/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/loops/trex03-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-b030c9e [2022-03-19 22:08:12,158 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-19 22:08:12,159 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-19 22:08:12,183 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-03-19 22:08:12,224 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 22:08:12,238 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-19 22:08:12,238 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-19 22:08:12,239 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-03-19 22:08:12,239 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-03-19 22:08:12,239 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-19 22:08:12,239 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-19 22:08:12,240 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-19 22:08:12,240 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-19 22:08:12,240 INFO L138 SettingsManager]: * Use SBE=true [2022-03-19 22:08:12,240 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-19 22:08:12,240 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-19 22:08:12,240 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-19 22:08:12,240 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-19 22:08:12,240 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-19 22:08:12,240 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-19 22:08:12,240 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-19 22:08:12,240 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-19 22:08:12,241 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-19 22:08:12,241 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-19 22:08:12,241 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-19 22:08:12,241 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-19 22:08:12,241 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-19 22:08:12,241 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-19 22:08:12,241 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-19 22:08:12,241 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-19 22:08:12,241 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-19 22:08:12,241 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-03-19 22:08:12,241 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-19 22:08:12,241 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-19 22:08:12,242 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-19 22:08:12,242 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-03-19 22:08:12,242 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-03-19 22:08:12,242 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-19 22:08:12,242 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-03-19 22:08:12,408 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-19 22:08:12,420 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-19 22:08:12,422 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-19 22:08:12,422 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-19 22:08:12,424 INFO L275 PluginConnector]: CDTParser initialized [2022-03-19 22:08:12,425 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/trex03-2.c [2022-03-19 22:08:12,465 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7b373aa21/411cf0d8d65a4b868eb51e4aa2535425/FLAG33d4d1f03 [2022-03-19 22:08:12,830 INFO L306 CDTParser]: Found 1 translation units. [2022-03-19 22:08:12,830 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/trex03-2.c [2022-03-19 22:08:12,834 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7b373aa21/411cf0d8d65a4b868eb51e4aa2535425/FLAG33d4d1f03 [2022-03-19 22:08:12,843 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7b373aa21/411cf0d8d65a4b868eb51e4aa2535425 [2022-03-19 22:08:12,845 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-19 22:08:12,846 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-03-19 22:08:12,855 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-19 22:08:12,855 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-19 22:08:12,857 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-19 22:08:12,858 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.03 10:08:12" (1/1) ... [2022-03-19 22:08:12,858 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@412a3501 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 10:08:12, skipping insertion in model container [2022-03-19 22:08:12,859 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.03 10:08:12" (1/1) ... [2022-03-19 22:08:12,863 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-19 22:08:12,870 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-19 22:08:13,001 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/trex03-2.c[320,333] [2022-03-19 22:08:13,048 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-19 22:08:13,054 INFO L203 MainTranslator]: Completed pre-run [2022-03-19 22:08:13,075 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/trex03-2.c[320,333] [2022-03-19 22:08:13,078 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-19 22:08:13,086 INFO L208 MainTranslator]: Completed translation [2022-03-19 22:08:13,086 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 10:08:13 WrapperNode [2022-03-19 22:08:13,087 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-19 22:08:13,096 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-19 22:08:13,097 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-19 22:08:13,097 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-19 22:08:13,111 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 10:08:13" (1/1) ... [2022-03-19 22:08:13,111 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 10:08:13" (1/1) ... [2022-03-19 22:08:13,117 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 10:08:13" (1/1) ... [2022-03-19 22:08:13,117 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 10:08:13" (1/1) ... [2022-03-19 22:08:13,124 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 10:08:13" (1/1) ... [2022-03-19 22:08:13,126 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 10:08:13" (1/1) ... [2022-03-19 22:08:13,127 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 