/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/loop-invgen/sendmail-close-angle.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 13:44:07,102 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 13:44:07,107 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 13:44:07,155 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 13:44:07,156 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 13:44:07,167 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 13:44:07,168 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 13:44:07,173 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 13:44:07,176 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 13:44:07,178 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 13:44:07,180 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 13:44:07,182 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 13:44:07,183 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 13:44:07,188 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 13:44:07,191 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 13:44:07,193 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 13:44:07,195 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 13:44:07,197 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 13:44:07,199 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 13:44:07,210 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 13:44:07,212 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 13:44:07,214 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 13:44:07,215 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 13:44:07,216 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 13:44:07,219 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-04 13:44:07,232 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 13:44:07,233 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 13:44:07,235 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 13:44:07,235 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-04 13:44:07,285 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 13:44:07,285 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 13:44:07,287 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-04 13:44:07,287 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-04 13:44:07,288 INFO L138 SettingsManager]: * Use SBE=true [2020-09-04 13:44:07,288 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 13:44:07,288 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 13:44:07,288 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 13:44:07,289 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 13:44:07,289 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 13:44:07,290 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 13:44:07,290 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 13:44:07,290 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 13:44:07,291 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 13:44:07,291 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 13:44:07,291 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 13:44:07,291 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 13:44:07,292 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 13:44:07,292 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-04 13:44:07,292 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 13:44:07,292 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 13:44:07,293 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 13:44:07,293 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 13:44:07,293 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-04 13:44:07,293 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-04 13:44:07,293 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-04 13:44:07,294 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-04 13:44:07,294 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 13:44:07,294 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-04 13:44:07,294 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-09-04 13:44:07,758 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 13:44:07,778 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 13:44:07,782 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 13:44:07,784 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 13:44:07,785 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 13:44:07,786 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/sendmail-close-angle.i [2020-09-04 13:44:07,867 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/93d798975/757d2bf884684a4983ab90708b52b4e7/FLAG01323c2d2 [2020-09-04 13:44:08,429 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 13:44:08,430 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-invgen/sendmail-close-angle.i [2020-09-04 13:44:08,440 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/93d798975/757d2bf884684a4983ab90708b52b4e7/FLAG01323c2d2 [2020-09-04 13:44:08,762 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/93d798975/757d2bf884684a4983ab90708b52b4e7 [2020-09-04 13:44:08,774 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 13:44:08,775 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 13:44:08,776 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 13:44:08,776 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 13:44:08,780 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 13:44:08,782 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 01:44:08" (1/1) ... [2020-09-04 13:44:08,786 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c2dfc77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:44:08, skipping insertion in model container [2020-09-04 13:44:08,787 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 01:44:08" (1/1) ... [2020-09-04 13:44:08,795 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 13:44:08,818 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 13:44:09,019 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 13:44:09,025 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 13:44:09,048 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 13:44:09,067 INFO L208 MainTranslator]: Completed translation [2020-09-04 13:44:09,068 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:44:09 WrapperNode [2020-09-04 13:44:09,068 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 13:44:09,069 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 13:44:09,070 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 13:44:09,070 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 13:44:09,090 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:44:09" (1/1) ... [2020-09-04 13:44:09,090 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:44:09" (1/1) ... [2020-09-04 13:44:09,098 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:44:09" (1/1) ... [2020-09-04 13:44:09,098 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:44:09" (1/1) ... [2020-09-04 13:44:09,102 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:44:09" (1/1) ... [2020-09-04 13:44:09,196 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:44:09" (1/1) ... [2020-09-04 13:44:09,198 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:44:09" (1/1) ... [2020-09-04 13:44:09,200 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 13:44:09,201 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 13:44:09,201 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 13:44:09,201 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 13:44:09,202 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:44:09" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-04 13:44:09,274 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 13:44:09,275 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 13:44:09,275 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-04 13:44:09,275 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-04 13:44:09,275 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 13:44:09,275 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 13:44:09,276 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-04 13:44:09,276 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-04 13:44:09,276 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-04 13:44:09,276 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-04 13:44:09,277 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 13:44:09,277 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 