/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/cggmp2005.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-5d317bd [2022-03-18 12:12:13,450 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-18 12:12:13,478 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-18 12:12:13,515 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-03-18 12:12:13,554 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 [2022-03-18 12:12:13,576 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-18 12:12:13,576 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-18 12:12:13,576 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-03-18 12:12:13,577 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-03-18 12:12:13,577 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-18 12:12:13,577 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-18 12:12:13,578 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-18 12:12:13,578 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-18 12:12:13,578 INFO L138 SettingsManager]: * Use SBE=true [2022-03-18 12:12:13,578 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-18 12:12:13,579 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-18 12:12:13,579 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-18 12:12:13,579 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-18 12:12:13,579 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-18 12:12:13,579 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-18 12:12:13,579 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-18 12:12:13,579 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-18 12:12:13,580 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-18 12:12:13,580 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-18 12:12:13,580 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-18 12:12:13,580 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-18 12:12:13,581 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-18 12:12:13,581 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-18 12:12:13,581 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-18 12:12:13,581 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-18 12:12:13,581 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-18 12:12:13,581 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-03-18 12:12:13,581 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-18 12:12:13,581 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-18 12:12:13,582 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-18 12:12:13,582 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-03-18 12:12:13,582 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-03-18 12:12:13,582 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-18 12:12:13,582 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-03-18 12:12:13,770 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-18 12:12:13,794 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-18 12:12:13,795 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-18 12:12:13,796 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-18 12:12:13,796 INFO L275 PluginConnector]: CDTParser initialized [2022-03-18 12:12:13,797 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/cggmp2005.i [2022-03-18 12:12:13,836 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/808ec99ca/8f762e01ba3346f2898156a560888f14/FLAG570696724 [2022-03-18 12:12:14,191 INFO L306 CDTParser]: Found 1 translation units. [2022-03-18 12:12:14,191 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/cggmp2005.i [2022-03-18 12:12:14,197 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/808ec99ca/8f762e01ba3346f2898156a560888f14/FLAG570696724 [2022-03-18 12:12:14,208 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/808ec99ca/8f762e01ba3346f2898156a560888f14 [2022-03-18 12:12:14,209 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-18 12:12:14,211 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-03-18 12:12:14,229 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-18 12:12:14,230 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-18 12:12:14,232 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-18 12:12:14,233 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.03 12:12:14" (1/1) ... [2022-03-18 12:12:14,233 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3171e25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 12:12:14, skipping insertion in model container [2022-03-18 12:12:14,233 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.03 12:12:14" (1/1) ... [2022-03-18 12:12:14,238 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-18 12:12:14,247 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-18 12:12:14,363 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/cggmp2005.i[895,908] [2022-03-18 12:12:14,371 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-18 12:12:14,377 INFO L203 MainTranslator]: Completed pre-run [2022-03-18 12:12:14,385 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/cggmp2005.i[895,908] [2022-03-18 12:12:14,388 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-18 12:12:14,396 INFO L208 MainTranslator]: Completed translation [2022-03-18 12:12:14,397 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 12:12:14 WrapperNode [2022-03-18 12:12:14,397 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-18 12:12:14,397 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-18 12:12:14,397 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-18 12:12:14,397 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-18 12:12:14,404 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 12:12:14" (1/1) ... [2022-03-18 12:12:14,404 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 12:12:14" (1/1) ... [2022-03-18 12:12:14,408 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 12:12:14" (1/1) ... [2022-03-18 12:12:14,409 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 12:12:14" (1/1) ... [2022-03-18 12:12:14,412 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 12:12:14" (1/1) ... [2022-03-18 12:12:14,415 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 12:12:14" (1/1) ... [2022-03-18 12:12:14,418 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 12:12:14" (1/1) ... [2022-03-18 12:12:14,422 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-18 12:12:14,422 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-18 12:12:14,422 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-18 12:12:14,422 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-18 