/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/loop-lit/jm2006_variant.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-b030c9e [2022-03-19 22:34:41,169 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-19 22:34:41,170 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-19 22:34:41,202 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-03-19 22:34:41,252 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 [2022-03-19 22:34:41,273 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-19 22:34:41,273 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-19 22:34:41,273 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-03-19 22:34:41,273 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-03-19 22:34:41,275 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-19 22:34:41,275 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-19 22:34:41,276 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-19 22:34:41,276 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-19 22:34:41,276 INFO L138 SettingsManager]: * Use SBE=true [2022-03-19 22:34:41,277 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-19 22:34:41,277 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-19 22:34:41,277 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-19 22:34:41,277 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-19 22:34:41,277 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-19 22:34:41,277 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-19 22:34:41,277 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-19 22:34:41,277 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-19 22:34:41,279 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-19 22:34:41,279 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-19 22:34:41,279 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-19 22:34:41,279 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-19 22:34:41,279 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-19 22:34:41,279 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-19 22:34:41,279 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-19 22:34:41,279 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-19 22:34:41,279 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-19 22:34:41,280 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-03-19 22:34:41,280 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-19 22:34:41,280 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-19 22:34:41,280 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-19 22:34:41,280 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-03-19 22:34:41,280 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-03-19 22:34:41,280 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-19 22:34:41,280 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-03-19 22:34:41,493 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-19 22:34:41,510 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-19 22:34:41,512 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-19 22:34:41,513 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-19 22:34:41,513 INFO L275 PluginConnector]: CDTParser initialized [2022-03-19 22:34:41,514 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/jm2006_variant.i [2022-03-19 22:34:41,560 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3c0d12d45/9a8fdcfccfe44079ac71d057ff4067df/FLAG56c1b6355 [2022-03-19 22:34:41,923 INFO L306 CDTParser]: Found 1 translation units. [2022-03-19 22:34:41,923 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/jm2006_variant.i [2022-03-19 22:34:41,929 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3c0d12d45/9a8fdcfccfe44079ac71d057ff4067df/FLAG56c1b6355 [2022-03-19 22:34:41,941 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3c0d12d45/9a8fdcfccfe44079ac71d057ff4067df [2022-03-19 22:34:41,944 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-19 22:34:41,945 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-03-19 22:34:41,945 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-19 22:34:41,945 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-19 22:34:41,948 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-19 22:34:41,948 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.03 10:34:41" (1/1) ... [2022-03-19 22:34:41,949 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77ecad5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 10:34:41, skipping insertion in model container [2022-03-19 22:34:41,949 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.03 10:34:41" (1/1) ... [2022-03-19 22:34:41,953 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-19 22:34:41,966 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-19 22:34:42,057 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/jm2006_variant.i[895,908] [2022-03-19 22:34:42,087 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-19 22:34:42,097 INFO L203 MainTranslator]: Completed pre-run [2022-03-19 22:34:42,105 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/jm2006_variant.i[895,908] [2022-03-19 22:34:42,108 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-19 22:34:42,116 INFO L208 MainTranslator]: Completed translation [2022-03-19 22:34:42,116 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 10:34:42 WrapperNode [2022-03-19 22:34:42,116 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-19 22:34:42,117 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-19 22:34:42,117 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-19 22:34:42,117 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-19 22:34:42,124 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 10:34:42" (1/1) ... [2022-03-19 22:34:42,125 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 10:34:42" (1/1) ... [2022-03-19 22:34:42,130 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 10:34:42" (1/1) ... [2022-03-19 22:34:42,130 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 10:34:42" (1/1) ... [2022-03-19 22:34:42,137 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 10:34:42" (1/1) ... [2022-03-19 22:34:42,140 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 10:34:42" (1/1) ... [2022-03-19 22:34:42,141 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 