/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/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/nla-digbench/cohencu-ll.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-d966a43 [2022-01-31 03:29:04,599 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-31 03:29:04,601 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-31 03:29:04,659 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-31 03:29:04,701 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2022-01-31 03:29:04,723 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-31 03:29:04,723 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-31 03:29:04,723 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-31 03:29:04,723 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-31 03:29:04,724 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-31 03:29:04,724 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-31 03:29:04,724 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-31 03:29:04,724 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-31 03:29:04,724 INFO L138 SettingsManager]: * Use SBE=true [2022-01-31 03:29:04,725 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-31 03:29:04,725 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-31 03:29:04,725 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-31 03:29:04,725 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-31 03:29:04,725 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-31 03:29:04,725 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-31 03:29:04,726 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-31 03:29:04,726 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-31 03:29:04,726 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-31 03:29:04,726 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-31 03:29:04,726 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-31 03:29:04,726 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-31 03:29:04,726 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-31 03:29:04,726 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-31 03:29:04,726 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-31 03:29:04,727 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 03:29:04,727 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-31 03:29:04,727 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-31 03:29:04,727 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-31 03:29:04,727 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-31 03:29:04,727 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-31 03:29:04,728 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-31 03:29:04,728 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-31 03:29:04,728 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-31 03:29:04,728 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-31 03:29:04,893 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-31 03:29:04,905 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-31 03:29:04,906 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-31 03:29:04,907 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-31 03:29:04,907 INFO L275 PluginConnector]: CDTParser initialized [2022-01-31 03:29:04,908 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench/cohencu-ll.c [2022-01-31 03:29:04,956 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/102db702d/776f7d851df04e6497740d0fed028a07/FLAGb953c0ead [2022-01-31 03:29:05,253 INFO L306 CDTParser]: Found 1 translation units. [2022-01-31 03:29:05,253 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench/cohencu-ll.c [2022-01-31 03:29:05,257 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/102db702d/776f7d851df04e6497740d0fed028a07/FLAGb953c0ead [2022-01-31 03:29:05,685 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/102db702d/776f7d851df04e6497740d0fed028a07 [2022-01-31 03:29:05,687 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-31 03:29:05,687 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-01-31 03:29:05,688 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-31 03:29:05,688 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-31 03:29:05,692 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-31 03:29:05,692 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 03:29:05" (1/1) ... [2022-01-31 03:29:05,693 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d3c566b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 03:29:05, skipping insertion in model container [2022-01-31 03:29:05,693 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 03:29:05" (1/1) ... [2022-01-31 03:29:05,697 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-31 03:29:05,706 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-31 03:29:05,802 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench/cohencu-ll.c[588,601] [2022-01-31 03:29:05,840 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 03:29:05,845 INFO L203 MainTranslator]: Completed pre-run [2022-01-31 03:29:05,852 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench/cohencu-ll.c[588,601] [2022-01-31 03:29:05,858 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 03:29:05,865 INFO L208 MainTranslator]: Completed translation [2022-01-31 03:29:05,866 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 03:29:05 WrapperNode [2022-01-31 03:29:05,866 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-31 03:29:05,866 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-31 03:29:05,866 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-31 03:29:05,867 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-31 03:29:05,873 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 03:29:05" (1/1) ... [2022-01-31 03:29:05,873 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 03:29:05" (1/1) ... [2022-01-31 03:29:05,877 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 03:29:05" (1/1) ... [2022-01-31 03:29:05,877 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 03:29:05" (1/1) ... [2022-01-31 03:29:05,885 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 03:29:05" (1/1) ... [2022-01-31 03:29:05,887 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 03:29:05" (1/1) ... [2022-01-31 03:29:05,887 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 03:29:05" (1/1) ... [2022-01-31 03:29:05,888 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-31 03:29:05,889 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-31 03:29:05,889 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-31 03:29:05,889 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-31 03:29:05,892 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 03:29:05" (1/1) ... [2022-01-31 03:29:05,898 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 03:29:05,911 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 03:29:05,922 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) [2022-01-31 03:29:05,938 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 [2022-01-31 03:29:05,952 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-01-31 03:29:05,952 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-31 03:29:05,953 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-01-31 03:29:05,953 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-01-31 03:29:05,953 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-01-31 03:29:05,955 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-01-31 03:29:05,955 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-01-31 03:29:05,955 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-01-31 03:29:05,955 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-01-31 03:29:05,955 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-31 03:29:05,955 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ushort [2022-01-31 03:29:05,955 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-01-31 03:29:05,955 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-01-31 03:29:05,955 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-01-31 03:29:05,956 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-01-31 03:29:05,956 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-31 03:29:05,956 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-31 03:29:05,956 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-31 03:29:05,956 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-31 03:29:05,956 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-31 03:29:06,002 INFO L234 CfgBuilder]: Building ICFG [2022-01-31 03:29:06,003 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-31 03:29:06,108 INFO L275 CfgBuilder]: Performing block encoding [2022-01-31 03:29:06,112 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-31 03:29:06,112 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-31 03:29:06,113 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 03:29:06 BoogieIcfgContainer [2022-01-31 03:29:06,113 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-31 03:29:06,114 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-31 03:29:06,114 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-31 03:29:06,120 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-31 03:29:06,120 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 03:29:05" (1/3) ... [2022-01-31 03:29:06,121 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5656d47f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 03:29:06, skipping insertion in model container [2022-01-31 03:29:06,123 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 03:29:05" (2/3) ... [2022-01-31 03:29:06,124 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5656d47f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 03:29:06, skipping insertion in model container [2022-01-31 03:29:06,124 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 03:29:06" (3/3) ... [2022-01-31 03:29:06,125 INFO L111 eAbstractionObserver]: Analyzing ICFG cohencu-ll.c [2022-01-31 03:29:06,128 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-31 03:29:06,128 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-31 03:29:06,160 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-31 03:29:06,165 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 [2022-01-31 03:29:06,165 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-31 03:29:06,176 INFO L276 IsEmpty]: Start isEmpty. Operand has 30 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 13 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-01-31 03:29:06,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-01-31 03:29:06,179 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 03:29:06,179 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 03:29:06,180 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 03:29:06,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 03:29:06,184 INFO L85 PathProgramCache]: Analyzing trace with hash -1298655804, now seen corresponding path program 1 times [2022-01-31 03:29:06,192 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 03:29:06,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173363854] [2022-01-31 03:29:06,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 03:29:06,193 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 03:29:06,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 03:29:06,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 03:29:06,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 03:29:06,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 03:29:06,297 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 03:29:06,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173363854] [2022-01-31 03:29:06,298 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173363854] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 03:29:06,298 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 03:29:06,298 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-31 03:29:06,299 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625229863] [2022-01-31 03:29:06,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 03:29:06,302 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-31 03:29:06,303 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 03:29:06,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-31 03:29:06,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-31 03:29:06,321 INFO L87 Difference]: Start difference. First operand has 30 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 