/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_Default.epf -i ../../../trunk/examples/svcomp/bitvector/soft_float_1-2a.c.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-09 22:18:06,846 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-09 22:18:06,848 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-09 22:18:06,906 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-09 22:18:06,944 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-09 22:18:06,944 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-09 22:18:06,945 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-09 22:18:06,946 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Default.epf [2022-01-09 22:18:06,964 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-09 22:18:06,964 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-09 22:18:06,964 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-09 22:18:06,964 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-09 22:18:06,965 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-09 22:18:06,965 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-09 22:18:06,966 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-09 22:18:06,966 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-09 22:18:06,966 INFO L138 SettingsManager]: * Use SBE=true [2022-01-09 22:18:06,966 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-09 22:18:06,967 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-09 22:18:06,967 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-09 22:18:06,967 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-09 22:18:06,968 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-09 22:18:06,968 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-09 22:18:06,968 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-09 22:18:06,968 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-09 22:18:06,968 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-09 22:18:06,968 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-09 22:18:06,968 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-09 22:18:06,968 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-09 22:18:06,969 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-09 22:18:06,969 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-09 22:18:06,969 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-09 22:18:06,969 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-09 22:18:06,969 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-09 22:18:06,969 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-09 22:18:06,969 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-09 22:18:06,969 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-09 22:18:06,970 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-09 22:18:06,970 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-09 22:18:07,176 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-09 22:18:07,197 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-09 22:18:07,199 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-09 22:18:07,200 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-09 22:18:07,200 INFO L275 PluginConnector]: CDTParser initialized [2022-01-09 22:18:07,201 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/bitvector/soft_float_1-2a.c.cil.c [2022-01-09 22:18:07,255 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1ec03a72c/31c359f4c4fc4c2d82d4c5771f47f31d/FLAG3b4934bdb [2022-01-09 22:18:07,657 INFO L306 CDTParser]: Found 1 translation units. [2022-01-09 22:18:07,657 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/bitvector/soft_float_1-2a.c.cil.c [2022-01-09 22:18:07,664 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1ec03a72c/31c359f4c4fc4c2d82d4c5771f47f31d/FLAG3b4934bdb [2022-01-09 22:18:08,048 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1ec03a72c/31c359f4c4fc4c2d82d4c5771f47f31d [2022-01-09 22:18:08,050 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-09 22:18:08,051 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-09 22:18:08,060 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-09 22:18:08,060 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-09 22:18:08,062 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-09 22:18:08,063 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 10:18:08" (1/1) ... [2022-01-09 22:18:08,064 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8f53c6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:18:08, skipping insertion in model container [2022-01-09 22:18:08,064 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 10:18:08" (1/1) ... [2022-01-09 22:18:08,071 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-09 22:18:08,097 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-09 22:18:08,247 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_1-2a.c.cil.c[755,768] [2022-01-09 22:18:08,328 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-09 22:18:08,335 INFO L203 MainTranslator]: Completed pre-run [2022-01-09 22:18:08,348 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_1-2a.c.cil.c[755,768] [2022-01-09 22:18:08,371 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-09 22:18:08,389 INFO L208 MainTranslator]: Completed translation [2022-01-09 22:18:08,390 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:18:08 WrapperNode [2022-01-09 22:18:08,390 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-09 22:18:08,391 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-09 22:18:08,391 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-09 22:18:08,391 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-09 22:18:08,397 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:18:08" (1/1) ... [2022-01-09 22:18:08,404 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:18:08" (1/1) ... [2022-01-09 22:18:08,427 INFO L137 Inliner]: procedures = 17, calls = 18, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 148 [2022-01-09 22:18:08,427 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-09 22:18:08,428 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-09 22:18:08,428 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-09 22:18:08,428 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-09 22:18:08,435 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:18:08" (1/1) ... [2022-01-09 22:18:08,435 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:18:08" (1/1) ... [2022-01-09 22:18:08,437 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:18:08" (1/1) ... [2022-01-09 22:18:08,437 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:18:08" (1/1) ... [2022-01-09 22:18:08,442 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:18:08" (1/1) ... [2022-01-09 22:18:08,446 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:18:08" (1/1) ... [2022-01-09 22:18:08,447 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:18:08" (1/1) ... [2022-01-09 22:18:08,449 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-09 