10:34:42" (1/1) ... [2022-03-19 22:34:42,142 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-19 22:34:42,142 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-19 22:34:42,142 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-19 22:34:42,142 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-19 22:34:42,143 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 10:34:42" (1/1) ... [2022-03-19 22:34:42,147 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-19 22:34:42,154 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 22:34:42,163 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) [2022-03-19 22:34:42,164 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 [2022-03-19 22:34:42,188 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-03-19 22:34:42,192 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-19 22:34:42,192 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-03-19 22:34:42,192 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-03-19 22:34:42,193 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-03-19 22:34:42,193 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-03-19 22:34:42,193 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-03-19 22:34:42,193 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-03-19 22:34:42,193 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2022-03-19 22:34:42,193 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2022-03-19 22:34:42,193 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-03-19 22:34:42,193 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-19 22:34:42,194 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-03-19 22:34:42,194 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-03-19 22:34:42,194 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-03-19 22:34:42,194 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-03-19 22:34:42,194 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-03-19 22:34:42,194 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-19 22:34:42,194 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-19 22:34:42,194 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-19 22:34:42,194 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-19 22:34:42,194 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-19 22:34:42,254 INFO L234 CfgBuilder]: Building ICFG [2022-03-19 22:34:42,268 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-19 22:34:42,398 INFO L275 CfgBuilder]: Performing block encoding [2022-03-19 22:34:42,402 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-19 22:34:42,402 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-03-19 22:34:42,404 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.03 10:34:42 BoogieIcfgContainer [2022-03-19 22:34:42,404 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-19 22:34:42,405 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-19 22:34:42,405 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-19 22:34:42,421 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-19 22:34:42,421 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.03 10:34:41" (1/3) ... [2022-03-19 22:34:42,422 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65ad4f6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.03 10:34:42, skipping insertion in model container [2022-03-19 22:34:42,422 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 10:34:42" (2/3) ... [2022-03-19 22:34:42,422 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65ad4f6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.03 10:34:42, skipping insertion in model container [2022-03-19 22:34:42,422 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.03 10:34:42" (3/3) ... [2022-03-19 22:34:42,423 INFO L111 eAbstractionObserver]: Analyzing ICFG jm2006_variant.i [2022-03-19 22:34:42,426 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-03-19 22:34:42,426 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-19 22:34:42,467 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-19 22:34:42,473 INFO L340 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 [2022-03-19 22:34:42,473 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-03-19 22:34:42,492 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 14 states have (on average 1.5) internal successors, (21), 16 states have internal predecessors, (21), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-03-19 22:34:42,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-03-19 22:34:42,495 INFO L491 BasicCegarLoop]: Found error trace [2022-03-19 22:34:42,495 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 22:34:42,496 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 22:34:42,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 22:34:42,503 INFO L85 PathProgramCache]: Analyzing trace with hash -522767122, now seen corresponding path program 1 times [2022-03-19 22:34:42,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 22:34:42,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093598536] [2022-03-19 22:34:42,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 22:34:42,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 22:34:42,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 22:34:42,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 22:34:42,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 22:34:42,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 22:34:42,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 22:34:42,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093598536] [2022-03-19 22:34:42,657 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093598536] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 22:34:42,657 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 22:34:42,658 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-19 22:34:42,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175366931] [2022-03-19 22:34:42,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 22:34:42,662 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-19 22:34:42,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-19 22:34:42,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-19 22:34:42,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-19 22:34:42,684 INFO L87 Difference]: Start