/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/bitvector/soft_float_1-3a.c.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 02:40:07,903 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 02:40:07,905 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 02:40:07,957 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-10 02:40:07,981 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 02:40:08,004 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 02:40:08,004 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 02:40:08,004 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 02:40:08,005 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 02:40:08,005 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 02:40:08,005 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 02:40:08,006 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 02:40:08,006 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 02:40:08,006 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 02:40:08,006 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 02:40:08,007 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 02:40:08,007 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 02:40:08,007 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 02:40:08,007 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 02:40:08,007 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 02:40:08,007 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 02:40:08,007 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 02:40:08,007 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 02:40:08,007 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 02:40:08,008 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 02:40:08,008 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 02:40:08,008 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 02:40:08,008 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 02:40:08,008 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 02:40:08,008 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 02:40:08,008 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 02:40:08,008 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 02:40:08,008 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-01-10 02:40:08,008 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-01-10 02:40:08,009 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 02:40:08,009 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 02:40:08,009 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 02:40:08,009 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 02:40:08,009 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 02:40:08,194 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 02:40:08,224 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 02:40:08,225 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 02:40:08,226 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 02:40:08,226 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 02:40:08,227 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/bitvector/soft_float_1-3a.c.cil.c [2022-01-10 02:40:08,283 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4cee03131/bbc85902b46d4a68be96e28a203767c0/FLAG2c3a4f096 [2022-01-10 02:40:08,669 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 02:40:08,669 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/bitvector/soft_float_1-3a.c.cil.c [2022-01-10 02:40:08,679 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4cee03131/bbc85902b46d4a68be96e28a203767c0/FLAG2c3a4f096 [2022-01-10 02:40:08,689 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4cee03131/bbc85902b46d4a68be96e28a203767c0 [2022-01-10 02:40:08,691 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 02:40:08,694 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 02:40:08,697 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 02:40:08,697 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 02:40:08,699 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 02:40:08,700 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 02:40:08" (1/1) ... [2022-01-10 02:40:08,700 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1778aaeb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:40:08, skipping insertion in model container [2022-01-10 02:40:08,700 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 02:40:08" (1/1) ... [2022-01-10 02:40:08,705 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 02:40:08,737 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 02:40:08,898 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/bitvector/soft_float_1-3a.c.cil.c[730,743] [2022-01-10 02:40:08,945 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 02:40:08,954 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 02:40:08,962 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/bitvector/soft_float_1-3a.c.cil.c[730,743] [2022-01-10 02:40:08,990 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 02:40:09,003 INFO L208 MainTranslator]: Completed translation [2022-01-10 02:40:09,003 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:40:09 WrapperNode [2022-01-10 02:40:09,003 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 02:40:09,004 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 02:40:09,004 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 02:40:09,004 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 02:40:09,008 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:40:09" (1/1) ... [2022-01-10 02:40:09,024 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:40:09" (1/1) ... [2022-01-10 02:40:09,046 INFO L137 Inliner]: procedures = 17, calls = 19, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 145 [2022-01-10 02:40:09,046 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 02:40:09,047 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 02:40:09,047 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 02:40:09,047 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 02:40:09,052 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:40:09" (1/1) ... [2022-01-10 02:40:09,052 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:40:09" (1/1) ... [2022-01-10 02:40:09,064 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:40:09" (1/1) ... [2022-01-10 02:40:09,064 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:40:09" (1/1) ... [2022-01-10 02:40:09,075 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:40:09" (1/1) ... [2022-01-10 02:40:09,078 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:40:09" (1/1) ... [2022-01-10 02:40:09,079 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:40:09" (1/1) ... [2022-01-10 02:40:09,081 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 02:40:09,082 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 02:40:09,082 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 02:40:09,082 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 02:40:09,096 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:40:09" (1/1) ... [2022-01-10 02:40:09,101 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 02:40:09,126 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 02:40:09,161 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 02:40:09,189 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 02:40:09,214 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 02:40:09,214 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 02:40:09,214 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2022-01-10 02:40:09,214 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2022-01-10 02:40:09,214 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 02:40:09,214 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 02:40:09,215 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-01-10 02:40:09,215 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-01-10 02:40:09,313 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 02:40:09,314 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 02:40:09,547 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 02:40:09,555 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 02:40:09,556 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-01-10 02:40:09,557 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 02:40:09 BoogieIcfgContainer [2022-01-10 02:40:09,557 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 02:40:09,558 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 02:40:09,558 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 02:40:09,561 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 02:40:09,562 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 02:40:08" (1/3) ... [2022-01-10 02:40:09,562 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72dbbeb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 02:40:09, skipping insertion in model container [2022-01-10 02:40:09,562 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:40:09" (2/3) ... [2022-01-10 02:40:09,562 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72dbbeb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 02:40:09, skipping insertion in model container [2022-01-10 02:40:09,563 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 02:40:09" (3/3) ... [2022-01-10 02:40:09,563 INFO L111 eAbstractionObserver]: Analyzing ICFG soft_float_1-3a.c.cil.c [2022-01-10 02:40:09,567 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 02:40:09,567 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 02:40:09,604 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 02:40:09,609 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 02:40:09,610 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 02:40:09,621 INFO L276 IsEmpty]: Start isEmpty. Operand has 72 states, 59 states have (on average 1.5932203389830508) internal successors, (94), 62 states have internal predecessors, (94), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-01-10 02:40:09,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-01-10 02:40:09,625 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:40:09,625 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:40:09,626 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:40:09,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:40:09,629 INFO L85 PathProgramCache]: Analyzing trace with hash -1607439287, now seen corresponding path program 1 times [2022-01-10 02:40:09,636 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 02:40:09,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [808241655] [2022-01-10 