/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf -i ../../../trunk/examples/svcomp/loop-industry-pattern/mod3.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05ce600 [2022-02-24 01:31:53,954 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-24 01:31:53,956 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-24 01:31:54,013 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-02-24 01:31:54,050 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf [2022-02-24 01:31:54,056 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-24 01:31:54,056 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-24 01:31:54,057 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-24 01:31:54,057 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-24 01:31:54,057 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-24 01:31:54,057 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-24 01:31:54,058 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-24 01:31:54,058 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-24 01:31:54,058 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-24 01:31:54,058 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-24 01:31:54,058 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-24 01:31:54,058 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-24 01:31:54,058 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-24 01:31:54,058 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-24 01:31:54,059 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-24 01:31:54,059 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-24 01:31:54,059 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-24 01:31:54,059 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-24 01:31:54,059 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-24 01:31:54,059 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-24 01:31:54,059 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2022-02-24 01:31:54,060 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-24 01:31:54,060 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2022-02-24 01:31:54,060 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-02-24 01:31:54,228 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-24 01:31:54,241 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-24 01:31:54,242 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-24 01:31:54,243 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-24 01:31:54,248 INFO L275 PluginConnector]: CDTParser initialized [2022-02-24 01:31:54,249 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-industry-pattern/mod3.c.v+cfa-reducer.c [2022-02-24 01:31:54,296 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b47676a69/2fa3a7e70f6c4ced992d2016a3eb3ef4/FLAG57082091a [2022-02-24 01:31:54,588 INFO L306 CDTParser]: Found 1 translation units. [2022-02-24 01:31:54,588 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-industry-pattern/mod3.c.v+cfa-reducer.c [2022-02-24 01:31:54,599 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b47676a69/2fa3a7e70f6c4ced992d2016a3eb3ef4/FLAG57082091a [2022-02-24 01:31:55,038 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b47676a69/2fa3a7e70f6c4ced992d2016a3eb3ef4 [2022-02-24 01:31:55,042 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-24 01:31:55,045 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-02-24 01:31:55,060 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-24 01:31:55,060 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-24 01:31:55,063 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-24 01:31:55,063 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 01:31:55" (1/1) ... [2022-02-24 01:31:55,064 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1218d345 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 01:31:55, skipping insertion in model container [2022-02-24 01:31:55,064 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 01:31:55" (1/1) ... [2022-02-24 01:31:55,069 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-24 01:31:55,080 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-24 01:31:55,182 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-industry-pattern/mod3.c.v+cfa-reducer.c[1250,1263] [2022-02-24 01:31:55,192 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-24 01:31:55,198 INFO L203 MainTranslator]: Completed pre-run [2022-02-24 01:31:55,209 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-industry-pattern/mod3.c.v+cfa-reducer.c[1250,1263] [2022-02-24 01:31:55,210 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-24 01:31:55,218 INFO L208 MainTranslator]: Completed translation [2022-02-24 01:31:55,218 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 01:31:55 WrapperNode [2022-02-24 01:31:55,218 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-24 01:31:55,219 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-24 01:31:55,219 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-24 01:31:55,219 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-24 01:31:55,225 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 01:31:55" (1/1) ... [2022-02-24 01:31:55,225 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 01:31:55" (1/1) ... [2022-02-24 01:31:55,229 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 01:31:55" (1/1) ... [2022-02-24 01:31:55,229 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 01:31:55" (1/1) ... [2022-02-24 01:31:55,232 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 01:31:55" (1/1) ... [2022-02-24 01:31:55,233 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 01:31:55" (1/1) ... [2022-02-24 01:31:55,233 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 01:31:55" (1/1) ... [2022-02-24 01:31:55,234 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-24 01:31:55,235 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-24 01:31:55,235 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-24 01:31:55,235 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-24 01:31:55,236 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 01:31:55" (1/1) ... [2022-02-24 01:31:55,240 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-24 01:31:55,246 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-24 01:31:55,255 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) [2022-02-24 01:31:55,261 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 [2022-02-24 01:31:55,285 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-02-24 01:31:55,286 