difference. First operand has 22 states, 14 states have (on average 1.5) internal successors, (21), 16 states have internal predecessors, (21), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 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) [2022-03-19 22:34:42,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 22:34:42,712 INFO L93 Difference]: Finished difference Result 35 states and 42 transitions. [2022-03-19 22:34:42,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-19 22:34:42,713 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 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 14 [2022-03-19 22:34:42,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 22:34:42,717 INFO L225 Difference]: With dead ends: 35 [2022-03-19 22:34:42,717 INFO L226 Difference]: Without dead ends: 15 [2022-03-19 22:34:42,718 INFO L912 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 [2022-03-19 22:34:42,720 INFO L913 BasicCegarLoop]: 24 mSDtfsCounter, 16 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-19 22:34:42,721 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 27 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-19 22:34:42,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2022-03-19 22:34:42,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2022-03-19 22:34:42,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 10 states have (on average 1.1) internal successors, (11), 10 states have internal predecessors, (11), 3 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) [2022-03-19 22:34:42,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2022-03-19 22:34:42,740 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 14 [2022-03-19 22:34:42,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 22:34:42,740 INFO L478 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2022-03-19 22:34:42,740 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 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) [2022-03-19 22:34:42,740 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2022-03-19 22:34:42,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-03-19 22:34:42,741 INFO L491 BasicCegarLoop]: Found error trace [2022-03-19 22:34:42,741 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 22:34:42,741 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-19 22:34:42,741 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 22:34:42,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 22:34:42,742 INFO L85 PathProgramCache]: Analyzing trace with hash -637283726, now seen corresponding path program 1 times [2022-03-19 22:34:42,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 22:34:42,742 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304120003] [2022-03-19 22:34:42,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 22:34:42,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 22:34:42,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 22:34:42,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 22:34:42,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 22:34:42,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 22:34:42,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 22:34:42,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304120003] [2022-03-19 22:34:42,934 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304120003] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 22:34:42,934 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 22:34:42,934 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-19 22:34:42,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978791235] [2022-03-19 22:34:42,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 22:34:42,935 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-19 22:34:42,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-19 22:34:42,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-19 22:34:42,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-03-19 22:34:42,936 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 states have internal predecessors, (10), 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) [2022-03-19 22:34:43,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 22:34:43,031 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2022-03-19 22:34:43,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-19 22:34:43,032 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 states have internal predecessors, (10), 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 14 [2022-03-19 22:34:43,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 22:34:43,032 INFO L225 Difference]: With dead ends: 22 [2022-03-19 22:34:43,032 INFO L226 Difference]: Without dead ends: 16 [2022-03-19 22:34:43,033 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2022-03-19 22:34:43,034 INFO L913 BasicCegarLoop]: 11 mSDtfsCounter, 16 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-19 22:34:43,034 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 33 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-19 22:34:43,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2022-03-19 22:34:43,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2022-03-19 22:34:43,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 3 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) [2022-03-19 22:34:43,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2022-03-19 22:34:43,038 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 14 [2022-03-19 22:34:43,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 22:34:43,038 INFO L478 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2022-03-19 22:34:43,038 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 states have internal predecessors, (10), 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) [2022-03-19 22:34:43,038 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2022-03-19 22:34:43,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-03-19 22:34:43,039 INFO L491 BasicCegarLoop]: Found error trace [2022-03-19 22:34:43,039 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 22:34:43,039 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-19 22:34:43,039 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 22:34:43,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 