/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive-simple/fibo_7-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-72570d3 [2020-08-22 16:34:35,156 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 16:34:35,160 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 16:34:35,200 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-08-22 16:34:35,219 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 16:34:35,220 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 16:34:35,221 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 16:34:35,223 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 16:34:35,223 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 16:34:35,224 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 16:34:35,226 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 16:34:35,228 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 16:34:35,230 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 16:34:35,231 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 16:34:35,232 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 16:34:35,233 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 16:34:35,238 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-22 16:34:35,246 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 16:34:35,247 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 16:34:35,248 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 16:34:35,248 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 [2020-08-22 16:34:35,272 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 16:34:35,272 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 16:34:35,273 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 16:34:35,274 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 16:34:35,274 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 16:34:35,274 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 16:34:35,274 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 16:34:35,274 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 16:34:35,275 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 16:34:35,275 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 16:34:35,275 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 16:34:35,275 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 16:34:35,276 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 16:34:35,276 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 16:34:35,276 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 16:34:35,276 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 16:34:35,276 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 16:34:35,277 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 16:34:35,277 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 16:34:35,277 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 16:34:35,277 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 16:34:35,277 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 16:34:35,278 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 16:34:35,278 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 16:34:35,278 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 16:34:35,278 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 16:34:35,279 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 16:34:35,279 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 16:34:35,279 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 16:34:35,279 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-08-22 16:34:35,574 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 16:34:35,593 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 16:34:35,598 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 16:34:35,601 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 16:34:35,602 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 16:34:35,603 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_7-1.c [2020-08-22 16:34:35,672 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/021bb34fa/38b69ef01e564e26ab250c7ae230d83f/FLAG500695710 [2020-08-22 16:34:36,195 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 16:34:36,196 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive-simple/fibo_7-1.c [2020-08-22 16:34:36,204 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/021bb34fa/38b69ef01e564e26ab250c7ae230d83f/FLAG500695710 [2020-08-22 16:34:36,633 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/021bb34fa/38b69ef01e564e26ab250c7ae230d83f [2020-08-22 16:34:36,643 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 16:34:36,645 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 16:34:36,649 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 16:34:36,649 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 16:34:36,653 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 16:34:36,655 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 04:34:36" (1/1) ... [2020-08-22 16:34:36,658 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3fd6677d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:34:36, skipping insertion in model container [2020-08-22 16:34:36,658 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 04:34:36" (1/1) ... [2020-08-22 16:34:36,666 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 16:34:36,682 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 16:34:36,866 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 16:34:36,871 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 16:34:36,889 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 16:34:36,905 INFO L208 MainTranslator]: Completed translation [2020-08-22 16:34:36,905 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:34:36 WrapperNode [2020-08-22 16:34:36,906 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 16:34:36,906 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 16:34:36,907 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 16:34:36,907 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 16:34:36,922 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:34:36" (1/1) ... [2020-08-22 16:34:36,922 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:34:36" (1/1) ... [2020-08-22 16:34:36,928 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:34:36" (1/1) ... [2020-08-22 16:34:36,928 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:34:36" (1/1) ... [2020-08-22 16:34:36,932 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:34:36" (1/1) ... [2020-08-22 16:34:36,934 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:34:36" (1/1) ... [2020-08-22 16:34:36,935 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:34:36" (1/1) ... [2020-08-22 16:34:36,937 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 16:34:36,937 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 16:34:36,937 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 16:34:36,938 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 16:34:36,938 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:34:36" (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 [2020-08-22 16:34:37,137 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 16:34:37,138 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 16:34:37,138 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo [2020-08-22 16:34:37,138 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 16:34:37,138 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 16:34:37,138 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 16:34:37,138 INFO L130 BoogieDeclarations]: Found specification of procedure fibo [2020-08-22 16:34:37,139 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 16:34:37,139 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 16:34:37,139 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 16:34:37,350 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 16:34:37,350 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-22 16:34:37,355 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 04:34:37 BoogieIcfgContainer [2020-08-22 16:34:37,355 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 16:34:37,356 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 16:34:37,357 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 16:34:37,360 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 16:34:37,361 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 04:34:36" (1/3) ... [2020-08-22 16:34:37,362 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@357d5bcf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 04:34:37, skipping insertion in model container [2020-08-22 16:34:37,362 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:34:36" (2/3) ... [2020-08-22 16:34:37,363 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@357d5bcf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 04:34:37, skipping insertion in model container [2020-08-22 16:34:37,363 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 04:34:37" (3/3) ... [2020-08-22 16:34:37,365 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_7-1.c [2020-08-22 16:34:37,377 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-08-22 16:34:37,387 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 16:34:37,406 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 16:34:37,454 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 16:34:37,455 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 16:34:37,455 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-08-22 16:34:37,456 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 16:34:37,456 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 16:34:37,457 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 16:34:37,457 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 16:34:37,457 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 16:34:37,483 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2020-08-22 16:34:37,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-08-22 16:34:37,492 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:34:37,494 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:34:37,494 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:34:37,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:34:37,502 INFO L82 PathProgramCache]: Analyzing trace with hash 537028541, now seen corresponding path program 1 times [2020-08-22 16:34:37,513 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:34:37,514 