12:12:14,423 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 12:12:14" (1/1) ... [2022-03-18 12:12:14,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-18 12:12:14,433 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 12:12:14,462 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) [2022-03-18 12:12:14,492 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 [2022-03-18 12:12:14,507 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-03-18 12:12:14,507 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-18 12:12:14,507 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-03-18 12:12:14,508 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-03-18 12:12:14,508 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-03-18 12:12:14,508 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-03-18 12:12:14,509 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-03-18 12:12:14,509 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-03-18 12:12:14,509 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2022-03-18 12:12:14,509 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2022-03-18 12:12:14,509 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-03-18 12:12:14,509 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-18 12:12:14,509 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-03-18 12:12:14,509 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-03-18 12:12:14,509 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-03-18 12:12:14,509 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-03-18 12:12:14,509 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-03-18 12:12:14,509 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-18 12:12:14,509 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-18 12:12:14,510 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-18 12:12:14,510 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-18 12:12:14,510 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-18 12:12:14,556 INFO L234 CfgBuilder]: Building ICFG [2022-03-18 12:12:14,557 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-18 12:12:14,636 INFO L275 CfgBuilder]: Performing block encoding [2022-03-18 12:12:14,639 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-18 12:12:14,640 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-03-18 12:12:14,641 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.03 12:12:14 BoogieIcfgContainer [2022-03-18 12:12:14,641 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-18 12:12:14,642 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-18 12:12:14,642 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-18 12:12:14,656 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-18 12:12:14,657 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.03 12:12:14" (1/3) ... [2022-03-18 12:12:14,657 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32184c72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.03 12:12:14, skipping insertion in model container [2022-03-18 12:12:14,657 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 12:12:14" (2/3) ... [2022-03-18 12:12:14,657 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32184c72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.03 12:12:14, skipping insertion in model container [2022-03-18 12:12:14,657 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.03 12:12:14" (3/3) ... [2022-03-18 12:12:14,658 INFO L111 eAbstractionObserver]: Analyzing ICFG cggmp2005.i [2022-03-18 12:12:14,661 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-03-18 12:12:14,661 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-18 12:12:14,687 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-18 12:12:14,691 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 [2022-03-18 12:12:14,691 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-03-18 12:12:14,700 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 12 states have internal predecessors, (15), 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) [2022-03-18 12:12:14,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-03-18 12:12:14,702 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:12:14,702 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:12:14,703 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:12:14,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:12:14,706 INFO L85 PathProgramCache]: Analyzing trace with hash -1817730928, now seen corresponding path program 1 times [2022-03-18 12:12:14,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:12:14,711 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584325371] [2022-03-18 12:12:14,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:12:14,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:12:14,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:14,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:12:14,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:14,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 12:12:14,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:12:14,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584325371] [2022-03-18 12:12:14,831 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584325371] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 12:12:14,831 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 12:12:14,831 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-18 12:12:14,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491460233] [2022-03-18 12:12:14,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 12:12:14,835 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-18 12:12:14,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:12:14,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-18 12:12:14,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-18 12:12:14,855 INFO L87 Difference]: Start difference. First operand has 19 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 12 states have internal predecessors, (15), 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 4 states, 4 states have (on average 1.75) internal successors, (7), 3 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) [2022-03-18 12:12:14,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 12:12:14,917 INFO L93 Difference]: Finished difference Result 32 states and 37 transitions. [2022-03-18 12:12:14,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-18 12:12:14,918 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 