22:18:08,450 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-09 22:18:08,450 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-09 22:18:08,450 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-09 22:18:08,451 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:18:08" (1/1) ... [2022-01-09 22:18:08,461 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-09 22:18:08,471 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-09 22:18:08,484 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) [2022-01-09 22:18:08,489 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 [2022-01-09 22:18:08,515 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-09 22:18:08,515 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-09 22:18:08,515 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2022-01-09 22:18:08,516 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2022-01-09 22:18:08,516 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-09 22:18:08,516 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-09 22:18:08,516 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-01-09 22:18:08,516 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-01-09 22:18:08,569 INFO L234 CfgBuilder]: Building ICFG [2022-01-09 22:18:08,571 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-09 22:18:08,908 INFO L275 CfgBuilder]: Performing block encoding [2022-01-09 22:18:08,914 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-09 22:18:08,914 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-01-09 22:18:08,915 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 10:18:08 BoogieIcfgContainer [2022-01-09 22:18:08,916 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-09 22:18:08,917 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-09 22:18:08,917 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-09 22:18:08,924 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-09 22:18:08,925 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.01 10:18:08" (1/3) ... [2022-01-09 22:18:08,925 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36a113e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 10:18:08, skipping insertion in model container [2022-01-09 22:18:08,926 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:18:08" (2/3) ... [2022-01-09 22:18:08,926 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36a113e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 10:18:08, skipping insertion in model container [2022-01-09 22:18:08,926 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 10:18:08" (3/3) ... [2022-01-09 22:18:08,927 INFO L111 eAbstractionObserver]: Analyzing ICFG soft_float_1-2a.c.cil.c [2022-01-09 22:18:08,932 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-09 22:18:08,932 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-09 22:18:08,968 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-09 22:18:08,973 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 [2022-01-09 22:18:08,973 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-09 22:18:08,989 INFO L276 IsEmpty]: Start isEmpty. Operand has 72 states, 60 states have (on average 1.6) internal successors, (96), 63 states have internal predecessors, (96), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-01-09 22:18:08,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-01-09 22:18:08,994 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 22:18:08,994 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] [2022-01-09 22:18:08,995 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 22:18:08,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 22:18:08,999 INFO L85 PathProgramCache]: Analyzing trace with hash -760882007, now seen corresponding path program 1 times [2022-01-09 22:18:09,006 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 22:18:09,007 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808746843] [2022-01-09 22:18:09,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 22:18:09,007 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 22:18:09,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 22:18:09,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-01-09 22:18:09,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 22:18:09,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-01-09 22:18:09,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 22:18:09,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-01-09 22:18:09,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 22:18:09,354 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-09 22:18:09,355 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 22:18:09,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808746843] [2022-01-09 22:18:09,356 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1808746843] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-09 22:18:09,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [177975173] [2022-01-09 22:18:09,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 22:18:09,356 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 22:18:09,356 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-09 22:18:09,359 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-09 22:18:09,360 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-09 22:18:09,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 22:18:09,433 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 22 conjunts are in the unsatisfiable core [2022-01-09 22:18:09,438 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-09 22:18:09,563 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-09 22:18:09,564 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-09 22:18:09,770 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-09 22:18:09,771 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [177975173] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-09 22:18:09,771 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-09 22:18:09,771 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 8] total 16 [2022-01-09 22:18:09,773 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387283169] [2022-01-09 22:18:09,774 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-09 22:18:09,777 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-09 22:18:09,777 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 22:18:09,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-09 22:18:09,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2022-01-09 22:18:09,801 INFO L87 Difference]: Start difference. First operand has 72 states, 60 states have (on average 1.6) internal successors, (96), 63 states have internal predecessors, (96), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 16 states, 16 states have (on average 2.125) internal successors, (34), 14 states have internal predecessors, (34), 4 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2022-01-09 22:18:10,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 