13:44:09,277 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 13:44:09,545 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 13:44:09,545 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-04 13:44:09,552 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 01:44:09 BoogieIcfgContainer [2020-09-04 13:44:09,553 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 13:44:09,566 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 13:44:09,566 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 13:44:09,571 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 13:44:09,572 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 01:44:08" (1/3) ... [2020-09-04 13:44:09,573 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28ceeb5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 01:44:09, skipping insertion in model container [2020-09-04 13:44:09,575 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:44:09" (2/3) ... [2020-09-04 13:44:09,575 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28ceeb5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 01:44:09, skipping insertion in model container [2020-09-04 13:44:09,576 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 01:44:09" (3/3) ... [2020-09-04 13:44:09,578 INFO L109 eAbstractionObserver]: Analyzing ICFG sendmail-close-angle.i [2020-09-04 13:44:09,594 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-09-04 13:44:09,621 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 13:44:09,658 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 13:44:09,688 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 13:44:09,688 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 13:44:09,688 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-04 13:44:09,688 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 13:44:09,688 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 13:44:09,688 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 13:44:09,688 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 13:44:09,689 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 13:44:09,710 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2020-09-04 13:44:09,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-04 13:44:09,718 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:44:09,719 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:44:09,719 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:44:09,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:44:09,726 INFO L82 PathProgramCache]: Analyzing trace with hash 160437665, now seen corresponding path program 1 times [2020-09-04 13:44:09,736 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:44:09,737 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139329311] [2020-09-04 13:44:09,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:44:09,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:44:09,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:44:09,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:44:09,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 13:44:09,875 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139329311] [2020-09-04 13:44:09,877 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 13:44:09,877 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-04 13:44:09,878 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519200709] [2020-09-04 13:44:09,884 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-09-04 13:44:09,885 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:44:09,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-09-04 13:44:09,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-04 13:44:09,906 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 2 states. [2020-09-04 13:44:09,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:44:09,943 INFO L93 Difference]: Finished difference Result 61 states and 92 transitions. [2020-09-04 13:44:09,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-09-04 13:44:09,945 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 14 [2020-09-04 13:44:09,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:44:09,959 INFO L225 Difference]: With dead ends: 61 [2020-09-04 13:44:09,959 INFO L226 Difference]: Without dead ends: 29 [2020-09-04 13:44:09,965 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-04 13:44:09,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-09-04 13:44:10,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-09-04 13:44:10,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-09-04 13:44:10,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 37 transitions. [2020-09-04 13:44:10,024 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 37 transitions. Word has length 14 [2020-09-04 13:44:10,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:44:10,024 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 37 transitions. [2020-09-04 13:44:10,024 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-09-04 13:44:10,025 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 37 transitions. [2020-09-04 13:44:10,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-04 13:44:10,026 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:44:10,026 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:44:10,026 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 13:44:10,027 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:44:10,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:44:10,027 INFO L82 PathProgramCache]: Analyzing trace with hash 89152719, now seen corresponding path program 1 times [2020-09-04 13:44:10,028 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:44:10,028 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708636819] [2020-09-04 13:44:10,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:44:10,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:44:10,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:44:10,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:44:10,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 13:44:10,155 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708636819] [2020-09-04 13:44:10,156 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 13:44:10,156 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-04 13:44:10,156 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410176812] [2020-09-04 13:44:10,158 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-04 13:44:10,159 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:44:10,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-04 13:44:10,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-04 13:44:10,160 INFO L87 Difference]: Start difference. First operand 29 states and 37 transitions. Second operand 5 states. [2020-09-04 13:44:10,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:44:10,274 INFO L93 Difference]: Finished difference Result 35 states and 42 transitions. [2020-09-04 13:44:10,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-04 13:44:10,275 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-09-04 13:44:10,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:44:10,276 INFO L225 Difference]: With dead ends: 35 [2020-09-04 13:44:10,277 INFO L226 Difference]: Without dead ends: 33 [2020-09-04 13:44:10,278 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-04 13:44:10,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-09-04 13:44:10,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-09-04 13:44:10,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-09-04 13:44:10,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 40 transitions. [2020-09-04 13:44:10,293 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 40 transitions. Word has length 15 [2020-09-04 13:44:10,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:44:10,293 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 40 transitions. [2020-09-04 13:44:10,293 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-04 13:44:10,294 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 40 transitions. [2020-09-04 13:44:10,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-09-04 13:44:10,295 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:44:10,295 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:44:10,295 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 13:44:10,295 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:44:10,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:44:10,296 