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 [2022-03-18 12:12:14,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 12:12:14,922 INFO L225 Difference]: With dead ends: 32 [2022-03-18 12:12:14,922 INFO L226 Difference]: Without dead ends: 13 [2022-03-18 12:12:14,924 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-18 12:12:14,926 INFO L912 BasicCegarLoop]: 17 mSDtfsCounter, 10 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-18 12:12:14,927 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 26 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-18 12:12:14,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2022-03-18 12:12:14,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2022-03-18 12:12:14,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 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) [2022-03-18 12:12:14,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2022-03-18 12:12:14,974 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 11 [2022-03-18 12:12:14,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 12:12:14,974 INFO L478 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2022-03-18 12:12:14,974 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 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) [2022-03-18 12:12:14,975 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2022-03-18 12:12:14,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-03-18 12:12:14,975 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:12:14,975 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:12:14,975 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-18 12:12:14,975 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:12:14,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:12:14,976 INFO L85 PathProgramCache]: Analyzing trace with hash -480588846, now seen corresponding path program 1 times [2022-03-18 12:12:14,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:12:14,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453019721] [2022-03-18 12:12:14,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:12:14,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:12:14,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:15,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:12:15,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:15,109 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 12:12:15,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:12:15,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453019721] [2022-03-18 12:12:15,110 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453019721] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 12:12:15,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1077439896] [2022-03-18 12:12:15,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:12:15,110 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:12:15,110 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 12:12:15,113 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) [2022-03-18 12:12:15,115 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-03-18 12:12:15,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:15,169 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 5 conjunts are in the unsatisfiable core [2022-03-18 12:12:15,172 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 12:12:15,298 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 12:12:15,298 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 12:12:15,340 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 12:12:15,340 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1077439896] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 12:12:15,340 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 12:12:15,340 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 9 [2022-03-18 12:12:15,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684242114] [2022-03-18 12:12:15,341 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 12:12:15,341 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-18 12:12:15,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:12:15,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-18 12:12:15,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2022-03-18 12:12:15,342 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand has 9 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 8 states have internal predecessors, (15), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 12:12:15,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 12:12:15,407 INFO L93 Difference]: Finished difference Result 21 states and 23 transitions. [2022-03-18 12:12:15,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-18 12:12:15,408 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 8 states have internal predecessors, (15), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2022-03-18 12:12:15,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 12:12:15,409 INFO L225 Difference]: With dead ends: 21 [2022-03-18 12:12:15,409 INFO L226 Difference]: Without dead ends: 16 [2022-03-18 12:12:15,409 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=95, Unknown=0, NotChecked=0, Total=156 [2022-03-18 12:12:15,410 INFO L912 BasicCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-18 12:12:15,411 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 33 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-18 12:12:15,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2022-03-18 12:12:15,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2022-03-18 12:12:15,413 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) [2022-03-18 12:12:15,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2022-03-18 12:12:15,414 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 12 [2022-03-18 12:12:15,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 12:12:15,414 INFO L478 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2022-03-18 12:12:15,414 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 8 states have internal predecessors, (15), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 12:12:15,414 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2022-03-18 12:12:15,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-03-18 12:12:15,415 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:12:15,415 INFO L500 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:12:15,435 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-03-18 12:12:15,634 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:12:15,634 