02:40:09,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:40:09,637 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 02:40:09,637 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 02:40:09,652 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 02:40:09,652 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 02:40:09,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:40:09,746 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-10 02:40:09,750 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 02:40:09,875 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-10 02:40:09,875 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 02:40:09,959 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-10 02:40:09,960 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 02:40:09,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [808241655] [2022-01-10 02:40:09,961 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [808241655] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 02:40:09,961 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 02:40:09,961 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2022-01-10 02:40:09,962 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241036841] [2022-01-10 02:40:09,962 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 02:40:09,965 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 02:40:09,965 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 02:40:09,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 02:40:09,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 02:40:09,982 INFO L87 Difference]: Start difference. First operand has 72 states, 59 states have (on average 1.5932203389830508) internal successors, (94), 62 states have internal predecessors, (94), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Second operand has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 5 states have internal predecessors, (20), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-01-10 02:40:10,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:40:10,048 INFO L93 Difference]: Finished difference Result 194 states and 324 transitions. [2022-01-10 02:40:10,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 02:40:10,050 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 5 states have internal predecessors, (20), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 32 [2022-01-10 02:40:10,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:40:10,057 INFO L225 Difference]: With dead ends: 194 [2022-01-10 02:40:10,057 INFO L226 Difference]: Without dead ends: 117 [2022-01-10 02:40:10,059 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-01-10 02:40:10,061 INFO L933 BasicCegarLoop]: 162 mSDtfsCounter, 61 mSDsluCounter, 581 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 743 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 02:40:10,062 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 743 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 02:40:10,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2022-01-10 02:40:10,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 80. [2022-01-10 02:40:10,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 65 states have (on average 1.4615384615384615) internal successors, (95), 67 states have internal predecessors, (95), 11 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (15), 11 states have call predecessors, (15), 10 states have call successors, (15) [2022-01-10 02:40:10,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 121 transitions. [2022-01-10 02:40:10,090 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 121 transitions. Word has length 32 [2022-01-10 02:40:10,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:40:10,091 INFO L470 AbstractCegarLoop]: Abstraction has 80 states and 121 transitions. [2022-01-10 02:40:10,091 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 5 states have internal predecessors, (20), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-01-10 02:40:10,091 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 121 transitions. [2022-01-10 02:40:10,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-01-10 02:40:10,093 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:40:10,093 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:40:10,112 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 02:40:10,303 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 02:40:10,303 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:40:10,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:40:10,304 INFO L85 PathProgramCache]: Analyzing trace with hash 861184615, now seen corresponding path program 1 times [2022-01-10 02:40:10,305 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 02:40:10,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1494007669] [2022-01-10 02:40:10,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:40:10,305 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 02:40:10,306 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 02:40:10,310 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 02:40:10,312 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 02:40:10,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:40:10,376 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-10 02:40:10,383 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 02:40:10,462 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-10 02:40:10,463 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 02:40:10,463 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 02:40:10,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1494007669] [2022-01-10 02:40:10,463 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1494007669] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:40:10,463 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:40:10,463 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 02:40:10,464 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133084951] [2022-01-10 02:40:10,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:40:10,468 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 02:40:10,469 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 02:40:10,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 02:40:10,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 02:40:10,469 INFO L87 Difference]: Start difference. First operand 80 states and 121 transitions. Second operand has 6 states, 6 states have (on average 4.0) internal successors, (24), 5 states have internal predecessors, (24), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-01-10 02:40:10,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:40:10,532 INFO L93 Difference]: Finished difference Result 169 states and 260 transitions. [2022-01-10 02:40:10,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 02:40:10,533 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 5 states have internal predecessors, (24), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 36 [2022-01-10 02:40:10,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:40:10,534 INFO L225 Difference]: With dead ends: 169 [2022-01-10 02:40:10,534 INFO L226 Difference]: Without dead ends: 127 [2022-01-10 02:40:10,535 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-01-10 02:40:10,535 INFO L933 BasicCegarLoop]: 95 mSDtfsCounter, 52 mSDsluCounter, 365 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 460 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 02:40:10,536 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [57 Valid, 460 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 02:40:10,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2022-01-10 02:40:10,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 123. [2022-01-10 02:40:10,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 103 states have (on average 1.4660194174757282) internal successors, (151), 104 states have internal predecessors, (151), 16 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (20), 18 states have call predecessors, (20), 15 states have call successors, (20) [2022-01-10 02:40:10,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 187 transitions. [2022-01-10 02:40:10,545 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 187 transitions. Word has length 36 [2022-01-10 02:40:10,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:40:10,545 INFO L470 AbstractCegarLoop]: Abstraction has 123 states and 187 transitions. [2022-01-10 02:40:10,545 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 5 states have internal predecessors, (24), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-01-10 02:40:10,545 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 187 transitions. [2022-01-10 02:40:10,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-01-10 02:40:10,546 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:40:10,546 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:40:10,556 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2022-01-10 02:40:10,753 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 02:40:10,753 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:40:10,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:40:10,754 INFO L85 PathProgramCache]: Analyzing trace with hash 1541242985, now seen corresponding path program 1 times [2022-01-10 02:40:10,754 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 02:40:10,754 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1852126467] [2022-01-10 02:40:10,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:40:10,754 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 02:40:10,754 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 02:40:10,755 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 02:40:10,756 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 02:40:10,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:40:10,825 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-10 02:40:10,826 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 02:40:10,904 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-10 02:40:10,904 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 02:40:10,904 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 02:40:10,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1852126467] [2022-01-10 02:40:10,904 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1852126467] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:40:10,904 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:40:10,904 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 02:40:10,905 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989853150] [2022-01-10 