INFO L82 PathProgramCache]: Analyzing trace with hash 1105875316, now seen corresponding path program 1 times [2020-09-04 13:44:10,296 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:44:10,297 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144119958] [2020-09-04 13:44:10,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:44:10,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:44:10,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:44:10,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:44:10,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-04 13:44:10,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:44:10,397 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 13:44:10,398 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144119958] [2020-09-04 13:44:10,398 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 13:44:10,398 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-04 13:44:10,399 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398012836] [2020-09-04 13:44:10,399 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-04 13:44:10,400 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:44:10,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-04 13:44:10,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-04 13:44:10,401 INFO L87 Difference]: Start difference. First operand 33 states and 40 transitions. Second operand 6 states. [2020-09-04 13:44:10,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:44:10,602 INFO L93 Difference]: Finished difference Result 48 states and 60 transitions. [2020-09-04 13:44:10,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-04 13:44:10,603 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 20 [2020-09-04 13:44:10,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:44:10,605 INFO L225 Difference]: With dead ends: 48 [2020-09-04 13:44:10,606 INFO L226 Difference]: Without dead ends: 46 [2020-09-04 13:44:10,608 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-04 13:44:10,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-09-04 13:44:10,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 44. [2020-09-04 13:44:10,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-09-04 13:44:10,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 56 transitions. [2020-09-04 13:44:10,633 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 56 transitions. Word has length 20 [2020-09-04 13:44:10,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:44:10,633 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 56 transitions. [2020-09-04 13:44:10,633 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-04 13:44:10,633 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 56 transitions. [2020-09-04 13:44:10,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-09-04 13:44:10,635 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:44:10,635 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:44:10,636 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-04 13:44:10,636 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:44:10,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:44:10,637 INFO L82 PathProgramCache]: Analyzing trace with hash 726428669, now seen corresponding path program 1 times [2020-09-04 13:44:10,637 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:44:10,637 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825578836] [2020-09-04 13:44:10,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:44:10,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:44:10,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:44:10,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:44:10,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-04 13:44:10,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:44:10,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-09-04 13:44:10,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:44:10,789 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-04 13:44:10,789 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825578836] [2020-09-04 13:44:10,789 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 13:44:10,790 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-04 13:44:10,790 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143065716] [2020-09-04 13:44:10,791 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-04 13:44:10,791 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:44:10,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-04 13:44:10,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-04 13:44:10,792 INFO L87 Difference]: Start difference. First operand 44 states and 56 transitions. Second operand 6 states. [2020-09-04 13:44:10,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:44:10,900 INFO L93 Difference]: Finished difference Result 55 states and 67 transitions. [2020-09-04 13:44:10,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-04 13:44:10,901 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 28 [2020-09-04 13:44:10,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:44:10,902 INFO L225 Difference]: With dead ends: 55 [2020-09-04 13:44:10,902 INFO L226 Difference]: Without dead ends: 53 [2020-09-04 13:44:10,903 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-04 13:44:10,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-09-04 13:44:10,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 48. [2020-09-04 13:44:10,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-09-04 13:44:10,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 59 transitions. [2020-09-04 13:44:10,916 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 59 transitions. Word has length 28 [2020-09-04 13:44:10,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:44:10,917 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 59 transitions. [2020-09-04 13:44:10,917 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-04 13:44:10,917 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 59 transitions. [2020-09-04 13:44:10,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-09-04 13:44:10,918 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:44:10,919 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:44:10,919 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-04 13:44:10,919 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:44:10,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:44:10,920 INFO L82 PathProgramCache]: Analyzing trace with hash 239914697, now seen corresponding path program 1 times [2020-09-04 13:44:10,920 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:44:10,920 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739562281] [2020-09-04 13:44:10,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:44:10,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:44:11,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:44:11,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:44:11,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-04 13:44:11,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:44:11,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-04 13:44:11,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:44:11,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-04 13:44:11,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:44:11,047 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-04 13:44:11,050 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739562281] [2020-09-04 13:44:11,050 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 13:44:11,050 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-04 13:44:11,051 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769373182] [2020-09-04 13:44:11,051 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-04 13:44:11,051 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:44:11,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-04 13:44:11,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-04 13:44:11,052 INFO L87 Difference]: Start difference. First operand 48 states and 59 transitions. Second operand 7 states. [2020-09-04 13:44:11,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:44:11,241 INFO L93 Difference]: Finished difference Result 70 states and 89 transitions. [2020-09-04 13:44:11,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-04 13:44:11,242 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 31 [2020-09-04 