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:12:15,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:12:15,635 INFO L85 PathProgramCache]: Analyzing trace with hash 2092523792, now seen corresponding path program 2 times [2022-03-18 12:12:15,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:12:15,635 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826750560] [2022-03-18 12:12:15,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:12:15,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:12:15,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:15,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:12:15,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:15,746 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 12:12:15,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:12:15,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826750560] [2022-03-18 12:12:15,747 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826750560] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 12:12:15,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2092765449] [2022-03-18 12:12:15,747 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 12:12:15,747 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:12:15,747 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 12:12:15,756 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) [2022-03-18 12:12:15,779 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-03-18 12:12:15,833 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-18 12:12:15,833 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 12:12:15,834 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 13 conjunts are in the unsatisfiable core [2022-03-18 12:12:15,836 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 12:12:16,022 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 12:12:16,022 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 12:12:16,129 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 12:12:16,131 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2092765449] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 12:12:16,131 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 12:12:16,132 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 16 [2022-03-18 12:12:16,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601361625] [2022-03-18 12:12:16,132 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 12:12:16,133 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-03-18 12:12:16,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:12:16,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-03-18 12:12:16,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2022-03-18 12:12:16,137 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand has 16 states, 16 states have (on average 1.1875) internal successors, (19), 13 states have internal predecessors, (19), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 12:12:16,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 12:12:16,312 INFO L93 Difference]: Finished difference Result 20 states and 21 transitions. [2022-03-18 12:12:16,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-18 12:12:16,312 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.1875) internal successors, (19), 13 states have internal predecessors, (19), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2022-03-18 12:12:16,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 12:12:16,312 INFO L225 Difference]: With dead ends: 20 [2022-03-18 12:12:16,313 INFO L226 Difference]: Without dead ends: 0 [2022-03-18 12:12:16,314 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 20 SyntacticMatches, 6 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=77, Invalid=429, Unknown=0, NotChecked=0, Total=506 [2022-03-18 12:12:16,316 INFO L912 BasicCegarLoop]: 7 mSDtfsCounter, 7 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-18 12:12:16,318 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 59 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-18 12:12:16,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-03-18 12:12:16,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-03-18 12:12:16,319 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) [2022-03-18 12:12:16,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-03-18 12:12:16,320 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2022-03-18 12:12:16,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 12:12:16,320 INFO L478 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-03-18 12:12:16,320 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.1875) internal successors, (19), 13 states have internal predecessors, (19), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 12:12:16,320 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-03-18 12:12:16,320 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-03-18 12:12:16,323 INFO L788 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-03-18 12:12:16,348 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-03-18 12:12:16,548 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,SelfDestructingSolverStorable2 [2022-03-18 12:12:16,550 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-03-18 12:12:16,603 INFO L882 garLoopResultBuilder]: For program point reach_errorEXIT(line 12) no Hoare annotation was computed. [2022-03-18 12:12:16,603 INFO L882 garLoopResultBuilder]: For program point reach_errorENTRY(line 12) no Hoare annotation was computed. [2022-03-18 12:12:16,604 INFO L882 garLoopResultBuilder]: For program point L12-1(line 12) no Hoare annotation was computed. [2022-03-18 12:12:16,604 INFO L882 garLoopResultBuilder]: For program point L15(line 15) no Hoare annotation was computed. [2022-03-18 12:12:16,605 INFO L882 garLoopResultBuilder]: For program point assume_abort_if_notENTRY(lines 14 16) no Hoare annotation was computed. [2022-03-18 12:12:16,605 INFO L882 garLoopResultBuilder]: For program point L15-2(lines 14 16) no Hoare annotation was computed. [2022-03-18 12:12:16,605 INFO L882 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 14 16) no Hoare annotation was computed. [2022-03-18 12:12:16,605 INFO L882 garLoopResultBuilder]: For program point L32(line 32) no Hoare annotation was computed. [2022-03-18 12:12:16,606 INFO L885 garLoopResultBuilder]: At program point mainENTRY(lines 24 34) the Hoare annotation is: true [2022-03-18 12:12:16,609 INFO L878 garLoopResultBuilder]: At program point L28-2(lines 28 31) the Hoare annotation is: (let ((.cse0 (<= 7 