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-24 01:31:55,286 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-02-24 01:31:55,286 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-02-24 01:31:55,286 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-02-24 01:31:55,286 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-02-24 01:31:55,286 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-02-24 01:31:55,286 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-24 01:31:55,286 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-02-24 01:31:55,286 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-02-24 01:31:55,286 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-02-24 01:31:55,286 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-02-24 01:31:55,286 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-24 01:31:55,287 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-24 01:31:55,287 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-02-24 01:31:55,287 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-02-24 01:31:55,287 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-02-24 01:31:55,330 INFO L234 CfgBuilder]: Building ICFG [2022-02-24 01:31:55,331 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-24 01:31:59,755 INFO L275 CfgBuilder]: Performing block encoding [2022-02-24 01:31:59,759 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-24 01:31:59,759 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-02-24 01:31:59,760 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 01:31:59 BoogieIcfgContainer [2022-02-24 01:31:59,760 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-24 01:31:59,761 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-24 01:31:59,761 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-24 01:31:59,763 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-24 01:31:59,764 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.02 01:31:55" (1/3) ... [2022-02-24 01:31:59,764 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23042e69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 01:31:59, skipping insertion in model container [2022-02-24 01:31:59,764 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 01:31:55" (2/3) ... [2022-02-24 01:31:59,764 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23042e69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 01:31:59, skipping insertion in model container [2022-02-24 01:31:59,764 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 01:31:59" (3/3) ... [2022-02-24 01:31:59,765 INFO L111 eAbstractionObserver]: Analyzing ICFG mod3.c.v+cfa-reducer.c [2022-02-24 01:31:59,768 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-02-24 01:31:59,768 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-24 01:31:59,796 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-24 01:31:59,801 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=AcceleratedInterpolation, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=JORDAN [2022-02-24 01:31:59,801 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-02-24 01:31:59,812 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 14 states have internal predecessors, (20), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-02-24 01:31:59,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-02-24 01:31:59,817 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:31:59,817 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:31:59,818 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:31:59,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:31:59,821 INFO L85 PathProgramCache]: Analyzing trace with hash 1410293457, now seen corresponding path program 1 times [2022-02-24 01:31:59,826 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:31:59,826 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [565500136] [2022-02-24 01:31:59,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:31:59,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:31:59,869 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 01:31:59,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:32:00,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:32:00,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:32:00,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:32:00,016 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:32:00,016 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [565500136] [2022-02-24 01:32:00,017 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [565500136] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:32:00,017 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:32:00,018 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-24 01:32:00,018 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270788076] [2022-02-24 01:32:00,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:32:00,023 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-24 01:32:00,023 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:32:00,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-24 01:32:00,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-24 01:32:00,051 INFO L87 Difference]: Start difference. First operand has 19 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 14 states have internal predecessors, (20), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:32:02,092 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-02-24 01:32:04,279 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-02-24 01:32:06,491 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-02-24 01:32:08,661 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-02-24 01:32:08,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:32:08,846 INFO L93 Difference]: Finished difference Result 36 states and 46 transitions. [2022-02-24 01:32:08,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-24 01:32:08,848 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2022-02-24 01:32:08,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:32:08,853 INFO L225 Difference]: With dead ends: 36 [2022-02-24 01:32:08,853 INFO L226 Difference]: Without dead ends: 20 [2022-02-24 01:32:08,857 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-02-24 01:32:08,873 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 31 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 5 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.8s IncrementalHoareTripleChecker+Time [2022-02-24 01:32:08,874 