/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/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/combinations/gcd_1+newton_2_8.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 07:53:39,639 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 07:53:39,640 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 07:53:39,677 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-10 07:53:39,741 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 07:53:39,741 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 07:53:39,742 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 07:53:39,743 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-01-10 07:53:39,778 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 07:53:39,778 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 07:53:39,779 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 07:53:39,779 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 07:53:39,780 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 07:53:39,780 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 07:53:39,780 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 07:53:39,780 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 07:53:39,780 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 07:53:39,781 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 07:53:39,781 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 07:53:39,781 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 07:53:39,782 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 07:53:39,782 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 07:53:39,782 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 07:53:39,782 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 07:53:39,782 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 07:53:39,782 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 07:53:39,782 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 07:53:39,782 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 07:53:39,782 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 07:53:39,783 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 07:53:39,783 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 07:53:39,783 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 07:53:39,784 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 07:53:39,784 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 07:53:39,784 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 07:53:39,784 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-01-10 07:53:39,784 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-01-10 07:53:39,785 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 07:53:39,785 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 07:53:39,785 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 07:53:39,785 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 07:53:39,785 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 07:53:40,042 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 07:53:40,071 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 07:53:40,073 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 07:53:40,074 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 07:53:40,074 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 07:53:40,075 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/gcd_1+newton_2_8.i [2022-01-10 07:53:40,136 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ef5ffdb1c/1926e41367554d6690bb357adbe4de78/FLAGf08b608d6 [2022-01-10 07:53:40,570 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 07:53:40,570 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/gcd_1+newton_2_8.i [2022-01-10 07:53:40,581 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ef5ffdb1c/1926e41367554d6690bb357adbe4de78/FLAGf08b608d6 [2022-01-10 07:53:40,597 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ef5ffdb1c/1926e41367554d6690bb357adbe4de78 [2022-01-10 07:53:40,599 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 07:53:40,601 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 07:53:40,604 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 07:53:40,604 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 07:53:40,608 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 07:53:40,608 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 07:53:40" (1/1) ... [2022-01-10 07:53:40,612 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f496372 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:53:40, skipping insertion in model container [2022-01-10 07:53:40,612 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 07:53:40" (1/1) ... [2022-01-10 07:53:40,618 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 07:53:40,638 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 07:53:40,793 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/gcd_1+newton_2_8.i[1226,1239] [2022-01-10 07:53:40,813 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/gcd_1+newton_2_8.i[2807,2820] [2022-01-10 07:53:40,814 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 07:53:40,822 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 07:53:40,832 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/gcd_1+newton_2_8.i[1226,1239] [2022-01-10 07:53:40,840 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/gcd_1+newton_2_8.i[2807,2820] [2022-01-10 07:53:40,840 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 07:53:40,852 INFO L208 MainTranslator]: Completed translation [2022-01-10 07:53:40,852 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:53:40 WrapperNode [2022-01-10 07:53:40,852 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 07:53:40,853 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 07:53:40,853 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 07:53:40,853 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 07:53:40,859 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:53:40" (1/1) ... [2022-01-10 07:53:40,866 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:53:40" (1/1) ... [2022-01-10 07:53:40,882 INFO L137 Inliner]: procedures = 28, calls = 16, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 72 [2022-01-10 07:53:40,882 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 07:53:40,883 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 07:53:40,883 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 07:53:40,883 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 07:53:40,889 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:53:40" (1/1) ... [2022-01-10 07:53:40,890 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:53:40" (1/1) ... [2022-01-10 07:53:40,892 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:53:40" (1/1) ... [2022-01-10 07:53:40,893 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:53:40" (1/1) ... [2022-01-10 07:53:40,898 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:53:40" (1/1) ... [2022-01-10 07:53:40,902 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:53:40" (1/1) ... [2022-01-10 07:53:40,903 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:53:40" (1/1) ... [2022-01-10 07:53:40,905 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 07:53:40,906 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 07:53:40,906 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 07:53:40,906 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 07:53:40,907 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:53:40" (1/1) ... [2022-01-10 07:53:40,921 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 07:53:40,931 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 07:53:40,944 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) [2022-01-10 07:53:40,970 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 [2022-01-10 07:53:40,989 