22:34:43,040 INFO L85 PathProgramCache]: Analyzing trace with hash -1050868340, now seen corresponding path program 1 times [2022-03-19 22:34:43,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 22:34:43,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908202049] [2022-03-19 22:34:43,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 22:34:43,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 22:34:43,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 22:34:43,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 22:34:43,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 22:34:43,198 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 22:34:43,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 22:34:43,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908202049] [2022-03-19 22:34:43,199 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908202049] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-19 22:34:43,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [634741730] [2022-03-19 22:34:43,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 22:34:43,199 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 22:34:43,199 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 22:34:43,201 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) [2022-03-19 22:34:43,202 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-03-19 22:34:43,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 22:34:43,234 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-19 22:34:43,237 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-19 22:34:43,397 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 22:34:43,397 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-19 22:34:43,507 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 22:34:43,507 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [634741730] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-19 22:34:43,508 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-19 22:34:43,508 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 17 [2022-03-19 22:34:43,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977713027] [2022-03-19 22:34:43,508 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-19 22:34:43,508 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-03-19 22:34:43,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-19 22:34:43,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-03-19 22:34:43,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2022-03-19 22:34:43,509 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand has 17 states, 15 states have (on average 1.4) internal successors, (21), 14 states have internal predecessors, (21), 3 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 22:34:43,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 22:34:43,781 INFO L93 Difference]: Finished difference Result 27 states and 29 transitions. [2022-03-19 22:34:43,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-19 22:34:43,781 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 1.4) internal successors, (21), 14 states have internal predecessors, (21), 3 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2022-03-19 22:34:43,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 22:34:43,782 INFO L225 Difference]: With dead ends: 27 [2022-03-19 22:34:43,782 INFO L226 Difference]: Without dead ends: 19 [2022-03-19 22:34:43,783 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 21 SyntacticMatches, 3 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=154, Invalid=602, Unknown=0, NotChecked=0, Total=756 [2022-03-19 22:34:43,783 INFO L913 BasicCegarLoop]: 11 mSDtfsCounter, 27 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-19 22:34:43,784 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 48 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-19 22:34:43,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-03-19 22:34:43,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2022-03-19 22:34:43,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 14 states have (on average 1.0714285714285714) internal successors, (15), 14 states have internal predecessors, (15), 3 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) [2022-03-19 22:34:43,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2022-03-19 22:34:43,787 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 15 [2022-03-19 22:34:43,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 22:34:43,787 INFO L478 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2022-03-19 22:34:43,787 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 1.4) internal successors, (21), 14 states have internal predecessors, (21), 3 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 22:34:43,787 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2022-03-19 22:34:43,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-19 22:34:43,788 INFO L491 BasicCegarLoop]: Found error trace [2022-03-19 22:34:43,788 INFO L499 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 22:34:43,806 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-03-19 22:34:44,001 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 22:34:44,002 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 22:34:44,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 22:34:44,002 INFO L85 PathProgramCache]: Analyzing trace with hash -2142975758, now seen corresponding path program 2 times [2022-03-19 22:34:44,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 22:34:44,002 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753390868] [2022-03-19 22:34:44,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 22:34:44,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 22:34:44,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 22:34:44,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 22:34:44,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 22:34:44,200 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-19 22:34:44,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 22:34:44,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753390868] [2022-03-19 22:34:44,201 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753390868] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-19 