13:44:11,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:44:11,243 INFO L225 Difference]: With dead ends: 70 [2020-09-04 13:44:11,244 INFO L226 Difference]: Without dead ends: 63 [2020-09-04 13:44:11,244 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-09-04 13:44:11,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-09-04 13:44:11,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 61. [2020-09-04 13:44:11,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-09-04 13:44:11,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 75 transitions. [2020-09-04 13:44:11,258 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 75 transitions. Word has length 31 [2020-09-04 13:44:11,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:44:11,258 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 75 transitions. [2020-09-04 13:44:11,258 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-04 13:44:11,258 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 75 transitions. [2020-09-04 13:44:11,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-04 13:44:11,259 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:44:11,260 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:44:11,260 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-04 13:44:11,260 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:44:11,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:44:11,260 INFO L82 PathProgramCache]: Analyzing trace with hash 1617190790, now seen corresponding path program 1 times [2020-09-04 13:44:11,261 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:44:11,261 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948708238] [2020-09-04 13:44:11,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:44:11,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:44:11,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:44:11,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:44:11,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-04 13:44:11,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:44:11,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-09-04 13:44:11,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:44:11,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-04 13:44:11,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:44:11,403 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-04 13:44:11,404 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948708238] [2020-09-04 13:44:11,406 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 13:44:11,406 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-04 13:44:11,406 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578673622] [2020-09-04 13:44:11,410 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-04 13:44:11,410 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:44:11,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-04 13:44:11,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-04 13:44:11,411 INFO L87 Difference]: Start difference. First operand 61 states and 75 transitions. Second operand 8 states. [2020-09-04 13:44:11,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:44:11,633 INFO L93 Difference]: Finished difference Result 72 states and 86 transitions. [2020-09-04 13:44:11,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-04 13:44:11,634 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 33 [2020-09-04 13:44:11,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:44:11,636 INFO L225 Difference]: With dead ends: 72 [2020-09-04 13:44:11,636 INFO L226 Difference]: Without dead ends: 70 [2020-09-04 13:44:11,636 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2020-09-04 13:44:11,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-09-04 13:44:11,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 65. [2020-09-04 13:44:11,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-09-04 13:44:11,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 78 transitions. [2020-09-04 13:44:11,663 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 78 transitions. Word has length 33 [2020-09-04 13:44:11,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:44:11,663 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 78 transitions. [2020-09-04 13:44:11,663 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-04 13:44:11,665 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 78 transitions. [2020-09-04 13:44:11,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-09-04 13:44:11,668 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:44:11,668 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 7, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:44:11,668 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-04 13:44:11,668 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:44:11,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:44:11,673 INFO L82 PathProgramCache]: Analyzing trace with hash 260855770, now seen corresponding path program 1 times [2020-09-04 13:44:11,673 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:44:11,674 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602918919] [2020-09-04 13:44:11,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:44:11,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:44:11,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:44:11,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:44:11,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-04 13:44:11,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:44:11,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-09-04 13:44:11,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:44:11,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-04 13:44:11,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:44:11,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-09-04 13:44:11,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:44:11,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-04 13:44:11,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:44:11,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-09-04 13:44:11,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:44:11,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-09-04 13:44:11,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:44:11,932 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-09-04 13:44:11,933 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602918919] [2020-09-04 13:44:11,933 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1980616364] [2020-09-04 13:44:11,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-04 13:44:11,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:44:11,986 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 10 conjunts are in the unsatisfiable core [2020-09-04 13:44:11,995 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-04 13:44:12,248 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-09-04 13:44:12,294 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-09-04 13:44:12,294 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-04 13:44:12,294 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2020-09-04 13:44:12,295 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660231796] [2020-09-04 13:44:12,296 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-04 13:44:12,296 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:44:12,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-04 13:44:12,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2020-09-04 13:44:12,297 INFO L87 Difference]: Start difference. First operand 65 states and 78 transitions. Second operand 15 states. [2020-09-04 13:44:12,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:44:12,863 INFO L93 Difference]: Finished difference Result 110 states and 146 transitions. [2020-09-04 13:44:12,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-04 13:44:12,864 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 56 [2020-09-04 13:44:12,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:44:12,868 INFO L225 Difference]: With dead ends: 110 [2020-09-04 13:44:12,868 INFO L226 Difference]: Without dead ends: 95 [2020-09-04 13:44:12,870 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 66 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=146, Invalid=406, Unknown=0, NotChecked=0, Total=552 [2020-09-04 13:44:12,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2020-09-04 13:44:12,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 