13 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 03:29:06,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 03:29:06,441 INFO L93 Difference]: Finished difference Result 54 states and 91 transitions. [2022-01-31 03:29:06,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-31 03:29:06,443 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2022-01-31 03:29:06,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 03:29:06,454 INFO L225 Difference]: With dead ends: 54 [2022-01-31 03:29:06,454 INFO L226 Difference]: Without dead ends: 25 [2022-01-31 03:29:06,456 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-31 03:29:06,463 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 11 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 03:29:06,464 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 32 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 03:29:06,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-01-31 03:29:06,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2022-01-31 03:29:06,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 10 states have internal predecessors, (11), 13 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-01-31 03:29:06,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 35 transitions. [2022-01-31 03:29:06,497 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 35 transitions. Word has length 11 [2022-01-31 03:29:06,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 03:29:06,497 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 35 transitions. [2022-01-31 03:29:06,498 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 03:29:06,498 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 35 transitions. [2022-01-31 03:29:06,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-01-31 03:29:06,498 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 03:29:06,498 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 03:29:06,498 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-31 03:29:06,499 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 03:29:06,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 03:29:06,500 INFO L85 PathProgramCache]: Analyzing trace with hash -1297106672, now seen corresponding path program 1 times [2022-01-31 03:29:06,500 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 03:29:06,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498391909] [2022-01-31 03:29:06,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 03:29:06,500 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 03:29:06,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 03:29:06,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 03:29:06,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 03:29:06,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 03:29:06,633 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 03:29:06,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498391909] [2022-01-31 03:29:06,633 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498391909] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 03:29:06,634 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 03:29:06,634 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-31 03:29:06,634 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554545964] [2022-01-31 03:29:06,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 03:29:06,635 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-31 03:29:06,635 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 03:29:06,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-31 03:29:06,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-31 03:29:06,636 INFO L87 Difference]: Start difference. First operand 25 states and 35 transitions. Second operand has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 4 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 03:29:06,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 03:29:06,800 INFO L93 Difference]: Finished difference Result 31 states and 40 transitions. [2022-01-31 03:29:06,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-31 03:29:06,801 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 4 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2022-01-31 03:29:06,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 03:29:06,802 INFO L225 Difference]: With dead ends: 31 [2022-01-31 03:29:06,802 INFO L226 Difference]: Without dead ends: 29 [2022-01-31 03:29:06,805 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-01-31 03:29:06,806 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 18 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 03:29:06,807 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 38 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 03:29:06,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-01-31 03:29:06,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2022-01-31 03:29:06,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 13 states have internal predecessors, (14), 13 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-01-31 03:29:06,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 38 transitions. [2022-01-31 03:29:06,822 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 38 transitions. Word has length 11 [2022-01-31 03:29:06,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 03:29:06,822 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 38 transitions. [2022-01-31 03:29:06,822 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 4 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 03:29:06,822 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 38 transitions. [2022-01-31 03:29:06,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-01-31 03:29:06,823 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 03:29:06,823 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 03:29:06,823 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-31 03:29:06,823 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 03:29:06,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 03:29:06,824 INFO L85 PathProgramCache]: Analyzing trace with hash -2099401665, now seen corresponding path program 1 times [2022-01-31 03:29:06,824 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 03:29:06,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229491651] [2022-01-31 03:29:06,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 03:29:06,825 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 03:29:06,841 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 03:29:06,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2054041338] [2022-01-31 03:29:06,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 03:29:06,842 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 03:29:06,842 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 03:29:06,851 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) [2022-01-31 03:29:06,853 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-31 03:29:06,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 03:29:06,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-31 03:29:06,906 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 03:29:06,988 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 03:29:06,988 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-31 03:29:06,989 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 03:29:06,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229491651] [2022-01-31 03:29:06,989 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 03:29:06,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2054041338] [2022-01-31 03:29:06,990 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2054041338] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 03:29:06,992 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 03:29:06,992 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-31 03:29:06,993 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858025708] [2022-01-31 03:29:06,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 03:29:06,993 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-31 03:29:06,993 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 03:29:06,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-31 03:29:06,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-31 03:29:06,994 INFO L87 Difference]: Start difference. First operand 29 states and 38 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-31 03:29:07,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 03:29:07,062 INFO L93 Difference]: Finished difference Result 48 states and 67 transitions. [2022-01-31 03:29:07,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-31 03:29:07,062 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 16 [2022-01-31 03:29:07,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 03:29:07,065 INFO L225 Difference]: With dead ends: 48 [2022-01-31 03:29:07,065 INFO L226 Difference]: Without dead ends: 46 [2022-01-31 03:29:07,066 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-31 03:29:07,069 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 6 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 03:29:07,071 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 145 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 03:29:07,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2022-01-31 03:29:07,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 36. [2022-01-31 03:29:07,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 16 states have (on average 1.125) internal successors, (18), 18 states have internal predecessors, (18), 15 states have call successors, (15), 5 states have call predecessors, (15), 4 states have return successors, (13), 12 states have call predecessors, (13), 13 states have call successors, (13) [2022-01-31 03:29:07,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 46 transitions. [2022-01-31 03:29:07,096 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 46 transitions. Word has length 16 [2022-01-31 03:29:07,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 03:29:07,096 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 46 transitions. [2022-01-31 03:29:07,097 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-31 03:29:07,097 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 46 transitions. [2022-01-31 03:29:07,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-31 03:29:07,121 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 03:29:07,121 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 03:29:07,137 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-01-31 03:29:07,325 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 [2022-01-31 03:29:07,326 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 03:29:07,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 03:29:07,326 INFO L85 PathProgramCache]: Analyzing trace with hash -1061128656, now seen corresponding path program 1 times [2022-01-31 03:29:07,326 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 03:29:07,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116089818] [2022-01-31 03:29:07,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 03:29:07,327 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 03:29:07,333 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 03:29:07,333 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1559695144] [2022-01-31 03:29:07,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 03:29:07,334 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 03:29:07,334 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 03:29:07,356 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) [2022-01-31 03:29:07,375 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-31 03:29:07,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 03:29:07,387 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-31 03:29:07,388 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 03:29:07,459 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-31 03:29:07,459 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-31 03:29:07,459 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 03:29:07,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116089818] [2022-01-31 03:29:07,461 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 03:29:07,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1559695144] [2022-01-31 03:29:07,463 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1559695144] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 