/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/num_conversion_1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-09 22:17:51,833 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-09 22:17:51,835 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-09 22:17:51,876 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-09 22:17:51,939 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-09 22:17:51,940 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-09 22:17:51,940 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-09 22:17:51,941 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 22:17:51,953 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-09 22:17:51,953 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-09 22:17:51,954 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-09 22:17:51,954 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-09 22:17:51,954 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-09 22:17:51,954 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-09 22:17:51,955 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-09 22:17:51,955 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-09 22:17:51,955 INFO L138 SettingsManager]: * Use SBE=true [2022-01-09 22:17:51,955 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-09 22:17:51,955 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-09 22:17:51,955 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-09 22:17:51,955 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-09 22:17:51,955 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-09 22:17:51,956 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-09 22:17:51,956 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-09 22:17:51,956 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-09 22:17:51,956 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-09 22:17:51,956 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-09 22:17:51,956 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-09 22:17:51,956 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-09 22:17:51,956 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-09 22:17:51,957 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-09 22:17:51,957 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-09 22:17:51,957 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-09 22:17:51,957 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-09 22:17:51,957 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-09 22:17:51,957 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-09 22:17:51,957 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-09 22:17:51,957 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-09 22:17:51,957 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-09 22:17:52,093 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-09 22:17:52,108 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-09 22:17:52,110 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-09 22:17:52,111 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-09 22:17:52,111 INFO L275 PluginConnector]: CDTParser initialized [2022-01-09 22:17:52,112 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/bitvector/num_conversion_1.c [2022-01-09 22:17:52,180 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3512c7a76/5c6800f13d3b4226a8278c0c6ce38383/FLAGb77b3600b [2022-01-09 22:17:52,474 INFO L306 CDTParser]: Found 1 translation units. [2022-01-09 22:17:52,474 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/bitvector/num_conversion_1.c [2022-01-09 22:17:52,482 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3512c7a76/5c6800f13d3b4226a8278c0c6ce38383/FLAGb77b3600b [2022-01-09 22:17:52,910 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3512c7a76/5c6800f13d3b4226a8278c0c6ce38383 [2022-01-09 22:17:52,913 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-09 22:17:52,914 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-09 22:17:52,917 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-09 22:17:52,917 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-09 22:17:52,919 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-09 22:17:52,919 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 10:17:52" (1/1) ... [2022-01-09 22:17:52,921 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@fdc2440 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:17:52, skipping insertion in model container [2022-01-09 22:17:52,921 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 10:17:52" (1/1) ... [2022-01-09 22:17:52,925 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-09 22:17:52,933 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-09 22:17:53,024 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/num_conversion_1.c[673,686] [2022-01-09 22:17:53,041 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-09 22:17:53,047 INFO L203 MainTranslator]: Completed pre-run [2022-01-09 22:17:53,059 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/num_conversion_1.c[673,686] [2022-01-09 22:17:53,065 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-09 22:17:53,075 INFO L208 MainTranslator]: Completed translation [2022-01-09 22:17:53,076 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:17:53 WrapperNode [2022-01-09 22:17:53,077 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-09 22:17:53,078 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-09 22:17:53,078 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-09 22:17:53,078 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-09 22:17:53,083 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:17:53" (1/1) ... [2022-01-09 22:17:53,088 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:17:53" (1/1) ... [2022-01-09 22:17:53,105 INFO L137 Inliner]: procedures = 13, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 34 [2022-01-09 22:17:53,106 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-09 22:17:53,106 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-09 22:17:53,106 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-09 22:17:53,106 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-09 22:17:53,111 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:17:53" (1/1) ... [2022-01-09 22:17:53,111 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:17:53" (1/1) ... [2022-01-09 22:17:53,113 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:17:53" (1/1) ... [2022-01-09 22:17:53,113 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:17:53" (1/1) ... [2022-01-09 22:17:53,121 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:17:53" (1/1) ... [2022-01-09 22:17:53,122 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:17:53" (1/1) ... [2022-01-09 22:17:53,123 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:17:53" (1/1) ... [2022-01-09 22:17:53,124 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-09 22:17:53,124 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-09 