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 07:53:40,990 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 07:53:40,990 INFO L130 BoogieDeclarations]: Found specification of procedure fp [2022-01-10 07:53:40,990 INFO L138 BoogieDeclarations]: Found implementation of procedure fp [2022-01-10 07:53:40,990 INFO L130 BoogieDeclarations]: Found specification of procedure f [2022-01-10 07:53:40,991 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2022-01-10 07:53:40,991 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 07:53:40,991 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 07:53:41,091 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 07:53:41,093 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 07:53:41,308 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 07:53:41,313 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 07:53:41,313 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 07:53:41,314 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 07:53:41 BoogieIcfgContainer [2022-01-10 07:53:41,314 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 07:53:41,320 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 07:53:41,320 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 07:53:41,323 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 07:53:41,324 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 07:53:40" (1/3) ... [2022-01-10 07:53:41,324 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3dc9b988 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 07:53:41, skipping insertion in model container [2022-01-10 07:53:41,324 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:53:40" (2/3) ... [2022-01-10 07:53:41,325 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3dc9b988 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 07:53:41, skipping insertion in model container [2022-01-10 07:53:41,325 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 07:53:41" (3/3) ... [2022-01-10 07:53:41,326 INFO L111 eAbstractionObserver]: Analyzing ICFG gcd_1+newton_2_8.i [2022-01-10 07:53:41,330 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 07:53:41,331 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-01-10 07:53:41,381 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 07:53:41,392 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-10 07:53:41,392 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-01-10 07:53:41,417 INFO L276 IsEmpty]: Start isEmpty. Operand has 37 states, 28 states have (on average 1.3928571428571428) internal successors, (39), 30 states have internal predecessors, (39), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-10 07:53:41,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-01-10 07:53:41,421 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:53:41,421 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:53:41,422 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:53:41,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:53:41,427 INFO L85 PathProgramCache]: Analyzing trace with hash -247750664, now seen corresponding path program 1 times [2022-01-10 07:53:41,437 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:53:41,438 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1126023173] [2022-01-10 07:53:41,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:53:41,438 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:53:41,439 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:53:41,441 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:53:41,474 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-01-10 07:53:41,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:53:41,540 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 1 conjunts are in the unsatisfiable core [2022-01-10 07:53:41,543 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:53:41,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:53:41,591 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:53:41,591 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:53:41,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1126023173] [2022-01-10 07:53:41,592 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1126023173] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:53:41,592 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:53:41,592 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 07:53:41,594 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313896231] [2022-01-10 07:53:41,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:53:41,598 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 07:53:41,599 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:53:41,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 07:53:41,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 07:53:41,629 INFO L87 Difference]: Start difference. First operand has 37 states, 28 states have (on average 1.3928571428571428) internal successors, (39), 30 states have internal predecessors, (39), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:53:41,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:53:41,652 INFO L93 Difference]: Finished difference Result 66 states and 79 transitions. [2022-01-10 07:53:41,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 07:53:41,654 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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) Word has length 11 [2022-01-10 07:53:41,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:53:41,660 INFO L225 Difference]: With dead ends: 66 [2022-01-10 07:53:41,660 INFO L226 Difference]: Without dead ends: 29 [2022-01-10 07:53:41,664 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 07:53:41,670 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:53:41,671 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:53:41,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-01-10 07:53:41,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2022-01-10 07:53:41,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 21 states have (on average 1.1904761904761905) internal successors, (25), 22 states have internal predecessors, (25), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-10 07:53:41,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2022-01-10 07:53:41,707 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 11 [2022-01-10 07:53:41,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:53:41,708 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2022-01-10 07:53:41,708 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:53:41,708 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2022-01-10 07:53:41,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-01-10 07:53:41,709 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:53:41,710 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:53:41,726 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-01-10 07:53:41,926 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:53:41,927 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:53:41,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:53:41,927 INFO L85 PathProgramCache]: Analyzing trace with hash -251444748, now seen corresponding path program 1 times [2022-01-10 07:53:41,928 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:53:41,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1581307015] [2022-01-10 07:53:41,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:53:41,928 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:53:41,928 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:53:41,929 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:53:41,931 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-01-10 07:53:41,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:53:41,977 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:53:41,978 