10:08:13" (1/1) ... [2022-03-19 22:08:13,133 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-19 22:08:13,133 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-19 22:08:13,134 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-19 22:08:13,134 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-19 22:08:13,135 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 10:08:13" (1/1) ... [2022-03-19 22:08:13,141 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-19 22:08:13,149 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 22:08:13,159 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 22:08:13,166 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 22:08:13,194 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-03-19 22:08:13,194 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-19 22:08:13,194 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-03-19 22:08:13,195 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-03-19 22:08:13,196 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-03-19 22:08:13,197 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-03-19 22:08:13,197 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-03-19 22:08:13,197 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-03-19 22:08:13,197 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-19 22:08:13,197 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-03-19 22:08:13,197 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2022-03-19 22:08:13,197 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2022-03-19 22:08:13,200 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-03-19 22:08:13,200 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-03-19 22:08:13,200 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-19 22:08:13,200 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-19 22:08:13,200 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-19 22:08:13,200 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-19 22:08:13,200 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-19 22:08:13,241 INFO L234 CfgBuilder]: Building ICFG [2022-03-19 22:08:13,242 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-19 22:08:13,344 INFO L275 CfgBuilder]: Performing block encoding [2022-03-19 22:08:13,348 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-19 22:08:13,348 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-03-19 22:08:13,349 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.03 10:08:13 BoogieIcfgContainer [2022-03-19 22:08:13,349 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-19 22:08:13,350 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-19 22:08:13,351 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-19 22:08:13,363 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-19 22:08:13,363 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.03 10:08:12" (1/3) ... [2022-03-19 22:08:13,364 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f1aa5ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.03 10:08:13, skipping insertion in model container [2022-03-19 22:08:13,364 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 10:08:13" (2/3) ... [2022-03-19 22:08:13,364 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f1aa5ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.03 10:08:13, skipping insertion in model container [2022-03-19 22:08:13,364 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.03 10:08:13" (3/3) ... [2022-03-19 22:08:13,366 INFO L111 eAbstractionObserver]: Analyzing ICFG trex03-2.c [2022-03-19 22:08:13,369 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-03-19 22:08:13,369 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-19 22:08:13,407 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-19 22:08:13,417 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 22:08:13,417 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-03-19 22:08:13,430 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 15 states have internal predecessors, (20), 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 22:08:13,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-03-19 22:08:13,433 INFO L491 BasicCegarLoop]: Found error trace [2022-03-19 22:08:13,434 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 22:08:13,434 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 22:08:13,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 22:08:13,455 INFO L85 PathProgramCache]: Analyzing trace with hash -1016564801, now seen corresponding path program 1 times [2022-03-19 22:08:13,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 22:08:13,461 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302715959] [2022-03-19 22:08:13,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 22:08:13,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 22:08:13,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 22:08:13,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 22:08:13,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 22:08:13,585 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 22:08:13,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 22:08:13,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302715959] [2022-03-19 22:08:13,586 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302715959] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 22:08:13,586 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 22:08:13,586 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-19 22:08:13,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288357261] [2022-03-19 22:08:13,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 22:08:13,590 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-19 22:08:13,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-19 22:08:13,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-19 22:08:13,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-19 22:08:13,610 INFO L87 Difference]: Start difference. First operand has 22 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 15 states have internal predecessors, (20), 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 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 