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195700524] [2020-08-22 16:34:37,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:34:37,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:37,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:34:37,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:37,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 16:34:37,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:37,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 16:34:37,740 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195700524] [2020-08-22 16:34:37,741 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 16:34:37,741 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 16:34:37,743 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033536457] [2020-08-22 16:34:37,749 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 16:34:37,749 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:34:37,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 16:34:37,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 16:34:37,769 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 5 states. [2020-08-22 16:34:37,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:34:37,872 INFO L93 Difference]: Finished difference Result 35 states and 41 transitions. [2020-08-22 16:34:37,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 16:34:37,875 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-08-22 16:34:37,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:34:37,886 INFO L225 Difference]: With dead ends: 35 [2020-08-22 16:34:37,886 INFO L226 Difference]: Without dead ends: 21 [2020-08-22 16:34:37,891 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-22 16:34:37,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-08-22 16:34:37,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2020-08-22 16:34:37,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-08-22 16:34:37,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2020-08-22 16:34:37,944 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 13 [2020-08-22 16:34:37,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:34:37,945 INFO L479 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2020-08-22 16:34:37,945 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 16:34:37,945 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2020-08-22 16:34:37,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-08-22 16:34:37,947 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:34:37,948 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:34:37,948 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 16:34:37,948 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:34:37,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:34:37,949 INFO L82 PathProgramCache]: Analyzing trace with hash 179123823, now seen corresponding path program 1 times [2020-08-22 16:34:37,949 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:34:37,950 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664801917] [2020-08-22 16:34:37,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:34:37,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:37,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:34:37,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:37,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 16:34:37,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:38,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 16:34:38,024 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664801917] [2020-08-22 16:34:38,024 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 16:34:38,024 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 16:34:38,025 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581904901] [2020-08-22 16:34:38,027 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 16:34:38,028 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:34:38,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 16:34:38,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 16:34:38,029 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand 5 states. [2020-08-22 16:34:38,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:34:38,086 INFO L93 Difference]: Finished difference Result 27 states and 32 transitions. [2020-08-22 16:34:38,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 16:34:38,087 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-08-22 16:34:38,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:34:38,089 INFO L225 Difference]: With dead ends: 27 [2020-08-22 16:34:38,089 INFO L226 Difference]: Without dead ends: 23 [2020-08-22 16:34:38,090 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-22 16:34:38,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-08-22 16:34:38,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 21. [2020-08-22 16:34:38,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-08-22 16:34:38,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2020-08-22 16:34:38,099 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 14 [2020-08-22 16:34:38,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:34:38,100 INFO L479 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2020-08-22 16:34:38,100 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 16:34:38,100 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2020-08-22 16:34:38,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-08-22 16:34:38,102 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:34:38,102 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:34:38,102 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 16:34:38,103 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:34:38,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:34:38,103 INFO L82 PathProgramCache]: Analyzing trace with hash 806022394, now seen corresponding path program 1 times [2020-08-22 16:34:38,104 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:34:38,104 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367509035] [2020-08-22 16:34:38,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:34:38,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:38,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:34:38,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:38,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 16:34:38,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:38,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:38,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:38,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 16:34:38,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:38,276 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-22 16:34:38,277 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367509035] [2020-08-22 16:34:38,277 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1996748562] [2020-08-22 16:34:38,277 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 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 16:34:38,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:38,316 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 6 conjunts are in the unsatisfiable core [2020-08-22 16:34:38,324 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 16:34:38,480 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-22 16:34:38,481 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-08-22 16:34:38,482 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 9 [2020-08-22 16:34:38,482 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275777943] [2020-08-22 16:34:38,483 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 16:34:38,483 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:34:38,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 16:34:38,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-08-22 16:34:38,486 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand 9 states. [2020-08-22 16:34:38,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:34:38,625 INFO L93 Difference]: Finished difference Result 38 states and 49 transitions. [2020-08-22 16:34:38,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-22 16:34:38,626 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 26 [2020-08-22 16:34:38,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:34:38,627 INFO L225 Difference]: With dead ends: 38 [2020-08-22 16:34:38,628 INFO L226 Difference]: Without dead ends: 23 [2020-08-22 16:34:38,629 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2020-08-22 16:34:38,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-08-22 16:34:38,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-08-22 16:34:38,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-08-22 16:34:38,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2020-08-22 16:34:38,638 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 26 [2020-08-22 16:34:38,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:34:38,639 INFO L479 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2020-08-22 16:34:38,639 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 16:34:38,639 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2020-08-22 16:34:38,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-08-22 16:34:38,641 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:34:38,641 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:34:38,856 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-08-22 16:34:38,857 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:34:38,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:34:38,858 INFO L82 PathProgramCache]: Analyzing trace with hash -983862936, now seen corresponding path program 1 times [2020-08-22 16:34:38,858 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:34:38,858 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362520786] [2020-08-22 16:34:38,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:34:38,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:38,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:34:38,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:38,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 16:34:38,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:38,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:38,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:39,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 16:34:39,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:39,009 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-08-22 