22:34:44,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [483662912] [2022-03-19 22:34:44,201 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-19 22:34:44,202 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 22:34:44,202 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 22:34:44,203 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) [2022-03-19 22:34:44,255 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-03-19 22:34:44,259 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-19 22:34:44,259 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-19 22:34:44,260 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 37 conjunts are in the unsatisfiable core [2022-03-19 22:34:44,261 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-19 22:34:44,454 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 22:34:44,455 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-19 22:34:44,679 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 22:34:44,679 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [483662912] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-19 22:34:44,679 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-19 22:34:44,680 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 25 [2022-03-19 22:34:44,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061919422] [2022-03-19 22:34:44,680 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-19 22:34:44,680 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-03-19 22:34:44,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-19 22:34:44,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-03-19 22:34:44,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=486, Unknown=0, NotChecked=0, Total=600 [2022-03-19 22:34:44,685 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand has 25 states, 23 states have (on average 1.3043478260869565) internal successors, (30), 22 states have internal predecessors, (30), 3 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 22:34:44,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 22:34:44,885 INFO L93 Difference]: Finished difference Result 22 states and 23 transitions. [2022-03-19 22:34:44,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-03-19 22:34:44,885 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 23 states have (on average 1.3043478260869565) internal successors, (30), 22 states have internal predecessors, (30), 3 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2022-03-19 22:34:44,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 22:34:44,885 INFO L225 Difference]: With dead ends: 22 [2022-03-19 22:34:44,885 INFO L226 Difference]: Without dead ends: 0 [2022-03-19 22:34:44,888 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 22 SyntacticMatches, 3 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 297 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=264, Invalid=1068, Unknown=0, NotChecked=0, Total=1332 [2022-03-19 22:34:44,889 INFO L913 BasicCegarLoop]: 9 mSDtfsCounter, 35 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-19 22:34:44,889 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 56 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-19 22:34:44,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-03-19 22:34:44,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-03-19 22:34:44,890 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) [2022-03-19 22:34:44,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-03-19 22:34:44,890 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2022-03-19 22:34:44,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 22:34:44,890 INFO L478 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-03-19 22:34:44,890 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 23 states have (on average 1.3043478260869565) internal successors, (30), 22 states have internal predecessors, (30), 3 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 22:34:44,890 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-03-19 22:34:44,890 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-03-19 22:34:44,892 INFO L788 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-03-19 22:34:44,927 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-03-19 22:34:45,107 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-03-19 22:34:45,109 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-03-19 22:34:45,217 INFO L882 garLoopResultBuilder]: For program point reach_errorEXIT(line 12) no Hoare annotation was computed. [2022-03-19 22:34:45,217 INFO L882 garLoopResultBuilder]: For program point reach_errorENTRY(line 12) no Hoare annotation was computed. [2022-03-19 22:34:45,217 INFO L882 garLoopResultBuilder]: For program point L12-1(line 12) no Hoare annotation was computed. [2022-03-19 22:34:45,217 INFO L882 garLoopResultBuilder]: For program point L15(line 15) no Hoare annotation was computed. [2022-03-19 22:34:45,217 INFO L882 garLoopResultBuilder]: For program point assume_abort_if_notENTRY(lines 14 16) no Hoare annotation was computed. [2022-03-19 22:34:45,217 INFO L882 garLoopResultBuilder]: For program point L15-2(lines 14 16) no Hoare annotation was computed. [2022-03-19 22:34:45,218 INFO L882 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 14 16) no Hoare annotation was computed. [2022-03-19 22:34:45,218 INFO L878 garLoopResultBuilder]: At program point L33-2(lines 33 37) the Hoare annotation is: (let ((.cse1 (+ main_~j~0 main_~x~0)) (.cse0 (+ main_~i~0 main_~z~0 main_~y~0))) (and (<= .cse0 .cse1) (<= .cse1 .cse0))) [2022-03-19 22:34:45,218 INFO L882 garLoopResultBuilder]: For program point L33-3(lines 24 42) no Hoare annotation was computed. [2022-03-19 22:34:45,218 INFO L882 garLoopResultBuilder]: For program point L29(line 29) no Hoare annotation was computed. [2022-03-19 22:34:45,218 INFO L882 garLoopResultBuilder]: For program point mainEXIT(lines 24 42) no Hoare annotation was computed. [2022-03-19 22:34:45,218 INFO L882 garLoopResultBuilder]: For program point mainFINAL(lines 24 42) no Hoare annotation was computed. [2022-03-19 22:34:45,218 INFO L882 garLoopResultBuilder]: For program point L38(lines 38 40) no Hoare annotation was computed. [2022-03-19 22:34:45,218 INFO L885 garLoopResultBuilder]: At program point mainENTRY(lines 24 