03:29:07,463 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 03:29:07,463 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-31 03:29:07,465 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198693741] [2022-01-31 03:29:07,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 03:29:07,465 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-31 03:29:07,466 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 03:29:07,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-31 03:29:07,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-31 03:29:07,466 INFO L87 Difference]: Start difference. First operand 36 states and 46 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-01-31 03:29:07,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 03:29:07,517 INFO L93 Difference]: Finished difference Result 52 states and 70 transitions. [2022-01-31 03:29:07,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-31 03:29:07,518 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 21 [2022-01-31 03:29:07,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 03:29:07,519 INFO L225 Difference]: With dead ends: 52 [2022-01-31 03:29:07,520 INFO L226 Difference]: Without dead ends: 50 [2022-01-31 03:29:07,520 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-31 03:29:07,522 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 6 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 03:29:07,523 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 142 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 03:29:07,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2022-01-31 03:29:07,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 46. [2022-01-31 03:29:07,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 20 states have (on average 1.15) internal successors, (23), 22 states have internal predecessors, (23), 20 states have call successors, (20), 6 states have call predecessors, (20), 5 states have return successors, (18), 17 states have call predecessors, (18), 18 states have call successors, (18) [2022-01-31 03:29:07,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 61 transitions. [2022-01-31 03:29:07,536 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 61 transitions. Word has length 21 [2022-01-31 03:29:07,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 03:29:07,536 INFO L470 AbstractCegarLoop]: Abstraction has 46 states and 61 transitions. [2022-01-31 03:29:07,537 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-01-31 03:29:07,537 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 61 transitions. [2022-01-31 03:29:07,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-01-31 03:29:07,537 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 03:29:07,537 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 03:29:07,555 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-31 03:29:07,751 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 [2022-01-31 03:29:07,752 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 03:29:07,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 03:29:07,752 INFO L85 PathProgramCache]: Analyzing trace with hash 2039501471, now seen corresponding path program 1 times [2022-01-31 03:29:07,752 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 03:29:07,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710962417] [2022-01-31 03:29:07,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 03:29:07,753 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 03:29:07,770 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 03:29:07,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [234685164] [2022-01-31 03:29:07,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 03:29:07,770 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 03:29:07,770 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 03:29:07,772 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-31 03:29:07,773 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-01-31 03:29:07,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 03:29:07,803 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-31 03:29:07,805 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 03:29:07,889 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-01-31 03:29:07,890 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-31 03:29:07,890 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 03:29:07,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710962417] [2022-01-31 03:29:07,890 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 03:29:07,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [234685164] [2022-01-31 03:29:07,890 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [234685164] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 03:29:07,890 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 03:29:07,890 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-31 03:29:07,890 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875628268] [2022-01-31 03:29:07,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 03:29:07,891 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-31 03:29:07,891 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 03:29:07,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-31 03:29:07,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-31 03:29:07,891 INFO L87 Difference]: Start difference. First operand 46 states and 61 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 03:29:07,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 03:29:07,943 INFO L93 Difference]: Finished difference Result 60 states and 76 transitions. [2022-01-31 03:29:07,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-31 03:29:07,944 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 26 [2022-01-31 03:29:07,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 03:29:07,944 INFO L225 Difference]: With dead ends: 60 [2022-01-31 03:29:07,945 INFO L226 Difference]: Without dead ends: 48 [2022-01-31 03:29:07,945 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-31 03:29:07,945 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 6 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 03:29:07,946 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 134 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 03:29:07,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2022-01-31 03:29:07,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2022-01-31 03:29:07,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 23 states have (on average 1.0869565217391304) internal successors, (25), 24 states have internal predecessors, (25), 18 states have call successors, (18), 7 states have call predecessors, (18), 6 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2022-01-31 03:29:07,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 59 transitions. [2022-01-31 03:29:07,952 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 59 transitions. Word has length 26 [2022-01-31 03:29:07,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 03:29:07,952 INFO L470 AbstractCegarLoop]: Abstraction has 48 states and 59 transitions. [2022-01-31 03:29:07,952 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 03:29:07,952 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 59 transitions. [2022-01-31 03:29:07,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-01-31 03:29:07,953 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 03:29:07,953 INFO L514 BasicCegarLoop]: trace histogram [7, 6, 6, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 03:29:07,968 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-01-31 03:29:08,161 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 03:29:08,162 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 03:29:08,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 03:29:08,162 INFO L85 PathProgramCache]: Analyzing trace with hash 542006608, now seen corresponding path program 1 times [2022-01-31 03:29:08,163 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 03:29:08,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115389487] [2022-01-31 03:29:08,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 03:29:08,163 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 03:29:08,170 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 03:29:08,170 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [953347393] [2022-01-31 03:29:08,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 03:29:08,170 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 03:29:08,170 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 03:29:08,171 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-31 03:29:08,172 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-01-31 03:29:08,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 03:29:08,204 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 13 conjunts are in the unsatisfiable core [2022-01-31 03:29:08,206 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 03:29:08,343 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 12 proven. 3 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-01-31 03:29:08,344 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 03:29:08,451 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 12 proven. 3 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-01-31 03:29:08,451 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 03:29:08,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115389487] [2022-01-31 03:29:08,451 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 03:29:08,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [953347393] [2022-01-31 03:29:08,451 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [953347393] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 03:29:08,451 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-31 03:29:08,451 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2022-01-31 03:29:08,451 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358423739] [2022-01-31 03:29:08,452 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-31 03:29:08,452 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-31 03:29:08,452 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 03:29:08,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-31 03:29:08,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-31 03:29:08,452 INFO L87 Difference]: Start difference. First operand 48 states and 59 transitions. Second operand has 8 states, 8 states have (on average 2.0) internal successors, (16), 7 states have internal predecessors, (16), 5 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) [2022-01-31 03:29:08,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 03:29:08,763 INFO L93 Difference]: Finished difference Result 71 states and 91 transitions. [2022-01-31 03:29:08,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-31 03:29:08,763 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 7 states have internal predecessors, (16), 5 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) Word has length 43 [2022-01-31 03:29:08,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 03:29:08,764 INFO L225 Difference]: With dead ends: 71 [2022-01-31 03:29:08,764 INFO L226 Difference]: Without dead ends: 69 [2022-01-31 03:29:08,765 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 78 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2022-01-31 03:29:08,765 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 9 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-31 03:29:08,765 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 175 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-31 03:29:08,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2022-01-31 03:29:08,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 56. [2022-01-31 03:29:08,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 29 states have (on average 1.0689655172413792) internal successors, (31), 30 states have internal predecessors, (31), 18 states have call successors, (18), 9 states have call predecessors, (18), 8 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2022-01-31 03:29:08,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 65 transitions. [2022-01-31 03:29:08,773 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 65 transitions. Word has length 43 [2022-01-31 03:29:08,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 