16:34:39,010 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362520786] [2020-08-22 16:34:39,010 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2061862258] [2020-08-22 16:34:39,010 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 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2020-08-22 16:34:39,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 16:34:39,041 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 6 conjunts are in the unsatisfiable core [2020-08-22 16:34:39,045 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 16:34:39,106 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-08-22 16:34:39,107 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-08-22 16:34:39,107 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2020-08-22 16:34:39,107 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389112625] [2020-08-22 16:34:39,108 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-22 16:34:39,108 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:34:39,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-22 16:34:39,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-22 16:34:39,109 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand 7 states. [2020-08-22 16:34:39,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:34:39,235 INFO L93 Difference]: Finished difference Result 41 states and 55 transitions. [2020-08-22 16:34:39,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-22 16:34:39,239 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 27 [2020-08-22 16:34:39,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:34:39,243 INFO L225 Difference]: With dead ends: 41 [2020-08-22 16:34:39,244 INFO L226 Difference]: Without dead ends: 37 [2020-08-22 16:34:39,245 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-08-22 16:34:39,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-08-22 16:34:39,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-08-22 16:34:39,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-08-22 16:34:39,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 51 transitions. [2020-08-22 16:34:39,263 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 51 transitions. Word has length 27 [2020-08-22 16:34:39,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:34:39,264 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 51 transitions. [2020-08-22 16:34:39,264 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-22 16:34:39,264 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 51 transitions. [2020-08-22 16:34:39,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-08-22 16:34:39,267 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:34:39,268 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:34:39,470 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 16:34:39,473 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:34:39,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:34:39,474 INFO L82 PathProgramCache]: Analyzing trace with hash 146085807, now seen corresponding path program 2 times [2020-08-22 16:34:39,475 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:34:39,475 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548197087] [2020-08-22 16:34:39,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:34:39,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:39,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:34:39,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:39,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 16:34:39,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:39,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:39,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:39,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:39,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:39,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 16:34:39,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:39,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 16:34:39,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:39,707 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 23 proven. 7 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-08-22 16:34:39,707 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548197087] [2020-08-22 16:34:39,708 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [323137206] [2020-08-22 16:34:39,708 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 16:34:39,744 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-08-22 16:34:39,744 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-08-22 16:34:39,745 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 8 conjunts are in the unsatisfiable core [2020-08-22 16:34:39,748 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 16:34:39,854 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 6 proven. 21 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-08-22 16:34:39,855 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-08-22 16:34:39,855 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 12 [2020-08-22 16:34:39,855 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594603262] [2020-08-22 16:34:39,856 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-22 16:34:39,856 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:34:39,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-22 16:34:39,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-08-22 16:34:39,857 INFO L87 Difference]: Start difference. First operand 37 states and 51 transitions. Second operand 12 states. [2020-08-22 16:34:40,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:34:40,154 INFO L93 Difference]: Finished difference Result 72 states and 109 transitions. [2020-08-22 16:34:40,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-22 16:34:40,155 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 40 [2020-08-22 16:34:40,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:34:40,162 INFO L225 Difference]: With dead ends: 72 [2020-08-22 16:34:40,163 INFO L226 Difference]: Without dead ends: 41 [2020-08-22 16:34:40,166 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=88, Invalid=254, Unknown=0, NotChecked=0, Total=342 [2020-08-22 16:34:40,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-08-22 16:34:40,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2020-08-22 16:34:40,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-08-22 16:34:40,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 49 transitions. [2020-08-22 16:34:40,190 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 49 transitions. Word has length 40 [2020-08-22 16:34:40,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:34:40,191 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 49 transitions. [2020-08-22 16:34:40,191 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-22 16:34:40,191 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 49 transitions. [2020-08-22 16:34:40,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-08-22 16:34:40,197 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:34:40,197 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 7, 4, 4, 4, 4, 4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:34:40,413 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 16:34:40,413 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:34:40,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:34:40,414 INFO L82 PathProgramCache]: Analyzing trace with hash 2001184551, now seen corresponding path program 3 times [2020-08-22 16:34:40,414 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:34:40,415 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430066716] [2020-08-22 16:34:40,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:34:40,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:40,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:34:40,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:40,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 16:34:40,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:40,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:40,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:40,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:40,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:40,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:40,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:40,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 16:34:40,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:40,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 16:34:40,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:40,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 16:34:40,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:40,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:40,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:40,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 16:34:40,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:40,660 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 17 proven. 88 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-08-22 16:34:40,661 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430066716] [2020-08-22 16:34:40,661 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [329425837] [2020-08-22 16:34:40,662 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 16:34:40,706 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2020-08-22 16:34:40,706 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-08-22 16:34:40,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 8 conjunts are in the unsatisfiable core [2020-08-22 16:34:40,723 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 16:34:40,810 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 65 proven. 