/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks NOT_INCREMENTALLY -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-invgen/large_const.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-20 11:59:42,146 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 11:59:42,149 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 11:59:42,164 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 11:59:42,165 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 11:59:42,166 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 11:59:42,168 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 11:59:42,170 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 11:59:42,172 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 11:59:42,173 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 11:59:42,174 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 11:59:42,175 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 11:59:42,176 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 11:59:42,177 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 11:59:42,178 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 11:59:42,179 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 11:59:42,180 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 11:59:42,182 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 11:59:42,184 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 11:59:42,186 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 11:59:42,189 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 11:59:42,190 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 11:59:42,192 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 11:59:42,193 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 11:59:42,196 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 11:59:42,206 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 11:59:42,208 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 11:59:42,209 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 11:59:42,210 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 [2020-07-20 11:59:42,231 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 11:59:42,232 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 11:59:42,234 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 11:59:42,235 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 11:59:42,235 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 11:59:42,235 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 11:59:42,236 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 11:59:42,236 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 11:59:42,236 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 11:59:42,237 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 11:59:42,237 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 11:59:42,238 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 11:59:42,238 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 11:59:42,238 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 11:59:42,238 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 11:59:42,239 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 11:59:42,239 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 11:59:42,239 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 11:59:42,240 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 11:59:42,241 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 11:59:42,241 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 11:59:42,241 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 11:59:42,241 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 11:59:42,241 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 11:59:42,242 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 11:59:42,242 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 11:59:42,242 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:59:42,243 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 11:59:42,244 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 11:59:42,244 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> NOT_INCREMENTALLY [2020-07-20 11:59:42,584 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 11:59:42,611 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 11:59:42,615 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 11:59:42,617 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 11:59:42,620 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 11:59:42,621 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/large_const.i [2020-07-20 11:59:42,716 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6facb7371/f0be845ed5df483f8726e51ebb368fb9/FLAG9c9c72de1 [2020-07-20 11:59:43,257 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 11:59:43,258 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/large_const.i [2020-07-20 11:59:43,267 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6facb7371/f0be845ed5df483f8726e51ebb368fb9/FLAG9c9c72de1 [2020-07-20 11:59:43,633 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6facb7371/f0be845ed5df483f8726e51ebb368fb9 [2020-07-20 11:59:43,645 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 11:59:43,649 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 11:59:43,650 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 11:59:43,650 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 11:59:43,656 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 11:59:43,658 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 11:59:43" (1/1) ... [2020-07-20 11:59:43,661 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77b47dcf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:59:43, skipping insertion in model container [2020-07-20 11:59:43,661 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 11:59:43" (1/1) ... [2020-07-20 11:59:43,672 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 11:59:43,693 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 11:59:43,889 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 11:59:43,894 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 11:59:43,914 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 11:59:43,931 INFO L208 MainTranslator]: Completed translation [2020-07-20 11:59:43,932 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:59:43 WrapperNode [2020-07-20 11:59:43,933 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 11:59:43,934 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 11:59:43,934 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 11:59:43,934 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 11:59:43,950 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:59:43" (1/1) ... [2020-07-20 11:59:43,950 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:59:43" (1/1) ... [2020-07-20 11:59:43,958 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:59:43" (1/1) ... [2020-07-20 11:59:43,959 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:59:43" (1/1) ... [2020-07-20 11:59:44,068 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:59:43" (1/1) ... [2020-07-20 11:59:44,075 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:59:43" (1/1) ... [2020-07-20 11:59:44,076 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:59:43" (1/1) ... [2020-07-20 11:59:44,079 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 11:59:44,079 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 11:59:44,080 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 11:59:44,080 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 11:59:44,081 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:59:43" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 11:59:44,151 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 11:59:44,151 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 11:59:44,151 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-20 11:59:44,151 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-20 11:59:44,151 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 11:59:44,151 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 11:59:44,152 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-20 11:59:44,152 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-20 11:59:44,152 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-20 11:59:44,152 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 11:59:44,152 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 11:59:44,152 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 11:59:44,152 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 11:59:44,430 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 11:59:44,430 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-07-20 11:59:44,435 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 11:59:44 BoogieIcfgContainer [2020-07-20 11:59:44,436 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 11:59:44,437 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 11:59:44,437 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 11:59:44,441 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 11:59:44,442 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 11:59:43" (1/3) ... [2020-07-20 11:59:44,443 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dcda4ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 11:59:44, skipping insertion in model container [2020-07-20 11:59:44,443 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:59:43" (2/3) ... [2020-07-20 11:59:44,444 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dcda4ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 11:59:44, skipping insertion in model container [2020-07-20 11:59:44,444 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 11:59:44" (3/3) ... [2020-07-20 11:59:44,446 INFO L109 eAbstractionObserver]: Analyzing ICFG large_const.i [2020-07-20 11:59:44,459 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-20 11:59:44,467 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 11:59:44,484 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 11:59:44,513 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 11:59:44,514 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 11:59:44,514 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-20 11:59:44,514 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 11:59:44,515 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 11:59:44,515 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 11:59:44,515 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 11:59:44,515 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 11:59:44,535 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2020-07-20 11:59:44,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-07-20 11:59:44,542 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:59:44,543 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 11:59:44,544 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:59:44,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:59:44,550 INFO L82 PathProgramCache]: Analyzing trace with hash -1992019723, now seen corresponding path program 1 times [2020-07-20 11:59:44,558 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:59:44,559 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1770171879] [2020-07-20 11:59:44,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:59:44,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:59:44,634 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 11:59:44,642 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:59:44,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 11:59:44,779 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:59:44,781 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1770171879] [2020-07-20 11:59:44,783 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:59:44,784 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 11:59:44,785 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137941409] [2020-07-20 11:59:44,795 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 11:59:44,795 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:59:44,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 11:59:44,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-07-20 11:59:44,811 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 5 states. [2020-07-20 11:59:44,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:59:44,921 INFO L93 Difference]: Finished difference Result 46 states and 61 transitions. [2020-07-20 11:59:44,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 11:59:44,924 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-07-20 11:59:44,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:59:44,934 