42) the Hoare annotation is: true [2022-03-19 22:34:45,218 INFO L882 garLoopResultBuilder]: For program point L28(line 28) no Hoare annotation was computed. [2022-03-19 22:34:45,218 INFO L878 garLoopResultBuilder]: At program point L39(line 39) the Hoare annotation is: (let ((.cse0 (< 0 (+ main_~z~0 main_~y~0 1)))) (or (and (or (not (= main_~i~0 main_~j~0)) (not (= main_~x~0 1))) (<= (+ main_~z~0 main_~y~0) 0) .cse0) (and (= main_~z~0 0) (<= main_~y~0 0) (= main_~i~0 0) .cse0))) [2022-03-19 22:34:45,218 INFO L882 garLoopResultBuilder]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2022-03-19 22:34:45,219 INFO L878 garLoopResultBuilder]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|)) [2022-03-19 22:34:45,219 INFO L882 garLoopResultBuilder]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2022-03-19 22:34:45,219 INFO L882 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-03-19 22:34:45,219 INFO L885 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: true [2022-03-19 22:34:45,219 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2022-03-19 22:34:45,219 INFO L882 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-03-19 22:34:45,219 INFO L882 garLoopResultBuilder]: For program point L18-2(lines 17 22) no Hoare annotation was computed. [2022-03-19 22:34:45,219 INFO L885 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 17 22) the Hoare annotation is: true [2022-03-19 22:34:45,219 INFO L882 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 17 22) no Hoare annotation was computed. [2022-03-19 22:34:45,219 INFO L882 garLoopResultBuilder]: For program point L19(line 19) no Hoare annotation was computed. [2022-03-19 22:34:45,219 INFO L882 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2022-03-19 22:34:45,219 INFO L882 garLoopResultBuilder]: For program point L18(lines 18 20) no Hoare annotation was computed. [2022-03-19 22:34:45,222 INFO L719 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2022-03-19 22:34:45,222 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-19 22:34:45,244 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.03 10:34:45 BoogieIcfgContainer [2022-03-19 22:34:45,244 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-19 22:34:45,244 INFO L158 Benchmark]: Toolchain (without parser) took 3299.47ms. Allocated memory was 233.8MB in the beginning and 324.0MB in the end (delta: 90.2MB). Free memory was 204.1MB in the beginning and 245.8MB in the end (delta: -41.7MB). Peak memory consumption was 47.8MB. Max. memory is 8.0GB. [2022-03-19 22:34:45,244 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 233.8MB. Free memory is still 193.4MB. There was no memory consumed. Max. memory is 8.0GB. [2022-03-19 22:34:45,245 INFO L158 Benchmark]: CACSL2BoogieTranslator took 171.09ms. Allocated memory is still 233.8MB. Free memory was 204.0MB in the beginning and 207.1MB in the end (delta: -3.1MB). Peak memory consumption was 9.0MB. Max. memory is 8.0GB. [2022-03-19 22:34:45,245 INFO L158 Benchmark]: Boogie Preprocessor took 24.81ms. Allocated memory is still 233.8MB. Free memory was 207.1MB in the beginning and 205.7MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-03-19 22:34:45,245 INFO L158 Benchmark]: RCFGBuilder took 261.49ms. Allocated memory is still 233.8MB. Free memory was 205.5MB in the beginning and 195.0MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-03-19 22:34:45,245 INFO L158 Benchmark]: TraceAbstraction took 2839.04ms. Allocated memory was 233.8MB in the beginning and 324.0MB in the end (delta: 90.2MB). Free memory was 194.5MB in the beginning and 245.8MB in the end (delta: -51.3MB). Peak memory consumption was 39.8MB. Max. memory is 8.0GB. [2022-03-19 22:34:45,246 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 233.8MB. Free memory is still 193.4MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 171.09ms. Allocated memory is still 233.8MB. Free memory was 204.0MB in the beginning and 207.1MB in the end (delta: -3.1MB). Peak memory consumption was 9.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 24.81ms. Allocated memory is still 233.8MB. Free memory was 207.1MB in the beginning and 205.7MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 261.49ms. Allocated memory is still 233.8MB. Free memory was 205.5MB in the beginning and 195.0MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * TraceAbstraction took 2839.04ms. Allocated memory was 233.8MB in the beginning and 324.0MB in the end (delta: 90.2MB). Free memory was 194.5MB in the beginning and 245.8MB in the end (delta: -51.3MB). Peak memory consumption was 39.8MB. 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: 19]: 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, 29 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.8s, OverallIterations: 4, TraceHistogramMax: 4, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 95 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 94 mSDsluCounter, 164 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 109 mSDsCounter, 40 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 248 IncrementalHoareTripleChecker+Invalid, 288 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 40 mSolverCounterUnsat, 55 mSDtfsCounter, 248 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 129 GetRequests, 50 SyntacticMatches, 6 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 463 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred in iteration=0, InterpolantAutomatonStates: 40, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 12 PreInvPairs, 22 NumberOfFragments, 66 HoareAnnotationTreeSize, 12 FomulaSimplifications, 21 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 318 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 94 NumberOfCodeBlocks, 94 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 119 ConstructedInterpolants, 0 QuantifiedInterpolants, 840 SizeOfPredicates, 12 NumberOfNonLiveVariables, 165 ConjunctsInSsa, 56 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 1/33 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: 33]: Loop Invariant Derived loop invariant: i + z + y <= j + x && j + x <= i + z + y RESULT: Ultimate proved your program to be correct! [2022-03-19 22:34:45,285 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...