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:53:42,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:53:42,039 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:53:42,039 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:53:42,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1581307015] [2022-01-10 07:53:42,039 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1581307015] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:53:42,039 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:53:42,040 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:53:42,040 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428431275] [2022-01-10 07:53:42,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:53:42,041 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:53:42,041 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:53:42,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:53:42,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:53:42,042 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:53:42,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:53:42,081 INFO L93 Difference]: Finished difference Result 36 states and 41 transitions. [2022-01-10 07:53:42,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:53:42,082 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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) Word has length 11 [2022-01-10 07:53:42,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:53:42,083 INFO L225 Difference]: With dead ends: 36 [2022-01-10 07:53:42,083 INFO L226 Difference]: Without dead ends: 30 [2022-01-10 07:53:42,083 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:53:42,084 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 2 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:53:42,086 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 56 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:53:42,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-01-10 07:53:42,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2022-01-10 07:53:42,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 23 states have internal predecessors, (25), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-10 07:53:42,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2022-01-10 07:53:42,092 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 11 [2022-01-10 07:53:42,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:53:42,093 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2022-01-10 07:53:42,093 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:53:42,093 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2022-01-10 07:53:42,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-01-10 07:53:42,093 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:53:42,094 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:53:42,106 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-01-10 07:53:42,294 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:53:42,295 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:53:42,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:53:42,295 INFO L85 PathProgramCache]: Analyzing trace with hash -1673157840, now seen corresponding path program 1 times [2022-01-10 07:53:42,296 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:53:42,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [737952177] [2022-01-10 07:53:42,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:53:42,296 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:53:42,296 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:53:42,297 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:53:42,299 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-01-10 07:53:42,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:53:42,361 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-10 07:53:42,363 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:53:42,437 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:53:42,438 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 07:53:42,482 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:53:42,482 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:53:42,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [737952177] [2022-01-10 07:53:42,482 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [737952177] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 07:53:42,483 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 07:53:42,483 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2022-01-10 07:53:42,483 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935651544] [2022-01-10 07:53:42,483 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 07:53:42,483 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 07:53:42,484 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:53:42,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 07:53:42,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-10 07:53:42,484 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:53:42,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:53:42,609 INFO L93 Difference]: Finished difference Result 36 states and 39 transitions. [2022-01-10 07:53:42,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:53:42,610 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 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) Word has length 12 [2022-01-10 07:53:42,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:53:42,611 INFO L225 Difference]: With dead ends: 36 [2022-01-10 07:53:42,611 INFO L226 Difference]: Without dead ends: 31 [2022-01-10 07:53:42,611 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-01-10 07:53:42,612 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 4 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:53:42,613 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 128 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 07:53:42,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-01-10 07:53:42,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2022-01-10 07:53:42,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 23 states have (on average 1.1304347826086956) internal successors, (26), 24 states have internal predecessors, (26), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-10 07:53:42,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2022-01-10 07:53:42,617 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 12 [2022-01-10 07:53:42,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:53:42,618 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2022-01-10 07:53:42,618 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:53:42,618 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2022-01-10 07:53:42,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-01-10 07:53:42,618 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:53:42,619 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:53:42,631 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-01-10 07:53:42,827 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:53:42,828 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:53:42,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:53:42,828 INFO L85 PathProgramCache]: Analyzing trace with hash -276630798, now seen corresponding path program 2 times [2022-01-10 07:53:42,829 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:53:42,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1735696052] [2022-01-10 07:53:42,829 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-10 07:53:42,829 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:53:42,829 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:53:42,830 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:53:42,831 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-01-10 07:53:43,707 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-10 