22 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2020-08-22 16:34:40,810 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-08-22 16:34:40,811 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 10 [2020-08-22 16:34:40,811 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828008173] [2020-08-22 16:34:40,814 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 16:34:40,814 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:34:40,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 16:34:40,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-08-22 16:34:40,816 INFO L87 Difference]: Start difference. First operand 41 states and 49 transitions. Second operand 10 states. [2020-08-22 16:34:41,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:34:41,006 INFO L93 Difference]: Finished difference Result 88 states and 127 transitions. [2020-08-22 16:34:41,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-22 16:34:41,007 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 68 [2020-08-22 16:34:41,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:34:41,010 INFO L225 Difference]: With dead ends: 88 [2020-08-22 16:34:41,010 INFO L226 Difference]: Without dead ends: 53 [2020-08-22 16:34:41,012 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2020-08-22 16:34:41,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-08-22 16:34:41,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 50. [2020-08-22 16:34:41,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-08-22 16:34:41,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 64 transitions. [2020-08-22 16:34:41,024 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 64 transitions. Word has length 68 [2020-08-22 16:34:41,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:34:41,024 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 64 transitions. [2020-08-22 16:34:41,024 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 16:34:41,025 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 64 transitions. [2020-08-22 16:34:41,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-08-22 16:34:41,026 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:34:41,027 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 14, 8, 8, 8, 8, 8, 8, 8, 6, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:34:41,242 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 16:34:41,243 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:34:41,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:34:41,244 INFO L82 PathProgramCache]: Analyzing trace with hash -19418837, now seen corresponding path program 4 times [2020-08-22 16:34:41,244 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:34:41,244 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062500157] [2020-08-22 16:34:41,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:34:41,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:41,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:34:41,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:41,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 16:34:41,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:41,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:41,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:41,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:41,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:41,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:41,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:41,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:41,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:41,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 16:34:41,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:41,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 16:34:41,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:41,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 16:34:41,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:41,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:41,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:41,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 16:34:41,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:41,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-22 16:34:41,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:41,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:41,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:41,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:41,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:41,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:41,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:41,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 16:34:41,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:41,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 16:34:41,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:41,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 16:34:41,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:41,575 INFO L134 CoverageAnalysis]: Checked inductivity of 747 backedges. 47 proven. 280 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2020-08-22 16:34:41,575 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062500157] [2020-08-22 16:34:41,576 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [375815320] [2020-08-22 16:34:41,576 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 16:34:41,635 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-08-22 16:34:41,636 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-08-22 16:34:41,637 INFO L263 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 12 conjunts are in the unsatisfiable core [2020-08-22 16:34:41,643 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 16:34:41,770 INFO L134 CoverageAnalysis]: Checked inductivity of 747 backedges. 47 proven. 280 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2020-08-22 16:34:41,771 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-08-22 16:34:41,772 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10 [2020-08-22 16:34:41,772 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53967282] [2020-08-22 16:34:41,774 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 16:34:41,775 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:34:41,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 16:34:41,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-08-22 16:34:41,781 INFO L87 Difference]: Start difference. First operand 50 states and 64 transitions. Second operand 10 states. [2020-08-22 16:34:42,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:34:42,036 INFO L93 Difference]: Finished difference Result 120 states and 179 transitions. [2020-08-22 16:34:42,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-22 16:34:42,037 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 123 [2020-08-22 16:34:42,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:34:42,042 INFO L225 Difference]: With dead ends: 120 [2020-08-22 16:34:42,042 INFO L226 Difference]: Without dead ends: 116 [2020-08-22 16:34:42,043 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2020-08-22 16:34:42,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-08-22 16:34:42,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 107. [2020-08-22 16:34:42,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-08-22 16:34:42,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 162 transitions. [2020-08-22 16:34:42,065 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 162 transitions. Word has length 123 [2020-08-22 16:34:42,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:34:42,066 INFO L479 AbstractCegarLoop]: Abstraction has 107 states and 162 transitions. [2020-08-22 16:34:42,066 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 16:34:42,066 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 162 transitions. [2020-08-22 16:34:42,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2020-08-22 16:34:42,071 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:34:42,071 INFO L422 BasicCegarLoop]: trace histogram [31, 31, 25, 15, 15, 15, 15, 15, 15, 15, 10, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:34:42,284 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2020-08-22 16:34:42,285 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:34:42,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:34:42,286 INFO L82 PathProgramCache]: Analyzing trace with hash 706081956, now seen corresponding path program 5 times [2020-08-22 16:34:42,286 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:34:42,287 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968389029] [2020-08-22 16:34:42,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:34:42,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:42,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:34:42,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:42,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 16:34:42,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:42,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:42,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:42,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:42,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:42,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:42,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:42,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:42,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:42,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:42,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:42,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 16:34:42,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:42,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 16:34:42,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:42,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 16:34:42,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:42,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:42,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:42,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 16:34:42,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:42,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-22 16:34:42,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:42,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:42,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:42,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:42,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:42,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 16:34:42,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:42,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 16:34:42,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:42,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-22 16:34:42,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:42,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:42,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:42,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:42,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:42,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:42,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:42,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:42,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:42,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 16:34:42,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:42,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 16:34:42,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:42,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 16:34:42,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:42,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:42,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:42,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 16:34:42,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:42,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-22 16:34:42,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:42,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:42,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:42,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:42,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:42,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 16:34:42,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:43,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 16:34:43,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:43,120 INFO L134 CoverageAnalysis]: Checked inductivity of 2580 backedges. 