03:29:08,774 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 65 transitions. [2022-01-31 03:29:08,774 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 7 states have internal predecessors, (16), 5 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) [2022-01-31 03:29:08,774 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 65 transitions. [2022-01-31 03:29:08,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-01-31 03:29:08,774 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 03:29:08,775 INFO L514 BasicCegarLoop]: trace histogram [8, 7, 7, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 03:29:08,793 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-01-31 03:29:08,975 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 03:29:08,975 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 03:29:08,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 03:29:08,976 INFO L85 PathProgramCache]: Analyzing trace with hash 806930367, now seen corresponding path program 2 times [2022-01-31 03:29:08,976 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 03:29:08,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627202019] [2022-01-31 03:29:08,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 03:29:08,976 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 03:29:08,983 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 03:29:08,983 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [455129759] [2022-01-31 03:29:08,983 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-31 03:29:08,983 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 03:29:08,983 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 03:29:08,987 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-31 03:29:08,988 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-01-31 03:29:09,024 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-31 03:29:09,024 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 03:29:09,025 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 13 conjunts are in the unsatisfiable core [2022-01-31 03:29:09,028 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 03:29:09,155 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 14 proven. 4 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-01-31 03:29:09,155 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 03:29:09,255 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 14 proven. 4 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-01-31 03:29:09,255 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 03:29:09,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627202019] [2022-01-31 03:29:09,256 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 03:29:09,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [455129759] [2022-01-31 03:29:09,256 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [455129759] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 03:29:09,256 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-31 03:29:09,256 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2022-01-31 03:29:09,256 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962656560] [2022-01-31 03:29:09,256 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-31 03:29:09,256 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-31 03:29:09,256 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 03:29:09,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-31 03:29:09,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-31 03:29:09,257 INFO L87 Difference]: Start difference. First operand 56 states and 65 transitions. Second operand has 8 states, 8 states have (on average 2.0) internal successors, (16), 7 states have internal predecessors, (16), 5 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) [2022-01-31 03:29:09,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 03:29:09,331 INFO L93 Difference]: Finished difference Result 75 states and 94 transitions. [2022-01-31 03:29:09,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-31 03:29:09,331 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 7 states have internal predecessors, (16), 5 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) Word has length 48 [2022-01-31 03:29:09,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 03:29:09,334 INFO L225 Difference]: With dead ends: 75 [2022-01-31 03:29:09,334 INFO L226 Difference]: Without dead ends: 73 [2022-01-31 03:29:09,334 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 88 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-01-31 03:29:09,335 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 7 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 03:29:09,335 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 211 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 03:29:09,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2022-01-31 03:29:09,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 64. [2022-01-31 03:29:09,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 33 states have (on average 1.0606060606060606) internal successors, (35), 35 states have internal predecessors, (35), 21 states have call successors, (21), 10 states have call predecessors, (21), 9 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2022-01-31 03:29:09,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 75 transitions. [2022-01-31 03:29:09,354 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 75 transitions. Word has length 48 [2022-01-31 03:29:09,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 03:29:09,355 INFO L470 AbstractCegarLoop]: Abstraction has 64 states and 75 transitions. [2022-01-31 03:29:09,355 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 7 states have internal predecessors, (16), 5 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) [2022-01-31 03:29:09,355 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 75 transitions. [2022-01-31 03:29:09,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-01-31 03:29:09,356 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 03:29:09,356 INFO L514 BasicCegarLoop]: trace histogram [9, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 03:29:09,377 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-01-31 03:29:09,563 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 03:29:09,564 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 03:29:09,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 03:29:09,564 INFO L85 PathProgramCache]: Analyzing trace with hash 231187056, now seen corresponding path program 3 times [2022-01-31 03:29:09,564 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 03:29:09,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13491194] [2022-01-31 03:29:09,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 03:29:09,565 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 03:29:09,571 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 03:29:09,571 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [156244532] [2022-01-31 03:29:09,571 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-31 03:29:09,571 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 03:29:09,571 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 03:29:09,572 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-31 03:29:09,573 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-01-31 03:29:09,606 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-31 03:29:09,606 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 03:29:09,607 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 19 conjunts are in the unsatisfiable core [2022-01-31 03:29:09,608 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 03:29:09,766 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 16 proven. 5 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-01-31 03:29:09,766 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 03:29:09,944 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 16 proven. 5 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-01-31 03:29:09,944 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 03:29:09,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13491194] [2022-01-31 03:29:09,944 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 03:29:09,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [156244532] [2022-01-31 03:29:09,945 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [156244532] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 03:29:09,945 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-31 03:29:09,945 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2022-01-31 03:29:09,945 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638738870] [2022-01-31 03:29:09,945 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-31 03:29:09,946 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-31 03:29:09,946 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 03:29:09,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-31 03:29:09,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-01-31 03:29:09,946 INFO L87 Difference]: Start difference. First operand 64 states and 75 transitions. Second operand has 8 states, 8 states have (on average 2.0) internal successors, (16), 7 states have internal predecessors, (16), 5 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 5 states have call predecessors, (17), 5 states have call successors, (17) [2022-01-31 03:29:10,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 03:29:10,483 INFO L93 Difference]: Finished difference Result 87 states and 103 transitions. [2022-01-31 03:29:10,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-31 03:29:10,483 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 7 states have internal predecessors, (16), 5 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 5 states have call predecessors, (17), 5 states have call successors, (17) Word has length 53 [2022-01-31 03:29:10,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 03:29:10,484 INFO L225 Difference]: With dead ends: 87 [2022-01-31 03:29:10,484 INFO L226 Difference]: Without dead ends: 79 [2022-01-31 03:29:10,485 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 98 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-01-31 03:29:10,485 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 10 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-31 03:29:10,485 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 155 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-31 03:29:10,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2022-01-31 03:29:10,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 73. [2022-01-31 03:29:10,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 42 states have (on average 1.0476190476190477) internal successors, (44), 44 states have internal predecessors, (44), 18 states have call successors, (18), 13 states have call predecessors, (18), 12 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16) [2022-01-31 03:29:10,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 78 transitions. [2022-01-31 03:29:10,494 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 78 transitions. Word has length 53 [2022-01-31 03:29:10,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 03:29:10,494 INFO L470 AbstractCegarLoop]: Abstraction has 73 states and 78 transitions. [2022-01-31 03:29:10,494 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 7 states have internal predecessors, (16), 5 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 5 states have call predecessors, (17), 5 states have call successors, (17) [2022-01-31 03:29:10,494 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 78 transitions. [2022-01-31 03:29:10,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-31 03:29:10,496 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 03:29:10,496 INFO L514 BasicCegarLoop]: trace histogram [12, 11, 11, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 03:29:10,515 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-01-31 03:29:10,711 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 03:29:10,712 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 03:29:10,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 03:29:10,712 INFO L85 PathProgramCache]: Analyzing trace with hash -950464918, now seen corresponding path program 1 times [2022-01-31 03:29:10,712 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 03:29:10,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552779463] [2022-01-31 03:29:10,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 03:29:10,712 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 03:29:10,719 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 03:29:10,719 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1963455821] [2022-01-31 03:29:10,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 03:29:10,719 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 03:29:10,719 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 03:29:10,721 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-31 03:29:10,722 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-01-31 03:29:10,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 03:29:10,756 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-31 03:29:10,758 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 03:29:11,295 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 22 proven. 