07:53:43,707 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-10 07:53:43,715 WARN L261 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 21 conjunts are in the unsatisfiable core [2022-01-10 07:53:43,717 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:53:49,057 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:53:49,058 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 07:53:56,027 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:53:56,028 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:53:56,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1735696052] [2022-01-10 07:53:56,028 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1735696052] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 07:53:56,028 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 07:53:56,028 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9] total 13 [2022-01-10 07:53:56,030 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283468186] [2022-01-10 07:53:56,031 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 07:53:56,031 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-10 07:53:56,031 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:53:56,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-10 07:53:56,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2022-01-10 07:53:56,032 INFO L87 Difference]: Start difference. First operand 31 states and 34 transitions. Second operand has 13 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 13 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:54:24,336 WARN L228 SmtUtils]: Spent 5.34s on a formula simplification. DAG size of input: 45 DAG size of output: 44 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-01-10 07:54:24,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:54:24,937 INFO L93 Difference]: Finished difference Result 45 states and 50 transitions. [2022-01-10 07:54:24,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-10 07:54:24,958 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 13 states have internal predecessors, (22), 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) Word has length 13 [2022-01-10 07:54:24,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:54:24,959 INFO L225 Difference]: With dead ends: 45 [2022-01-10 07:54:24,959 INFO L226 Difference]: Without dead ends: 37 [2022-01-10 07:54:24,960 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 35.7s TimeCoverageRelationStatistics Valid=92, Invalid=213, Unknown=1, NotChecked=0, Total=306 [2022-01-10 07:54:24,960 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 21 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 207 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 16 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:54:24,961 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 207 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 41 Invalid, 0 Unknown, 16 Unchecked, 2.1s Time] [2022-01-10 07:54:24,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2022-01-10 07:54:24,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 35. [2022-01-10 07:54:24,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 27 states have (on average 1.1111111111111112) internal successors, (30), 28 states have internal predecessors, (30), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-10 07:54:24,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 38 transitions. [2022-01-10 07:54:24,965 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 38 transitions. Word has length 13 [2022-01-10 07:54:24,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:54:24,966 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 38 transitions. [2022-01-10 07:54:24,966 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 13 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:54:24,966 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 38 transitions. [2022-01-10 07:54:24,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-01-10 07:54:24,967 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:54:24,967 INFO L514 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:54:24,975 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-01-10 07:54:25,167 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:54:25,168 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:54:25,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:54:25,168 INFO L85 PathProgramCache]: Analyzing trace with hash -326992466, now seen corresponding path program 1 times [2022-01-10 07:54:25,169 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:54:25,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1559097342] [2022-01-10 07:54:25,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:54:25,169 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:54:25,169 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:54:25,172 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:54:25,177 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-01-10 07:54:25,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:54:25,291 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-10 07:54:25,292 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:54:25,916 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-10 07:54:25,916 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 07:54:26,320 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-10 07:54:26,320 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:54:26,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1559097342] [2022-01-10 07:54:26,320 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1559097342] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 07:54:26,320 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 07:54:26,321 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2022-01-10 07:54:26,321 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401086886] [2022-01-10 07:54:26,321 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 07:54:26,321 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:54:26,321 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:54:26,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:54:26,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:54:26,322 INFO L87 Difference]: Start difference. First operand 35 states and 38 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:54:27,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:54:27,384 INFO L93 Difference]: Finished difference Result 37 states and 40 transitions. [2022-01-10 07:54:27,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 07:54:27,384 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 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) Word has length 14 [2022-01-10 07:54:27,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:54:27,385 INFO L225 Difference]: With dead ends: 37 [2022-01-10 07:54:27,385 INFO L226 Difference]: Without dead ends: 20 [2022-01-10 07:54:27,385 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:54:27,386 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 0 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 4 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:54:27,386 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 67 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 4 Unchecked, 1.0s Time] [2022-01-10 07:54:27,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-01-10 07:54:27,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2022-01-10 07:54:27,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 13 states have (on average 1.0) internal successors, (13), 13 states have internal predecessors, (13), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-10 07:54:27,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2022-01-10 07:54:27,389 