main_~i~0))) (or (and (<= (+ main_~i~0 3) main_~j~0) (<= 5 main_~i~0) (= main_~j~0 8)) (and (<= main_~j~0 6) (< 5 main_~j~0) .cse0) (and (= main_~i~0 1) (= main_~j~0 10)) (and (<= main_~i~0 main_~j~0) (= 7 main_~j~0) .cse0) (and (= main_~j~0 9) (<= 3 main_~i~0) (<= main_~i~0 3)))) [2022-03-18 12:12:16,609 INFO L878 garLoopResultBuilder]: At program point L28-3(lines 28 31) the Hoare annotation is: (and (<= main_~j~0 6) (< 5 main_~j~0) (<= 7 main_~i~0)) [2022-03-18 12:12:16,609 INFO L882 garLoopResultBuilder]: For program point mainEXIT(lines 24 34) no Hoare annotation was computed. [2022-03-18 12:12:16,610 INFO L882 garLoopResultBuilder]: For program point mainFINAL(lines 24 34) no Hoare annotation was computed. [2022-03-18 12:12:16,610 INFO L882 garLoopResultBuilder]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2022-03-18 12:12:16,610 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|)) [2022-03-18 12:12:16,612 INFO L882 garLoopResultBuilder]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2022-03-18 12:12:16,612 INFO L882 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-03-18 12:12:16,615 INFO L885 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: true [2022-03-18 12:12:16,616 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2022-03-18 12:12:16,616 INFO L882 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-03-18 12:12:16,616 INFO L882 garLoopResultBuilder]: For program point L18-2(lines 17 22) no Hoare annotation was computed. [2022-03-18 12:12:16,617 INFO L885 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 17 22) the Hoare annotation is: true [2022-03-18 12:12:16,617 INFO L882 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 17 22) no Hoare annotation was computed. [2022-03-18 12:12:16,617 INFO L882 garLoopResultBuilder]: For program point L19(line 19) no Hoare annotation was computed. [2022-03-18 12:12:16,618 INFO L882 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2022-03-18 12:12:16,618 INFO L882 garLoopResultBuilder]: For program point L18(lines 18 20) no Hoare annotation was computed. [2022-03-18 12:12:16,622 INFO L718 BasicCegarLoop]: Path program histogram: [2, 1] [2022-03-18 12:12:16,623 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-18 12:12:16,645 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.03 12:12:16 BoogieIcfgContainer [2022-03-18 12:12:16,646 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-18 12:12:16,648 INFO L158 Benchmark]: Toolchain (without parser) took 2435.41ms. Allocated memory was 194.0MB in the beginning and 232.8MB in the end (delta: 38.8MB). Free memory was 141.1MB in the beginning and 173.7MB in the end (delta: -32.7MB). Peak memory consumption was 6.1MB. Max. memory is 8.0GB. [2022-03-18 12:12:16,648 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 194.0MB. Free memory is still 157.2MB. There was no memory consumed. Max. memory is 8.0GB. [2022-03-18 12:12:16,648 INFO L158 Benchmark]: CACSL2BoogieTranslator took 167.38ms. Allocated memory is still 194.0MB. Free memory was 170.8MB in the beginning and 167.9MB in the end (delta: 2.8MB). Peak memory consumption was 8.0MB. Max. memory is 8.0GB. [2022-03-18 12:12:16,649 INFO L158 Benchmark]: Boogie Preprocessor took 24.31ms. Allocated memory is still 194.0MB. Free memory was 167.9MB in the beginning and 166.7MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-03-18 12:12:16,649 INFO L158 Benchmark]: RCFGBuilder took 218.59ms. Allocated memory is still 194.0MB. Free memory was 166.7MB in the beginning and 156.9MB in the end (delta: 9.8MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2022-03-18 12:12:16,650 INFO L158 Benchmark]: TraceAbstraction took 2004.01ms. Allocated memory was 194.0MB in the beginning and 232.8MB in the end (delta: 38.8MB). Free memory was 156.5MB in the beginning and 173.7MB in the end (delta: -17.3MB). Peak memory consumption was 22.3MB. Max. memory is 8.0GB. [2022-03-18 12:12:16,651 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 194.0MB. Free memory is still 157.2MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 167.38ms. Allocated memory is still 194.0MB. Free memory was 170.8MB in the beginning and 167.9MB in the end (delta: 2.8MB). Peak memory consumption was 8.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 24.31ms. Allocated memory is still 194.0MB. Free memory was 167.9MB in the beginning and 166.7MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 218.59ms. Allocated memory is still 194.0MB. Free memory was 166.7MB in the beginning and 156.9MB in the end (delta: 9.8MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * TraceAbstraction took 2004.01ms. Allocated memory was 194.0MB in the beginning and 232.8MB in the end (delta: 38.8MB). Free memory was 156.5MB in the beginning and 173.7MB in the end (delta: -17.3MB). Peak memory consumption was 22.3MB. 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, 26 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.9s, OverallIterations: 3, TraceHistogramMax: 4, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 24 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 23 mSDsluCounter, 118 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 83 mSDsCounter, 22 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 112 IncrementalHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 22 mSolverCounterUnsat, 35 mSDtfsCounter, 112 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 86 GetRequests, 45 SyntacticMatches, 6 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred in iteration=0, InterpolantAutomatonStates: 21, 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, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 10 PreInvPairs, 16 NumberOfFragments, 71 HoareAnnotationTreeSize, 10 FomulaSimplifications, 11 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 65 NumberOfCodeBlocks, 65 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 85 ConstructedInterpolants, 0 QuantifiedInterpolants, 237 SizeOfPredicates, 3 NumberOfNonLiveVariables, 123 ConjunctsInSsa, 18 ConjunctsInUnsatCore, 7 InterpolantComputations, 1 PerfectInterpolantSequences, 3/33 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: 28]: Loop Invariant Derived loop invariant: (((((i + 3 <= j && 5 <= i) && j == 8) || ((j <= 6 && 5 < j) && 7 <= i)) || (i == 1 && j == 10)) || ((i <= j && 7 == j) && 7 <= i)) || ((j == 9 && 3 <= i) && i <= 3) RESULT: Ultimate proved your program to be correct! [2022-03-18 12:12:16,687 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...