432 proven. 761 refuted. 0 times theorem prover too weak. 1387 trivial. 0 not checked. [2020-08-22 16:34:43,121 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968389029] [2020-08-22 16:34:43,121 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1190567251] [2020-08-22 16:34:43,121 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 16:34:43,230 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2020-08-22 16:34:43,231 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-08-22 16:34:43,234 INFO L263 TraceCheckSpWp]: Trace formula consists of 389 conjuncts, 20 conjunts are in the unsatisfiable core [2020-08-22 16:34:43,247 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 16:34:43,468 INFO L134 CoverageAnalysis]: Checked inductivity of 2580 backedges. 630 proven. 571 refuted. 0 times theorem prover too weak. 1379 trivial. 0 not checked. [2020-08-22 16:34:43,468 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-08-22 16:34:43,469 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14] total 19 [2020-08-22 16:34:43,469 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587045718] [2020-08-22 16:34:43,471 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-08-22 16:34:43,472 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:34:43,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-08-22 16:34:43,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2020-08-22 16:34:43,472 INFO L87 Difference]: Start difference. First operand 107 states and 162 transitions. Second operand 19 states. [2020-08-22 16:34:44,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:34:44,267 INFO L93 Difference]: Finished difference Result 196 states and 368 transitions. [2020-08-22 16:34:44,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-08-22 16:34:44,268 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 218 [2020-08-22 16:34:44,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:34:44,275 INFO L225 Difference]: With dead ends: 196 [2020-08-22 16:34:44,275 INFO L226 Difference]: Without dead ends: 98 [2020-08-22 16:34:44,281 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 316 GetRequests, 279 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 291 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=321, Invalid=1161, Unknown=0, NotChecked=0, Total=1482 [2020-08-22 16:34:44,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-08-22 16:34:44,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 87. [2020-08-22 16:34:44,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-08-22 16:34:44,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 116 transitions. [2020-08-22 16:34:44,313 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 116 transitions. Word has length 218 [2020-08-22 16:34:44,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:34:44,313 INFO L479 AbstractCegarLoop]: Abstraction has 87 states and 116 transitions. [2020-08-22 16:34:44,313 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-08-22 16:34:44,314 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 116 transitions. [2020-08-22 16:34:44,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2020-08-22 16:34:44,319 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:34:44,319 INFO L422 BasicCegarLoop]: trace histogram [41, 41, 33, 20, 20, 20, 20, 20, 20, 20, 13, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:34:44,537 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 16:34:44,538 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:34:44,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:34:44,538 INFO L82 PathProgramCache]: Analyzing trace with hash -1425621089, now seen corresponding path program 6 times [2020-08-22 16:34:44,539 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:34:44,539 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911682649] [2020-08-22 16:34:44,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:34:44,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:44,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:34:44,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:44,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 16:34:44,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:44,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:44,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:45,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:45,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:45,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:45,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:45,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:45,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:45,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:45,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:45,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:45,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:45,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 16:34:45,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:45,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 16:34:45,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:45,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 16:34:45,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:45,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:45,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:45,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 16:34:45,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:45,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-22 16:34:45,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:45,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:45,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:45,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:45,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:45,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 16:34:45,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:45,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 16:34:45,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:45,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-22 16:34:45,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:45,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:45,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:45,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:45,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:45,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:45,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:45,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 16:34:45,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:45,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 16:34:45,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:45,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 16:34:45,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:45,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:45,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:45,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 16:34:45,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:45,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-08-22 16:34:45,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:45,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:45,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:45,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:45,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:45,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:45,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:45,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:45,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:45,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 16:34:45,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:45,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 16:34:45,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:45,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 16:34:45,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:45,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:45,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:45,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 16:34:45,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:45,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-22 16:34:45,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:45,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:45,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:45,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:45,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:45,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 16:34:45,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:45,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 16:34:45,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:46,147 INFO L134 CoverageAnalysis]: Checked inductivity of 4568 backedges. 