7 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2022-01-31 03:29:11,295 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 03:29:11,531 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 22 proven. 7 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2022-01-31 03:29:11,531 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 03:29:11,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552779463] [2022-01-31 03:29:11,531 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 03:29:11,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1963455821] [2022-01-31 03:29:11,531 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1963455821] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 03:29:11,532 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-31 03:29:11,532 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2022-01-31 03:29:11,532 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088421021] [2022-01-31 03:29:11,532 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-31 03:29:11,532 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-31 03:29:11,532 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 03:29:11,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-31 03:29:11,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-01-31 03:29:11,533 INFO L87 Difference]: Start difference. First operand 73 states and 78 transitions. Second operand has 10 states, 8 states have (on average 2.25) internal successors, (18), 9 states have internal predecessors, (18), 7 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (23), 7 states have call predecessors, (23), 7 states have call successors, (23) [2022-01-31 03:29:11,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 03:29:11,786 INFO L93 Difference]: Finished difference Result 99 states and 115 transitions. [2022-01-31 03:29:11,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-31 03:29:11,786 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 2.25) internal successors, (18), 9 states have internal predecessors, (18), 7 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (23), 7 states have call predecessors, (23), 7 states have call successors, (23) Word has length 69 [2022-01-31 03:29:11,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 03:29:11,787 INFO L225 Difference]: With dead ends: 99 [2022-01-31 03:29:11,787 INFO L226 Difference]: Without dead ends: 97 [2022-01-31 03:29:11,787 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 128 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2022-01-31 03:29:11,788 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 10 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 03:29:11,788 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 198 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 03:29:11,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2022-01-31 03:29:11,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 93. [2022-01-31 03:29:11,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 51 states have (on average 1.0784313725490196) internal successors, (55), 53 states have internal predecessors, (55), 27 states have call successors, (27), 15 states have call predecessors, (27), 14 states have return successors, (25), 24 states have call predecessors, (25), 25 states have call successors, (25) [2022-01-31 03:29:11,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 107 transitions. [2022-01-31 03:29:11,809 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 107 transitions. Word has length 69 [2022-01-31 03:29:11,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 03:29:11,809 INFO L470 AbstractCegarLoop]: Abstraction has 93 states and 107 transitions. [2022-01-31 03:29:11,810 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 2.25) internal successors, (18), 9 states have internal predecessors, (18), 7 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (23), 7 states have call predecessors, (23), 7 states have call successors, (23) [2022-01-31 03:29:11,810 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 107 transitions. [2022-01-31 03:29:11,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-31 03:29:11,810 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 03:29:11,810 INFO L514 BasicCegarLoop]: trace histogram [13, 12, 12, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 03:29:11,829 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-01-31 03:29:12,011 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 03:29:12,011 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 03:29:12,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 03:29:12,012 INFO L85 PathProgramCache]: Analyzing trace with hash -1778111067, now seen corresponding path program 1 times [2022-01-31 03:29:12,012 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 03:29:12,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229133422] [2022-01-31 03:29:12,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 03:29:12,012 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 03:29:12,018 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 03:29:12,018 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1940699634] [2022-01-31 03:29:12,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 03:29:12,018 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 03:29:12,018 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 03:29:12,040 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-31 03:29:12,041 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-01-31 03:29:12,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 03:29:12,077 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 15 conjunts are in the unsatisfiable core [2022-01-31 03:29:12,079 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 03:29:12,340 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 24 proven. 7 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2022-01-31 03:29:12,340 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 03:29:12,501 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 03:29:12,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229133422] [2022-01-31 03:29:12,502 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 03:29:12,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1940699634] [2022-01-31 03:29:12,502 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1940699634] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 03:29:12,502 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-01-31 03:29:12,502 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2022-01-31 03:29:12,502 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317057923] [2022-01-31 03:29:12,502 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-01-31 03:29:12,502 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-31 03:29:12,502 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 03:29:12,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-31 03:29:12,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-01-31 03:29:12,503 INFO L87 Difference]: Start difference. First operand 93 states and 107 transitions. Second operand has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 4 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2022-01-31 03:29:12,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 03:29:12,587 INFO L93 Difference]: Finished difference Result 102 states and 117 transitions. [2022-01-31 03:29:12,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-31 03:29:12,587 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 4 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 74 [2022-01-31 03:29:12,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 03:29:12,589 INFO L225 Difference]: With dead ends: 102 [2022-01-31 03:29:12,589 INFO L226 Difference]: Without dead ends: 93 [2022-01-31 03:29:12,589 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 107 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-01-31 03:29:12,589 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 6 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 213 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 03:29:12,590 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 213 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 03:29:12,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2022-01-31 03:29:12,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2022-01-31 03:29:12,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 51 states have (on average 1.0588235294117647) internal successors, (54), 53 states have internal predecessors, (54), 27 states have call successors, (27), 15 states have call predecessors, (27), 14 states have return successors, (25), 24 states have call predecessors, (25), 25 states have call successors, (25) [2022-01-31 03:29:12,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 106 transitions. [2022-01-31 03:29:12,602 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 106 transitions. Word has length 74 [2022-01-31 03:29:12,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 03:29:12,602 INFO L470 AbstractCegarLoop]: Abstraction has 93 states and 106 transitions. [2022-01-31 03:29:12,603 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 4 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2022-01-31 03:29:12,603 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 106 transitions. [2022-01-31 03:29:12,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-01-31 03:29:12,603 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 03:29:12,603 INFO L514 BasicCegarLoop]: trace histogram [13, 12, 12, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 03:29:12,621 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-01-31 03:29:12,822 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-01-31 03:29:12,822 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 03:29:12,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 03:29:12,822 INFO L85 PathProgramCache]: Analyzing trace with hash -1848052528, now seen corresponding path program 4 times [2022-01-31 03:29:12,823 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 03:29:12,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599663982] [2022-01-31 03:29:12,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 03:29:12,823 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 03:29:12,828 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 03:29:12,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [619038881] [2022-01-31 03:29:12,829 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-31 03:29:12,829 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 03:29:12,829 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 03:29:12,830 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-31 03:29:12,831 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-01-31 03:29:16,150 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-31 03:29:16,150 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 03:29:16,153 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 47 conjunts are in the unsatisfiable core [2022-01-31 03:29:16,155 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 03:29:16,459 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 82 proven. 65 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2022-01-31 03:29:16,459 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 03:29:17,024 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 98 proven. 