02:40:10,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:40:10,905 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 02:40:10,905 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 02:40:10,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 02:40:10,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 02:40:10,906 INFO L87 Difference]: Start difference. First operand 123 states and 187 transitions. Second operand has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 6 states have internal predecessors, (24), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-01-10 02:40:10,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:40:10,983 INFO L93 Difference]: Finished difference Result 180 states and 274 transitions. [2022-01-10 02:40:10,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-10 02:40:10,984 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 6 states have internal predecessors, (24), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 36 [2022-01-10 02:40:10,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:40:10,985 INFO L225 Difference]: With dead ends: 180 [2022-01-10 02:40:10,985 INFO L226 Difference]: Without dead ends: 141 [2022-01-10 02:40:10,985 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-01-10 02:40:10,986 INFO L933 BasicCegarLoop]: 92 mSDtfsCounter, 105 mSDsluCounter, 450 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 542 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 02:40:10,986 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [107 Valid, 542 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 02:40:10,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2022-01-10 02:40:10,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 114. [2022-01-10 02:40:10,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 97 states have (on average 1.443298969072165) internal successors, (140), 98 states have internal predecessors, (140), 13 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (17), 15 states have call predecessors, (17), 12 states have call successors, (17) [2022-01-10 02:40:10,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 170 transitions. [2022-01-10 02:40:10,993 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 170 transitions. Word has length 36 [2022-01-10 02:40:10,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:40:10,993 INFO L470 AbstractCegarLoop]: Abstraction has 114 states and 170 transitions. [2022-01-10 02:40:10,994 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 6 states have internal predecessors, (24), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-01-10 02:40:10,994 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 170 transitions. [2022-01-10 02:40:10,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-01-10 02:40:10,995 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:40:10,995 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:40:11,013 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 02:40:11,212 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 02:40:11,212 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:40:11,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:40:11,213 INFO L85 PathProgramCache]: Analyzing trace with hash 1860643154, now seen corresponding path program 1 times [2022-01-10 02:40:11,213 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 02:40:11,213 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1626211093] [2022-01-10 02:40:11,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:40:11,214 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 02:40:11,214 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 02:40:11,215 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 02:40:11,216 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 02:40:11,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:40:11,253 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-10 02:40:11,269 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 02:40:11,370 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-10 02:40:11,370 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 02:40:11,475 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-10 02:40:11,476 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 02:40:11,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1626211093] [2022-01-10 02:40:11,476 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1626211093] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 02:40:11,476 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 02:40:11,476 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2022-01-10 02:40:11,476 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290007493] [2022-01-10 02:40:11,477 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 02:40:11,477 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 02:40:11,477 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 02:40:11,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 02:40:11,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-01-10 02:40:11,480 INFO L87 Difference]: Start difference. First operand 114 states and 170 transitions. Second operand has 8 states, 8 states have (on average 3.625) internal successors, (29), 7 states have internal predecessors, (29), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-01-10 02:40:11,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:40:11,636 INFO L93 Difference]: Finished difference Result 312 states and 476 transitions. [2022-01-10 02:40:11,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 02:40:11,637 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.625) internal successors, (29), 7 states have internal predecessors, (29), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 40 [2022-01-10 02:40:11,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:40:11,638 INFO L225 Difference]: With dead ends: 312 [2022-01-10 02:40:11,638 INFO L226 Difference]: Without dead ends: 237 [2022-01-10 02:40:11,639 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-01-10 02:40:11,640 INFO L933 BasicCegarLoop]: 96 mSDtfsCounter, 197 mSDsluCounter, 553 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 649 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 02:40:11,640 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [199 Valid, 649 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 02:40:11,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2022-01-10 02:40:11,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 178. [2022-01-10 02:40:11,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 155 states have (on average 1.3870967741935485) internal successors, (215), 154 states have internal predecessors, (215), 19 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (25), 25 states have call predecessors, (25), 18 states have call successors, (25) [2022-01-10 02:40:11,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 259 transitions. [2022-01-10 02:40:11,649 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 259 transitions. Word has length 40 [2022-01-10 02:40:11,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:40:11,649 INFO L470 AbstractCegarLoop]: Abstraction has 178 states and 259 transitions. [2022-01-10 02:40:11,649 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.625) internal successors, (29), 7 states have internal predecessors, (29), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-01-10 02:40:11,650 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 259 transitions. [2022-01-10 02:40:11,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-01-10 02:40:11,651 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:40:11,651 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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, 1] [2022-01-10 02:40:11,664 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 02:40:11,858 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 02:40:11,858 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:40:11,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:40:11,858 INFO L85 PathProgramCache]: Analyzing trace with hash 339137576, now seen corresponding path program 1 times [2022-01-10 02:40:11,859 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 02:40:11,859 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2047002876] [2022-01-10 02:40:11,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:40:11,859 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 02:40:11,859 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 02:40:11,862 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 02:40:11,862 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 02:40:11,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:40:11,903 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 02:40:11,905 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 02:40:11,968 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-01-10 02:40:11,969 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 02:40:11,969 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 02:40:11,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2047002876] [2022-01-10 02:40:11,969 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2047002876] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:40:11,969 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:40:11,969 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 02:40:11,969 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114141149] [2022-01-10 02:40:11,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:40:11,970 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 02:40:11,970 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 02:40:11,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 02:40:11,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 02:40:11,970 INFO L87 Difference]: Start difference. First operand 178 states and 259 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-01-10 02:40:11,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:40:11,993 INFO L93 Difference]: Finished difference Result 331 states and 489 transitions. [2022-01-10 02:40:11,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 02:40:11,994 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 43 [2022-01-10 02:40:11,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:40:11,995 INFO L225 Difference]: With dead ends: 331 [2022-01-10 02:40:11,995 INFO L226 Difference]: Without dead ends: 265 [2022-01-10 02:40:11,995 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 02:40:11,996 INFO L933 