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 31 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 17 Invalid, 4 Unknown, 0 Unchecked, 8.8s Time] [2022-02-24 01:32:08,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-02-24 01:32:08,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 17. [2022-02-24 01:32:08,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 13 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:32:08,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 20 transitions. [2022-02-24 01:32:08,902 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 20 transitions. Word has length 11 [2022-02-24 01:32:08,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:32:08,902 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 20 transitions. [2022-02-24 01:32:08,903 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:32:08,903 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 20 transitions. [2022-02-24 01:32:08,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-02-24 01:32:08,903 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:32:08,904 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:32:08,904 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-24 01:32:08,905 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:32:08,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:32:08,905 INFO L85 PathProgramCache]: Analyzing trace with hash 1346650520, now seen corresponding path program 1 times [2022-02-24 01:32:08,905 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:32:08,909 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [194041309] [2022-02-24 01:32:08,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:32:08,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:32:08,915 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 01:32:08,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:32:09,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:32:09,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:32:09,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:32:09,236 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:32:09,236 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [194041309] [2022-02-24 01:32:09,237 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [194041309] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:32:09,237 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:32:09,237 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-02-24 01:32:09,238 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693286883] [2022-02-24 01:32:09,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:32:09,238 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-24 01:32:09,238 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:32:09,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-24 01:32:09,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-02-24 01:32:09,239 INFO L87 Difference]: Start difference. First operand 17 states and 20 transitions. Second operand has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:32:11,300 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-02-24 01:32:13,423 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-02-24 01:32:15,590 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-02-24 01:32:17,755 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-02-24 01:32:20,005 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-02-24 01:32:20,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:32:20,174 INFO L93 Difference]: Finished difference Result 51 states and 67 transitions. [2022-02-24 01:32:20,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-24 01:32:20,175 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2022-02-24 01:32:20,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:32:20,175 INFO L225 Difference]: With dead ends: 51 [2022-02-24 01:32:20,176 INFO L226 Difference]: Without dead ends: 38 [2022-02-24 01:32:20,176 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-02-24 01:32:20,177 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 22 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 6 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.9s IncrementalHoareTripleChecker+Time [2022-02-24 01:32:20,177 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 38 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 64 Invalid, 5 Unknown, 0 Unchecked, 10.9s Time] [2022-02-24 01:32:20,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2022-02-24 01:32:20,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 24. [2022-02-24 01:32:20,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 20 states have (on average 1.25) internal successors, (25), 20 states have internal predecessors, (25), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:32:20,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2022-02-24 01:32:20,192 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 14 [2022-02-24 01:32:20,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:32:20,192 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2022-02-24 01:32:20,193 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:32:20,193 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2022-02-24 01:32:20,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-02-24 01:32:20,193 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:32:20,193 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:32:20,193 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-24 01:32:20,193 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:32:20,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:32:20,194 INFO L85 PathProgramCache]: Analyzing trace with hash 1783067819, now seen corresponding path program 1 times [2022-02-24 01:32:20,194 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:32:20,194 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1915222070] [2022-02-24 01:32:20,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:32:20,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:32:20,196 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 01:32:20,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:32:20,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:32:20,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:32:20,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:32:20,451 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:32:20,452 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1915222070] [2022-02-24 01:32:20,452 