19 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2022-01-31 03:29:17,024 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 03:29:17,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599663982] [2022-01-31 03:29:17,024 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 03:29:17,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [619038881] [2022-01-31 03:29:17,024 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [619038881] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 03:29:17,024 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-31 03:29:17,025 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 15 [2022-01-31 03:29:17,025 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705740681] [2022-01-31 03:29:17,025 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-31 03:29:17,025 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-31 03:29:17,025 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 03:29:17,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-31 03:29:17,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2022-01-31 03:29:17,026 INFO L87 Difference]: Start difference. First operand 93 states and 106 transitions. Second operand has 15 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 9 states have internal predecessors, (22), 9 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (23), 8 states have call predecessors, (23), 8 states have call successors, (23) [2022-01-31 03:29:17,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 03:29:17,156 INFO L93 Difference]: Finished difference Result 99 states and 111 transitions. [2022-01-31 03:29:17,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-31 03:29:17,157 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 9 states have internal predecessors, (22), 9 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (23), 8 states have call predecessors, (23), 8 states have call successors, (23) Word has length 75 [2022-01-31 03:29:17,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 03:29:17,158 INFO L225 Difference]: With dead ends: 99 [2022-01-31 03:29:17,158 INFO L226 Difference]: Without dead ends: 97 [2022-01-31 03:29:17,159 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 132 SyntacticMatches, 4 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2022-01-31 03:29:17,159 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 15 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 03:29:17,159 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 95 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 03:29:17,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2022-01-31 03:29:17,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2022-01-31 03:29:17,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 54 states have (on average 1.0555555555555556) internal successors, (57), 56 states have internal predecessors, (57), 27 states have call successors, (27), 16 states have call predecessors, (27), 15 states have return successors, (25), 24 states have call predecessors, (25), 25 states have call successors, (25) [2022-01-31 03:29:17,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 109 transitions. [2022-01-31 03:29:17,174 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 109 transitions. Word has length 75 [2022-01-31 03:29:17,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 03:29:17,175 INFO L470 AbstractCegarLoop]: Abstraction has 97 states and 109 transitions. [2022-01-31 03:29:17,175 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 9 states have internal predecessors, (22), 9 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (23), 8 states have call predecessors, (23), 8 states have call successors, (23) [2022-01-31 03:29:17,175 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 109 transitions. [2022-01-31 03:29:17,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-01-31 03:29:17,181 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 03:29:17,181 INFO L514 BasicCegarLoop]: trace histogram [18, 17, 17, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 03:29:17,187 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-01-31 03:29:17,387 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 03:29:17,387 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 03:29:17,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 03:29:17,388 INFO L85 PathProgramCache]: Analyzing trace with hash 1444427638, now seen corresponding path program 2 times [2022-01-31 03:29:17,388 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 03:29:17,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464853213] [2022-01-31 03:29:17,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 03:29:17,388 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 03:29:17,396 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 03:29:17,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1402413179] [2022-01-31 03:29:17,396 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-31 03:29:17,396 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 03:29:17,396 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 03:29:17,405 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-31 03:29:17,406 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-01-31 03:29:17,450 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-31 03:29:17,450 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 03:29:17,453 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 22 conjunts are in the unsatisfiable core [2022-01-31 03:29:17,454 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 03:29:17,768 INFO L134 CoverageAnalysis]: Checked inductivity of 599 backedges. 34 proven. 21 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2022-01-31 03:29:17,768 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 03:29:17,919 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 03:29:17,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464853213] [2022-01-31 03:29:17,920 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 03:29:17,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1402413179] [2022-01-31 03:29:17,920 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1402413179] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 03:29:17,920 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-01-31 03:29:17,920 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2022-01-31 03:29:17,920 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518100872] [2022-01-31 03:29:17,920 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-01-31 03:29:17,920 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-31 03:29:17,920 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 03:29:17,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-31 03:29:17,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-01-31 03:29:17,921 INFO L87 Difference]: Start difference. First operand 97 states and 109 transitions. Second operand has 8 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 5 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 5 states have call predecessors, (18), 5 states have call successors, (18) [2022-01-31 03:29:18,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 03:29:18,029 INFO L93 Difference]: Finished difference Result 116 states and 124 transitions. [2022-01-31 03:29:18,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-31 03:29:18,029 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 5 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 5 states have call predecessors, (18), 5 states have call successors, (18) Word has length 101 [2022-01-31 03:29:18,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 03:29:18,030 INFO L225 Difference]: With dead ends: 116 [2022-01-31 03:29:18,030 INFO L226 Difference]: Without dead ends: 103 [2022-01-31 03:29:18,030 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 133 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2022-01-31 03:29:18,031 INFO L933 BasicCegarLoop]: 46 mSDtfsCounter, 6 mSDsluCounter, 215 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 261 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 03:29:18,031 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 261 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 03:29:18,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2022-01-31 03:29:18,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2022-01-31 03:29:18,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 60 states have (on average 1.0333333333333334) internal successors, (62), 61 states have internal predecessors, (62), 25 states have call successors, (25), 18 states have call predecessors, (25), 17 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2022-01-31 03:29:18,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 110 transitions. [2022-01-31 03:29:18,042 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 110 transitions. Word has length 101 [2022-01-31 03:29:18,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 03:29:18,043 INFO L470 AbstractCegarLoop]: Abstraction has 103 states and 110 transitions. [2022-01-31 03:29:18,043 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 5 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 5 states have call predecessors, (18), 5 states have call successors, (18) [2022-01-31 03:29:18,043 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 110 transitions. [2022-01-31 03:29:18,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-01-31 03:29:18,044 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 03:29:18,044 INFO L514 BasicCegarLoop]: trace histogram [22, 21, 21, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 03:29:18,065 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-01-31 03:29:18,259 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-01-31 03:29:18,260 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 03:29:18,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 03:29:18,260 INFO L85 PathProgramCache]: Analyzing trace with hash 2017316106, now seen corresponding path program 2 times [2022-01-31 03:29:18,260 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 03:29:18,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963550846] [2022-01-31 03:29:18,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 03:29:18,260 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 03:29:18,268 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 03:29:18,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1336814161] [2022-01-31 03:29:18,269 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-31 03:29:18,269 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 03:29:18,269 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 03:29:18,273 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-31 03:29:18,274 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-01-31 03:29:18,326 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-31 03:29:18,327 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 03:29:18,328 INFO L263 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 35 conjunts are in the unsatisfiable core [2022-01-31 03:29:18,330 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 03:29:18,714 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 42 proven. 