87. [2020-09-04 13:44:12,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-09-04 13:44:12,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 107 transitions. [2020-09-04 13:44:12,887 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 107 transitions. Word has length 56 [2020-09-04 13:44:12,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:44:12,887 INFO L479 AbstractCegarLoop]: Abstraction has 87 states and 107 transitions. [2020-09-04 13:44:12,888 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-04 13:44:12,888 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 107 transitions. [2020-09-04 13:44:12,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-09-04 13:44:12,889 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:44:12,889 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:44:13,101 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2020-09-04 13:44:13,102 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:44:13,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:44:13,103 INFO L82 PathProgramCache]: Analyzing trace with hash 266725463, now seen corresponding path program 1 times [2020-09-04 13:44:13,103 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:44:13,103 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549497728] [2020-09-04 13:44:13,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:44:13,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:44:13,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:44:13,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:44:13,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-04 13:44:13,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:44:13,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-09-04 13:44:13,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:44:13,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-04 13:44:13,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:44:13,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-09-04 13:44:13,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:44:13,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-04 13:44:13,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:44:13,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-09-04 13:44:13,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:44:13,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-09-04 13:44:13,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:44:13,253 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 14 proven. 9 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-09-04 13:44:13,253 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549497728] [2020-09-04 13:44:13,254 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [470903416] [2020-09-04 13:44:13,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-04 13:44:13,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:44:13,304 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 8 conjunts are in the unsatisfiable core [2020-09-04 13:44:13,308 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-04 13:44:13,394 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-09-04 13:44:13,397 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-09-04 13:44:13,426 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 14 proven. 9 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-09-04 13:44:13,427 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-04 13:44:13,427 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2020-09-04 13:44:13,427 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581458191] [2020-09-04 13:44:13,428 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-04 13:44:13,428 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:44:13,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-04 13:44:13,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2020-09-04 13:44:13,429 INFO L87 Difference]: Start difference. First operand 87 states and 107 transitions. Second operand 14 states. [2020-09-04 13:44:13,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:44:13,629 INFO L93 Difference]: Finished difference Result 93 states and 112 transitions. [2020-09-04 13:44:13,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-04 13:44:13,631 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 58 [2020-09-04 13:44:13,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:44:13,634 INFO L225 Difference]: With dead ends: 93 [2020-09-04 13:44:13,635 INFO L226 Difference]: Without dead ends: 91 [2020-09-04 13:44:13,636 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 69 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=82, Invalid=260, Unknown=0, NotChecked=0, Total=342 [2020-09-04 13:44:13,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-09-04 13:44:13,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2020-09-04 13:44:13,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-09-04 13:44:13,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 110 transitions. [2020-09-04 13:44:13,649 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 110 transitions. Word has length 58 [2020-09-04 13:44:13,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:44:13,650 INFO L479 AbstractCegarLoop]: Abstraction has 91 states and 110 transitions. [2020-09-04 13:44:13,650 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-04 13:44:13,650 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 110 transitions. [2020-09-04 13:44:13,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-09-04 13:44:13,652 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:44:13,652 INFO L422 BasicCegarLoop]: trace histogram [12, 11, 11, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:44:13,859 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-04 13:44:13,860 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:44:13,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:44:13,861 INFO L82 PathProgramCache]: Analyzing trace with hash 437927078, now seen corresponding path program 2 times [2020-09-04 13:44:13,861 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:44:13,862 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581358834] [2020-09-04 13:44:13,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:44:13,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:44:14,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:44:14,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:44:14,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-04 13:44:14,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:44:14,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-09-04 13:44:14,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:44:14,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-04 13:44:14,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:44:14,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-09-04 13:44:14,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:44:14,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-04 13:44:14,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:44:14,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-09-04 13:44:14,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:44:14,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-09-04 13:44:14,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:44:14,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-09-04 13:44:14,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:44:14,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-09-04 13:44:14,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:44:14,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-09-04 13:44:14,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:44:14,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-09-04 13:44:14,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:44:14,157 INFO L134 CoverageAnalysis]: Checked inductivity of 269 backedges. 22 proven. 27 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2020-09-04 13:44:14,158 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581358834] [2020-09-04 13:44:14,158 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1864461360] [2020-09-04 13:44:14,159 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-04 13:44:14,223 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-09-04 13:44:14,223 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-04 13:44:14,225 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 14 conjunts are in the unsatisfiable core [2020-09-04 13:44:14,239 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-04 13:44:14,412 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-09-04 13:44:14,414 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-09-04 13:44:14,450 INFO L134 CoverageAnalysis]: Checked inductivity of 269 backedges. 