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 14 [2022-01-10 07:54:27,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:54:27,389 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2022-01-10 07:54:27,389 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:54:27,390 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2022-01-10 07:54:27,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-10 07:54:27,390 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:54:27,390 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:54:27,405 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-01-10 07:54:27,591 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:54:27,591 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:54:27,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:54:27,592 INFO L85 PathProgramCache]: Analyzing trace with hash 1535073882, now seen corresponding path program 1 times [2022-01-10 07:54:27,592 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:54:27,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [576221899] [2022-01-10 07:54:27,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:54:27,592 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:54:27,593 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:54:27,593 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:54:27,594 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-01-10 07:54:27,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-10 07:54:27,621 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-01-10 07:54:27,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-10 07:54:27,645 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2022-01-10 07:54:27,645 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-01-10 07:54:27,646 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2022-01-10 07:54:27,648 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2022-01-10 07:54:27,662 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-01-10 07:54:27,862 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:54:27,865 INFO L732 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1] [2022-01-10 07:54:27,867 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2022-01-10 07:54:27,886 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 07:54:27 BoogieIcfgContainer [2022-01-10 07:54:27,886 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-10 07:54:27,887 INFO L158 Benchmark]: Toolchain (without parser) took 47285.43ms. Allocated memory was 189.8MB in the beginning and 268.4MB in the end (delta: 78.6MB). Free memory was 136.7MB in the beginning and 208.1MB in the end (delta: -71.5MB). Peak memory consumption was 8.7MB. Max. memory is 8.0GB. [2022-01-10 07:54:27,887 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 189.8MB. Free memory was 153.0MB in the beginning and 152.9MB in the end (delta: 81.6kB). There was no memory consumed. Max. memory is 8.0GB. [2022-01-10 07:54:27,887 INFO L158 Benchmark]: CACSL2BoogieTranslator took 248.31ms. Allocated memory is still 189.8MB. Free memory was 136.4MB in the beginning and 161.1MB in the end (delta: -24.7MB). Peak memory consumption was 11.2MB. Max. memory is 8.0GB. [2022-01-10 07:54:27,887 INFO L158 Benchmark]: Boogie Procedure Inliner took 28.87ms. Allocated memory is still 189.8MB. Free memory was 161.1MB in the beginning and 159.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-01-10 07:54:27,888 INFO L158 Benchmark]: Boogie Preprocessor took 22.91ms. Allocated memory is still 189.8MB. Free memory was 159.5MB in the beginning and 158.0MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-01-10 07:54:27,888 INFO L158 Benchmark]: RCFGBuilder took 408.38ms. Allocated memory is still 189.8MB. Free memory was 158.0MB in the beginning and 146.4MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-01-10 07:54:27,888 INFO L158 Benchmark]: TraceAbstraction took 46566.19ms. Allocated memory was 189.8MB in the beginning and 268.4MB in the end (delta: 78.6MB). Free memory was 146.4MB in the beginning and 208.1MB in the end (delta: -61.7MB). Peak memory consumption was 18.5MB. Max. memory is 8.0GB. [2022-01-10 07:54:27,891 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 189.8MB. Free memory was 153.0MB in the beginning and 152.9MB in the end (delta: 81.6kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 248.31ms. Allocated memory is still 189.8MB. Free memory was 136.4MB in the beginning and 161.1MB in the end (delta: -24.7MB). Peak memory consumption was 11.2MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 28.87ms. Allocated memory is still 189.8MB. Free memory was 161.1MB in the beginning and 159.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 22.91ms. Allocated memory is still 189.8MB. Free memory was 159.5MB in the beginning and 158.0MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 408.38ms. Allocated memory is still 189.8MB. Free memory was 158.0MB in the beginning and 146.4MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * TraceAbstraction took 46566.19ms. Allocated memory was 189.8MB in the beginning and 268.4MB in the end (delta: 78.6MB). Free memory was 146.4MB in the beginning and 208.1MB in the end (delta: -61.7MB). Peak memory consumption was 18.5MB. 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: 102]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of fp.gt at line 91, overapproximation of fp.add at line 85, overapproximation of fp.sub at line 95, overapproximation of fp.lt at line 101. Possible FailurePath: [L108] COND FALSE !(__VERIFIER_nondet_int()) [L111] CALL main2() [L90] float IN = __VERIFIER_nondet_float(); [L91] CALL assume_abort_if_not(IN > -2.0f && IN < 2.0f) [L75] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L91] RET assume_abort_if_not(IN > -2.0f && IN < 2.0f) [L93] CALL, EXPR f(IN) [L80] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; [L93] RET, EXPR f(IN) [L93] CALL, EXPR fp(IN) [L85] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; [L93] RET, EXPR fp(IN) [L93] float x = IN - f(IN)/fp(IN); [L95] CALL, EXPR f(x) [L80] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; [L95] RET, EXPR f(x) [L95] CALL, EXPR fp(x) [L85] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; [L95] RET, EXPR fp(x) [L95] x = x - f(x)/fp(x) [L101] COND TRUE !(x < 0.1) [L102] reach_error() - UnprovableResult [Line: 27]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 37 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 46.5s, OverallIterations: 6, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 30.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 27 SdHoareTripleChecker+Valid, 3.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 27 mSDsluCounter, 501 SdHoareTripleChecker+Invalid, 3.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 20 IncrementalHoareTripleChecker+Unchecked, 352 mSDsCounter, 12 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 82 IncrementalHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 12 mSolverCounterUnsat, 149 mSDtfsCounter, 82 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 100 GetRequests, 70 SyntacticMatches, 3 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 36.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37occurred in iteration=0, InterpolantAutomatonStates: 29, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 13.6s InterpolantComputationTime, 86 NumberOfCodeBlocks, 86 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 92 ConstructedInterpolants, 5 QuantifiedInterpolants, 457 SizeOfPredicates, 21 NumberOfNonLiveVariables, 190 ConjunctsInSsa, 42 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 10/20 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 RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-01-10 07:54:27,934 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...