22:18:10,334 INFO L93 Difference]: Finished difference Result 255 states and 424 transitions. [2022-01-09 22:18:10,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-09 22:18:10,337 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.125) internal successors, (34), 14 states have internal predecessors, (34), 4 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) Word has length 32 [2022-01-09 22:18:10,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 22:18:10,359 INFO L225 Difference]: With dead ends: 255 [2022-01-09 22:18:10,360 INFO L226 Difference]: Without dead ends: 170 [2022-01-09 22:18:10,369 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 60 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=100, Invalid=500, Unknown=0, NotChecked=0, Total=600 [2022-01-09 22:18:10,372 INFO L933 BasicCegarLoop]: 172 mSDtfsCounter, 220 mSDsluCounter, 1703 mSDsCounter, 0 mSdLazyCounter, 446 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 1875 SdHoareTripleChecker+Invalid, 473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 446 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-09 22:18:10,373 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [223 Valid, 1875 Invalid, 473 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 446 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-09 22:18:10,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2022-01-09 22:18:10,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 103. [2022-01-09 22:18:10,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 87 states have (on average 1.4482758620689655) internal successors, (126), 90 states have internal predecessors, (126), 11 states have call successors, (11), 3 states have call predecessors, (11), 4 states have return successors, (16), 11 states have call predecessors, (16), 10 states have call successors, (16) [2022-01-09 22:18:10,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 153 transitions. [2022-01-09 22:18:10,432 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 153 transitions. Word has length 32 [2022-01-09 22:18:10,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 22:18:10,432 INFO L470 AbstractCegarLoop]: Abstraction has 103 states and 153 transitions. [2022-01-09 22:18:10,433 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.125) internal successors, (34), 14 states have internal predecessors, (34), 4 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2022-01-09 22:18:10,433 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 153 transitions. [2022-01-09 22:18:10,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-01-09 22:18:10,434 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 22:18:10,435 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] [2022-01-09 22:18:10,459 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-09 22:18:10,635 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-01-09 22:18:10,636 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 22:18:10,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 22:18:10,637 INFO L85 PathProgramCache]: Analyzing trace with hash 1139634014, now seen corresponding path program 1 times [2022-01-09 22:18:10,637 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 22:18:10,637 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334154554] [2022-01-09 22:18:10,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 22:18:10,637 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 22:18:10,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 22:18:10,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-01-09 22:18:10,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 22:18:10,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-01-09 22:18:10,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 22:18:10,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-01-09 22:18:10,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 22:18:10,777 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-09 22:18:10,777 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 22:18:10,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334154554] [2022-01-09 22:18:10,777 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334154554] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-09 22:18:10,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1337617839] [2022-01-09 22:18:10,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 22:18:10,778 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 22:18:10,778 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-09 22:18:10,779 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-09 22:18:10,805 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-09 22:18:10,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 22:18:10,836 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 31 conjunts are in the unsatisfiable core [2022-01-09 22:18:10,838 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-09 22:18:10,947 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-01-09 22:18:10,948 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-09 22:18:11,362 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-09 22:18:11,365 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1337617839] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-09 22:18:11,365 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-09 22:18:11,370 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 11] total 18 [2022-01-09 22:18:11,370 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501036998] [2022-01-09 22:18:11,370 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-09 22:18:11,371 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-09 22:18:11,371 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 22:18:11,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-09 22:18:11,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2022-01-09 22:18:11,374 INFO L87 Difference]: Start difference. First operand 103 states and 153 transitions. Second operand has 18 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 15 states have internal predecessors, (40), 5 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) [2022-01-09 22:18:11,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 22:18:11,898 INFO L93 Difference]: Finished difference Result 273 states and 422 transitions. [2022-01-09 22:18:11,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-09 22:18:11,899 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 15 states have internal predecessors, (40), 5 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) Word has length 36 [2022-01-09 22:18:11,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 22:18:11,901 INFO L225 Difference]: With dead ends: 273 [2022-01-09 22:18:11,901 INFO L226 Difference]: Without dead ends: 208 [2022-01-09 22:18:11,902 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=167, Invalid=825, Unknown=0, NotChecked=0, Total=992 [2022-01-09 22:18:11,903 INFO L933 BasicCegarLoop]: 115 mSDtfsCounter, 427 mSDsluCounter, 894 mSDsCounter, 0 mSdLazyCounter, 373 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 431 SdHoareTripleChecker+Valid, 1009 SdHoareTripleChecker+Invalid, 433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-09 22:18:11,904 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [431 Valid, 1009 Invalid, 433 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 373 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-09 22:18:11,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2022-01-09 22:18:11,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 103. [2022-01-09 22:18:11,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 87 states have (on average 1.4022988505747127) internal successors, (122), 90 states have internal predecessors, (122), 11 states have call successors, (11), 3 states have call predecessors, (11), 4 states have return successors, (16), 11 states have call predecessors, (16), 10 states have call successors, (16) [2022-01-09 22:18:11,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 149 transitions. [2022-01-09 22:18:11,928 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 149 transitions. Word has length 36 [2022-01-09 22:18:11,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 22:18:11,929 INFO L470 AbstractCegarLoop]: Abstraction has 103 states and 149 transitions. [2022-01-09 22:18:11,929 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 15 states have internal predecessors, (40), 5 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) [2022-01-09 22:18:11,929 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 149 transitions. [2022-01-09 22:18:11,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-01-09 22:18:11,934 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 22:18:11,935 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] [2022-01-09 22:18:11,962 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-09 22:18:12,158 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-01-09 22:18:12,159 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 22:18:12,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 22:18:12,159 INFO L85 PathProgramCache]: Analyzing trace with hash -1276417986, now seen corresponding path program 1 times [2022-01-09 22:18:12,160 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 22:18:12,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066831323] [2022-01-09 22:18:12,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 22:18:12,160 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 22:18:12,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 22:18:12,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-01-09 22:18:12,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 22:18:12,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-01-09 22:18:12,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 22:18:12,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-01-09 22:18:12,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 22:18:12,288 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-09 22:18:12,288 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 22:18:12,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066831323] [2022-01-09 22:18:12,290 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066831323] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-09 22:18:12,290 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-09 22:18:12,291 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-09 22:18:12,291 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751014801] [2022-01-09 22:18:12,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-09 22:18:12,291 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-09 22:18:12,292 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 22:18:12,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-09 22:18:12,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-09 22:18:12,293 INFO L87 Difference]: Start difference. First operand 103 states and 149 transitions. Second operand has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 5 states have internal predecessors, (29), 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) [2022-01-09 22:18:12,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 22:18:12,356 INFO L93 Difference]: Finished difference Result 231 states and 341 transitions. [2022-01-09 22:18:12,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-09 22:18:12,357 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 5 states have internal predecessors, (29), 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 40 [2022-01-09 22:18:12,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 22:18:12,359 INFO L225 Difference]: With dead ends: 231 [2022-01-09 22:18:12,359 INFO L226 Difference]: Without dead ends: 170 [2022-01-09 22:18:12,361 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-01-09 22:18:12,363 INFO L933 BasicCegarLoop]: 92 mSDtfsCounter, 51 mSDsluCounter, 354 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 446 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-09 22:18:12,364 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 446 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-09 22:18:12,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2022-01-09 22:18:12,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 166. [2022-01-09 22:18:12,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 144 states have (on average 1.3888888888888888) internal successors, (200), 147 states have internal predecessors, (200), 17 states have call successors, (17), 3 states have call predecessors, (17), 4 states have return successors, (22), 19 states have call predecessors, (22), 16 states have call successors, (22) [2022-01-09 22:18:12,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 239 transitions. [2022-01-09 22:18:12,396 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 239 transitions. Word has length 40 [2022-01-09 22:18:12,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 22:18:12,396 INFO L470 AbstractCegarLoop]: Abstraction has 166 states and 239 transitions. [2022-01-09 22:18:12,396 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 5 states have internal predecessors, (29), 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) [2022-01-09 22:18:12,396 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 239 transitions. [2022-01-09 22:18:12,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-01-09 22:18:12,397 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 22:18:12,397 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] [2022-01-09 22:18:12,398 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-09 22:18:12,398 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 22:18:12,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 22:18:12,398 INFO L85 PathProgramCache]: Analyzing trace with hash -596359616, now seen corresponding path program 1 times [2022-01-09 22:18:12,398 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 22:18:12,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471468174] [2022-01-09 22:18:12,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 22:18:12,399 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 22:18:12,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 22:18:12,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-01-09 22:18:12,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 22:18:12,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-01-09 22:18:12,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 22:18:12,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-01-09 22:18:12,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 22:18:12,529 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-09 22:18:12,529 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 22:18:12,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471468174] [2022-01-09 22:18:12,530 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471468174] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-09 22:18:12,530 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-09 22:18:12,530 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-09 22:18:12,530 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181106381] [2022-01-09 22:18:12,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-09 22:18:12,534 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-09 22:18:12,537 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 22:18:12,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-09 22:18:12,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-09 22:18:12,538 INFO L87 Difference]: Start difference. First operand 166 states and 239 transitions. Second operand has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 6 states have internal predecessors, (29), 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) [2022-01-09 22:18:12,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 22:18:12,633 INFO L93 Difference]: Finished difference Result 216 states and 311 transitions. [2022-01-09 22:18:12,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-09 22:18:12,634 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 6 states have internal predecessors, (29), 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 40 [2022-01-09 22:18:12,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 22:18:12,635 INFO L225 Difference]: With dead ends: 216 [2022-01-09 22:18:12,635 INFO L226 Difference]: Without dead ends: 161 [2022-01-09 22:18:12,636 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-01-09 22:18:12,636 INFO L933 BasicCegarLoop]: 88 mSDtfsCounter, 70 mSDsluCounter, 432 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 520 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-09 22:18:12,637 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [70 Valid, 520 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-09 22:18:12,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2022-01-09 22:18:12,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 157. [2022-01-09 22:18:12,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 137 states have (on average 1.364963503649635) internal successors, (187), 140 states have internal predecessors, (187), 15 states have call successors, (15), 3 states have call predecessors, (15), 4 states have return successors, (20), 17 states have call predecessors, (20), 14 states have call successors, (20) [2022-01-09 22:18:12,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 222 transitions. [2022-01-09 22:18:12,651 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 222 transitions. Word has length 40 [2022-01-09 22:18:12,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 22:18:12,655 INFO L470 AbstractCegarLoop]: Abstraction has 157 states and 222 transitions. [2022-01-09 22:18:12,655 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 6 states have internal predecessors, (29), 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) [2022-01-09 22:18:12,656 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 222 transitions. [2022-01-09 22:18:12,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-01-09 22:18:12,660 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 22:18:12,660 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] [2022-01-09 22:18:12,660 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-09 22:18:12,660 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 22:18:12,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 22:18:12,661 INFO L85 PathProgramCache]: Analyzing trace with hash -2082074321, now seen corresponding path program 1 times [2022-01-09 22:18:12,661 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 22:18:12,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010937557] [2022-01-09 22:18:12,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 22:18:12,661 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 22:18:12,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 22:18:12,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-01-09 22:18:12,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 22:18:12,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-01-09 22:18:12,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 22:18:12,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-01-09 22:18:12,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 22:18:12,727 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-01-09 22:18:12,727 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 22:18:12,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010937557] [2022-01-09 22:18:12,730 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010937557] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-09 22:18:12,730 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-09 22:18:12,730 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-09 22:18:12,730 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707389688] [2022-01-09 22:18:12,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-09 22:18:12,730 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-09 22:18:12,730 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 22:18:12,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-09 22:18:12,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-09 22:18:12,731 INFO L87 Difference]: Start difference. First operand 157 states and 222 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) [2022-01-09 22:18:12,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 22:18:12,754 INFO L93 Difference]: Finished difference Result 205 states and 294 transitions. [2022-01-09 22:18:12,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-09 22:18:12,754 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 [2022-01-09 22:18:12,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 