42 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2022-01-31 03:29:18,714 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 03:29:18,880 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 03:29:18,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963550846] [2022-01-31 03:29:18,880 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 03:29:18,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1336814161] [2022-01-31 03:29:18,880 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1336814161] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 03:29:18,880 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-01-31 03:29:18,880 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2022-01-31 03:29:18,880 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097597133] [2022-01-31 03:29:18,880 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-01-31 03:29:18,881 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-31 03:29:18,881 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 03:29:18,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-31 03:29:18,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2022-01-31 03:29:18,881 INFO L87 Difference]: Start difference. First operand 103 states and 110 transitions. Second operand has 9 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 6 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (22), 6 states have call predecessors, (22), 6 states have call successors, (22) [2022-01-31 03:29:19,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 03:29:19,036 INFO L93 Difference]: Finished difference Result 135 states and 145 transitions. [2022-01-31 03:29:19,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-31 03:29:19,037 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 6 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (22), 6 states have call predecessors, (22), 6 states have call successors, (22) Word has length 123 [2022-01-31 03:29:19,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 03:29:19,037 INFO L225 Difference]: With dead ends: 135 [2022-01-31 03:29:19,037 INFO L226 Difference]: Without dead ends: 133 [2022-01-31 03:29:19,038 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 149 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2022-01-31 03:29:19,038 INFO L933 BasicCegarLoop]: 46 mSDtfsCounter, 6 mSDsluCounter, 275 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 321 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 03:29:19,038 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 321 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 03:29:19,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2022-01-31 03:29:19,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 132. [2022-01-31 03:29:19,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 77 states have (on average 1.0389610389610389) internal successors, (80), 79 states have internal predecessors, (80), 32 states have call successors, (32), 23 states have call predecessors, (32), 22 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30) [2022-01-31 03:29:19,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 142 transitions. [2022-01-31 03:29:19,053 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 142 transitions. Word has length 123 [2022-01-31 03:29:19,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 03:29:19,053 INFO L470 AbstractCegarLoop]: Abstraction has 132 states and 142 transitions. [2022-01-31 03:29:19,053 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 6 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (22), 6 states have call predecessors, (22), 6 states have call successors, (22) [2022-01-31 03:29:19,053 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 142 transitions. [2022-01-31 03:29:19,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-01-31 03:29:19,054 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 03:29:19,054 INFO L514 BasicCegarLoop]: trace histogram [23, 22, 22, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 03:29:19,073 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-01-31 03:29:19,259 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-01-31 03:29:19,259 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 03:29:19,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 03:29:19,260 INFO L85 PathProgramCache]: Analyzing trace with hash 493720325, now seen corresponding path program 3 times [2022-01-31 03:29:19,260 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 03:29:19,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668778865] [2022-01-31 03:29:19,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 03:29:19,260 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 03:29:19,266 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 03:29:19,266 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [653173335] [2022-01-31 03:29:19,266 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-31 03:29:19,266 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 03:29:19,266 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 03:29:19,267 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-31 03:29:19,268 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-01-31 03:29:20,314 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-01-31 03:29:20,314 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 03:29:20,316 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 32 conjunts are in the unsatisfiable core [2022-01-31 03:29:20,318 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 03:29:31,849 INFO L134 CoverageAnalysis]: Checked inductivity of 1010 backedges. 181 proven. 69 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2022-01-31 03:29:31,849 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 03:29:35,550 INFO L134 CoverageAnalysis]: Checked inductivity of 1010 backedges. 148 proven. 39 refuted. 0 times theorem prover too weak. 823 trivial. 0 not checked. [2022-01-31 03:29:35,550 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 03:29:35,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668778865] [2022-01-31 03:29:35,550 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 03:29:35,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [653173335] [2022-01-31 03:29:35,550 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [653173335] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 03:29:35,551 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-31 03:29:35,551 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 16 [2022-01-31 03:29:35,551 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144394706] [2022-01-31 03:29:35,551 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-31 03:29:35,551 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-31 03:29:35,551 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 03:29:35,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-31 03:29:35,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2022-01-31 03:29:35,552 INFO L87 Difference]: Start difference. First operand 132 states and 142 transitions. Second operand has 16 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 12 states have internal predecessors, (27), 9 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (32), 8 states have call predecessors, (32), 9 states have call successors, (32) [2022-01-31 03:29:39,110 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-01-31 03:29:42,619 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-01-31 03:29:43,795 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-01-31 03:29:48,393 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-01-31 03:29:50,398 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-01-31 03:29:51,927 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-01-31 03:29:53,662 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.74s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-01-31 03:29:56,463 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-01-31 03:29:57,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 03:29:57,442 INFO L93 Difference]: Finished difference Result 132 states and 142 transitions. [2022-01-31 03:29:57,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-31 03:29:57,443 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 12 states have internal predecessors, (27), 9 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (32), 8 states have call predecessors, (32), 9 states have call successors, (32) Word has length 128 [2022-01-31 03:29:57,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 03:29:57,443 INFO L225 Difference]: With dead ends: 132 [2022-01-31 03:29:57,443 INFO L226 Difference]: Without dead ends: 0 [2022-01-31 03:29:57,444 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 240 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 9.9s TimeCoverageRelationStatistics Valid=99, Invalid=321, Unknown=0, NotChecked=0, Total=420 [2022-01-31 03:29:57,444 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 18 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 46 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.1s IncrementalHoareTripleChecker+Time [2022-01-31 03:29:57,445 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 144 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 133 Invalid, 5 Unknown, 0 Unchecked, 19.1s Time] [2022-01-31 03:29:57,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-01-31 03:29:57,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-01-31 03:29:57,445 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) [2022-01-31 03:29:57,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-01-31 03:29:57,445 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 128 [2022-01-31 03:29:57,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 03:29:57,445 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-01-31 03:29:57,445 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 12 states have internal predecessors, (27), 9 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (32), 8 states have call predecessors, (32), 9 states have call successors, (32) [2022-01-31 03:29:57,445 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-01-31 03:29:57,446 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-01-31 03:29:57,449 INFO L764 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-01-31 03:29:57,456 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-01-31 03:29:57,650 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-01-31 03:29:57,652 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-01-31 03:30:03,760 INFO L858 garLoopResultBuilder]: For program point reach_errorEXIT(line 8) no Hoare annotation was computed. [2022-01-31 03:30:03,761 INFO L858 garLoopResultBuilder]: For program point reach_errorENTRY(line 8) no Hoare annotation was computed. [2022-01-31 03:30:03,761 INFO L858 garLoopResultBuilder]: For program point reach_errorFINAL(line 8) no Hoare annotation was computed. [2022-01-31 03:30:03,761 INFO L858 garLoopResultBuilder]: For program point assume_abort_if_notENTRY(lines 11 13) no Hoare annotation was computed. [2022-01-31 03:30:03,761 INFO L858 garLoopResultBuilder]: For program point L12(line 12) no Hoare annotation was computed. [2022-01-31 03:30:03,761 INFO L858 garLoopResultBuilder]: For program point L12-2(lines 11 13) no Hoare annotation was computed. [2022-01-31 03:30:03,761 INFO L858 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 11 13) no Hoare annotation was computed. [2022-01-31 03:30:03,761 INFO L854 garLoopResultBuilder]: At program point L33(line 33) the Hoare annotation is: (let ((.cse0 (= (+ (* main_~n~0 6) 6) main_~z~0)) (.cse1 (or (and (<= 0 (+ 65536 main_~a~0)) (not (<= (mod main_~a~0 65536) 32767)) (< main_~a~0 0)) (and (< main_~a~0 65536) (<= 0 main_~a~0) (<= (div main_~a~0 (- 65536)) (div (+ (* (- 1) main_~a~0) 32767) 65536))))) (.cse2 (= (* main_~n~0 main_~n~0 main_~n~0) main_~x~0))) (or (and (= (+ (* main_~z~0 main_~z~0) 12) (+ (* main_~y~0 12) (* main_~z~0 6))) .cse0 .cse1 (= main_~z~0 6) .cse2) (and (<= main_~n~0 (+ main_~a~0 1)) .cse0 .cse1 (= (+ (* 3 (* main_~n~0 main_~n~0)) (* main_~n~0 3) 1) main_~y~0) .cse2))) [2022-01-31 03:30:03,761 INFO L854 garLoopResultBuilder]: At program point L33-1(line 33) the Hoare annotation is: (let ((.cse0 (= (+ (* main_~n~0 6) 6) main_~z~0)) (.cse1 (or (and (<= 0 (+ 65536 main_~a~0)) (not (<= (mod main_~a~0 65536) 32767)) (< main_~a~0 0)) (and (< main_~a~0 65536) (<= 0 main_~a~0) (<= (div main_~a~0 (- 65536)) (div (+ (* (- 1) main_~a~0) 32767) 65536))))) (.cse2 (= (* main_~n~0 main_~n~0 main_~n~0) main_~x~0))) (or (and (= (+ (* main_~z~0 main_~z~0) 12) (+ (* main_~y~0 12) (* main_~z~0 6))) .cse0 .cse1 (= main_~z~0 6) .cse2) (and (<= main_~n~0 (+ main_~a~0 1)) .cse0 .cse1 (= (+ (* 3 (* main_~n~0 main_~n~0)) (* main_~n~0 3) 1) main_~y~0) .cse2))) [2022-01-31 03:30:03,761 INFO L858 garLoopResultBuilder]: For program point mainEXIT(lines 22 55) no Hoare annotation was computed. [2022-01-31 03:30:03,761 INFO L858 garLoopResultBuilder]: For program point L52(line 52) no Hoare annotation was computed. [2022-01-31 03:30:03,761 INFO L854 garLoopResultBuilder]: At program point L50(line 50) the Hoare annotation is: (and (= (+ (* main_~x~0 18) (* main_~y~0 12) 6) (+ (* main_~z~0 2) (* main_~z~0 main_~y~0))) (= (+ (* main_~n~0 6) 6) main_~z~0) (= (+ (* 3 (* main_~n~0 main_~n~0)) (* main_~n~0 3) 1) main_~y~0)) [2022-01-31 03:30:03,761 INFO L854 garLoopResultBuilder]: At program point L48(line 48) the Hoare annotation is: (let ((.cse1 (= (+ (* main_~n~0 6) 6) main_~z~0))) (or (let ((.cse0 (div (+ main_~z~0 (- 6)) 