INFO L225 Difference]: With dead ends: 46 [2020-07-20 11:59:44,935 INFO L226 Difference]: Without dead ends: 21 [2020-07-20 11:59:44,939 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-07-20 11:59:44,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-07-20 11:59:44,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2020-07-20 11:59:44,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-07-20 11:59:44,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 24 transitions. [2020-07-20 11:59:44,990 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 24 transitions. Word has length 13 [2020-07-20 11:59:44,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:59:44,991 INFO L479 AbstractCegarLoop]: Abstraction has 21 states and 24 transitions. [2020-07-20 11:59:44,991 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 11:59:44,991 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions. [2020-07-20 11:59:44,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-07-20 11:59:44,992 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:59:44,993 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 11:59:45,209 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:59:45,210 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:59:45,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:59:45,212 INFO L82 PathProgramCache]: Analyzing trace with hash 2018685173, now seen corresponding path program 1 times [2020-07-20 11:59:45,212 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:59:45,213 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1978123954] [2020-07-20 11:59:45,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:59:45,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:59:45,259 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-20 11:59:45,262 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:59:45,337 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 11:59:45,390 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 11:59:45,392 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 11:59:45,427 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 11:59:45,487 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 11:59:45,488 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1978123954] [2020-07-20 11:59:45,488 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 11:59:45,489 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2020-07-20 11:59:45,489 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10912346] [2020-07-20 11:59:45,491 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-07-20 11:59:45,491 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:59:45,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-07-20 11:59:45,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-07-20 11:59:45,493 INFO L87 Difference]: Start difference. First operand 21 states and 24 transitions. Second operand 10 states. [2020-07-20 11:59:45,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:59:45,772 INFO L93 Difference]: Finished difference Result 47 states and 58 transitions. [2020-07-20 11:59:45,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-07-20 11:59:45,773 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 16 [2020-07-20 11:59:45,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:59:45,786 INFO L225 Difference]: With dead ends: 47 [2020-07-20 11:59:45,786 INFO L226 Difference]: Without dead ends: 45 [2020-07-20 11:59:45,790 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 21 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2020-07-20 11:59:45,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-07-20 11:59:45,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 34. [2020-07-20 11:59:45,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-07-20 11:59:45,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 40 transitions. [2020-07-20 11:59:45,836 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 40 transitions. Word has length 16 [2020-07-20 11:59:45,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:59:45,838 INFO L479 AbstractCegarLoop]: Abstraction has 34 states and 40 transitions. [2020-07-20 11:59:45,839 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-07-20 11:59:45,839 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 40 transitions. [2020-07-20 11:59:45,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-07-20 11:59:45,844 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:59:45,844 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 11:59:46,058 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:59:46,059 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:59:46,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:59:46,060 INFO L82 PathProgramCache]: Analyzing trace with hash 23130030, now seen corresponding path program 1 times [2020-07-20 11:59:46,060 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:59:46,061 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [395488100] [2020-07-20 11:59:46,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:59:46,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:59:46,098 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-20 11:59:46,101 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:59:46,142 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 11:59:46,189 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 11:59:46,190 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 11:59:46,213 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 11:59:46,272 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 11:59:46,273 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [395488100] [2020-07-20 11:59:46,273 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 11:59:46,274 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2020-07-20 11:59:46,274 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225308959] [2020-07-20 11:59:46,275 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-07-20 11:59:46,275 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:59:46,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-07-20 11:59:46,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-07-20 11:59:46,276 INFO L87 Difference]: Start difference. First operand 34 states and 40 transitions. Second operand 10 