22:18:12,757 INFO L225 Difference]: With dead ends: 205 [2022-01-09 22:18:12,757 INFO L226 Difference]: Without dead ends: 163 [2022-01-09 22:18:12,757 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-09 22:18:12,758 INFO L933 BasicCegarLoop]: 106 mSDtfsCounter, 48 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 296 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-09 22:18:12,758 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [48 Valid, 296 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-09 22:18:12,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2022-01-09 22:18:12,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 137. [2022-01-09 22:18:12,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 121 states have (on average 1.322314049586777) internal successors, (160), 122 states have internal predecessors, (160), 11 states have call successors, (11), 3 states have call predecessors, (11), 4 states have return successors, (16), 13 states have call predecessors, (16), 10 states have call successors, (16) [2022-01-09 22:18:12,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 187 transitions. [2022-01-09 22:18:12,771 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 187 transitions. Word has length 43 [2022-01-09 22:18:12,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 22:18:12,772 INFO L470 AbstractCegarLoop]: Abstraction has 137 states and 187 transitions. [2022-01-09 22:18:12,772 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) [2022-01-09 22:18:12,772 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 187 transitions. [2022-01-09 22:18:12,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-01-09 22:18:12,773 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 22:18:12,773 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] [2022-01-09 22:18:12,773 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-09 22:18:12,773 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 22:18:12,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 22:18:12,773 INFO L85 PathProgramCache]: Analyzing trace with hash 1563397194, now seen corresponding path program 1 times [2022-01-09 22:18:12,774 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 22:18:12,774 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546876279] [2022-01-09 22:18:12,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 22:18:12,774 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 22:18:12,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 22:18:12,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-01-09 22:18:12,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 22:18:12,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-01-09 22:18:12,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 22:18:12,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-01-09 22:18:12,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 22:18:12,831 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-01-09 22:18:12,831 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 22:18:12,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546876279] [2022-01-09 22:18:12,832 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546876279] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-09 22:18:12,832 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-09 22:18:12,832 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-09 22:18:12,832 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928935676] [2022-01-09 22:18:12,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-09 22:18:12,833 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-09 22:18:12,833 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 22:18:12,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-09 22:18:12,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-09 22:18:12,833 INFO L87 Difference]: Start difference. First operand 137 states and 187 transitions. Second operand has 4 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) [2022-01-09 22:18:12,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 22:18:12,854 INFO L93 Difference]: Finished difference Result 154 states and 208 transitions. [2022-01-09 22:18:12,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-09 22:18:12,855 INFO L78 Accepts]: Start accepts. Automaton has has 4 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 [2022-01-09 22:18:12,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 22:18:12,856 INFO L225 Difference]: With dead ends: 154 [2022-01-09 22:18:12,856 INFO L226 Difference]: Without dead ends: 147 [2022-01-09 22:18:12,856 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-09 22:18:12,857 INFO L933 BasicCegarLoop]: 106 mSDtfsCounter, 17 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 297 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-09 22:18:12,857 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 297 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-09 22:18:12,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2022-01-09 22:18:12,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 141. [2022-01-09 22:18:12,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 125 states have (on average 1.312) internal successors, (164), 126 states have internal predecessors, (164), 11 states have call successors, (11), 3 states have call predecessors, (11), 4 states have return successors, (16), 13 states have call predecessors, (16), 10 states have call successors, (16) [2022-01-09 22:18:12,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 191 transitions. [2022-01-09 22:18:12,866 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 191 transitions. Word has length 44 [2022-01-09 22:18:12,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 22:18:12,866 INFO L470 AbstractCegarLoop]: Abstraction has 141 states and 191 transitions. [2022-01-09 22:18:12,866 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 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) [2022-01-09 22:18:12,866 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 191 transitions. [2022-01-09 22:18:12,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-01-09 22:18:12,867 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 22:18:12,867 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] [2022-01-09 22:18:12,867 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-09 22:18:12,867 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 22:18:12,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 22:18:12,868 INFO L85 PathProgramCache]: Analyzing trace with hash -956562740, now seen corresponding path program 1 times [2022-01-09 22:18:12,868 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 22:18:12,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601122832] [2022-01-09 22:18:12,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 22:18:12,868 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 22:18:12,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 