0 proven. 1500 refuted. 0 times theorem prover too weak. 3068 trivial. 0 not checked. [2020-08-22 16:34:46,148 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911682649] [2020-08-22 16:34:46,148 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1295054275] [2020-08-22 16:34:46,148 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 16:34:46,282 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 41 check-sat command(s) [2020-08-22 16:34:46,282 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-08-22 16:34:46,287 INFO L263 TraceCheckSpWp]: Trace formula consists of 636 conjuncts, 167 conjunts are in the unsatisfiable core [2020-08-22 16:34:46,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 16:34:47,242 INFO L134 CoverageAnalysis]: Checked inductivity of 4568 backedges. 0 proven. 1500 refuted. 0 times theorem prover too weak. 3068 trivial. 0 not checked. [2020-08-22 16:34:47,243 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-08-22 16:34:47,243 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 28 [2020-08-22 16:34:47,243 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661909815] [2020-08-22 16:34:47,244 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-08-22 16:34:47,244 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:34:47,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-08-22 16:34:47,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=691, Unknown=0, NotChecked=0, Total=756 [2020-08-22 16:34:47,246 INFO L87 Difference]: Start difference. First operand 87 states and 116 transitions. Second operand 28 states. [2020-08-22 16:34:47,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:34:47,667 INFO L93 Difference]: Finished difference Result 108 states and 158 transitions. [2020-08-22 16:34:47,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-22 16:34:47,667 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 286 [2020-08-22 16:34:47,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:34:47,670 INFO L225 Difference]: With dead ends: 108 [2020-08-22 16:34:47,670 INFO L226 Difference]: Without dead ends: 104 [2020-08-22 16:34:47,671 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 454 GetRequests, 406 SyntacticMatches, 22 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=65, Invalid=691, Unknown=0, NotChecked=0, Total=756 [2020-08-22 16:34:47,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-08-22 16:34:47,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 97. [2020-08-22 16:34:47,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-08-22 16:34:47,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 142 transitions. [2020-08-22 16:34:47,688 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 142 transitions. Word has length 286 [2020-08-22 16:34:47,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:34:47,689 INFO L479 AbstractCegarLoop]: Abstraction has 97 states and 142 transitions. [2020-08-22 16:34:47,689 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-08-22 16:34:47,689 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 142 transitions. [2020-08-22 16:34:47,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 369 [2020-08-22 16:34:47,696 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:34:47,696 INFO L422 BasicCegarLoop]: trace histogram [53, 53, 43, 26, 26, 26, 26, 26, 26, 26, 17, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:34:47,910 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 16:34:47,910 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:34:47,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:34:47,911 INFO L82 PathProgramCache]: Analyzing trace with hash -120387169, now seen corresponding path program 7 times [2020-08-22 16:34:47,911 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:34:47,911 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422348987] [2020-08-22 16:34:47,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:34:47,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:48,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:34:48,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:48,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 16:34:48,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:48,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:48,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:48,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:48,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:48,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:48,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:48,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:48,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:48,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:48,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:48,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:48,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:48,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 16:34:48,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:48,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 16:34:48,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:48,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 16:34:48,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:48,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:48,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:48,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 16:34:48,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:48,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-22 16:34:48,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:48,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:48,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:48,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:48,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:48,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 16:34:48,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:48,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 16:34:48,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:48,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-22 16:34:48,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:48,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:48,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:48,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:48,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:48,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:48,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:48,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 16:34:48,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:48,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 16:34:48,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:48,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 16:34:48,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:48,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:48,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:48,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 16:34:48,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:48,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-08-22 16:34:48,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:48,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:48,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:48,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:48,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:48,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:48,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:48,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:48,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:48,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:48,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:48,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:48,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:48,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 16:34:48,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:48,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 16:34:48,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:48,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 16:34:48,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:48,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:48,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:48,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 16:34:48,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:48,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-22 16:34:48,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:48,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:48,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:48,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:48,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:48,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 16:34:48,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:48,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 16:34:48,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:48,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-22 16:34:48,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:48,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:48,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:48,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:48,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:48,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 16:34:48,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:48,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 16:34:48,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:48,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-08-22 16:34:48,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:48,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:48,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:48,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:48,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:48,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 16:34:48,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:48,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 16:34:48,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:48,995 INFO L134 CoverageAnalysis]: Checked inductivity of 7715 backedges. 