22:17:53,124 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-09 22:17:53,124 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-09 22:17:53,125 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:17:53" (1/1) ... [2022-01-09 22:17:53,129 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-09 22:17:53,136 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-09 22:17:53,144 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 22:17:53,159 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 22:17:53,185 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-09 22:17:53,186 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-09 22:17:53,186 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-09 22:17:53,186 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-09 22:17:53,221 INFO L234 CfgBuilder]: Building ICFG [2022-01-09 22:17:53,222 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-09 22:17:53,286 INFO L275 CfgBuilder]: Performing block encoding [2022-01-09 22:17:53,289 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-09 22:17:53,290 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-09 22:17:53,291 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 10:17:53 BoogieIcfgContainer [2022-01-09 22:17:53,291 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-09 22:17:53,292 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-09 22:17:53,292 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-09 22:17:53,294 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-09 22:17:53,294 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.01 10:17:52" (1/3) ... [2022-01-09 22:17:53,295 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34f94827 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 10:17:53, skipping insertion in model container [2022-01-09 22:17:53,295 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:17:53" (2/3) ... [2022-01-09 22:17:53,295 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34f94827 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 10:17:53, skipping insertion in model container [2022-01-09 22:17:53,295 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 10:17:53" (3/3) ... [2022-01-09 22:17:53,296 INFO L111 eAbstractionObserver]: Analyzing ICFG num_conversion_1.c [2022-01-09 22:17:53,300 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-09 22:17:53,300 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-09 22:17:53,328 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-09 22:17:53,333 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 22:17:53,333 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-09 22:17:53,341 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 22:17:53,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-01-09 22:17:53,344 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 22:17:53,345 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-01-09 22:17:53,345 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 22:17:53,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 22:17:53,348 INFO L85 PathProgramCache]: Analyzing trace with hash 889968487, now seen corresponding path program 1 times [2022-01-09 22:17:53,354 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 22:17:53,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242743190] [2022-01-09 22:17:53,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 22:17:53,355 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 22:17:53,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 22:17:53,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-09 22:17:53,460 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 22:17:53,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242743190] [2022-01-09 22:17:53,461 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1242743190] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-09 22:17:53,461 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-09 22:17:53,462 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-09 22:17:53,463 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86982576] [2022-01-09 22:17:53,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-09 22:17:53,466 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-09 22:17:53,467 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 22:17:53,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-09 22:17:53,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-09 22:17:53,494 INFO L87 Difference]: Start difference. First operand has 13 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 22:17:53,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 22:17:53,506 INFO L93 Difference]: Finished difference Result 21 states and 24 transitions. [2022-01-09 22:17:53,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-09 22:17:53,508 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-01-09 22:17:53,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 22:17:53,512 INFO L225 Difference]: With dead ends: 21 [2022-01-09 22:17:53,512 INFO L226 Difference]: Without dead ends: 9 [2022-01-09 22:17:53,514 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-09 22:17:53,517 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-09 22:17:53,518 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-09 22:17:53,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2022-01-09 22:17:53,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2022-01-09 22:17:53,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.25) internal successors, (10), 8 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 22:17:53,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2022-01-09 22:17:53,536 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 10 transitions. Word has length 6 [2022-01-09 22:17:53,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 22:17:53,536 INFO L470 AbstractCegarLoop]: Abstraction has 9 states and 10 transitions. [2022-01-09 22:17:53,537 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 22:17:53,537 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 10 transitions. [2022-01-09 22:17:53,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-01-09 22:17:53,537 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 22:17:53,538 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-01-09 22:17:53,538 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-09 22:17:53,539 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 22:17:53,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 22:17:53,541 INFO L85 PathProgramCache]: Analyzing trace with hash 889640786, now seen corresponding path program 1 times [2022-01-09 22:17:53,542 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 22:17:53,542 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616208760] [2022-01-09 22:17:53,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 22:17:53,542 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 22:17:53,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 22:17:53,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-09 22:17:53,623 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 22:17:53,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616208760] [2022-01-09 22:17:53,623 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616208760] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-09 22:17:53,623 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-09 22:17:53,623 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-09 22:17:53,623 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785857833] [2022-01-09 22:17:53,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-09 22:17:53,624 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-09 22:17:53,624 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 22:17:53,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-09 22:17:53,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-09 22:17:53,625 INFO L87 Difference]: Start difference. First operand 9 states and 10 transitions. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 22:17:53,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 22:17:53,635 INFO L93 Difference]: Finished difference Result 16 states and 18 transitions. [2022-01-09 22:17:53,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-09 22:17:53,635 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-01-09 22:17:53,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 22:17:53,636 INFO L225 Difference]: With dead ends: 16 [2022-01-09 22:17:53,636 INFO L226 Difference]: Without dead ends: 12 [2022-01-09 22:17:53,636 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-09 22:17:53,637 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 3 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-09 22:17:53,638 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 14 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-09 22:17:53,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2022-01-09 22:17:53,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 10. [2022-01-09 22:17:53,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 9 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 22:17:53,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2022-01-09 22:17:53,640 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 11 transitions. Word has length 6 [2022-01-09 22:17:53,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 22:17:53,640 INFO L470 AbstractCegarLoop]: Abstraction has 10 states and 11 transitions. [2022-01-09 22:17:53,640 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 22:17:53,640 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2022-01-09 22:17:53,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-01-09 22:17:53,641 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 22:17:53,641 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-09 22:17:53,641 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-09 22:17:53,641 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 22:17:53,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 22:17:53,642 INFO L85 PathProgramCache]: Analyzing trace with hash 641725625, now seen corresponding path program 1 times [2022-01-09 22:17:53,642 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 22:17:53,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539706725] [2022-01-09 22:17:53,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 22:17:53,642 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 22:17:53,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 22:17:53,716 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-09 22:17:53,716 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 22:17:53,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539706725] [2022-01-09 22:17:53,717 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539706725] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-09 22:17:53,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1474259830] [2022-01-09 22:17:53,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 22:17:53,717 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 22:17:53,717 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-09 22:17:53,727 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 22:17:53,728 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 22:17:53,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 22:17:53,776 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-09 22:17:53,779 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-09 22:17:53,870 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-09 22:17:53,870 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-09 22:17:53,942 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-09 22:17:53,943 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1474259830] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-09 22:17:53,943 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-09 22:17:53,943 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 5] total 8 [2022-01-09 22:17:53,943 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088873919] [2022-01-09 22:17:53,943 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-09 22:17:53,944 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-09 22:17:53,944 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 22:17:53,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-09 22:17:53,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2022-01-09 22:17:53,945 INFO L87 Difference]: Start difference. First operand 10 states and 11 transitions. Second operand has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 22:17:54,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 22:17:54,007 INFO L93 Difference]: Finished difference Result 23 states and 29 transitions. [2022-01-09 22:17:54,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-09 22:17:54,008 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-01-09 22:17:54,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 22:17:54,008 INFO L225 Difference]: With dead ends: 23 [2022-01-09 22:17:54,008 INFO L226 Difference]: Without dead ends: 19 [2022-01-09 22:17:54,009 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=39, Unknown=0, NotChecked=0, Total=72 [2022-01-09 22:17:54,010 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 27 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-09 22:17:54,010 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 29 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-09 22:17:54,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-01-09 22:17:54,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2022-01-09 22:17:54,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 18 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 22:17:54,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2022-01-09 22:17:54,013 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 9 [2022-01-09 22:17:54,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 