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1915222070] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:32:20,452 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:32:20,452 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-02-24 01:32:20,452 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694472333] [2022-02-24 01:32:20,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:32:20,452 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-24 01:32:20,452 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:32:20,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-24 01:32:20,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-02-24 01:32:20,453 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand has 6 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:32:22,507 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-02-24 01:32:24,769 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-02-24 01:32:26,918 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-02-24 01:32:29,159 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-02-24 01:32:31,389 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-02-24 01:32:33,552 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-02-24 01:32:35,712 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-02-24 01:32:37,837 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-02-24 01:32:39,997 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-02-24 01:32:42,170 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-02-24 01:32:44,335 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-02-24 01:32:46,502 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-02-24 01:32:46,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:32:46,683 INFO L93 Difference]: Finished difference Result 54 states and 69 transitions. [2022-02-24 01:32:46,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-24 01:32:46,683 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2022-02-24 01:32:46,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:32:46,684 INFO L225 Difference]: With dead ends: 54 [2022-02-24 01:32:46,684 INFO L226 Difference]: Without dead ends: 41 [2022-02-24 01:32:46,684 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-02-24 01:32:46,685 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 24 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 6 mSolverCounterUnsat, 12 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 12 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.1s IncrementalHoareTripleChecker+Time [2022-02-24 01:32:46,685 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 42 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 55 Invalid, 12 Unknown, 0 Unchecked, 26.1s Time] [2022-02-24 01:32:46,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2022-02-24 01:32:46,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 28. [2022-02-24 01:32:46,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 24 states have (on average 1.2916666666666667) internal successors, (31), 24 states have internal predecessors, (31), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:32:46,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 34 transitions. [2022-02-24 01:32:46,695 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 34 transitions. Word has length 15 [2022-02-24 01:32:46,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:32:46,695 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 34 transitions. [2022-02-24 01:32:46,696 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:32:46,696 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 34 transitions. [2022-02-24 01:32:46,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-02-24 01:32:46,696 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:32:46,696 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:32:46,696 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-02-24 01:32:46,696 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:32:46,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:32:46,697 INFO L85 PathProgramCache]: Analyzing trace with hash -117758594, now seen corresponding path program 1 times [2022-02-24 01:32:46,697 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:32:46,697 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1578061006] [2022-02-24 01:32:46,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:32:46,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:32:46,698 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 01:32:46,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:32:46,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:32:46,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:32:46,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:32:46,834 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:32:46,835 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1578061006] [2022-02-24 01:32:46,835 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1578061006] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:32:46,835 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:32:46,835 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-24 01:32:46,835 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282816241] [2022-02-24 01:32:46,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:32:46,835 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-24 01:32:46,835 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:32:46,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-24 01:32:46,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-24 01:32:46,836 INFO L87 Difference]: Start difference. First operand 28 states and 34 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:32:48,871 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-02-24 01:32:51,041 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-02-24 01:32:53,252 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-02-24 01:32:55,442 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-02-24 01:32:57,556 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-02-24 01:32:57,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:32:57,558 INFO L93 Difference]: Finished difference Result 49 states and 61 transitions. [2022-02-24 01:32:57,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-24 01:32:57,721 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2022-02-24 01:32:57,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:32:57,722 INFO L225 Difference]: With dead