6))) (and (= (+ (* 3 (* main_~n~0 main_~n~0)) main_~z~0) (+ 5 main_~y~0 (* main_~n~0 3))) (not (<= .cse0 main_~a~0)) .cse1 (or (and (<= 0 (+ 65536 main_~a~0)) (not (<= (mod main_~a~0 65536) 32767)) (< main_~a~0 0)) (and (< main_~a~0 65536) (<= 0 main_~a~0) (<= (div main_~a~0 (- 65536)) (div (+ (* (- 1) main_~a~0) 32767) 65536)))) (<= .cse0 (+ main_~a~0 1)) (= (* main_~n~0 main_~n~0 main_~n~0) main_~x~0))) (and (= main_~x~0 0) (= main_~y~0 1) .cse1 (= main_~z~0 6)))) [2022-01-31 03:30:03,761 INFO L858 garLoopResultBuilder]: For program point mainFINAL(lines 22 55) no Hoare annotation was computed. [2022-01-31 03:30:03,761 INFO L854 garLoopResultBuilder]: At program point L36(line 36) the Hoare annotation is: (let ((.cse0 (* main_~y~0 12)) (.cse1 (= (+ (* main_~n~0 6) 6) main_~z~0)) (.cse2 (or (and (<= 0 (+ 65536 main_~a~0)) (not (<= (mod main_~a~0 65536) 32767)) (< main_~a~0 0)) (and (< main_~a~0 65536) (<= 0 main_~a~0) (<= (div main_~a~0 (- 65536)) (div (+ (* (- 1) main_~a~0) 32767) 65536)))))) (or (and (= (+ (* main_~z~0 main_~z~0) 12) (+ .cse0 (* main_~z~0 6))) .cse1 .cse2 (= main_~z~0 6) (= (* main_~n~0 main_~n~0 main_~n~0) main_~x~0)) (and (<= main_~n~0 (+ main_~a~0 1)) (= (+ (* main_~x~0 18) .cse0 6) (+ (* main_~z~0 2) (* main_~z~0 main_~y~0))) .cse1 .cse2 (= (+ (* 3 (* main_~n~0 main_~n~0)) (* main_~n~0 3) 1) main_~y~0)))) [2022-01-31 03:30:03,762 INFO L854 garLoopResultBuilder]: At program point L34(line 34) the Hoare annotation is: (let ((.cse0 (= (+ (* main_~n~0 6) 6) main_~z~0)) (.cse1 (or (and (<= 0 (+ 65536 main_~a~0)) (not (<= (mod main_~a~0 65536) 32767)) (< main_~a~0 0)) (and (< main_~a~0 65536) (<= 0 main_~a~0) (<= (div main_~a~0 (- 65536)) (div (+ (* (- 1) main_~a~0) 32767) 65536))))) (.cse2 (= (* main_~n~0 main_~n~0 main_~n~0) main_~x~0))) (or (and (= (+ (* main_~z~0 main_~z~0) 12) (+ (* main_~y~0 12) (* main_~z~0 6))) .cse0 .cse1 (= main_~z~0 6) .cse2) (and (<= main_~n~0 (+ main_~a~0 1)) .cse0 .cse1 (= (+ (* 3 (* main_~n~0 main_~n~0)) (* main_~n~0 3) 1) main_~y~0) .cse2))) [2022-01-31 03:30:03,762 INFO L854 garLoopResultBuilder]: At program point L32-2(lines 32 45) the Hoare annotation is: (let ((.cse0 (= (+ (* main_~n~0 6) 6) main_~z~0)) (.cse1 (or (and (<= 0 (+ 65536 main_~a~0)) (not (<= (mod main_~a~0 65536) 32767)) (< main_~a~0 0)) (and (< main_~a~0 65536) (<= 0 main_~a~0) (<= (div main_~a~0 (- 65536)) (div (+ (* (- 1) main_~a~0) 32767) 65536))))) (.cse2 (= (* main_~n~0 main_~n~0 main_~n~0) main_~x~0))) (or (and (= (+ (* main_~z~0 main_~z~0) 12) (+ (* main_~y~0 12) (* main_~z~0 6))) .cse0 .cse1 (= main_~z~0 6) .cse2) (and (<= main_~n~0 (+ main_~a~0 1)) .cse0 .cse1 (= (+ (* 3 (* main_~n~0 main_~n~0)) (* main_~n~0 3) 1) main_~y~0) .cse2))) [2022-01-31 03:30:03,762 INFO L861 garLoopResultBuilder]: At program point mainENTRY(lines 22 55) the Hoare annotation is: true [2022-01-31 03:30:03,762 INFO L854 garLoopResultBuilder]: At program point L32-3(lines 32 45) the Hoare annotation is: (let ((.cse0 (= (+ (* main_~n~0 6) 6) main_~z~0))) (or (and (= main_~x~0 0) (= main_~y~0 1) .cse0 (= main_~z~0 6)) (let ((.cse1 (div (+ main_~z~0 (- 6)) 6))) (and (not (<= .cse1 main_~a~0)) (= (+ (* main_~x~0 18) (* main_~y~0 12) 6) (+ (* main_~z~0 2) (* main_~z~0 main_~y~0))) .cse0 (or (and (<= 0 (+ 65536 main_~a~0)) (not (<= (mod main_~a~0 65536) 32767)) (< main_~a~0 0)) (and (< main_~a~0 65536) (<= 0 main_~a~0) (<= (div main_~a~0 (- 65536)) (div (+ (* (- 1) main_~a~0) 32767) 65536)))) (= (+ (* 3 (* main_~n~0 main_~n~0)) (* main_~n~0 3) 1) main_~y~0) (<= .cse1 (+ main_~a~0 1)))))) [2022-01-31 03:30:03,762 INFO L854 garLoopResultBuilder]: At program point L51(line 51) the Hoare annotation is: (and (= (+ (* main_~x~0 18) (* main_~y~0 12) 6) (+ (* main_~z~0 2) (* main_~z~0 main_~y~0))) (= (+ (* main_~n~0 6) 6) main_~z~0) (= (+ (* 3 (* main_~n~0 main_~n~0)) (* main_~n~0 3) 1) main_~y~0)) [2022-01-31 03:30:03,762 INFO L854 garLoopResultBuilder]: At program point L49(line 49) the Hoare annotation is: (and (= (+ (* main_~x~0 18) (* main_~y~0 12) 6) (+ (* main_~z~0 2) (* main_~z~0 main_~y~0))) (= (+ (* main_~n~0 6) 6) main_~z~0) (= (+ (* 3 (* main_~n~0 main_~n~0)) (* main_~n~0 3) 1) main_~y~0)) [2022-01-31 03:30:03,762 INFO L854 garLoopResultBuilder]: At program point L47(line 47) the Hoare annotation is: (let ((.cse0 (= (+ (* main_~n~0 6) 6) main_~z~0))) (or (and (= main_~x~0 0) (= main_~y~0 1) .cse0 (= main_~z~0 6)) (let ((.cse1 (div (+ main_~z~0 (- 6)) 6))) (and (not (<= .cse1 main_~a~0)) (= (+ (* main_~x~0 18) (* main_~y~0 12) 6) (+ (* main_~z~0 2) (* main_~z~0 main_~y~0))) .cse0 (or (and (<= 0 (+ 65536 main_~a~0)) (not (<= (mod main_~a~0 65536) 32767)) (< main_~a~0 0)) (and (< main_~a~0 65536) (<= 0 main_~a~0) (<= (div main_~a~0 (- 65536)) (div (+ (* (- 1) main_~a~0) 32767) 65536)))) (= (+ (* 3 (* main_~n~0 main_~n~0)) (* main_~n~0 3) 1) main_~y~0) (<= .cse1 (+ main_~a~0 1)))))) [2022-01-31 03:30:03,762 INFO L858 garLoopResultBuilder]: For program point L37(lines 32 45) no Hoare annotation was computed. [2022-01-31 03:30:03,762 INFO L854 garLoopResultBuilder]: At program point L35(line 35) the Hoare annotation is: (let ((.cse0 (* main_~y~0 12)) (.cse1 (= (+ (* main_~n~0 6) 6) main_~z~0)) (.cse2 (or (and (<= 0 (+ 65536 main_~a~0)) (not (<= (mod main_~a~0 65536) 32767)) (< main_~a~0 0)) (and (< main_~a~0 65536) (<= 0 main_~a~0) (<= (div main_~a~0 (- 65536)) (div (+ (* (- 1) main_~a~0) 32767) 65536)))))) (or (and (= (+ (* main_~z~0 main_~z~0) 12) (+ .cse0 (* main_~z~0 6))) .cse1 .cse2 (= main_~z~0 6) (= (* main_~n~0 main_~n~0 main_~n~0) main_~x~0)) (and (<= main_~n~0 (+ main_~a~0 1)) (= (+ (* main_~x~0 18) .cse0 6) (+ (* main_~z~0 2) (* main_~z~0 main_~y~0))) .cse1 .cse2 (= (+ (* 3 (* main_~n~0 main_~n~0)) (* main_~n~0 3) 1) main_~y~0)))) [2022-01-31 03:30:03,762 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2022-01-31 03:30:03,762 INFO L854 garLoopResultBuilder]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|)) [2022-01-31 03:30:03,762 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2022-01-31 03:30:03,762 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-01-31 03:30:03,762 INFO L861 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: true [2022-01-31 03:30:03,762 INFO L861 garLoopResultBuilder]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2022-01-31 03:30:03,762 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-01-31 03:30:03,762 INFO L858 garLoopResultBuilder]: For program point L16(lines 16 17) no Hoare annotation was computed. [2022-01-31 03:30:03,763 INFO L858 garLoopResultBuilder]: For program point L15(lines 15 18) no Hoare annotation was computed. [2022-01-31 03:30:03,763 INFO L861 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 14 20) the Hoare annotation is: true [2022-01-31 03:30:03,763 INFO L858 garLoopResultBuilder]: For program point L15-2(lines 14 20) no Hoare annotation was computed. [2022-01-31 03:30:03,763 INFO L858 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 14 20) no Hoare annotation was computed. [2022-01-31 03:30:03,763 INFO L858 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2022-01-31 03:30:03,765 INFO L732 BasicCegarLoop]: Path program histogram: [4, 3, 2, 1, 1, 1, 1, 1] [2022-01-31 03:30:03,766 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-01-31 03:30:03,775 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.01 03:30:03 BoogieIcfgContainer [2022-01-31 03:30:03,776 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-31 03:30:03,776 INFO L158 Benchmark]: Toolchain (without parser) took 58088.57ms. Allocated memory was 181.4MB in the beginning and 220.2MB in the end (delta: 38.8MB). Free memory was 125.5MB in the beginning and 150.7MB in the end (delta: -25.2MB). Peak memory consumption was 105.5MB. Max. memory is 8.0GB. [2022-01-31 03:30:03,776 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 181.4MB. Free memory is still 141.9MB. There was no memory consumed. Max. memory is 8.0GB. [2022-01-31 03:30:03,776 INFO L158 Benchmark]: CACSL2BoogieTranslator took 177.55ms. Allocated memory is still 181.4MB. Free memory was 125.3MB in the beginning and 152.4MB in the end (delta: -27.1MB). Peak memory consumption was 10.1MB. Max. memory is 8.0GB. [2022-01-31 03:30:03,776 INFO L158 Benchmark]: Boogie Preprocessor took 22.09ms. Allocated memory is still 181.4MB. Free memory was 152.4MB in the beginning and 150.9MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-01-31 03:30:03,777 INFO L158 Benchmark]: RCFGBuilder took 223.99ms. Allocated memory is still 181.4MB. Free memory was 150.9MB in the beginning and 140.4MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-01-31 03:30:03,777 INFO L158 Benchmark]: TraceAbstraction took 57661.72ms. Allocated memory was 181.4MB in the beginning and 220.2MB in the end (delta: 38.8MB). Free memory was 139.8MB in the beginning and 150.7MB in the end (delta: -10.9MB). Peak memory consumption was 119.6MB. Max. memory is 8.0GB. [2022-01-31 03:30:03,777 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 181.4MB. Free memory is still 141.9MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 177.55ms. Allocated memory is still 181.4MB. Free memory was 125.3MB in the beginning and 152.4MB in the end (delta: -27.1MB). Peak memory consumption was 10.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 22.09ms. Allocated memory is still 181.4MB. Free memory was 152.4MB in the beginning and 150.9MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 223.99ms. Allocated memory is still 181.4MB. Free memory was 150.9MB in the beginning and 140.4MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * TraceAbstraction took 57661.72ms. Allocated memory was 181.4MB in the beginning and 220.2MB in the end (delta: 38.8MB). Free memory was 139.8MB in the beginning and 150.7MB in the end (delta: -10.9MB). Peak memory consumption was 119.6MB. 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: 17]: 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 6 procedures, 37 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 57.6s, OverallIterations: 14, TraceHistogramMax: 23, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 24.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 6.1s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 5 mSolverCounterUnknown, 189 SdHoareTripleChecker+Valid, 20.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 134 mSDsluCounter, 2264 SdHoareTripleChecker+Invalid, 20.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1737 mSDsCounter, 291 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1229 IncrementalHoareTripleChecker+Invalid, 1525 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 291 mSolverCounterUnsat, 527 mSDtfsCounter, 1229 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1347 GetRequests, 1210 SyntacticMatches, 13 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 10.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=132occurred in iteration=13, InterpolantAutomatonStates: 98, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 14 MinimizatonAttempts, 47 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 17 LocationsWithAnnotation, 75 PreInvPairs, 128 NumberOfFragments, 1226 HoareAnnotationTreeSize, 75 FomulaSimplifications, 1538 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 17 FomulaSimplificationsInter, 26232 FormulaSimplificationTreeSizeReductionInter, 6.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 4.6s SatisfiabilityAnalysisTime, 19.6s InterpolantComputationTime, 799 NumberOfCodeBlocks, 693 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 1195 ConstructedInterpolants, 0 QuantifiedInterpolants, 6651 SizeOfPredicates, 30 NumberOfNonLiveVariables, 1730 ConjunctsInSsa, 239 ConjunctsInUnsatCore, 20 InterpolantComputations, 5 PerfectInterpolantSequences, 5290/5590 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 32]: Loop Invariant Derived loop invariant: ((((z * z + 12 == y * 12 + z * 6 && n * 6 + 6 == z) && (((0 <= 65536 + a && !(a % 65536 <= 32767)) && a < 0) || ((a < 65536 && 0 <= a) && a / -65536 <= (-1 * a + 32767) / 65536))) && z == 6) && n * n * n == x) || ((((n <= a + 1 && n * 6 + 6 == z) && (((0 <= 65536 + a && !(a % 65536 <= 32767)) && a < 0) || ((a < 65536 && 0 <= a) && a / -65536 <= (-1 * a + 32767) / 65536))) && 3 * (n * n) + n * 3 + 1 == y) && n * n * n == x) RESULT: Ultimate proved your program to be correct! [2022-01-31 03:30:03,802 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...