22:17:54,013 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions. [2022-01-09 22:17:54,013 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 22:17:54,014 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2022-01-09 22:17:54,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-09 22:17:54,014 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 22:17:54,014 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1] [2022-01-09 22:17:54,047 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 22:17:54,235 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 22:17:54,235 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 22:17:54,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 22:17:54,236 INFO L85 PathProgramCache]: Analyzing trace with hash 1171899538, now seen corresponding path program 2 times [2022-01-09 22:17:54,236 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 22:17:54,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527369388] [2022-01-09 22:17:54,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 22:17:54,236 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 22:17:54,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 22:17:54,329 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-09 22:17:54,330 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 22:17:54,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527369388] [2022-01-09 22:17:54,330 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527369388] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-09 22:17:54,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1616861262] [2022-01-09 22:17:54,330 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-09 22:17:54,330 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 22:17:54,331 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-09 22:17:54,337 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 22:17:54,355 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 22:17:54,368 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-09 22:17:54,368 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-09 22:17:54,369 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 15 conjunts are in the unsatisfiable core [2022-01-09 22:17:54,370 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-09 22:17:54,437 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-09 22:17:54,437 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-09 22:17:54,636 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-09 22:17:54,636 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1616861262] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-09 22:17:54,636 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-09 22:17:54,636 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 8] total 17 [2022-01-09 22:17:54,636 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612678521] [2022-01-09 22:17:54,636 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-09 22:17:54,637 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-01-09 22:17:54,637 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 22:17:54,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-01-09 22:17:54,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=177, Unknown=0, NotChecked=0, Total=272 [2022-01-09 22:17:54,638 INFO L87 Difference]: Start difference. First operand 19 states and 23 transitions. Second operand has 17 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 17 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 22:17:54,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 22:17:54,892 INFO L93 Difference]: Finished difference Result 41 states and 56 transitions. [2022-01-09 22:17:54,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-09 22:17:54,893 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 17 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-01-09 22:17:54,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 22:17:54,893 INFO L225 Difference]: With dead ends: 41 [2022-01-09 22:17:54,893 INFO L226 Difference]: Without dead ends: 37 [2022-01-09 22:17:54,894 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 23 SyntacticMatches, 3 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=167, Invalid=295, Unknown=0, NotChecked=0, Total=462 [2022-01-09 22:17:54,895 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 68 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-09 22:17:54,896 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [68 Valid, 96 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-09 22:17:54,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2022-01-09 22:17:54,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2022-01-09 22:17:54,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 36 states have (on average 1.3333333333333333) internal successors, (48), 36 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 22:17:54,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 48 transitions. [2022-01-09 22:17:54,901 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 48 transitions. Word has length 18 [2022-01-09 22:17:54,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 22:17:54,901 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 48 transitions. [2022-01-09 22:17:54,901 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 17 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 22:17:54,901 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 48 transitions. [2022-01-09 22:17:54,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-09 22:17:54,902 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 22:17:54,902 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1] [2022-01-09 22:17:54,922 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-01-09 22:17:55,118 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,SelfDestructingSolverStorable3 [2022-01-09 22:17:55,118 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 22:17:55,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 22:17:55,119 INFO L85 PathProgramCache]: Analyzing trace with hash -1720528430, now seen corresponding path program 3 times [2022-01-09 22:17:55,119 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 22:17:55,119 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095471796] [2022-01-09 22:17:55,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 22:17:55,120 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 22:17:55,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-09 22:17:55,158 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-01-09 22:17:55,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-09 22:17:55,187 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-01-09 22:17:55,187 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-01-09 22:17:55,192 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-01-09 22:17:55,194 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-09 22:17:55,200 INFO L732 BasicCegarLoop]: Path program histogram: [3, 1, 1] [2022-01-09 22:17:55,201 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2022-01-09 22:17:55,237 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.01 10:17:55 BoogieIcfgContainer [2022-01-09 22:17:55,237 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-09 22:17:55,238 INFO L158 Benchmark]: Toolchain (without parser) took 2323.39ms. Allocated memory was 181.4MB in the beginning and 240.1MB in the end (delta: 58.7MB). Free memory was 126.3MB in the beginning and 107.3MB in the end (delta: 19.0MB). Peak memory consumption was 78.1MB. Max. memory is 8.0GB. [2022-01-09 22:17:55,238 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 181.4MB. Free memory is still 142.5MB. There was no memory consumed. Max. memory is 8.0GB. [2022-01-09 22:17:55,238 INFO L158 Benchmark]: CACSL2BoogieTranslator took 160.43ms. Allocated memory was 181.4MB in the beginning and 240.1MB in the end (delta: 58.7MB). Free memory was 126.1MB in the beginning and 213.2MB in the end (delta: -87.1MB). Peak memory consumption was 9.9MB. Max. memory is 8.0GB. [2022-01-09 22:17:55,238 INFO L158 Benchmark]: Boogie Procedure Inliner took 28.16ms. Allocated memory is still 240.1MB. Free memory was 213.2MB in the beginning and 211.7MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-01-09 22:17:55,239 INFO L158 Benchmark]: Boogie Preprocessor took 17.55ms. Allocated memory is still 240.1MB. Free memory was 211.7MB in the beginning and 210.8MB in the end (delta: 844.0kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-01-09 22:17:55,239 INFO L158 Benchmark]: RCFGBuilder took 166.60ms. Allocated memory is still 240.1MB. Free memory was 210.6MB in the beginning and 201.2MB in the end (delta: 9.4MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2022-01-09 22:17:55,239 INFO L158 Benchmark]: TraceAbstraction took 1945.53ms. Allocated memory is still 240.1MB. Free memory was 201.2MB in the beginning and 107.3MB in the end (delta: 93.8MB). Peak memory consumption was 94.4MB. Max. memory is 8.0GB. [2022-01-09 22:17:55,240 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 181.4MB. Free memory is still 142.5MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 160.43ms. Allocated memory was 181.4MB in the beginning and 240.1MB in the end (delta: 58.7MB). Free memory was 126.1MB in the beginning and 213.2MB in the end (delta: -87.1MB). Peak memory consumption was 9.9MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 28.16ms. Allocated memory is still 240.1MB. Free memory was 213.2MB in the beginning and 211.7MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 17.55ms. Allocated memory is still 240.1MB. Free memory was 211.7MB in the beginning and 210.8MB in the end (delta: 844.0kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 166.60ms. Allocated memory is still 240.1MB. Free memory was 210.6MB in the beginning and 201.2MB in the end (delta: 9.4MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * TraceAbstraction took 1945.53ms. Allocated memory is still 240.1MB. Free memory was 201.2MB in the beginning and 107.3MB in the end (delta: 93.8MB). Peak memory consumption was 94.4MB. 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: 16]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of shiftLeft at line 32, overapproximation of bitwiseAnd at line 33. Possible FailurePath: [L24] unsigned char x; [L25] unsigned char y; [L26] unsigned char c; [L28] x = 37 [L29] y = 0 [L30] c = 0 VAL [c=0, x=37, y=0] [L31] COND TRUE c < (unsigned char)8 [L32] unsigned char i = ((unsigned char)1) << c; [L33] unsigned char bit = x & i; VAL [c=0, x=37, y=0] [L34] COND FALSE !(bit != (unsigned char)0) VAL [bit=0, c=0, x=37, y=0] [L37] c = c + ((unsigned char)1) VAL [bit=0, c=1, x=37, y=0] [L31] COND TRUE c < (unsigned char)8 [L32] unsigned char i = ((unsigned char)1) << c; [L33] unsigned char bit = x & i; VAL [c=1, x=37, y=0] [L34] COND FALSE !(bit != (unsigned char)0) VAL [bit=0, c=1, x=37, y=0] [L37] c = c + ((unsigned char)1) VAL [bit=0, c=2, x=37, y=0] [L31] COND TRUE c < (unsigned char)8 [L32] unsigned char i = ((unsigned char)1) << c; [L33] unsigned char bit = x & i; VAL [c=2, x=37, y=0] [L34] COND FALSE !(bit != (unsigned char)0) VAL [bit=0, c=2, x=37, y=0] [L37] c = c + ((unsigned char)1) VAL [bit=0, c=3, x=37, y=0] [L31] COND TRUE c < (unsigned char)8 [L32] unsigned char i = ((unsigned char)1) << c; [L33] unsigned char bit = x & i; VAL [c=3, x=37, y=0] [L34] COND FALSE !(bit != (unsigned char)0) VAL [bit=0, c=3, x=37, y=0] [L37] c = c + ((unsigned char)1) VAL [bit=0, c=4, x=37, y=0] [L31] COND TRUE c < (unsigned char)8 [L32] unsigned char i = ((unsigned char)1) << c; [L33] unsigned char bit = x & i; VAL [c=4, x=37, y=0] [L34] COND FALSE !(bit != (unsigned char)0) VAL [bit=0, c=4, x=37, y=0] [L37] c = c + ((unsigned char)1) VAL [bit=0, c=5, x=37, y=0] [L31] COND TRUE c < (unsigned char)8 [L32] unsigned char i = ((unsigned char)1) << c; [L33] unsigned char bit = x & i; VAL [c=5, x=37, y=0] [L34] COND FALSE !(bit != (unsigned char)0) VAL [bit=0, c=5, x=37, y=0] [L37] c = c + ((unsigned char)1) VAL [bit=0, c=6, x=37, y=0] [L31] COND TRUE c < (unsigned char)8 [L32] unsigned char i = ((unsigned char)1) << c; [L33] unsigned char bit = x & i; VAL [c=6, x=37, y=0] [L34] COND FALSE !(bit != (unsigned char)0) VAL [bit=0, c=6, x=37, y=0] [L37] c = c + ((unsigned char)1) VAL [bit=0, c=7, x=37, y=0] [L31] COND TRUE c < (unsigned char)8 [L32] unsigned char i = ((unsigned char)1) << c; [L33] unsigned char bit = x & i; VAL [c=7, x=37, y=0] [L34] COND FALSE !(bit != (unsigned char)0) VAL [bit=0, c=7, x=37, y=0] [L37] c = c + ((unsigned char)1) VAL [bit=0, c=8, x=37, y=0] [L31] COND FALSE !(c < (unsigned char)8) VAL [bit=0, c=8, x=37, y=0] [L39] CALL __VERIFIER_assert(x == y) [L15] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L16] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.9s, OverallIterations: 5, TraceHistogramMax: 8, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 98 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 98 mSDsluCounter, 153 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 106 mSDsCounter, 33 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 104 IncrementalHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 33 mSolverCounterUnsat, 47 mSDtfsCounter, 104 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 72 GetRequests, 41 SyntacticMatches, 3 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37occurred in iteration=4, InterpolantAutomatonStates: 26, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 96 NumberOfCodeBlocks, 96 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 85 ConstructedInterpolants, 0 QuantifiedInterpolants, 606 SizeOfPredicates, 3 NumberOfNonLiveVariables, 103 ConjunctsInSsa, 23 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 0/69 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 22:17:55,251 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...