BasicCegarLoop]: 143 mSDtfsCounter, 66 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 344 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 02:40:11,996 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [66 Valid, 344 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 02:40:11,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2022-01-10 02:40:12,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 233. [2022-01-10 02:40:12,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 207 states have (on average 1.3478260869565217) internal successors, (279), 206 states have internal predecessors, (279), 22 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (28), 28 states have call predecessors, (28), 21 states have call successors, (28) [2022-01-10 02:40:12,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 329 transitions. [2022-01-10 02:40:12,005 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 329 transitions. Word has length 43 [2022-01-10 02:40:12,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:40:12,005 INFO L470 AbstractCegarLoop]: Abstraction has 233 states and 329 transitions. [2022-01-10 02:40:12,005 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-01-10 02:40:12,005 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 329 transitions. [2022-01-10 02:40:12,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-01-10 02:40:12,006 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:40:12,006 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:40:12,019 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 02:40:12,213 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 02:40:12,213 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:40:12,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:40:12,213 INFO L85 PathProgramCache]: Analyzing trace with hash -1682069059, now seen corresponding path program 1 times [2022-01-10 02:40:12,214 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 02:40:12,214 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [190515646] [2022-01-10 02:40:12,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:40:12,214 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 02:40:12,214 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 02:40:12,215 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 02:40:12,216 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 02:40:12,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:40:12,249 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 02:40:12,250 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 02:40:12,314 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-01-10 02:40:12,314 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 02:40:12,314 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 02:40:12,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [190515646] [2022-01-10 02:40:12,314 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [190515646] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:40:12,314 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:40:12,314 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 02:40:12,314 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667559479] [2022-01-10 02:40:12,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:40:12,315 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 02:40:12,315 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 02:40:12,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 02:40:12,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 02:40:12,315 INFO L87 Difference]: Start difference. First operand 233 states and 329 transitions. Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-01-10 02:40:12,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:40:12,356 INFO L93 Difference]: Finished difference Result 408 states and 573 transitions. [2022-01-10 02:40:12,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 02:40:12,358 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 43 [2022-01-10 02:40:12,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:40:12,360 INFO L225 Difference]: With dead ends: 408 [2022-01-10 02:40:12,360 INFO L226 Difference]: Without dead ends: 178 [2022-01-10 02:40:12,361 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 02:40:12,363 INFO L933 BasicCegarLoop]: 90 mSDtfsCounter, 25 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 250 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 02:40:12,363 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 250 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 02:40:12,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2022-01-10 02:40:12,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 166. [2022-01-10 02:40:12,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 146 states have (on average 1.3082191780821917) internal successors, (191), 148 states have internal predecessors, (191), 15 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (20), 17 states have call predecessors, (20), 14 states have call successors, (20) [2022-01-10 02:40:12,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 226 transitions. [2022-01-10 02:40:12,369 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 226 transitions. Word has length 43 [2022-01-10 02:40:12,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:40:12,370 INFO L470 AbstractCegarLoop]: Abstraction has 166 states and 226 transitions. [2022-01-10 02:40:12,370 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-01-10 02:40:12,370 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 226 transitions. [2022-01-10 02:40:12,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-01-10 02:40:12,373 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:40:12,373 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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, 1, 1] [2022-01-10 02:40:12,383 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 02:40:12,583 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 02:40:12,585 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:40:12,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:40:12,585 INFO L85 PathProgramCache]: Analyzing trace with hash -690232792, now seen corresponding path program 1 times [2022-01-10 02:40:12,586 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 02:40:12,586 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1377935892] [2022-01-10 02:40:12,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:40:12,586 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 02:40:12,586 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 02:40:12,587 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 02:40:12,600 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-01-10 02:40:12,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:40:12,630 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-10 02:40:12,632 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 02:40:12,776 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-10 02:40:12,777 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 02:40:12,900 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-01-10 02:40:12,900 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 02:40:12,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1377935892] [2022-01-10 02:40:12,901 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1377935892] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-10 02:40:12,901 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-10 02:40:12,901 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 14 [2022-01-10 02:40:12,901 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470636201] [2022-01-10 02:40:12,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:40:12,901 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 02:40:12,901 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 02:40:12,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 02:40:12,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2022-01-10 02:40:12,902 INFO L87 Difference]: Start difference. First operand 166 states and 226 transitions. Second operand has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-01-10 02:40:13,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:40:13,170 INFO L93 Difference]: Finished difference Result 316 states and 459 transitions. [2022-01-10 02:40:13,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-10 02:40:13,171 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 44 [2022-01-10 02:40:13,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:40:13,172 INFO L225 Difference]: With dead ends: 316 [2022-01-10 02:40:13,172 INFO L226 Difference]: Without dead ends: 280 [2022-01-10 02:40:13,173 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2022-01-10 02:40:13,173 INFO L933 BasicCegarLoop]: 95 mSDtfsCounter, 193 mSDsluCounter, 407 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 502 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 02:40:13,174 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [200 Valid, 502 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 02:40:13,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2022-01-10 02:40:13,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 204. [2022-01-10 02:40:13,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 178 states have (on average 1.303370786516854) internal successors, (232), 181 states have internal predecessors, (232), 21 states have call successors, (21), 2 states have call predecessors, (21), 4 states have return successors, (26), 23 states have call predecessors, (26), 20 states have call successors, (26) [2022-01-10 02:40:13,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 279 transitions. [2022-01-10 02:40:13,182 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 279 transitions. Word has length 44 [2022-01-10 02:40:13,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:40:13,183 INFO L470 AbstractCegarLoop]: Abstraction has 204 states and 279 transitions. [2022-01-10 02:40:13,183 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-01-10 02:40:13,183 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 279 transitions. [2022-01-10 02:40:13,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-01-10 02:40:13,183 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:40:13,183 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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, 1, 1] [2022-01-10 02:40:13,203 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-01-10 02:40:13,390 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 02:40:13,390 