states. [2020-07-20 11:59:46,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:59:46,477 INFO L93 Difference]: Finished difference Result 60 states and 74 transitions. [2020-07-20 11:59:46,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-07-20 11:59:46,478 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2020-07-20 11:59:46,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:59:46,482 INFO L225 Difference]: With dead ends: 60 [2020-07-20 11:59:46,482 INFO L226 Difference]: Without dead ends: 58 [2020-07-20 11:59:46,483 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2020-07-20 11:59:46,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-07-20 11:59:46,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 40. [2020-07-20 11:59:46,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-07-20 11:59:46,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 50 transitions. [2020-07-20 11:59:46,495 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 50 transitions. Word has length 17 [2020-07-20 11:59:46,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:59:46,496 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 50 transitions. [2020-07-20 11:59:46,496 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-07-20 11:59:46,496 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 50 transitions. [2020-07-20 11:59:46,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-07-20 11:59:46,497 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:59:46,497 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 11:59:46,701 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:59:46,703 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:59:46,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:59:46,704 INFO L82 PathProgramCache]: Analyzing trace with hash -786216596, now seen corresponding path program 1 times [2020-07-20 11:59:46,704 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:59:46,706 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1482764738] [2020-07-20 11:59:46,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:59:46,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:59:46,749 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-20 11:59:46,754 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:59:46,781 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 11:59:46,802 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 11:59:46,803 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 11:59:46,820 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 11:59:46,865 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 11:59:46,866 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1482764738] [2020-07-20 11:59:46,866 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 11:59:46,866 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2020-07-20 11:59:46,867 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313313599] [2020-07-20 11:59:46,867 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-07-20 11:59:46,867 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:59:46,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-07-20 11:59:46,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-07-20 11:59:46,868 INFO L87 Difference]: Start difference. First operand 40 states and 50 transitions. Second operand 10 states. [2020-07-20 11:59:47,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:59:47,057 INFO L93 Difference]: Finished difference Result 64 states and 81 transitions. [2020-07-20 11:59:47,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-07-20 11:59:47,058 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2020-07-20 11:59:47,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:59:47,062 INFO L225 Difference]: With dead ends: 64 [2020-07-20 11:59:47,063 INFO L226 Difference]: Without dead ends: 62 [2020-07-20 11:59:47,064 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2020-07-20 11:59:47,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-07-20 11:59:47,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 45. [2020-07-20 11:59:47,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-07-20 11:59:47,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 59 transitions. [2020-07-20 11:59:47,076 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 59 transitions. Word has length 17 [2020-07-20 11:59:47,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:59:47,076 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 59 transitions. [2020-07-20 11:59:47,076 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-07-20 11:59:47,076 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 59 transitions. [2020-07-20 11:59:47,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-07-20 11:59:47,077 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:59:47,078 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 11:59:47,291 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:59:47,292 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:59:47,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:59:47,293 INFO L82 PathProgramCache]: Analyzing trace with hash -986746962, now seen corresponding path program 1 times [2020-07-20 11:59:47,293 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:59:47,293 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [407444884] [2020-07-20 11:59:47,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:59:47,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:59:47,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 11:59:47,326 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:59:47,357 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 11:59:47,357 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:59:47,358 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [407444884] [2020-07-20 11:59:47,358 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:59:47,358 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 11:59:47,359 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656826986] [2020-07-20 11:59:47,359 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 11:59:47,360 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:59:47,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 11:59:47,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-07-20 11:59:47,361 INFO L87 