1624 proven. 1706 refuted. 0 times theorem prover too weak. 4385 trivial. 0 not checked. [2020-08-22 16:34:48,995 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422348987] [2020-08-22 16:34:48,996 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1919860245] [2020-08-22 16:34:48,996 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 16:34:49,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:49,109 INFO L263 TraceCheckSpWp]: Trace formula consists of 818 conjuncts, 16 conjunts are in the unsatisfiable core [2020-08-22 16:34:49,116 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 16:34:49,312 INFO L134 CoverageAnalysis]: Checked inductivity of 7715 backedges. 1238 proven. 629 refuted. 0 times theorem prover too weak. 5848 trivial. 0 not checked. [2020-08-22 16:34:49,313 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-08-22 16:34:49,313 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 11] total 20 [2020-08-22 16:34:49,313 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030716232] [2020-08-22 16:34:49,314 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-08-22 16:34:49,314 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:34:49,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-08-22 16:34:49,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380 [2020-08-22 16:34:49,315 INFO L87 Difference]: Start difference. First operand 97 states and 142 transitions. Second operand 20 states. [2020-08-22 16:34:50,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:34:50,300 INFO L93 Difference]: Finished difference Result 230 states and 452 transitions. [2020-08-22 16:34:50,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-08-22 16:34:50,301 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 368 [2020-08-22 16:34:50,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:34:50,305 INFO L225 Difference]: With dead ends: 230 [2020-08-22 16:34:50,305 INFO L226 Difference]: Without dead ends: 127 [2020-08-22 16:34:50,308 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 523 GetRequests, 478 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 491 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=431, Invalid=1731, Unknown=0, NotChecked=0, Total=2162 [2020-08-22 16:34:50,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2020-08-22 16:34:50,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 113. [2020-08-22 16:34:50,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-08-22 16:34:50,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 150 transitions. [2020-08-22 16:34:50,323 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 150 transitions. Word has length 368 [2020-08-22 16:34:50,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:34:50,324 INFO L479 AbstractCegarLoop]: Abstraction has 113 states and 150 transitions. [2020-08-22 16:34:50,324 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-08-22 16:34:50,324 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 150 transitions. [2020-08-22 16:34:50,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2020-08-22 16:34:50,329 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:34:50,330 INFO L422 BasicCegarLoop]: trace histogram [51, 51, 41, 25, 25, 25, 25, 25, 25, 25, 16, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:34:50,543 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-08-22 16:34:50,544 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:34:50,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:34:50,545 INFO L82 PathProgramCache]: Analyzing trace with hash -617256294, now seen corresponding path program 8 times [2020-08-22 16:34:50,545 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:34:50,546 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767370199] [2020-08-22 16:34:50,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:34:50,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:50,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:34:50,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:50,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 16:34:50,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:50,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:50,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:50,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:50,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:50,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:50,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:50,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:50,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:51,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:51,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:51,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:51,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:51,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:51,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:51,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 16:34:51,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:51,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 16:34:51,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:51,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 16:34:51,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:51,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:51,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:51,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 16:34:51,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:51,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-22 16:34:51,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:51,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:51,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:51,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:51,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:51,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 16:34:51,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:51,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 16:34:51,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:51,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-22 16:34:51,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:51,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:51,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:51,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:51,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:51,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:51,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:51,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 16:34:51,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:51,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 16:34:51,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:51,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 16:34:51,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:51,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:51,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:51,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 16:34:51,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:51,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-08-22 16:34:51,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:51,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:51,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:51,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:51,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:51,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:51,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:51,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 16:34:51,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:51,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 16:34:51,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:51,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 16:34:51,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:51,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:51,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:51,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 16:34:51,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:51,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-08-22 16:34:51,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:51,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:51,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:51,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:51,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:51,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:51,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:51,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:51,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:51,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 16:34:51,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:51,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 16:34:51,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:51,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 16:34:51,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:51,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:51,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:51,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 16:34:51,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:51,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-22 16:34:51,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:51,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:51,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:51,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:51,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:51,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 16:34:51,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:51,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 16:34:51,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:51,550 INFO L134 CoverageAnalysis]: Checked inductivity of 7120 backedges. 863 proven. 1526 refuted. 0 times theorem prover too weak. 4731 trivial. 