22:08:13,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 22:08:13,634 INFO L93 Difference]: Finished difference Result 34 states and 39 transitions. [2022-03-19 22:08:13,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-19 22:08:13,636 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2022-03-19 22:08:13,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 22:08:13,640 INFO L225 Difference]: With dead ends: 34 [2022-03-19 22:08:13,640 INFO L226 Difference]: Without dead ends: 15 [2022-03-19 22:08:13,642 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 22:08:13,644 INFO L913 BasicCegarLoop]: 23 mSDtfsCounter, 15 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 26 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 22:08:13,645 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 26 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-19 22:08:13,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2022-03-19 22:08:13,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2022-03-19 22:08:13,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 10 states have (on average 1.3) internal successors, (13), 10 states have internal predecessors, (13), 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 22:08:13,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2022-03-19 22:08:13,684 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 11 [2022-03-19 22:08:13,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 22:08:13,684 INFO L478 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2022-03-19 22:08:13,684 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 22:08:13,684 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2022-03-19 22:08:13,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-03-19 22:08:13,685 INFO L491 BasicCegarLoop]: Found error trace [2022-03-19 22:08:13,685 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 22:08:13,685 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-19 22:08:13,685 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 22:08:13,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 22:08:13,686 INFO L85 PathProgramCache]: Analyzing trace with hash -1031341137, now seen corresponding path program 1 times [2022-03-19 22:08:13,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 22:08:13,686 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787715508] [2022-03-19 22:08:13,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 22:08:13,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 22:08:13,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 22:08:13,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 22:08:13,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 22:08:13,855 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 22:08:13,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 22:08:13,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787715508] [2022-03-19 22:08:13,856 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787715508] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 22:08:13,856 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 22:08:13,856 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-19 22:08:13,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891561458] [2022-03-19 22:08:13,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 22:08:13,857 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-19 22:08:13,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-19 22:08:13,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-19 22:08:13,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-03-19 22:08:13,858 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand has 6 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 22:08:13,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 22:08:13,941 INFO L93 Difference]: Finished difference Result 15 states and 17 transitions. [2022-03-19 22:08:13,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-19 22:08:13,942 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2022-03-19 22:08:13,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 22:08:13,942 INFO L225 Difference]: With dead ends: 15 [2022-03-19 22:08:13,942 INFO L226 Difference]: Without dead ends: 0 [2022-03-19 22:08:13,943 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-03-19 22:08:13,943 INFO L913 BasicCegarLoop]: 14 mSDtfsCounter, 10 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-19 22:08:13,944 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 31 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-19 22:08:13,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-03-19 22:08:13,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-03-19 22:08:13,945 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 22:08:13,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-03-19 22:08:13,945 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2022-03-19 22:08:13,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 22:08:13,945 INFO L478 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-03-19 22:08:13,945 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 22:08:13,945 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-03-19 22:08:13,946 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-03-19 22:08:13,948 INFO L788 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-03-19 22:08:13,948 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-19 22:08:13,949 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-03-19 22:08:13,975 INFO L882 garLoopResultBuilder]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2022-03-19 22:08:13,976 INFO L882 garLoopResultBuilder]: For program point reach_errorENTRY(line 3) no Hoare annotation was computed. [2022-03-19 22:08:13,976 INFO L882 garLoopResultBuilder]: For program point reach_errorFINAL(line 3) no Hoare annotation was computed. [2022-03-19 22:08:13,976 INFO L882 garLoopResultBuilder]: For program point L29(line 29) no Hoare annotation was computed. [2022-03-19 22:08:13,976 INFO L882 garLoopResultBuilder]: For program point mainEXIT(lines 14 31) no Hoare annotation was computed. [2022-03-19 22:08:13,976 INFO L882 garLoopResultBuilder]: For program point