ends: 49 [2022-02-24 01:32:57,722 INFO L226 Difference]: Without dead ends: 38 [2022-02-24 01:32:57,722 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-02-24 01:32:57,723 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 19 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.5s IncrementalHoareTripleChecker+Time [2022-02-24 01:32:57,723 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 30 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 5 Unknown, 0 Unchecked, 10.5s Time] [2022-02-24 01:32:57,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2022-02-24 01:32:57,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 28. [2022-02-24 01:32:57,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 24 states have (on average 1.2916666666666667) internal successors, (31), 24 states have internal predecessors, (31), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:32:57,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 34 transitions. [2022-02-24 01:32:57,750 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 34 transitions. Word has length 18 [2022-02-24 01:32:57,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:32:57,750 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 34 transitions. [2022-02-24 01:32:57,750 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:32:57,750 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 34 transitions. [2022-02-24 01:32:57,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-02-24 01:32:57,750 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:32:57,751 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:32:57,751 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-02-24 01:32:57,751 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:32:57,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:32:57,751 INFO L85 PathProgramCache]: Analyzing trace with hash 440750327, now seen corresponding path program 1 times [2022-02-24 01:32:57,751 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:32:57,751 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [896546877] [2022-02-24 01:32:57,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:32:57,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:32:57,753 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 01:32:57,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:32:57,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:32:57,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:32:57,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:32:57,881 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:32:57,883 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [896546877] [2022-02-24 01:32:57,883 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [896546877] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:32:57,887 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:32:57,887 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-24 01:32:57,887 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083802598] [2022-02-24 01:32:57,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:32:57,887 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-24 01:32:57,888 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:32:57,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-24 01:32:57,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-02-24 01:32:57,888 INFO L87 Difference]: Start difference. First operand 28 states and 34 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:32:59,903 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-02-24 01:33:02,092 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-02-24 01:33:04,269 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-02-24 01:33:06,439 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-02-24 01:33:08,605 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-02-24 01:33:10,884 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-02-24 01:33:13,066 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-02-24 01:33:13,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:33:13,240 INFO L93 Difference]: Finished difference Result 51 states and 64 transitions. [2022-02-24 01:33:13,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-24 01:33:13,240 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2022-02-24 01:33:13,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:33:13,241 INFO L225 Difference]: With dead ends: 51 [2022-02-24 01:33:13,241 INFO L226 Difference]: Without dead ends: 35 [2022-02-24 01:33:13,241 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-02-24 01:33:13,242 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 19 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 3 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.1s IncrementalHoareTripleChecker+Time [2022-02-24 01:33:13,242 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 31 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 32 Invalid, 7 Unknown, 0 Unchecked, 15.1s Time] [2022-02-24 01:33:13,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-02-24 01:33:13,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 26. [2022-02-24 01:33:13,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 22 states have (on average 1.2727272727272727) internal successors, (28), 22 states have internal predecessors, (28), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:33:13,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 31 transitions. [2022-02-24 01:33:13,253 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 31 transitions. Word has length 19 [2022-02-24 01:33:13,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:33:13,254 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 31 transitions. [2022-02-24 01:33:13,254 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:33:13,254 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 31 transitions. [2022-02-24 01:33:13,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-02-24 01:33:13,255 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:33:13,255 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:33:13,255 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-02-24 01:33:13,255 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:33:13,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:33:13,256 INFO L85 PathProgramCache]: Analyzing trace with hash -530034388, now seen corresponding path program 1 times [2022-02-24 01:33:13,256 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:33:13,256 