0 not checked. [2020-08-22 16:34:51,551 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767370199] [2020-08-22 16:34:51,551 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [865687961] [2020-08-22 16:34:51,551 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 16:34:51,667 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-08-22 16:34:51,667 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-08-22 16:34:51,669 INFO L263 TraceCheckSpWp]: Trace formula consists of 787 conjuncts, 18 conjunts are in the unsatisfiable core [2020-08-22 16:34:51,681 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 16:34:51,852 INFO L134 CoverageAnalysis]: Checked inductivity of 7120 backedges. 419 proven. 1507 refuted. 0 times theorem prover too weak. 5194 trivial. 0 not checked. [2020-08-22 16:34:51,853 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-08-22 16:34:51,853 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12] total 19 [2020-08-22 16:34:51,853 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542024363] [2020-08-22 16:34:51,854 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-08-22 16:34:51,855 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:34:51,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-08-22 16:34:51,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=269, Unknown=0, NotChecked=0, Total=342 [2020-08-22 16:34:51,855 INFO L87 Difference]: Start difference. First operand 113 states and 150 transitions. Second operand 19 states. [2020-08-22 16:34:52,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:34:52,359 INFO L93 Difference]: Finished difference Result 214 states and 297 transitions. [2020-08-22 16:34:52,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-08-22 16:34:52,361 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 354 [2020-08-22 16:34:52,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:34:52,362 INFO L225 Difference]: With dead ends: 214 [2020-08-22 16:34:52,362 INFO L226 Difference]: Without dead ends: 0 [2020-08-22 16:34:52,364 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 487 GetRequests, 456 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=237, Invalid=819, Unknown=0, NotChecked=0, Total=1056 [2020-08-22 16:34:52,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-22 16:34:52,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-22 16:34:52,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-22 16:34:52,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-22 16:34:52,364 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 354 [2020-08-22 16:34:52,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:34:52,365 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-22 16:34:52,365 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-08-22 16:34:52,365 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-22 16:34:52,365 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-22 16:34:52,565 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 16:34:52,569 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-22 16:34:53,258 WARN L193 SmtUtils]: Spent 463.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 42 [2020-08-22 16:34:53,385 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 6 [2020-08-22 16:34:53,390 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-08-22 16:34:53,390 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-08-22 16:34:53,390 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-08-22 16:34:53,390 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-08-22 16:34:53,390 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-08-22 16:34:53,391 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-08-22 16:34:53,391 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 27) no Hoare annotation was computed. [2020-08-22 16:34:53,391 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 23 30) the Hoare annotation is: true [2020-08-22 16:34:53,391 INFO L268 CegarLoopResult]: For program point L27(line 27) no Hoare annotation was computed. [2020-08-22 16:34:53,391 INFO L268 CegarLoopResult]: For program point L26(lines 26 28) no Hoare annotation was computed. [2020-08-22 16:34:53,391 INFO L264 CegarLoopResult]: At program point L25(line 25) the Hoare annotation is: (and (<= 7 main_~x~0) (<= main_~x~0 7)) [2020-08-22 16:34:53,392 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 23 30) no Hoare annotation was computed. [2020-08-22 16:34:53,392 INFO L268 CegarLoopResult]: For program point L25-1(line 25) no Hoare annotation was computed. [2020-08-22 16:34:53,392 INFO L268 CegarLoopResult]: For program point L26-2(lines 26 28) no Hoare annotation was computed. [2020-08-22 16:34:53,392 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 23 30) no Hoare annotation was computed. [2020-08-22 16:34:53,392 INFO L268 CegarLoopResult]: For program point fiboEXIT(lines 5 13) no Hoare annotation was computed. [2020-08-22 16:34:53,393 INFO L268 CegarLoopResult]: For program point fiboFINAL(lines 5 13) no Hoare annotation was computed. [2020-08-22 16:34:53,393 INFO L264 CegarLoopResult]: At program point L11(line 11) the Hoare annotation is: (and (<= 2 |fibo_#in~n|) (= fibo_~n |fibo_#in~n|)) [2020-08-22 16:34:53,393 INFO L268 CegarLoopResult]: For program point L11-1(line 11) no Hoare annotation was computed. [2020-08-22 16:34:53,393 INFO L264 CegarLoopResult]: At program point L11-2(line 11) the Hoare annotation is: (and (let ((.cse0 (<= 1 |fibo_#t~ret0|)) (.cse1 (<= |fibo_#t~ret0| 1))) (or (and .cse0 (<= 2 |fibo_#in~n|) .cse1 (<= |fibo_#in~n| 2)) (and (<= 5 |fibo_#t~ret0|) (<= |fibo_#in~n| 6) (<= |fibo_#t~ret0| 5) (<= 6 |fibo_#in~n|)) (and (<= |fibo_#in~n| 4) (<= 2 |fibo_#t~ret0|) (<= |fibo_#t~ret0| 2) (<= 4 |fibo_#in~n|)) (and .cse0 .cse1 (<= 3 |fibo_#in~n|) (<= |fibo_#in~n| 3)) (and (<= 8 |fibo_#t~ret0|) (<= 7 |fibo_#in~n|) (<= |fibo_#t~ret0| 8)) (and (<= 3 |fibo_#t~ret0|) (<= 5 |fibo_#in~n|) (<= |fibo_#t~ret0| 3) (<= |fibo_#in~n| 5)) (<= 8 |fibo_#in~n|))) (= fibo_~n |fibo_#in~n|)) [2020-08-22 16:34:53,393 INFO L268 CegarLoopResult]: For program point L8(lines 8 12) no Hoare annotation was computed. [2020-08-22 16:34:53,393 INFO L268 CegarLoopResult]: For program point L11-3(line 11) no Hoare annotation was computed. [2020-08-22 16:34:53,394 INFO L268 CegarLoopResult]: For program point L6(lines 6 12) no Hoare annotation was computed. [2020-08-22 16:34:53,394 INFO L271 CegarLoopResult]: At program point fiboENTRY(lines 5 13) the Hoare annotation is: true [2020-08-22 16:34:53,400 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 04:34:53 BoogieIcfgContainer [2020-08-22 16:34:53,400 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 16:34:53,402 INFO L168 Benchmark]: Toolchain (without parser) took 16757.38 ms. Allocated memory was 146.8 MB in the beginning and 536.9 MB in the end (delta: 390.1 MB). Free memory was 102.6 MB in the beginning and 288.3 MB in the end (delta: -185.7 MB). Peak memory consumption was 204.4 MB. Max. memory is 7.1 GB. [2020-08-22 16:34:53,403 INFO L168 Benchmark]: CDTParser took 1.37 ms. Allocated memory is still 146.8 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-22 16:34:53,403 INFO L168 Benchmark]: CACSL2BoogieTranslator took 257.13 ms. Allocated memory is still 146.8 MB. Free memory was 102.4 MB in the beginning and 93.0 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. [2020-08-22 16:34:53,404 INFO L168 Benchmark]: Boogie Preprocessor took 30.46 ms. Allocated memory is still 146.8 MB. Free memory was 93.0 MB in the beginning and 91.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-08-22 16:34:53,405 INFO L168 Benchmark]: RCFGBuilder took 417.80 ms. Allocated memory was 146.8 MB in the beginning and 205.5 MB in the end (delta: 58.7 MB). Free memory was 91.6 MB in the beginning and 173.2 MB in the end (delta: -81.6 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. [2020-08-22 16:34:53,405 INFO L168 Benchmark]: TraceAbstraction took 16044.00 ms. Allocated memory was 205.5 MB in the beginning and 536.9 MB in the end (delta: 331.4 MB). Free memory was 172.6 MB in the beginning and 288.3 MB in the end (delta: -115.7 MB). Peak memory consumption was 215.6 MB. Max. memory is 7.1 GB. [2020-08-22 16:34:53,408 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.37 ms. Allocated memory is still 146.8 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 257.13 ms. Allocated memory is still 146.8 MB. Free memory was 102.4 MB in the beginning and 93.0 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 30.46 ms. Allocated memory is still 146.8 MB. Free memory was 93.0 MB in the beginning and 91.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 417.80 ms. Allocated memory was 146.8 MB in the beginning and 205.5 MB in the end (delta: 58.7 MB). Free memory was 91.6 MB in the beginning and 173.2 MB in the end (delta: -81.6 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 16044.00 ms. Allocated memory was 205.5 MB in the beginning and 536.9 MB in the end (delta: 331.4 MB). Free memory was 172.6 MB in the beginning and 288.3 MB in the end (delta: -115.7 MB). Peak memory consumption was 215.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 27]: 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 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 24 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 15.1s, OverallIterations: 11, TraceHistogramMax: 53, AutomataDifference: 3.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.8s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 287 SDtfs, 587 SDslu, 1641 SDs, 0 SdLazy, 2377 SolverSat, 561 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2226 GetRequests, 1996 SyntacticMatches, 22 SemanticMatches, 208 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1144 ImplicationChecksByTransitivity, 3.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=113occurred in iteration=10, 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, 11 MinimizatonAttempts, 46 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 275 PreInvPairs, 405 NumberOfFragments, 102 HoareAnnotationTreeSize, 275 FomulaSimplifications, 1036 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 8 FomulaSimplificationsInter, 2240 FormulaSimplificationTreeSizeReductionInter, 0.5s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 7.3s InterpolantComputationTime, 3047 NumberOfCodeBlocks, 2963 NumberOfCodeBlocksAsserted, 89 NumberOfCheckSat, 3027 ConstructedInterpolants, 0 QuantifiedInterpolants, 1675733 SizeOfPredicates, 48 NumberOfNonLiveVariables, 3161 ConjunctsInSsa, 261 ConjunctsInUnsatCore, 20 InterpolantComputations, 2 PerfectInterpolantSequences, 35563/45982 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...