22:18:12,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-01-09 22:18:12,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 22:18:12,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-01-09 22:18:12,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 22:18:12,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-01-09 22:18:12,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 22:18:12,903 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-01-09 22:18:12,903 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 22:18:12,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601122832] [2022-01-09 22:18:12,903 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601122832] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-09 22:18:12,904 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-09 22:18:12,904 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-09 22:18:12,904 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873374576] [2022-01-09 22:18:12,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-09 22:18:12,904 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-09 22:18:12,904 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 22:18:12,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-09 22:18:12,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-09 22:18:12,905 INFO L87 Difference]: Start difference. First operand 141 states and 191 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) [2022-01-09 22:18:12,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 22:18:12,924 INFO L93 Difference]: Finished difference Result 148 states and 197 transitions. [2022-01-09 22:18:12,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-09 22:18:12,924 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 [2022-01-09 22:18:12,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 22:18:12,925 INFO L225 Difference]: With dead ends: 148 [2022-01-09 22:18:12,925 INFO L226 Difference]: Without dead ends: 141 [2022-01-09 22:18:12,926 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-09 22:18:12,926 INFO L933 BasicCegarLoop]: 100 mSDtfsCounter, 5 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 385 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-09 22:18:12,926 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 385 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-09 22:18:12,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2022-01-09 22:18:12,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 137. [2022-01-09 22:18:12,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 121 states have (on average 1.2975206611570247) internal successors, (157), 122 states have internal predecessors, (157), 11 states have call successors, (11), 3 states have call predecessors, (11), 4 states have return successors, (16), 13 states have call predecessors, (16), 10 states have call successors, (16) [2022-01-09 22:18:12,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 184 transitions. [2022-01-09 22:18:12,934 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 184 transitions. Word has length 44 [2022-01-09 22:18:12,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 22:18:12,934 INFO L470 AbstractCegarLoop]: Abstraction has 137 states and 184 transitions. [2022-01-09 22:18:12,934 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) [2022-01-09 22:18:12,934 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 184 transitions. [2022-01-09 22:18:12,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-01-09 22:18:12,935 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 22:18:12,935 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] [2022-01-09 22:18:12,935 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-09 22:18:12,935 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 22:18:12,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 22:18:12,936 INFO L85 PathProgramCache]: Analyzing trace with hash -261265623, now seen corresponding path program 2 times [2022-01-09 22:18:12,936 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 22:18:12,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660167215] [2022-01-09 22:18:12,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 22:18:12,936 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 22:18:12,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-09 22:18:12,970 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-01-09 22:18:12,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-09 22:18:13,016 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-01-09 22:18:13,016 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-01-09 22:18:13,017 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-01-09 22:18:13,018 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-09 22:18:13,021 INFO L732 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1] [2022-01-09 22:18:13,026 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2022-01-09 22:18:13,070 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.01 10:18:13 BoogieIcfgContainer [2022-01-09 22:18:13,070 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-09 22:18:13,070 INFO L158 Benchmark]: Toolchain (without parser) took 5019.04ms. Allocated memory was 188.7MB in the beginning and 234.9MB in the end (delta: 46.1MB). Free memory was 131.9MB in the beginning and 192.5MB in the end (delta: -60.6MB). There was no memory consumed. Max. memory is 8.0GB. [2022-01-09 22:18:13,070 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 188.7MB. Free memory is still 148.9MB. There was no memory consumed. Max. memory is 8.0GB. [2022-01-09 22:18:13,071 INFO L158 Benchmark]: CACSL2BoogieTranslator took 330.42ms. Allocated memory was 188.7MB in the beginning and 234.9MB in the end (delta: 46.1MB). Free memory was 131.8MB in the beginning and 203.7MB in the end (delta: -71.9MB). Peak memory consumption was 11.2MB. Max. memory is 8.0GB. [2022-01-09 22:18:13,071 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.90ms. Allocated memory is still 234.9MB. Free memory was 203.7MB in the beginning and 202.1MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-01-09 22:18:13,071 INFO L158 Benchmark]: Boogie Preprocessor took 21.40ms. Allocated memory is still 234.9MB. Free memory was 202.1MB in the beginning and 200.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-01-09 22:18:13,071 INFO L158 Benchmark]: RCFGBuilder took 465.49ms. Allocated memory is still 234.9MB. Free memory was 200.5MB in the beginning and 184.8MB in the end (delta: 15.7MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. [2022-01-09 22:18:13,072 INFO L158 Benchmark]: TraceAbstraction took 4152.98ms. Allocated memory is still 234.9MB. Free memory was 184.3MB in the beginning and 192.5MB in the end (delta: -8.2MB). There was no memory consumed. Max. memory is 8.0GB. [2022-01-09 22:18:13,073 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 188.7MB. Free memory is still 148.9MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 330.42ms. Allocated memory was 188.7MB in the beginning and 234.9MB in the end (delta: 46.1MB). Free memory was 131.8MB in the beginning and 203.7MB in the end (delta: -71.9MB). Peak memory consumption was 11.2MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 36.90ms. Allocated memory is still 234.9MB. Free memory was 203.7MB in the beginning and 202.1MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 21.40ms. Allocated memory is still 234.9MB. Free memory was 202.1MB in the beginning and 200.