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1633162065] [2022-02-24 01:33:13,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:33:13,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:33:13,265 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 01:33:13,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:33:13,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:33:13,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:33:13,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:33:13,363 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:33:13,363 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1633162065] [2022-02-24 01:33:13,363 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1633162065] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:33:13,363 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:33:13,363 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-24 01:33:13,363 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904064804] [2022-02-24 01:33:13,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:33:13,364 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-24 01:33:13,364 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:33:13,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-24 01:33:13,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-02-24 01:33:13,365 INFO L87 Difference]: Start difference. First operand 26 states and 31 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:33:15,385 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-02-24 01:33:17,552 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-02-24 01:33:19,718 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-02-24 01:33:21,893 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-02-24 01:33:24,082 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-02-24 01:33:26,250 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-02-24 01:33:26,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:33:26,472 INFO L93 Difference]: Finished difference Result 46 states and 57 transitions. [2022-02-24 01:33:26,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-24 01:33:26,473 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2022-02-24 01:33:26,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:33:26,473 INFO L225 Difference]: With dead ends: 46 [2022-02-24 01:33:26,473 INFO L226 Difference]: Without dead ends: 0 [2022-02-24 01:33:26,474 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-02-24 01:33:26,474 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 15 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 2 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.9s IncrementalHoareTripleChecker+Time [2022-02-24 01:33:26,475 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 29 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 26 Invalid, 6 Unknown, 0 Unchecked, 12.9s Time] [2022-02-24 01:33:26,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-02-24 01:33:26,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-02-24 01:33:26,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2022-02-24 01:33:26,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-02-24 01:33:26,476 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 20 [2022-02-24 01:33:26,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:33:26,476 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-02-24 01:33:26,476 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:33:26,476 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-02-24 01:33:26,476 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-02-24 01:33:26,478 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-02-24 01:33:26,479 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-02-24 01:33:26,480 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-02-24 01:33:27,015 INFO L858 garLoopResultBuilder]: For program point reach_errorEXIT(line 4) no Hoare annotation was computed. [2022-02-24 01:33:27,015 INFO L858 garLoopResultBuilder]: For program point reach_errorENTRY(line 4) no Hoare annotation was computed. [2022-02-24 01:33:27,015 INFO L858 garLoopResultBuilder]: For program point reach_errorFINAL(line 4) no Hoare annotation was computed. [2022-02-24 01:33:27,016 INFO L854 garLoopResultBuilder]: At program point L27(lines 27 49) the Hoare annotation is: (= |old(~__return_107~0)| ~__return_107~0) [2022-02-24 01:33:27,016 INFO L861 garLoopResultBuilder]: At program point mainEXIT(lines 9 78) the Hoare annotation is: true [2022-02-24 01:33:27,016 INFO L854 garLoopResultBuilder]: At program point L54(lines 54 76) the Hoare annotation is: (let ((.cse3 (= |old(~__return_107~0)| ~__return_107~0))) (or (and (<= main_~main__x~0 (let ((.cse0 (div main_~main__x~0 4294967296))) (let ((.cse2 (* .cse0 (- 4294967296)))) (let ((.cse1 (div (+ .cse2 main_~main__x~0) 3))) (+ (* .cse0 4294967296) (* 3 .cse1) (* (div (+ .cse2 (* (- 3) .cse1) main_~main__x~0) 4294967296) 4294967296)))))) .cse3) (and (= main_~main__y~0 1) .cse3))) [2022-02-24 01:33:27,016 INFO L861 garLoopResultBuilder]: At program point mainFINAL(lines 9 78) the Hoare annotation is: true [2022-02-24 01:33:27,016 INFO L854 garLoopResultBuilder]: At program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 63) the Hoare annotation is: false [2022-02-24 01:33:27,016 INFO L854 garLoopResultBuilder]: At program point L63(line 63) the Hoare annotation is: false [2022-02-24 01:33:27,016 INFO L854 garLoopResultBuilder]: At program point mainENTRY(lines 9 78) the Hoare annotation is: (= |old(~__return_107~0)| ~__return_107~0) [2022-02-24 01:33:27,017 INFO L854 garLoopResultBuilder]: At program point L61(lines 61 70) the Hoare annotation is: (and (not (= main_~__VERIFIER_assert__cond~0 0)) (<= main_~main__x~0 (let ((.cse0 (div main_~main__x~0 4294967296))) (let ((.cse2 (* .cse0 (- 4294967296)))) (let ((.cse1 (div (+ .cse2 main_~main__x~0) 3))) (+ (* .cse0 4294967296) (* 3 .cse1) (* (div (+ .cse2 (* (- 3) .cse1) main_~main__x~0) 4294967296) 4294967296)))))) (= |old(~__return_107~0)| ~__return_107~0)) [2022-02-24 01:33:27,017 INFO L854 garLoopResultBuilder]: At program point L18(lines 18 50) the Hoare annotation is: (= |old(~__return_107~0)| ~__return_107~0) [2022-02-24 01:33:27,017 INFO L854 garLoopResultBuilder]: At program point L16(lines 16 77) the Hoare annotation is: (let ((.cse3 (= |old(~__return_107~0)| ~__return_107~0))) (or (and (<= main_~main__x~0 (let ((.cse0 (div main_~main__x~0 4294967296))) (let ((.cse2 (* .cse0 (- 