22 proven. 27 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2020-09-04 13:44:14,450 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-04 13:44:14,450 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2020-09-04 13:44:14,451 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475144243] [2020-09-04 13:44:14,451 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-09-04 13:44:14,452 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:44:14,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-09-04 13:44:14,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2020-09-04 13:44:14,453 INFO L87 Difference]: Start difference. First operand 91 states and 110 transitions. Second operand 18 states. [2020-09-04 13:44:14,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:44:14,906 INFO L93 Difference]: Finished difference Result 112 states and 134 transitions. [2020-09-04 13:44:14,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-04 13:44:14,906 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 83 [2020-09-04 13:44:14,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:44:14,911 INFO L225 Difference]: With dead ends: 112 [2020-09-04 13:44:14,911 INFO L226 Difference]: Without dead ends: 110 [2020-09-04 13:44:14,912 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 99 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=155, Invalid=547, Unknown=0, NotChecked=0, Total=702 [2020-09-04 13:44:14,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-09-04 13:44:14,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 99. [2020-09-04 13:44:14,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-09-04 13:44:14,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 116 transitions. [2020-09-04 13:44:14,939 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 116 transitions. Word has length 83 [2020-09-04 13:44:14,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:44:14,942 INFO L479 AbstractCegarLoop]: Abstraction has 99 states and 116 transitions. [2020-09-04 13:44:14,943 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-09-04 13:44:14,943 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 116 transitions. [2020-09-04 13:44:14,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-09-04 13:44:14,945 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:44:14,945 INFO L422 BasicCegarLoop]: trace histogram [16, 15, 15, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:44:15,155 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-04 13:44:15,155 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:44:15,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:44:15,156 INFO L82 PathProgramCache]: Analyzing trace with hash 314554042, now seen corresponding path program 2 times [2020-09-04 13:44:15,157 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:44:15,157 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150497372] [2020-09-04 13:44:15,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:44:15,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:44:15,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:44:15,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:44:15,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-04 13:44:15,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:44:15,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-09-04 13:44:15,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:44:15,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-04 13:44:15,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:44:15,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-09-04 13:44:15,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:44:15,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-04 13:44:15,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:44:15,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-09-04 13:44:15,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:44:15,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-09-04 13:44:15,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:44:15,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-09-04 13:44:15,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:44:15,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-09-04 13:44:15,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:44:15,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-09-04 13:44:15,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:44:15,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-09-04 13:44:15,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:44:15,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-09-04 13:44:15,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:44:15,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 13:44:15,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:44:15,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-09-04 13:44:15,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:44:15,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-09-04 13:44:15,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:44:15,555 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 30 proven. 27 refuted. 0 times theorem prover too weak. 426 trivial. 0 not checked. [2020-09-04 13:44:15,556 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150497372] [2020-09-04 13:44:15,556 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1689271354] [2020-09-04 13:44:15,556 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-04 13:44:15,619 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-09-04 13:44:15,619 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-04 13:44:15,621 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 14 conjunts are in the unsatisfiable core [2020-09-04 13:44:15,632 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-04 13:44:15,748 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-09-04 13:44:15,798 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 68 proven. 22 refuted. 0 times theorem prover too weak. 393 trivial. 0 not checked. [2020-09-04 13:44:15,799 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-04 13:44:15,799 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 17 [2020-09-04 13:44:15,799 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607648151] [2020-09-04 13:44:15,801 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-04 13:44:15,801 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:44:15,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-04 13:44:15,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2020-09-04 13:44:15,803 INFO L87 Difference]: Start difference. First operand 99 states and 116 transitions. Second operand 17 states. [2020-09-04 13:44:16,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:44:16,084 INFO L93 Difference]: Finished difference Result 105 states and 121 transitions. [2020-09-04 13:44:16,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-04 13:44:16,084 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 106 [2020-09-04 13:44:16,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:44:16,086 INFO L225 Difference]: With dead ends: 105 [2020-09-04 13:44:16,086 INFO L226 Difference]: Without dead ends: 96 [2020-09-04 13:44:16,089 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 132 SyntacticMatches, 3 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=92, Invalid=370, Unknown=0, NotChecked=0, Total=462 [2020-09-04 13:44:16,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-09-04 13:44:16,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2020-09-04 13:44:16,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-09-04 13:44:16,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 103 transitions. [2020-09-04 13:44:16,110 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 103 transitions. Word has length 106 [2020-09-04 13:44:16,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:44:16,114 INFO L479 AbstractCegarLoop]: Abstraction has 96 states and 103 transitions. [2020-09-04 13:44:16,114 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-04 13:44:16,114 