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 465.49ms. Allocated memory is still 234.9MB. Free memory was 200.5MB in the beginning and 184.8MB in the end (delta: 15.7MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. * TraceAbstraction took 4152.98ms. Allocated memory is still 234.9MB. Free memory was 184.3MB in the beginning and 192.5MB in the end (delta: -8.2MB). 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 - UnprovableResult [Line: 18]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseOr at line 111, overapproximation of bitwiseAnd at line 109. Possible FailurePath: [L227] unsigned int a ; [L228] unsigned int ma = __VERIFIER_nondet_uint(); [L229] signed char ea = __VERIFIER_nondet_char(); [L230] unsigned int b ; [L231] unsigned int mb = __VERIFIER_nondet_uint(); [L232] signed char eb = __VERIFIER_nondet_char(); [L233] unsigned int r_add ; [L234] unsigned int zero ; [L235] int sa ; [L236] int sb ; [L237] int tmp ; [L238] int tmp___0 ; [L239] int tmp___1 ; [L240] int tmp___2 ; [L241] int tmp___3 ; [L242] int tmp___4 ; [L243] int tmp___5 ; [L244] int tmp___6 ; [L245] int tmp___7 ; [L246] int tmp___8 ; [L247] int tmp___9 ; [L248] int __retres23 ; VAL [ea=0, eb=0] [L252] CALL, EXPR base2flt(0, 0) VAL [\old(e)=0, \old(m)=0] [L26] unsigned int res ; [L27] unsigned int __retres4 ; VAL [\old(e)=0, \old(m)=0, e=0, m=0] [L30] COND TRUE ! m [L31] __retres4 = 0U VAL [\old(e)=0, \old(m)=0, __retres4=0, e=0, m=0] [L81] return (__retres4); VAL [\old(e)=0, \old(m)=0, \result=0, __retres4=0, e=0, m=0] [L252] RET, EXPR base2flt(0, 0) VAL [base2flt(0, 0)=0, ea=0, eb=0] [L252] zero = base2flt(0, 0) [L253] CALL, EXPR base2flt(ma, ea) VAL [\old(e)=0, \old(m)=16777216] [L26] unsigned int res ; [L27] unsigned int __retres4 ; VAL [\old(e)=0, \old(m)=16777216, e=0, m=16777216] [L30] COND FALSE !(! m) VAL [\old(e)=0, \old(m)=16777216, e=0, m=16777216] [L36] COND FALSE !(m < 1U << 24U) VAL [\old(e)=0, \old(m)=16777216, e=0, m=16777216] [L58] COND TRUE 1 VAL [\old(e)=0, \old(m)=16777216, e=0, m=16777216] [L60] COND FALSE !(m >= 1U << 25U) VAL [\old(e)=0, \old(m)=16777216, e=0, m=16777216] [L77] m = m & ~ (1U << 24U) [L78] res = m | ((unsigned int ) (e + 128) << 24U) [L79] __retres4 = res VAL [\old(e)=0, \old(m)=16777216, __retres4=16777215, e=0, res=16777215] [L81] return (__retres4); VAL [\old(e)=0, \old(m)=16777216, \result=-72057589726183425, __retres4=16777215, e=0, res=16777215] [L253] RET, EXPR base2flt(ma, ea) VAL [base2flt(ma, ea)=-72057589726183425, ea=0, eb=0, ma=16777216, zero=0] [L253] a = base2flt(ma, ea) [L254] CALL, EXPR base2flt(mb, eb) VAL [\old(e)=0, \old(m)=16777216] [L26] unsigned int res ; [L27] unsigned int __retres4 ; VAL [\old(e)=0, \old(m)=16777216, e=0, m=16777216] [L30] COND FALSE !(! m) VAL [\old(e)=0, \old(m)=16777216, e=0, m=16777216] [L36] COND FALSE !(m < 1U << 24U) VAL [\old(e)=0, \old(m)=16777216, e=0, m=16777216] [L58] COND TRUE 1 VAL [\old(e)=0, \old(m)=16777216, e=0, m=16777216] [L60] COND FALSE !(m >= 1U << 25U) VAL [\old(e)=0, \old(m)=16777216, e=0, m=16777216] [L77] m = m & ~ (1U << 24U) [L78] res = m | ((unsigned int ) (e + 128) << 24U) [L79] __retres4 = res VAL [\old(e)=0, \old(m)=16777216, __retres4=4294967295, e=0, res=4294967295] [L81] return (__retres4); VAL [\old(e)=0, \old(m)=16777216, \result=-72057589742960641, __retres4=4294967295, e=0, res=4294967295] [L254] RET, EXPR base2flt(mb, eb) VAL [a=16777215, base2flt(mb, eb)=-72057589742960641, ea=0, eb=0, ma=16777216, mb=16777216, zero=0] [L254] b = base2flt(mb, eb) [L256] COND FALSE !(a < zero) VAL [a=16777215, b=4294967295, ea=0, eb=0, ma=16777216, mb=16777216, zero=0] [L259] COND TRUE a > zero [L260] tmp = 1 VAL [a=16777215, b=4294967295, ea=0, eb=0, ma=16777216, mb=16777216, tmp=1, zero=0] [L264] sa = tmp VAL [a=16777215, b=4294967295, ea=0, eb=0, ma=16777216, mb=16777216, sa=1, tmp=1, zero=0] [L266] COND FALSE !(b < zero) VAL [a=16777215, b=4294967295, ea=0, eb=0, ma=16777216, mb=16777216, sa=1, tmp=1, zero=0] [L269] COND TRUE b > zero [L270] tmp___0 = 1 VAL [a=16777215, b=4294967295, ea=0, eb=0, ma=16777216, mb=16777216, sa=1, tmp=1, tmp___0=1, zero=0] [L274] sb = tmp___0 VAL [a=16777215, b=4294967295, ea=0, eb=0, ma=16777216, mb=16777216, sa=1, sb=1, tmp=1, tmp___0=1, zero=0] [L277] CALL addflt(a, b) [L85] unsigned int res ; [L86] unsigned int ma ; [L87] unsigned int mb ; [L88] unsigned int delta ; [L89] int ea ; [L90] int eb ; [L91] unsigned int tmp ; [L92] unsigned int __retres10 ; VAL [\old(a)=16777215, \old(b)=4294967295, a=16777215, b=4294967295] [L95] COND TRUE a < b [L96] tmp = a [L97] a = b [L98] b = tmp VAL [\old(a)=16777215, \old(b)=4294967295, a=4294967295, b=16777215, tmp=16777215] [L102] COND FALSE !(! b) [L109] ma = a & ((1U << 24U) - 1U) [L110] ea = (int )(a >> 24U) - 128 [L111] ma = ma | (1U << 24U) [L112] mb = b & ((1U << 24U) - 1U) [L113] eb = (int )(b >> 24U) - 128 [L114] mb = mb | (1U << 24U) VAL [\old(a)=16777215, \old(b)=4294967295, a=4294967295, b=16777215, ea=127, eb=128, tmp=16777215] [L115] CALL __VERIFIER_assert(ea >= eb) VAL [\old(cond)=0] [L17] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L18] 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: 4.1s, OverallIterations: 8, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 849 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 838 mSDsluCounter, 4828 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4049 mSDsCounter, 99 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 998 IncrementalHoareTripleChecker+Invalid, 1097 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 99 mSolverCounterUnsat, 779 mSDtfsCounter, 998 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 249 GetRequests, 172 SyntacticMatches, 2 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=166occurred in iteration=3, InterpolantAutomatonStates: 64, 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, 7 MinimizatonAttempts, 216 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 391 NumberOfCodeBlocks, 391 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 404 ConstructedInterpolants, 0 QuantifiedInterpolants, 827 SizeOfPredicates, 11 NumberOfNonLiveVariables, 256 ConjunctsInSsa, 53 ConjunctsInUnsatCore, 11 InterpolantComputations, 5 PerfectInterpolantSequences, 128/165 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-01-09 22:18:13,084 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...