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:40:13,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:40:13,391 INFO L85 PathProgramCache]: Analyzing trace with hash 1084774570, now seen corresponding path program 1 times [2022-01-10 02:40:13,391 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 02:40:13,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [284067854] [2022-01-10 02:40:13,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:40:13,391 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 02:40:13,391 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 02:40:13,392 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 02:40:13,394 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-01-10 02:40:13,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:40:13,427 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 02:40:13,428 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 02:40:13,482 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-01-10 02:40:13,482 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 02:40:13,482 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 02:40:13,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [284067854] [2022-01-10 02:40:13,482 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [284067854] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:40:13,482 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:40:13,482 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 02:40:13,482 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492901173] [2022-01-10 02:40:13,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:40:13,483 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 02:40:13,483 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 02:40:13,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 02:40:13,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 02:40:13,483 INFO L87 Difference]: Start difference. First operand 204 states and 279 transitions. Second operand has 5 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-01-10 02:40:13,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:40:13,503 INFO L93 Difference]: Finished difference Result 211 states and 285 transitions. [2022-01-10 02:40:13,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 02:40:13,504 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 44 [2022-01-10 02:40:13,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:40:13,505 INFO L225 Difference]: With dead ends: 211 [2022-01-10 02:40:13,505 INFO L226 Difference]: Without dead ends: 204 [2022-01-10 02:40:13,505 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 02:40:13,506 INFO L933 BasicCegarLoop]: 98 mSDtfsCounter, 5 mSDsluCounter, 284 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 382 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 02:40:13,506 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 382 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 02:40:13,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2022-01-10 02:40:13,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 204. [2022-01-10 02:40:13,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 178 states have (on average 1.2865168539325842) internal successors, (229), 181 states have internal predecessors, (229), 21 states have call successors, (21), 2 states have call predecessors, (21), 4 states have return successors, (26), 23 states have call predecessors, (26), 20 states have call successors, (26) [2022-01-10 02:40:13,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 276 transitions. [2022-01-10 02:40:13,512 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 276 transitions. Word has length 44 [2022-01-10 02:40:13,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:40:13,512 INFO L470 AbstractCegarLoop]: Abstraction has 204 states and 276 transitions. [2022-01-10 02:40:13,512 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-01-10 02:40:13,513 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 276 transitions. [2022-01-10 02:40:13,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-01-10 02:40:13,513 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:40:13,513 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:40:13,521 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-01-10 02:40:13,719 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 02:40:13,720 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:40:13,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:40:13,720 INFO L85 PathProgramCache]: Analyzing trace with hash -1077808761, now seen corresponding path program 2 times [2022-01-10 02:40:13,720 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 02:40:13,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1357516490] [2022-01-10 02:40:13,721 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-10 02:40:13,721 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 02:40:13,721 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 02:40:13,722 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 02:40:13,724 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-01-10 02:40:13,778 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-01-10 02:40:13,779 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-10 02:40:13,780 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-10 02:40:13,782 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 02:40:14,030 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-01-10 02:40:14,030 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 02:40:14,030 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 02:40:14,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1357516490] [2022-01-10 02:40:14,030 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1357516490] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:40:14,030 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:40:14,030 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 02:40:14,031 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954363141] [2022-01-10 02:40:14,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:40:14,031 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 02:40:14,031 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 02:40:14,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 02:40:14,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 02:40:14,032 INFO L87 Difference]: Start difference. First operand 204 states and 276 transitions. Second operand has 6 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-01-10 02:40:14,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:40:14,089 INFO L93 Difference]: Finished difference Result 247 states and 337 transitions. [2022-01-10 02:40:14,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 02:40:14,090 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 44 [2022-01-10 02:40:14,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:40:14,091 INFO L225 Difference]: With dead ends: 247 [2022-01-10 02:40:14,091 INFO L226 Difference]: Without dead ends: 245 [2022-01-10 02:40:14,091 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-01-10 02:40:14,092 INFO L933 BasicCegarLoop]: 131 mSDtfsCounter, 38 mSDsluCounter, 469 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 600 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 10 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 02:40:14,092 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 600 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 10 Unchecked, 0.0s Time] [2022-01-10 02:40:14,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2022-01-10 02:40:14,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 208. [2022-01-10 02:40:14,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 181 states have (on average 1.281767955801105) internal successors, (232), 184 states have internal predecessors, (232), 21 states have call successors, (21), 3 states have call predecessors, (21), 5 states have return successors, (26), 23 states have call predecessors, (26), 20 states have call successors, (26) [2022-01-10 02:40:14,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 279 transitions. [2022-01-10 02:40:14,100 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 279 transitions. Word has length 44 [2022-01-10 02:40:14,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:40:14,100 INFO L470 AbstractCegarLoop]: Abstraction has 208 states and 279 transitions. [2022-01-10 02:40:14,100 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-01-10 02:40:14,100 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 279 transitions. [2022-01-10 02:40:14,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-01-10 02:40:14,101 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:40:14,101 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:40:14,123 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-01-10 02:40:14,310 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 02:40:14,310 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:40:14,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:40:14,311 INFO L85 PathProgramCache]: Analyzing trace with hash -1020550459, now seen corresponding path program 1 times [2022-01-10 02:40:14,311 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 02:40:14,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [194837039] [2022-01-10 02:40:14,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:40:14,312 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 02:40:14,312 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 02:40:14,313 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 02:40:14,314 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-01-10 02:40:14,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:40:14,353 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 13 conjunts are in the unsatisfiable core [2022-01-10 02:40:14,354 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 02:40:14,559 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-01-10 02:40:14,559 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 02:40:14,678 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-01-10 02:40:14,679 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 02:40:14,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [194837039] [2022-01-10 02:40:14,679 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [194837039] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-10 02:40:14,679 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-10 02:40:14,679 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [12] total 16 [2022-01-10 