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 103 transitions. [2020-09-04 13:44:16,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-09-04 13:44:16,118 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:44:16,118 INFO L422 BasicCegarLoop]: trace histogram [16, 15, 15, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:44:16,319 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-04 13:44:16,320 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:44:16,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:44:16,320 INFO L82 PathProgramCache]: Analyzing trace with hash 331157303, now seen corresponding path program 3 times [2020-09-04 13:44:16,321 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:44:16,321 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221272850] [2020-09-04 13:44:16,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:44:16,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:44:16,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:44:16,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:44:16,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-04 13:44:16,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:44:16,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-09-04 13:44:16,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:44:16,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-04 13:44:16,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:44:16,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-09-04 13:44:16,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:44:16,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-04 13:44:16,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:44:16,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-09-04 13:44:16,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:44:16,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-09-04 13:44:16,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:44:16,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-09-04 13:44:16,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:44:16,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-09-04 13:44:16,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:44:16,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-09-04 13:44:16,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:44:16,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-09-04 13:44:16,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:44:16,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-09-04 13:44:16,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:44:16,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-04 13:44:16,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:44:16,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-09-04 13:44:16,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:44:16,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 13:44:16,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:44:16,737 INFO L134 CoverageAnalysis]: Checked inductivity of 504 backedges. 30 proven. 51 refuted. 0 times theorem prover too weak. 423 trivial. 0 not checked. [2020-09-04 13:44:16,738 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221272850] [2020-09-04 13:44:16,738 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [83472291] [2020-09-04 13:44:16,738 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-04 13:44:16,800 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2020-09-04 13:44:16,800 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-04 13:44:16,801 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 18 conjunts are in the unsatisfiable core [2020-09-04 13:44:16,807 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-04 13:44:17,105 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-09-04 13:44:17,109 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-09-04 13:44:17,161 INFO L134 CoverageAnalysis]: Checked inductivity of 504 backedges. 68 proven. 58 refuted. 0 times theorem prover too weak. 378 trivial. 0 not checked. [2020-09-04 13:44:17,161 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-04 13:44:17,162 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 16] total 26 [2020-09-04 13:44:17,162 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198783846] [2020-09-04 13:44:17,163 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-09-04 13:44:17,163 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:44:17,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-09-04 13:44:17,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=568, Unknown=0, NotChecked=0, Total=650 [2020-09-04 13:44:17,164 INFO L87 Difference]: Start difference. First operand 96 states and 103 transitions. Second operand 26 states. [2020-09-04 13:44:18,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:44:18,704 INFO L93 Difference]: Finished difference Result 111 states and 121 transitions. [2020-09-04 13:44:18,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-09-04 13:44:18,706 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 108 [2020-09-04 13:44:18,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:44:18,707 INFO L225 Difference]: With dead ends: 111 [2020-09-04 13:44:18,707 INFO L226 Difference]: Without dead ends: 0 [2020-09-04 13:44:18,709 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 522 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=366, Invalid=1796, Unknown=0, NotChecked=0, Total=2162 [2020-09-04 13:44:18,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-04 13:44:18,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-04 13:44:18,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-04 13:44:18,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-04 13:44:18,713 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 108 [2020-09-04 13:44:18,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:44:18,713 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-04 13:44:18,713 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-09-04 13:44:18,714 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-04 13:44:18,714 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-04 13:44:18,914 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2020-09-04 13:44:18,918 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-04 13:44:19,755 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-09-04 13:44:19,755 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-04 13:44:19,756 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-04 13:44:19,756 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-04 13:44:19,756 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-04 13:44:19,756 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-04 13:44:19,756 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed. [2020-09-04 13:44:19,756 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-09-04 13:44:19,757 INFO L268 CegarLoopResult]: For program point L4-2(lines 3 5) no Hoare annotation was computed. [2020-09-04 13:44:19,757 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed. [2020-09-04 13:44:19,757 INFO L268 CegarLoopResult]: For program point L31(line 31) no Hoare annotation was computed. [2020-09-04 13:44:19,757 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 13 45) no Hoare annotation was computed. [2020-09-04 13:44:19,757 INFO L271 CegarLoopResult]: At program point L44(lines 14 45) the Hoare annotation is: true [2020-09-04 13:44:19,758 INFO L264 CegarLoopResult]: At program point L36(lines 26 37) the Hoare annotation is: (let ((.cse0 (= main_~bufferlen~0 (+ main_~buflim~0 2))) (.cse1 (< main_~buf~0 (+ main_~buflim~0 1))) (.cse2 (<= (+ main_~in~0 main_~buflim~0 3) (+ main_~buf~0 main_~inlen~0)))) (or (and (<= 0 main_~buf~0) .cse0 .cse1 (<= 1 main_~in~0) .cse2 (<= (+ main_~bufferlen~0 1) main_~inlen~0)) (and .cse0 .cse1 (= main_~buf~0 0) .cse2 (<= 0 main_~in~0)))) [2020-09-04 13:44:19,758 INFO L268 CegarLoopResult]: For program point L28(lines 28 29) no Hoare annotation was computed. [2020-09-04 13:44:19,758 INFO L268 CegarLoopResult]: For program point L20(line 20) no Hoare annotation was computed. [2020-09-04 13:44:19,758 INFO L268 CegarLoopResult]: For program point L20-1(lines 14 45) no Hoare annotation was computed. [2020-09-04 13:44:19,758 INFO L264 CegarLoopResult]: At program point L41(line 41) the Hoare annotation is: (and (<= 0 main_~buf~0) (<= (+ main_~buf~0 1) main_~bufferlen~0) (<= 2 main_~bufferlen~0) (<= 