GB. [2022-01-31 23:00:35,882 INFO L158 Benchmark]: Boogie Preprocessor took 43.89ms. Allocated memory is still 231.7MB. Free memory was 204.4MB in the beginning and 202.9MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-01-31 23:00:35,883 INFO L158 Benchmark]: RCFGBuilder took 365.43ms. Allocated memory is still 231.7MB. Free memory was 202.9MB in the beginning and 188.7MB in the end (delta: 14.2MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. [2022-01-31 23:00:35,883 INFO L158 Benchmark]: TraceAbstraction took 1403.65ms. Allocated memory is still 231.7MB. Free memory was 188.7MB in the beginning and 107.4MB in the end (delta: 81.3MB). Peak memory consumption was 80.7MB. Max. memory is 8.0GB. [2022-01-31 23:00:35,884 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 184.5MB. Free memory is still 145.7MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 271.23ms. Allocated memory was 184.5MB in the beginning and 231.7MB in the end (delta: 47.2MB). Free memory was 129.2MB in the beginning and 204.4MB in the end (delta: -75.2MB). Peak memory consumption was 13.4MB. Max. memory is 8.0GB. * Boogie Preprocessor took 43.89ms. Allocated memory is still 231.7MB. Free memory was 204.4MB in the beginning and 202.9MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 365.43ms. Allocated memory is still 231.7MB. Free memory was 202.9MB in the beginning and 188.7MB in the end (delta: 14.2MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. * TraceAbstraction took 1403.65ms. Allocated memory is still 231.7MB. Free memory was 188.7MB in the beginning and 107.4MB in the end (delta: 81.3MB). Peak memory consumption was 80.7MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 74]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 18, overapproximation of someBinaryArithmeticDOUBLEoperation at line 69. Possible FailurePath: [L69] double x = 0.0 / 0.0; [L70] double y = 0.0 / 0.0; [L71] CALL, EXPR fmax_double(x, y) [L57] CALL, EXPR __fpclassify_double(x) [L29] __uint32_t msw, lsw; [L32] ieee_double_shape_type ew_u; [L33] ew_u.value = (x) [L34] EXPR ew_u.parts.msw [L34] (msw) = ew_u.parts.msw [L35] EXPR ew_u.parts.lsw [L35] (lsw) = ew_u.parts.lsw [L38-L39] COND FALSE !((msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000)) [L41-L42] COND FALSE !((msw >= 0x00100000 && msw <= 0x7fefffff) || (msw >= 0x80100000 && msw <= 0xffefffff)) [L44-L45] COND FALSE !(( msw <= 0x000fffff) || (msw >= 0x80000000 && msw <= 0x800fffff)) [L48-L49] COND FALSE !((msw == 0x7ff00000 && lsw == 0x00000000) || (msw == 0xfff00000 && lsw == 0x00000000)) [L52] return 0; [L57] RET, EXPR __fpclassify_double(x) [L57] COND TRUE __fpclassify_double(x) == 0 [L58] return y; [L71] RET, EXPR fmax_double(x, y) [L71] double res = fmax_double(x, y); [L73] CALL, EXPR isnan_double(res) [L18] return x != x; [L73] RET, EXPR isnan_double(res) [L73] COND TRUE !isnan_double(res) [L74] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 43 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.3s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 119 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 111 mSDsluCounter, 121 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 10 mSDsCounter, 48 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 282 IncrementalHoareTripleChecker+Invalid, 330 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 48 mSolverCounterUnsat, 111 mSDtfsCounter, 282 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 48 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=40occurred in iteration=0, InterpolantAutomatonStates: 19, 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, 3 MinimizatonAttempts, 4 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, 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 RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-01-31 23:00:35,915 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...