02:40:14,679 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144651038] [2022-01-10 02:40:14,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:40:14,679 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 02:40:14,679 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 02:40:14,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 02:40:14,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2022-01-10 02:40:14,680 INFO L87 Difference]: Start difference. First operand 208 states and 279 transitions. Second operand has 6 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-01-10 02:40:14,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:40:14,798 INFO L93 Difference]: Finished difference Result 265 states and 359 transitions. [2022-01-10 02:40:14,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 02:40:14,798 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 44 [2022-01-10 02:40:14,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:40:14,800 INFO L225 Difference]: With dead ends: 265 [2022-01-10 02:40:14,800 INFO L226 Difference]: Without dead ends: 263 [2022-01-10 02:40:14,800 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=264, Unknown=0, NotChecked=0, Total=306 [2022-01-10 02:40:14,801 INFO L933 BasicCegarLoop]: 129 mSDtfsCounter, 84 mSDsluCounter, 382 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 511 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 02:40:14,801 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [87 Valid, 511 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 02:40:14,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2022-01-10 02:40:14,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 212. [2022-01-10 02:40:14,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 184 states have (on average 1.2771739130434783) internal successors, (235), 187 states have internal predecessors, (235), 21 states have call successors, (21), 4 states have call predecessors, (21), 6 states have return successors, (26), 23 states have call predecessors, (26), 20 states have call successors, (26) [2022-01-10 02:40:14,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 282 transitions. [2022-01-10 02:40:14,812 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 282 transitions. Word has length 44 [2022-01-10 02:40:14,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:40:14,812 INFO L470 AbstractCegarLoop]: Abstraction has 212 states and 282 transitions. [2022-01-10 02:40:14,813 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-01-10 02:40:14,813 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 282 transitions. [2022-01-10 02:40:14,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-01-10 02:40:14,813 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:40:14,813 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:40:14,835 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-01-10 02:40:15,020 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 02:40:15,020 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:40:15,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:40:15,021 INFO L85 PathProgramCache]: Analyzing trace with hash 1134786859, now seen corresponding path program 1 times [2022-01-10 02:40:15,021 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 02:40:15,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1727424529] [2022-01-10 02:40:15,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:40:15,021 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 02:40:15,021 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 02:40:15,022 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 02:40:15,024 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-01-10 02:40:15,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:40:15,057 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 02:40:15,058 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 02:40:15,111 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-01-10 02:40:15,111 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 02:40:15,111 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 02:40:15,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1727424529] [2022-01-10 02:40:15,111 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1727424529] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:40:15,111 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:40:15,111 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 02:40:15,111 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055854437] [2022-01-10 02:40:15,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:40:15,112 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 02:40:15,112 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 02:40:15,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 02:40:15,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 02:40:15,112 INFO L87 Difference]: Start difference. First operand 212 states and 282 transitions. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-01-10 02:40:15,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:40:15,143 INFO L93 Difference]: Finished difference Result 351 states and 481 transitions. [2022-01-10 02:40:15,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 02:40:15,144 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 45 [2022-01-10 02:40:15,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:40:15,145 INFO L225 Difference]: With dead ends: 351 [2022-01-10 02:40:15,145 INFO L226 Difference]: Without dead ends: 299 [2022-01-10 02:40:15,145 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 02:40:15,146 INFO L933 BasicCegarLoop]: 106 mSDtfsCounter, 75 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 309 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 02:40:15,146 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [75 Valid, 309 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 02:40:15,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2022-01-10 02:40:15,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 231. [2022-01-10 02:40:15,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 200 states have (on average 1.285) internal successors, (257), 202 states have internal predecessors, (257), 24 states have call successors, (24), 4 states have call predecessors, (24), 6 states have return successors, (29), 26 states have call predecessors, (29), 23 states have call successors, (29) [2022-01-10 02:40:15,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 310 transitions. [2022-01-10 02:40:15,159 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 310 transitions. Word has length 45 [2022-01-10 02:40:15,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:40:15,159 INFO L470 AbstractCegarLoop]: Abstraction has 231 states and 310 transitions. [2022-01-10 02:40:15,159 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-01-10 02:40:15,160 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 310 transitions. [2022-01-10 02:40:15,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-01-10 02:40:15,160 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:40:15,160 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1] [2022-01-10 02:40:15,181 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-01-10 02:40:15,366 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 02:40:15,367 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:40:15,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:40:15,367 INFO L85 PathProgramCache]: Analyzing trace with hash 702695573, now seen corresponding path program 1 times [2022-01-10 02:40:15,367 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 02:40:15,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [384569743] [2022-01-10 02:40:15,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:40:15,367 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 02:40:15,368 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 02:40:15,368 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 02:40:15,370 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-01-10 02:40:15,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:40:15,404 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 02:40:15,405 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 02:40:15,462 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-01-10 02:40:15,462 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 02:40:15,462 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 02:40:15,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [384569743] [2022-01-10 02:40:15,462 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [384569743] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:40:15,462 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:40:15,462 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 02:40:15,463 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918336220] [2022-01-10 02:40:15,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:40:15,463 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 02:40:15,463 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 02:40:15,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 02:40:15,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 02:40:15,463 INFO L87 Difference]: Start difference. First operand 231 states and 310 transitions. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-01-10 02:40:15,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:40:15,482 INFO L93 Difference]: Finished difference Result 246 states and 326 transitions. [2022-01-10 02:40:15,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 02:40:15,483 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 48 [2022-01-10 02:40:15,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:40:15,484 INFO L225 Difference]: With dead ends: 246 [2022-01-10 02:40:15,484 INFO L226 Difference]: Without dead ends: 207 [2022-01-10 02:40:15,484 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 02:40:15,485 INFO L933 BasicCegarLoop]: 97 mSDtfsCounter, 1 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 285 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 02:40:15,485 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 285 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 02:40:15,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2022-01-10 02:40:15,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 207. [2022-01-10 02:40:15,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 176 states have (on average 1.3011363636363635) internal successors, (229), 179 states have internal predecessors, (229), 24 states have call successors, (24), 4 states have call predecessors, (24), 6 states have return successors, (27), 25 states have call predecessors, (27), 23 states have call successors, (27) [2022-01-10 02:40:15,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 280 transitions. [2022-01-10 02:40:15,495 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 280 transitions. Word has length 48 [2022-01-10 02:40:15,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:40:15,495 INFO L470 AbstractCegarLoop]: Abstraction has 207 states and 280 transitions. [2022-01-10 02:40:15,495 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-01-10 02:40:15,495 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 280 transitions. [2022-01-10 02:40:15,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-01-10 02:40:15,495 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:40:15,496 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:40:15,504 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Ended with exit code 0 [2022-01-10 02:40:15,702 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 02:40:15,702 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:40:15,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:40:15,703 INFO L85 PathProgramCache]: Analyzing trace with hash -1948634931, now seen corresponding path program 1 times [2022-01-10 02:40:15,703 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 02:40:15,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [18995454] [2022-01-10 02:40:15,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:40:15,703 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 02:40:15,703 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 02:40:15,704 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 02:40:15,706 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-01-10 02:40:15,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:40:15,746 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-10 02:40:15,747 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 02:40:15,855 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-01-10 02:40:15,855 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 02:40:15,953 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-01-10 02:40:15,953 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 02:40:15,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [18995454] [2022-01-10 02:40:15,953 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [18995454] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 02:40:15,953 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 02:40:15,954 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2022-01-10 02:40:15,954 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336269379] [2022-01-10 02:40:15,954 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 02:40:15,954 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 02:40:15,954 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 02:40:15,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 02:40:15,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-01-10 02:40:15,954 INFO L87 Difference]: Start difference. First operand 207 states and 280 transitions. Second operand has 9 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 8 states have internal predecessors, (34), 3 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2022-01-10 02:40:16,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:40:16,074 INFO L93 Difference]: Finished difference Result 298 states and 396 transitions. [2022-01-10 02:40:16,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 02:40:16,074 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 8 states have internal predecessors, (34), 3 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 50 [2022-01-10 02:40:16,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:40:16,075 INFO L225 Difference]: With dead ends: 298 [2022-01-10 02:40:16,075 INFO L226 Difference]: Without dead ends: 232 [2022-01-10 02:40:16,076 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 89 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2022-01-10 02:40:16,076 INFO L933 BasicCegarLoop]: 90 mSDtfsCounter, 174 mSDsluCounter, 547 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 637 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 02:40:16,076 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [179 Valid, 637 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 02:40:16,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2022-01-10 02:40:16,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 166. [2022-01-10 02:40:16,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 140 states have (on average 1.3142857142857143) internal successors, (184), 143 states have internal predecessors, (184), 19 states have call successors, (19), 4 states have call predecessors, (19), 6 states have return successors, (22), 20 states have call predecessors, (22), 18 states have call successors, (22) [2022-01-10 02:40:16,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 225 transitions. [2022-01-10 02:40:16,085 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 225 transitions. Word has length 50 [2022-01-10 02:40:16,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:40:16,085 INFO L470 AbstractCegarLoop]: Abstraction has 166 states and 225 transitions. [2022-01-10 02:40:16,085 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 8 states have internal predecessors, (34), 3 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2022-01-10 02:40:16,085 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 225 transitions. [2022-01-10 02:40:16,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-01-10 02:40:16,086 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:40:16,086 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:40:16,105 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-01-10 02:40:16,292 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 02:40:16,293 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:40:16,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:40:16,293 INFO L85 PathProgramCache]: Analyzing trace with hash -1060673824, now seen corresponding path program 1 times [2022-01-10 02:40:16,293 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 02:40:16,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [921254276] [2022-01-10 02:40:16,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:40:16,293 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 02:40:16,294 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 02:40:16,294 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 02:40:16,296 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-01-10 02:40:16,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:40:16,358 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 02:40:16,359 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 02:40:16,435 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-01-10 02:40:16,435 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 02:40:16,435 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 02:40:16,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [921254276] [2022-01-10 02:40:16,435 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [921254276] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:40:16,435 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:40:16,435 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 02:40:16,435 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995863343] [2022-01-10 02:40:16,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:40:16,436 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 02:40:16,436 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 02:40:16,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 02:40:16,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 02:40:16,436 INFO L87 Difference]: Start difference. First operand 166 states and 225 transitions. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-01-10 02:40:16,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:40:16,491 INFO L93 Difference]: Finished difference Result 241 states and 330 transitions. [2022-01-10 02:40:16,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 02:40:16,492 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 49 [2022-01-10 02:40:16,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:40:16,492 INFO L225 Difference]: With dead ends: 241 [2022-01-10 02:40:16,492 INFO L226 Difference]: Without dead ends: 199 [2022-01-10 02:40:16,493 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 02:40:16,493 INFO L933 BasicCegarLoop]: 133 mSDtfsCounter, 128 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 345 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 02:40:16,493 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [128 Valid, 345 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 02:40:16,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2022-01-10 02:40:16,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 166. [2022-01-10 02:40:16,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 140 states have (on average 1.3) internal successors, (182), 143 states have internal predecessors, (182), 19 states have call successors, (19), 4 states have call predecessors, (19), 6 states have return successors, (22), 20 states have call predecessors, (22), 18 states have call successors, (22) [2022-01-10 02:40:16,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 223 transitions. [2022-01-10 02:40:16,501 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 223 transitions. Word has length 49 [2022-01-10 02:40:16,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:40:16,501 INFO L470 AbstractCegarLoop]: Abstraction has 166 states and 223 transitions. [2022-01-10 02:40:16,502 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-01-10 02:40:16,502 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 223 transitions. [2022-01-10 02:40:16,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-01-10 02:40:16,502 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:40:16,502 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:40:16,522 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-01-10 02:40:16,710 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 02:40:16,710 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:40:16,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:40:16,711 INFO L85 PathProgramCache]: Analyzing trace with hash 45509775, now seen corresponding path program 1 times [2022-01-10 02:40:16,711 