0 main_~in~0)) [2020-09-04 13:44:19,759 INFO L264 CegarLoopResult]: At program point L41-1(line 41) the Hoare annotation is: (and (<= 0 main_~buf~0) (<= (+ main_~buf~0 1) main_~bufferlen~0) (<= 2 main_~bufferlen~0) (<= 0 main_~in~0)) [2020-09-04 13:44:19,759 INFO L268 CegarLoopResult]: For program point L33(lines 33 34) no Hoare annotation was computed. [2020-09-04 13:44:19,759 INFO L268 CegarLoopResult]: For program point L21(lines 14 45) no Hoare annotation was computed. [2020-09-04 13:44:19,759 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 13 45) no Hoare annotation was computed. [2020-09-04 13:44:19,759 INFO L268 CegarLoopResult]: For program point L42(line 42) no Hoare annotation was computed. [2020-09-04 13:44:19,759 INFO L264 CegarLoopResult]: At program point L38(line 38) the Hoare annotation is: (and (<= 0 main_~buf~0) (<= (+ main_~buf~0 2) main_~bufferlen~0) (<= 0 main_~in~0)) [2020-09-04 13:44:19,760 INFO L264 CegarLoopResult]: At program point L30(line 30) the Hoare annotation is: (let ((.cse0 (= main_~bufferlen~0 (+ main_~buflim~0 2))) (.cse1 (< main_~buf~0 main_~buflim~0)) (.cse2 (<= (+ main_~in~0 main_~buflim~0 3) (+ main_~buf~0 main_~inlen~0)))) (or (and .cse0 .cse1 (= main_~buf~0 0) .cse2 (<= 0 main_~in~0)) (and (<= 0 main_~buf~0) .cse0 .cse1 (<= 1 main_~in~0) .cse2 (<= (+ main_~bufferlen~0 1) main_~inlen~0)))) [2020-09-04 13:44:19,760 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 13 45) the Hoare annotation is: true [2020-09-04 13:44:19,760 INFO L264 CegarLoopResult]: At program point L30-1(line 30) the Hoare annotation is: (let ((.cse0 (= main_~bufferlen~0 (+ main_~buflim~0 2))) (.cse1 (< main_~buf~0 main_~buflim~0)) (.cse2 (<= (+ main_~in~0 main_~buflim~0 3) (+ main_~buf~0 main_~inlen~0)))) (or (and .cse0 .cse1 (= main_~buf~0 0) .cse2 (<= 0 main_~in~0)) (and (<= 0 main_~buf~0) .cse0 .cse1 (<= 1 main_~in~0) .cse2 (<= (+ main_~bufferlen~0 1) main_~inlen~0)))) [2020-09-04 13:44:19,760 INFO L268 CegarLoopResult]: For program point L26-1(lines 26 37) no Hoare annotation was computed. [2020-09-04 13:44:19,761 INFO L264 CegarLoopResult]: At program point L26-3(lines 26 37) the Hoare annotation is: (and (<= 0 main_~buf~0) (<= (+ main_~buf~0 2) main_~bufferlen~0) (<= 0 main_~in~0)) [2020-09-04 13:44:19,761 INFO L268 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2020-09-04 13:44:19,761 INFO L268 CegarLoopResult]: For program point L39(line 39) no Hoare annotation was computed. [2020-09-04 13:44:19,761 INFO L264 CegarLoopResult]: At program point L35(line 35) the Hoare annotation is: (and (<= 0 main_~buf~0) (= main_~bufferlen~0 (+ main_~buflim~0 2)) (< main_~buf~0 (+ main_~buflim~0 1)) (<= 1 main_~in~0) (<= (+ main_~in~0 main_~buflim~0 3) (+ main_~buf~0 main_~inlen~0)) (<= (+ main_~bufferlen~0 1) main_~inlen~0)) [2020-09-04 13:44:19,761 INFO L264 CegarLoopResult]: At program point L35-1(line 35) the Hoare annotation is: (and (<= 0 main_~buf~0) (= main_~bufferlen~0 (+ main_~buflim~0 2)) (< main_~buf~0 (+ main_~buflim~0 1)) (<= 1 main_~in~0) (<= (+ main_~in~0 main_~buflim~0 3) (+ main_~buf~0 main_~inlen~0)) (<= (+ main_~bufferlen~0 1) main_~inlen~0)) [2020-09-04 13:44:19,762 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2020-09-04 13:44:19,762 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 6 11) no Hoare annotation was computed. [2020-09-04 13:44:19,762 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-09-04 13:44:19,762 INFO L268 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed. [2020-09-04 13:44:19,762 INFO L268 CegarLoopResult]: For program point L7-2(lines 6 11) no Hoare annotation was computed. [2020-09-04 13:44:19,762 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-09-04 13:44:19,785 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 01:44:19 BoogieIcfgContainer [2020-09-04 13:44:19,785 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 13:44:19,789 INFO L168 Benchmark]: Toolchain (without parser) took 11012.29 ms. Allocated memory was 148.4 MB in the beginning and 304.6 MB in the end (delta: 156.2 MB). Free memory was 103.6 MB in the beginning and 233.3 MB in the end (delta: -129.7 MB). Peak memory consumption was 140.3 MB. Max. memory is 7.1 GB. [2020-09-04 13:44:19,790 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 148.4 MB. Free memory was 121.7 MB in the beginning and 121.2 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. [2020-09-04 13:44:19,791 INFO L168 Benchmark]: CACSL2BoogieTranslator took 292.84 ms. Allocated memory is still 148.4 MB. Free memory was 103.2 MB in the beginning and 93.2 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. [2020-09-04 13:44:19,792 INFO L168 Benchmark]: Boogie Preprocessor took 131.18 ms. Allocated memory was 148.4 MB in the beginning and 205.0 MB in the end (delta: 56.6 MB). Free memory was 93.2 MB in the beginning and 183.8 MB in the end (delta: -90.6 MB). Peak memory consumption was 10.9 MB. Max. memory is 7.1 GB. [2020-09-04 13:44:19,793 INFO L168 Benchmark]: RCFGBuilder took 352.01 ms. Allocated memory is still 205.0 MB. Free memory was 183.8 MB in the beginning and 168.4 MB in the end (delta: 15.4 MB). Peak memory consumption was 15.4 MB. Max. memory is 7.1 GB. [2020-09-04 13:44:19,794 INFO L168 Benchmark]: TraceAbstraction took 10219.44 ms. Allocated memory was 205.0 MB in the beginning and 304.6 MB in the end (delta: 99.6 MB). Free memory was 168.4 MB in the beginning and 233.3 MB in the end (delta: -65.0 MB). Peak memory consumption was 148.5 MB. Max. memory is 7.1 GB. [2020-09-04 13:44:19,798 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 148.4 MB. Free memory was 121.7 MB in the beginning and 121.2 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 292.84 ms. Allocated memory is still 148.4 MB. Free memory was 103.2 MB in the beginning and 93.2 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 131.18 ms. Allocated memory was 148.4 MB in the beginning and 205.0 MB in the end (delta: 56.6 MB). Free memory was 93.2 MB in the beginning and 183.8 MB in the end (delta: -90.6 MB). Peak memory consumption was 10.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 352.01 ms. Allocated memory is still 205.0 MB. Free memory was 183.8 MB in the beginning and 168.4 MB in the end (delta: 15.4 MB). Peak memory consumption was 15.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 10219.44 ms. Allocated memory was 205.0 MB in the beginning and 304.6 MB in the end (delta: 99.6 MB). Free memory was 168.4 MB in the beginning and 233.3 MB in the end (delta: -65.0 MB). Peak memory consumption was 148.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 8]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 26]: Loop Invariant Derived loop invariant: (((((0 <= buf && bufferlen == buflim + 2) && buf < buflim + 1) && 1 <= in) && in + buflim + 3 <= buf + inlen) && bufferlen + 1 <= inlen) || ((((bufferlen == buflim + 2 && buf < buflim + 1) && buf == 0) && in + buflim + 3 <= buf + inlen) && 0 <= in) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 39 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 9.2s, OverallIterations: 11, TraceHistogramMax: 16, AutomataDifference: 4.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.8s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 448 SDtfs, 473 SDslu, 1904 SDs, 0 SdLazy, 1480 SolverSat, 551 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 706 GetRequests, 537 SyntacticMatches, 7 SemanticMatches, 162 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 942 ImplicationChecksByTransitivity, 2.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=99occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 11 MinimizatonAttempts, 33 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 15 LocationsWithAnnotation, 64 PreInvPairs, 113 NumberOfFragments, 280 HoareAnnotationTreeSize, 64 FomulaSimplifications, 1702 FormulaSimplificationTreeSizeReduction, 0.3s HoareSimplificationTime, 15 FomulaSimplificationsInter, 956 FormulaSimplificationTreeSizeReductionInter, 0.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 3.0s InterpolantComputationTime, 963 NumberOfCodeBlocks, 958 NumberOfCodeBlocksAsserted, 23 NumberOfCheckSat, 947 ConstructedInterpolants, 0 QuantifiedInterpolants, 249788 SizeOfPredicates, 20 NumberOfNonLiveVariables, 782 ConjunctsInSsa, 64 ConjunctsInUnsatCore, 16 InterpolantComputations, 6 PerfectInterpolantSequences, 2738/2972 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...