L23(lines 23 24) no Hoare annotation was computed. [2022-03-19 22:08:13,976 INFO L882 garLoopResultBuilder]: For program point L23-2(lines 22 24) no Hoare annotation was computed. [2022-03-19 22:08:13,976 INFO L882 garLoopResultBuilder]: For program point mainFINAL(lines 14 31) no Hoare annotation was computed. [2022-03-19 22:08:13,976 INFO L885 garLoopResultBuilder]: At program point mainENTRY(lines 14 31) the Hoare annotation is: true [2022-03-19 22:08:13,977 INFO L882 garLoopResultBuilder]: For program point L22(lines 22 24) no Hoare annotation was computed. [2022-03-19 22:08:13,977 INFO L885 garLoopResultBuilder]: At program point L20-2(lines 20 27) the Hoare annotation is: true [2022-03-19 22:08:13,977 INFO L878 garLoopResultBuilder]: At program point L20-3(lines 20 27) the Hoare annotation is: (or (= (+ main_~x3~0 (* (div main_~x3~0 4294967296) (- 4294967296))) 0) (= (+ (* (div main_~x2~0 4294967296) (- 4294967296)) main_~x2~0) 0) (= (+ (* (div main_~x1~0 4294967296) (- 4294967296)) main_~x1~0) 0)) [2022-03-19 22:08:13,977 INFO L882 garLoopResultBuilder]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2022-03-19 22:08:13,977 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 22:08:13,977 INFO L882 garLoopResultBuilder]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2022-03-19 22:08:13,977 INFO L882 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-03-19 22:08:13,977 INFO L885 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: true [2022-03-19 22:08:13,978 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2022-03-19 22:08:13,978 INFO L882 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-03-19 22:08:13,978 INFO L885 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 5 10) the Hoare annotation is: true [2022-03-19 22:08:13,978 INFO L882 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 5 10) no Hoare annotation was computed. [2022-03-19 22:08:13,978 INFO L882 garLoopResultBuilder]: For program point L7(line 7) no Hoare annotation was computed. [2022-03-19 22:08:13,978 INFO L882 garLoopResultBuilder]: For program point L6(lines 6 8) no Hoare annotation was computed. [2022-03-19 22:08:13,978 INFO L882 garLoopResultBuilder]: For program point L6-2(lines 5 10) no Hoare annotation was computed. [2022-03-19 22:08:13,978 INFO L882 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 7) no Hoare annotation was computed. [2022-03-19 22:08:13,981 INFO L719 BasicCegarLoop]: Path program histogram: [1, 1] [2022-03-19 22:08:13,982 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-19 22:08:13,987 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.03 10:08:13 BoogieIcfgContainer [2022-03-19 22:08:13,987 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-19 22:08:13,988 INFO L158 Benchmark]: Toolchain (without parser) took 1141.90ms. Allocated memory was 188.7MB in the beginning and 297.8MB in the end (delta: 109.1MB). Free memory was 129.3MB in the beginning and 220.5MB in the end (delta: -91.2MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. [2022-03-19 22:08:13,988 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 188.7MB. Free memory is still 145.7MB. There was no memory consumed. Max. memory is 8.0GB. [2022-03-19 22:08:13,990 INFO L158 Benchmark]: CACSL2BoogieTranslator took 240.80ms. Allocated memory was 188.7MB in the beginning and 297.8MB in the end (delta: 109.1MB). Free memory was 161.2MB in the beginning and 267.7MB in the end (delta: -106.5MB). Peak memory consumption was 7.4MB. Max. memory is 8.0GB. [2022-03-19 22:08:13,990 INFO L158 Benchmark]: Boogie Preprocessor took 36.57ms. Allocated memory is still 297.8MB. Free memory was 267.7MB in the beginning and 266.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-03-19 22:08:13,991 INFO L158 Benchmark]: RCFGBuilder took 215.97ms. Allocated memory is still 297.8MB. Free memory was 266.1MB in the beginning and 256.2MB in the end (delta: 10.0MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2022-03-19 22:08:13,991 INFO L158 Benchmark]: TraceAbstraction took 636.94ms. Allocated memory is still 297.8MB. Free memory was 255.6MB in the beginning and 220.5MB in the end (delta: 35.1MB). Peak memory consumption was 34.6MB. Max. memory is 8.0GB. [2022-03-19 22:08:13,992 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 188.7MB. Free memory is still 145.7MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 240.80ms. Allocated memory was 188.7MB in the beginning and 297.8MB in the end (delta: 109.1MB). Free memory was 161.2MB in the beginning and 267.7MB in the end (delta: -106.5MB). Peak memory consumption was 7.4MB. Max. memory is 8.0GB. * Boogie Preprocessor took 36.57ms. Allocated memory is still 297.8MB. Free memory was 267.7MB in the beginning and 266.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 215.97ms. Allocated memory is still 297.8MB. Free memory was 266.1MB in the beginning and 256.2MB in the end (delta: 10.0MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * TraceAbstraction took 636.94ms. Allocated memory is still 297.8MB. Free memory was 255.6MB in the beginning and 220.5MB in the end (delta: 35.1MB). Peak memory consumption was 34.6MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 7]: 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 5 procedures, 25 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.6s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 26 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 25 mSDsluCounter, 57 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 20 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 31 IncrementalHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 37 mSDtfsCounter, 31 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred in iteration=0, InterpolantAutomatonStates: 9, 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 8 PreInvPairs, 9 NumberOfFragments, 40 HoareAnnotationTreeSize, 8 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 65 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 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: 20]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2022-03-19 22:08:14,017 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...