Difference]: Start difference. First operand 45 states and 59 transitions. Second operand 5 states. [2020-07-20 11:59:47,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:59:47,392 INFO L93 Difference]: Finished difference Result 67 states and 85 transitions. [2020-07-20 11:59:47,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 11:59:47,393 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2020-07-20 11:59:47,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:59:47,394 INFO L225 Difference]: With dead ends: 67 [2020-07-20 11:59:47,394 INFO L226 Difference]: Without dead ends: 32 [2020-07-20 11:59:47,395 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-07-20 11:59:47,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-07-20 11:59:47,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2020-07-20 11:59:47,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-07-20 11:59:47,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2020-07-20 11:59:47,408 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 20 [2020-07-20 11:59:47,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:59:47,408 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2020-07-20 11:59:47,409 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 11:59:47,409 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2020-07-20 11:59:47,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-07-20 11:59:47,410 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:59:47,410 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 11:59:47,613 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:59:47,615 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:59:47,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:59:47,615 INFO L82 PathProgramCache]: Analyzing trace with hash -1055644043, now seen corresponding path program 1 times [2020-07-20 11:59:47,616 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:59:47,616 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1726499710] [2020-07-20 11:59:47,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:59:47,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:59:47,648 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 11:59:47,651 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:59:47,692 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-07-20 11:59:47,693 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:59:47,693 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1726499710] [2020-07-20 11:59:47,693 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:59:47,694 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 11:59:47,694 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992956922] [2020-07-20 11:59:47,695 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 11:59:47,695 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:59:47,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 11:59:47,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-07-20 11:59:47,696 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand 5 states. [2020-07-20 11:59:47,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:59:47,736 INFO L93 Difference]: Finished difference Result 34 states and 36 transitions. [2020-07-20 11:59:47,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 11:59:47,738 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2020-07-20 11:59:47,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:59:47,738 INFO L225 Difference]: With dead ends: 34 [2020-07-20 11:59:47,739 INFO L226 Difference]: Without dead ends: 0 [2020-07-20 11:59:47,740 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-07-20 11:59:47,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-20 11:59:47,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-20 11:59:47,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-20 11:59:47,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-20 11:59:47,741 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 30 [2020-07-20 11:59:47,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:59:47,741 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-20 11:59:47,741 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 11:59:47,742 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-20 11:59:47,742 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-20 11:59:47,943 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:59:47,948 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-20 11:59:48,328 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 30 [2020-07-20 11:59:48,411 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-07-20 11:59:48,411 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-20 11:59:48,411 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-20 11:59:48,411 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-20 11:59:48,411 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-20 11:59:48,412 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-20 11:59:48,412 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed. [2020-07-20 11:59:48,412 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-07-20 11:59:48,412 INFO L268 CegarLoopResult]: For program point L4-2(lines 3 5) no Hoare annotation was computed. [2020-07-20 11:59:48,412 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed. [2020-07-20 11:59:48,413 INFO L264 CegarLoopResult]: At program point L35-2(lines 35 39) the Hoare annotation is: (let ((.cse3 (<= 0 main_~j~0)) (.cse0 (<= 10000 main_~c3~0)) (.cse1 (<= 4000 main_~c1~0)) (.cse2 (<= 2000 main_~c2~0)) (.cse4 (< main_~n~0 2)) (.cse5 (<= 1 main_~i~0))) (or (and .cse0 (<= 2000 main_~k~0) .cse1 .cse2 .cse3 .cse4 .cse5) (and (<= main_~i~0 0) (<= main_~n~0 0) .cse3) (and .cse0 (<= 1 main_~j~0) .cse1 .cse2 (< 0 main_~k~0) .cse4 .cse5))) [2020-07-20 11:59:48,413 INFO L268 CegarLoopResult]: For program point L35-3(lines 35 39) no Hoare annotation was computed. [2020-07-20 11:59:48,413 INFO L268 CegarLoopResult]: For program point L29(lines 29 32) no Hoare annotation was computed. [2020-07-20 11:59:48,413 INFO L268 CegarLoopResult]: For program point L27(lines 27 32) no Hoare annotation was computed. [2020-07-20 11:59:48,414 INFO L264 CegarLoopResult]: At program point L29-2(lines 23 33) the Hoare annotation is: (let ((.cse0 (<= 10000 main_~c3~0)) (.cse1 (<= 4000 main_~c1~0)) (.cse2 (<= 2000 main_~c2~0))) (or (and (<= main_~i~0 0) .cse0 (<= 0 main_~i~0) .cse1 .cse2 (<= 0 main_~k~0)) (and .cse0 (<= 2000 main_~k~0) .cse1 .cse2 (< main_~n~0 2) (<= 1 main_~i~0)))) [2020-07-20 11:59:48,414 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 13 41) no Hoare annotation was computed. [2020-07-20 11:59:48,414 INFO L268 CegarLoopResult]: For program point L23-2(lines 23 33) no Hoare annotation was computed. [2020-07-20 11:59:48,414 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 13 41) no Hoare annotation was computed. [2020-07-20 11:59:48,414 INFO L264 CegarLoopResult]: At program point L36(line 36) the Hoare annotation is: (and (<= 10000 main_~c3~0) (<= 2000 main_~k~0) (<= 4000 main_~c1~0) (<= 2000 main_~c2~0) (<= 0 main_~j~0) (< main_~n~0 2) (<= 1 main_~i~0)) [2020-07-20 11:59:48,414 INFO L268 CegarLoopResult]: For program point L36-1(line 36) no Hoare annotation was computed. [2020-07-20 11:59:48,415 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 13 41) the Hoare annotation is: true [2020-07-20 11:59:48,415 INFO L268 CegarLoopResult]: For program point L26(line 26) no Hoare annotation was computed. [2020-07-20 11:59:48,415 INFO L268 CegarLoopResult]: For program point L20(line 20) no Hoare annotation was computed. [2020-07-20 11:59:48,415 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2020-07-20 11:59:48,415 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 6 11) no Hoare annotation was computed. [2020-07-20 11:59:48,415 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-07-20 11:59:48,416 INFO L268 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed. [2020-07-20 11:59:48,416 INFO L268 CegarLoopResult]: For program point L7-2(lines 6 11) no Hoare annotation was computed. [2020-07-20 11:59:48,416 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-07-20 11:59:48,441 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 11:59:48 BoogieIcfgContainer [2020-07-20 11:59:48,441 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 11:59:48,444 INFO L168 Benchmark]: Toolchain (without parser) took 4796.82 ms. Allocated memory was 136.8 MB in the beginning and 248.5 MB in the end (delta: 111.7 MB). Free memory was 101.4 MB in the beginning and 203.5 MB in the end (delta: -102.1 MB). Peak memory consumption was 117.5 MB. Max. memory is 7.1 GB. [2020-07-20 11:59:48,445 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 136.8 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-07-20 11:59:48,446 INFO L168 Benchmark]: CACSL2BoogieTranslator took 282.80 ms. Allocated memory is still 136.8 MB. Free memory was 101.0 MB in the beginning and 91.4 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. [2020-07-20 11:59:48,447 INFO L168 Benchmark]: Boogie Preprocessor took 145.26 ms. Allocated memory was 136.8 MB in the beginning and 201.3 MB in the end (delta: 64.5 MB). Free memory was 91.4 MB in the beginning and 180.0 MB in the end (delta: -88.6 MB). Peak memory consumption was 14.7 MB. Max. memory is 7.1 GB. [2020-07-20 11:59:48,448 INFO L168 Benchmark]: RCFGBuilder took 356.37 ms. Allocated memory is still 201.3 MB. Free memory was 180.0 MB in the beginning and 164.7 MB in the end (delta: 15.3 MB). Peak memory consumption was 15.3 MB. Max. memory is 7.1 GB. [2020-07-20 11:59:48,449 INFO L168 Benchmark]: TraceAbstraction took 4004.05 ms. Allocated memory was 201.3 MB in the beginning and 248.5 MB in the end (delta: 47.2 MB). Free memory was 164.1 MB in the beginning and 203.5 MB in the end (delta: -39.4 MB). Peak memory consumption was 115.6 MB. Max. memory is 7.1 GB. [2020-07-20 11:59:48,453 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 136.8 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 282.80 ms. Allocated memory is still 136.8 MB. Free memory was 101.0 MB in the beginning and 91.4 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 145.26 ms. Allocated memory was 136.8 MB in the beginning and 201.3 MB in the end (delta: 64.5 MB). Free memory was 91.4 MB in the beginning and 180.0 MB in the end (delta: -88.6 MB). Peak memory consumption was 14.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 356.37 ms. Allocated memory is still 201.3 MB. Free memory was 180.0 MB in the beginning and 164.7 MB in the end (delta: 15.3 MB). Peak memory consumption was 15.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4004.05 ms. Allocated memory was 201.3 MB in the beginning and 248.5 MB in the end (delta: 47.2 MB). Free memory was 164.1 MB in the beginning and 203.5 MB in the end (delta: -39.4 MB). Peak memory consumption was 115.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 8]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: (((((i <= 0 && 10000 <= c3) && 0 <= i) && 4000 <= c1) && 2000 <= c2) && 0 <= k) || (((((10000 <= c3 && 2000 <= k) && 4000 <= c1) && 2000 <= c2) && n < 2) && 1 <= i) - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: (((((((10000 <= c3 && 2000 <= k) && 4000 <= c1) && 2000 <= c2) && 0 <= j) && n < 2) && 1 <= i) || ((i <= 0 && n <= 0) && 0 <= j)) || ((((((10000 <= c3 && 1 <= j) && 4000 <= c1) && 2000 <= c2) && 0 < k) && n < 2) && 1 <= i) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 29 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.4s, OverallIterations: 6, TraceHistogramMax: 3, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 149 SDtfs, 168 SDslu, 437 SDs, 0 SdLazy, 276 SolverSat, 85 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 171 GetRequests, 118 SyntacticMatches, 6 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=45occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 48 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 14 PreInvPairs, 20 NumberOfFragments, 121 HoareAnnotationTreeSize, 14 FomulaSimplifications, 312 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 8 FomulaSimplificationsInter, 88 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 113 NumberOfCodeBlocks, 113 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 154 ConstructedInterpolants, 0 QuantifiedInterpolants, 7160 SizeOfPredicates, 15 NumberOfNonLiveVariables, 408 ConjunctsInSsa, 30 ConjunctsInUnsatCore, 9 InterpolantComputations, 3 PerfectInterpolantSequences, 21/27 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 RESULT: Ultimate proved your program to be correct! Received shutdown request...