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 02:40:16,711 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [728227961] [2022-01-10 02:40:16,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:40:16,711 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 02:40:16,711 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 02:40:16,712 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 02:40:16,713 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-01-10 02:40:16,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-10 02:40:16,764 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-01-10 02:40:16,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-10 02:40:16,827 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2022-01-10 02:40:16,827 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-01-10 02:40:16,827 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-01-10 02:40:16,864 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-01-10 02:40:17,029 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 02:40:17,031 INFO L732 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:40:17,033 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2022-01-10 02:40:17,081 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 02:40:17 BoogieIcfgContainer [2022-01-10 02:40:17,081 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-10 02:40:17,082 INFO L158 Benchmark]: Toolchain (without parser) took 8387.25ms. Allocated memory was 202.4MB in the beginning and 271.6MB in the end (delta: 69.2MB). Free memory was 151.3MB in the beginning and 242.1MB in the end (delta: -90.8MB). There was no memory consumed. Max. memory is 8.0GB. [2022-01-10 02:40:17,082 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 202.4MB. Free memory is still 168.5MB. There was no memory consumed. Max. memory is 8.0GB. [2022-01-10 02:40:17,082 INFO L158 Benchmark]: CACSL2BoogieTranslator took 306.25ms. Allocated memory is still 202.4MB. Free memory was 151.1MB in the beginning and 175.9MB in the end (delta: -24.8MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2022-01-10 02:40:17,082 INFO L158 Benchmark]: Boogie Procedure Inliner took 42.72ms. Allocated memory is still 202.4MB. Free memory was 175.9MB in the beginning and 173.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-01-10 02:40:17,083 INFO L158 Benchmark]: Boogie Preprocessor took 33.93ms. Allocated memory is still 202.4MB. Free memory was 173.8MB in the beginning and 172.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-01-10 02:40:17,083 INFO L158 Benchmark]: RCFGBuilder took 475.40ms. Allocated memory is still 202.4MB. Free memory was 172.3MB in the beginning and 157.6MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. [2022-01-10 02:40:17,083 INFO L158 Benchmark]: TraceAbstraction took 7523.50ms. Allocated memory was 202.4MB in the beginning and 271.6MB in the end (delta: 69.2MB). Free memory was 157.1MB in the beginning and 242.1MB in the end (delta: -85.1MB). There was no memory consumed. Max. memory is 8.0GB. [2022-01-10 02:40:17,084 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 202.4MB. Free memory is still 168.5MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 306.25ms. Allocated memory is still 202.4MB. Free memory was 151.1MB in the beginning and 175.9MB in the end (delta: -24.8MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 42.72ms. Allocated memory is still 202.4MB. Free memory was 175.9MB in the beginning and 173.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 33.93ms. Allocated memory is still 202.4MB. Free memory was 173.8MB in the beginning and 172.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 475.40ms. Allocated memory is still 202.4MB. Free memory was 172.3MB in the beginning and 157.6MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. * TraceAbstraction took 7523.50ms. Allocated memory was 202.4MB in the beginning and 271.6MB in the end (delta: 69.2MB). Free memory was 157.1MB in the beginning and 242.1MB in the end (delta: -85.1MB). There was no memory consumed. 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 - CounterExampleResult [Line: 17]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L226] unsigned int a ; [L227] unsigned int ma = __VERIFIER_nondet_uint(); [L228] signed char ea = __VERIFIER_nondet_char(); [L229] unsigned int b ; [L230] unsigned int mb = __VERIFIER_nondet_uint(); [L231] signed char eb = __VERIFIER_nondet_char(); [L232] unsigned int r_add ; [L233] unsigned int zero ; [L234] int sa ; [L235] int sb ; [L236] int tmp ; [L237] int tmp___0 ; [L238] int tmp___1 ; [L239] int tmp___2 ; [L240] int tmp___3 ; [L241] int tmp___4 ; [L242] int tmp___5 ; [L243] int tmp___6 ; [L244] int tmp___7 ; [L245] int tmp___8 ; [L246] int tmp___9 ; [L247] int __retres23 ; [L251] CALL, EXPR base2flt(0, 0) VAL [\old(e)=0, \old(m)=0] [L25] unsigned int res ; [L26] unsigned int __retres4 ; VAL [\old(e)=0, \old(m)=0, e=0, m=0] [L29] COND TRUE ! m [L30] __retres4 = 0U VAL [\old(e)=0, \old(m)=0, __retres4=0, e=0, m=0] [L80] return (__retres4); VAL [\old(e)=0, \old(m)=0, \result=0, __retres4=0, e=0, m=0] [L251] RET, EXPR base2flt(0, 0) VAL [base2flt(0, 0)=0] [L251] zero = base2flt(0, 0) [L252] CALL, EXPR base2flt(ma, ea) VAL [\old(e)=0, \old(m)=16777216] [L25] unsigned int res ; [L26] unsigned int __retres4 ; VAL [\old(e)=0, \old(m)=16777216, e=0, m=16777216] [L29] COND FALSE !(! m) VAL [\old(e)=0, \old(m)=16777216, e=0, m=16777216] [L35] COND FALSE !(m < 1U << 24U) VAL [\old(e)=0, \old(m)=16777216, e=0, m=16777216] [L57] COND TRUE 1 VAL [\old(e)=0, \old(m)=16777216, e=0, m=16777216] [L59] COND FALSE !(m >= 1U << 25U) VAL [\old(e)=0, \old(m)=16777216, e=0, m=16777216] [L76] m = m & ~ (1U << 24U) [L77] res = m | ((unsigned int )(e + 128) << 24U) [L78] __retres4 = res VAL [\old(e)=0, \old(m)=16777216, __retres4=2147483648, e=0, m=0, res=2147483648] [L80] return (__retres4); VAL [\old(e)=0, \old(m)=16777216, \result=-2147483648, __retres4=2147483648, e=0, m=0, res=2147483648] [L252] RET, EXPR base2flt(ma, ea) VAL [base2flt(ma, ea)=-2147483648, ea=0, ma=16777216, zero=0] [L252] a = base2flt(ma, ea) [L253] CALL, EXPR base2flt(mb, eb) VAL [\old(e)=64, \old(m)=16777216] [L25] unsigned int res ; [L26] unsigned int __retres4 ; VAL [\old(e)=64, \old(m)=16777216, e=64, m=16777216] [L29] COND FALSE !(! m) VAL [\old(e)=64, \old(m)=16777216, e=64, m=16777216] [L35] COND FALSE !(m < 1U << 24U) VAL [\old(e)=64, \old(m)=16777216, e=64, m=16777216] [L57] COND TRUE 1 VAL [\old(e)=64, \old(m)=16777216, e=64, m=16777216] [L59] COND FALSE !(m >= 1U << 25U) VAL [\old(e)=64, \old(m)=16777216, e=64, m=16777216] [L76] m = m & ~ (1U << 24U) [L77] res = m | ((unsigned int )(e + 128) << 24U) [L78] __retres4 = res VAL [\old(e)=64, \old(m)=16777216, __retres4=3221225472, e=64, m=0, res=3221225472] [L80] return (__retres4); VAL [\old(e)=64, \old(m)=16777216, \result=-1073741824, __retres4=3221225472, e=64, m=0, res=3221225472] [L253] RET, EXPR base2flt(mb, eb) VAL [a=2147483648, base2flt(mb, eb)=-1073741824, ea=0, eb=64, ma=16777216, mb=16777216, zero=0] [L253] b = base2flt(mb, eb) [L255] COND FALSE !(a < zero) VAL [a=2147483648, b=3221225472, ea=0, eb=64, ma=16777216, mb=16777216, zero=0] [L258] COND TRUE a > zero [L259] tmp = 1 VAL [a=2147483648, b=3221225472, ea=0, eb=64, ma=16777216, mb=16777216, tmp=1, zero=0] [L263] sa = tmp VAL [a=2147483648, b=3221225472, ea=0, eb=64, ma=16777216, mb=16777216, sa=1, tmp=1, zero=0] [L265] COND FALSE !(b < zero) VAL [a=2147483648, b=3221225472, ea=0, eb=64, ma=16777216, mb=16777216, sa=1, tmp=1, zero=0] [L268] COND TRUE b > zero [L269] tmp___0 = 1 VAL [a=2147483648, b=3221225472, ea=0, eb=64, ma=16777216, mb=16777216, sa=1, tmp=1, tmp___0=1, zero=0] [L273] sb = tmp___0 VAL [a=2147483648, b=3221225472, ea=0, eb=64, ma=16777216, mb=16777216, sa=1, sb=1, tmp=1, tmp___0=1, zero=0] [L276] CALL addflt(a, b) [L84] unsigned int res ; [L85] unsigned int ma ; [L86] unsigned int mb ; [L87] unsigned int delta ; [L88] int ea ; [L89] int eb ; [L90] unsigned int tmp ; [L91] unsigned int __retres10 ; VAL [\old(a)=2147483648, \old(b)=3221225472, a=2147483648, b=3221225472] [L94] COND TRUE a < b [L95] tmp = a [L96] a = b [L97] b = tmp VAL [\old(a)=2147483648, \old(b)=3221225472, a=3221225472, b=2147483648, tmp=2147483648] [L101] COND FALSE !(! b) [L108] ma = a & ((1U << 24U) - 1U) [L109] ea = (int )(a >> 24U) - 128 [L110] ma = ma | (1U << 24U) [L111] mb = b & ((1U << 24U) - 1U) [L112] eb = (int )(b >> 24U) - 128 [L113] mb = mb | (1U << 24U) VAL [\old(a)=2147483648, \old(b)=3221225472, a=3221225472, b=2147483648, ea=64, eb=0, ma=16777216, mb=16777216, tmp=2147483648] [L114] CALL __VERIFIER_assert(ea >= eb) VAL [\old(cond)=1] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L114] RET __VERIFIER_assert(ea >= eb) VAL [\old(a)=2147483648, \old(b)=3221225472, a=3221225472, b=2147483648, ea=64, eb=0, ma=16777216, mb=16777216, tmp=2147483648] [L115] delta = ea - eb VAL [\old(a)=2147483648, \old(b)=3221225472, a=3221225472, b=2147483648, delta=64, ea=64, eb=0, ma=16777216, mb=16777216, tmp=2147483648] [L116] CALL __VERIFIER_assert(delta < sizeof(mb) * 8) VAL [\old(cond)=0] [L16] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L17] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 72 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 7.4s, OverallIterations: 15, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1236 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1204 mSDsluCounter, 6559 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 10 IncrementalHoareTripleChecker+Unchecked, 5002 mSDsCounter, 113 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 835 IncrementalHoareTripleChecker+Invalid, 958 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 113 mSolverCounterUnsat, 1557 mSDtfsCounter, 835 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 818 GetRequests, 717 SyntacticMatches, 2 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=233occurred in iteration=5, InterpolantAutomatonStates: 92, 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, 14 MinimizatonAttempts, 502 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 648 NumberOfCodeBlocks, 630 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 789 ConstructedInterpolants, 2 QuantifiedInterpolants, 1312 SizeOfPredicates, 51 NumberOfNonLiveVariables, 1139 ConjunctsInSsa, 90 ConjunctsInUnsatCore, 19 InterpolantComputations, 11 PerfectInterpolantSequences, 274/313 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 proved your program to be incorrect! [2022-01-10 02:40:17,129 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...