4294967296)))) (let ((.cse1 (div (+ .cse2 main_~main__x~0) 3))) (+ (* .cse0 4294967296) (* 3 .cse1) (* (div (+ .cse2 (* (- 3) .cse1) main_~main__x~0) 4294967296) 4294967296)))))) .cse3) (and (= main_~main__y~0 1) .cse3))) [2022-02-24 01:33:27,017 INFO L854 garLoopResultBuilder]: At program point L47(lines 10 78) the Hoare annotation is: (let ((.cse3 (= |old(~__return_107~0)| ~__return_107~0))) (or (and (<= main_~main__x~0 (let ((.cse0 (div main_~main__x~0 4294967296))) (let ((.cse2 (* .cse0 (- 4294967296)))) (let ((.cse1 (div (+ .cse2 main_~main__x~0) 3))) (+ (* .cse0 4294967296) (* 3 .cse1) (* (div (+ .cse2 (* (- 3) .cse1) main_~main__x~0) 4294967296) 4294967296)))))) .cse3) (and (= main_~main__y~0 1) .cse3))) [2022-02-24 01:33:27,017 INFO L854 garLoopResultBuilder]: At program point L37(lines 37 48) the Hoare annotation is: (= |old(~__return_107~0)| ~__return_107~0) [2022-02-24 01:33:27,017 INFO L861 garLoopResultBuilder]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2022-02-24 01:33:27,017 INFO L854 garLoopResultBuilder]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= ~__return_main~0 |old(~__return_main~0)|) (= |old(~__return_107~0)| ~__return_107~0) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|)) [2022-02-24 01:33:27,017 INFO L861 garLoopResultBuilder]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2022-02-24 01:33:27,017 INFO L861 garLoopResultBuilder]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2022-02-24 01:33:27,017 INFO L861 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: true [2022-02-24 01:33:27,017 INFO L861 garLoopResultBuilder]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2022-02-24 01:33:27,018 INFO L861 garLoopResultBuilder]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2022-02-24 01:33:27,020 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2022-02-24 01:33:27,021 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-02-24 01:33:27,034 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.02 01:33:27 BoogieIcfgContainer [2022-02-24 01:33:27,035 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-02-24 01:33:27,035 INFO L158 Benchmark]: Toolchain (without parser) took 91990.03ms. Allocated memory was 226.5MB in the beginning and 272.6MB in the end (delta: 46.1MB). Free memory was 172.4MB in the beginning and 222.3MB in the end (delta: -49.9MB). Peak memory consumption was 131.4MB. Max. memory is 8.0GB. [2022-02-24 01:33:27,036 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 226.5MB. Free memory is still 188.5MB. There was no memory consumed. Max. memory is 8.0GB. [2022-02-24 01:33:27,036 INFO L158 Benchmark]: CACSL2BoogieTranslator took 158.21ms. Allocated memory is still 226.5MB. Free memory was 172.2MB in the beginning and 198.9MB in the end (delta: -26.7MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-02-24 01:33:27,036 INFO L158 Benchmark]: Boogie Preprocessor took 15.64ms. Allocated memory is still 226.5MB. Free memory was 198.9MB in the beginning and 197.3MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-02-24 01:33:27,036 INFO L158 Benchmark]: RCFGBuilder took 4525.29ms. Allocated memory is still 226.5MB. Free memory was 197.3MB in the beginning and 186.3MB in the end (delta: 11.0MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-02-24 01:33:27,036 INFO L158 Benchmark]: TraceAbstraction took 87273.64ms. Allocated memory was 226.5MB in the beginning and 272.6MB in the end (delta: 46.1MB). Free memory was 185.8MB in the beginning and 222.3MB in the end (delta: -36.5MB). Peak memory consumption was 145.0MB. Max. memory is 8.0GB. [2022-02-24 01:33:27,037 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 226.5MB. Free memory is still 188.5MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 158.21ms. Allocated memory is still 226.5MB. Free memory was 172.2MB in the beginning and 198.9MB in the end (delta: -26.7MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 15.64ms. Allocated memory is still 226.5MB. Free memory was 198.9MB in the beginning and 197.3MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 4525.29ms. Allocated memory is still 226.5MB. Free memory was 197.3MB in the beginning and 186.3MB in the end (delta: 11.0MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * TraceAbstraction took 87273.64ms. Allocated memory was 226.5MB in the beginning and 272.6MB in the end (delta: 46.1MB). Free memory was 185.8MB in the beginning and 222.3MB in the end (delta: -36.5MB). Peak memory consumption was 145.0MB. 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 - PositiveResult [Line: 63]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 22 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 87.2s, OverallIterations: 6, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 85.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.5s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 39 mSolverCounterUnknown, 130 SdHoareTripleChecker+Valid, 84.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 130 mSDsluCounter, 201 SdHoareTripleChecker+Invalid, 78.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 90 mSDsCounter, 23 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 210 IncrementalHoareTripleChecker+Invalid, 272 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 23 mSolverCounterUnsat, 111 mSDtfsCounter, 210 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 57 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred in iteration=3, InterpolantAutomatonStates: 30, 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, 6 MinimizatonAttempts, 49 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 19 LocationsWithAnnotation, 19 PreInvPairs, 56 NumberOfFragments, 243 HoareAnnotationTreeSize, 19 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 19 FomulaSimplificationsInter, 14042 FormulaSimplificationTreeSizeReductionInter, 0.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: (main__x <= main__x / 4294967296 * 4294967296 + 3 * ((main__x / 4294967296 * -4294967296 + main__x) / 3) + (main__x / 4294967296 * -4294967296 + -3 * ((main__x / 4294967296 * -4294967296 + main__x) / 3) + main__x) / 4294967296 * 4294967296 && \old(__return_107) == __return_107) || (main__y == 1 && \old(__return_107) == __return_107) - ProcedureContractResult [Line: 9]: Procedure Contract for main Derived contract for procedure main: 1 RESULT: Ultimate proved your program to be correct! [2022-02-24 01:33:27,059 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...