/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive-simple/id2_b2_o3.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 13:20:53,379 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 13:20:53,388 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 13:20:53,435 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 13:20:53,435 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 13:20:53,445 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 13:20:53,449 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 13:20:53,453 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 13:20:53,456 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 13:20:53,459 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 13:20:53,460 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 13:20:53,461 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 13:20:53,461 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 13:20:53,465 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 13:20:53,468 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 13:20:53,470 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 13:20:53,472 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 13:20:53,473 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 13:20:53,474 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 13:20:53,484 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 13:20:53,487 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 13:20:53,488 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 13:20:53,489 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 13:20:53,490 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 13:20:53,504 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-04 13:20:53,519 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 13:20:53,521 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 13:20:53,521 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 13:20:53,523 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 13:20:53,570 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 13:20:53,570 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 13:20:53,573 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-04 13:20:53,574 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-04 13:20:53,574 INFO L138 SettingsManager]: * Use SBE=true [2020-09-04 13:20:53,574 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 13:20:53,574 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 13:20:53,575 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 13:20:53,575 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 13:20:53,575 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 13:20:53,576 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 13:20:53,577 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 13:20:53,577 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 13:20:53,577 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 13:20:53,578 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 13:20:53,578 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 13:20:53,579 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 13:20:53,579 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 13:20:53,579 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-04 13:20:53,579 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 13:20:53,580 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 13:20:53,580 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 13:20:53,580 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 13:20:53,581 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-04 13:20:53,581 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-04 13:20:53,581 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-04 13:20:53,581 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-04 13:20:53,581 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 13:20:53,582 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-04 13:20:53,582 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-09-04 13:20:54,054 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 13:20:54,074 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 13:20:54,078 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 13:20:54,080 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 13:20:54,080 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 13:20:54,081 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/id2_b2_o3.c [2020-09-04 13:20:54,172 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3a4505e1b/1f3d6dc0b04245ab9a2616a33c9b6edc/FLAGcaec77fa6 [2020-09-04 13:20:54,777 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 13:20:54,778 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/id2_b2_o3.c [2020-09-04 13:20:54,785 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3a4505e1b/1f3d6dc0b04245ab9a2616a33c9b6edc/FLAGcaec77fa6 [2020-09-04 13:20:55,115 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3a4505e1b/1f3d6dc0b04245ab9a2616a33c9b6edc [2020-09-04 13:20:55,132 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 13:20:55,135 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 13:20:55,139 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 13:20:55,139 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 13:20:55,144 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 13:20:55,146 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 01:20:55" (1/1) ... [2020-09-04 13:20:55,151 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57e07dc7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:20:55, skipping insertion in model container [2020-09-04 13:20:55,151 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 01:20:55" (1/1) ... [2020-09-04 13:20:55,162 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 13:20:55,195 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 13:20:55,528 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 13:20:55,536 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 13:20:55,560 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 13:20:55,582 INFO L208 MainTranslator]: Completed translation [2020-09-04 13:20:55,583 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:20:55 WrapperNode [2020-09-04 13:20:55,584 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 13:20:55,585 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 13:20:55,585 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 13:20:55,585 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 13:20:55,607 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:20:55" (1/1) ... [2020-09-04 13:20:55,608 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:20:55" (1/1) ... [2020-09-04 13:20:55,745 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:20:55" (1/1) ... [2020-09-04 13:20:55,746 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:20:55" (1/1) ... [2020-09-04 13:20:55,753 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:20:55" (1/1) ... [2020-09-04 13:20:55,760 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:20:55" (1/1) ... [2020-09-04 13:20:55,761 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:20:55" (1/1) ... [2020-09-04 13:20:55,770 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 13:20:55,771 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 13:20:55,771 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 13:20:55,771 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 13:20:55,773 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:20:55" (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 13:20:55,873 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 13:20:55,874 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 13:20:55,874 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2020-09-04 13:20:55,874 INFO L138 BoogieDeclarations]: Found implementation of procedure id2 [2020-09-04 13:20:55,874 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 13:20:55,875 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-09-04 13:20:55,875 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 13:20:55,875 INFO L130 BoogieDeclarations]: Found specification of procedure id [2020-09-04 13:20:55,876 INFO L130 BoogieDeclarations]: Found specification of procedure id2 [2020-09-04 13:20:55,876 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 13:20:55,876 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 13:20:55,877 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 13:20:56,114 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 13:20:56,114 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-04 13:20:56,119 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 01:20:56 BoogieIcfgContainer [2020-09-04 13:20:56,120 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 13:20:56,121 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 13:20:56,122 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 13:20:56,126 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 13:20:56,127 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 01:20:55" (1/3) ... [2020-09-04 13:20:56,128 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18d2970 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 01:20:56, skipping insertion in model container [2020-09-04 13:20:56,128 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:20:55" (2/3) ... [2020-09-04 13:20:56,128 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18d2970 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 01:20:56, skipping insertion in model container [2020-09-04 13:20:56,129 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 01:20:56" (3/3) ... [2020-09-04 13:20:56,131 INFO L109 eAbstractionObserver]: Analyzing ICFG id2_b2_o3.c [2020-09-04 13:20:56,145 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-09-04 13:20:56,171 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 13:20:56,218 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 13:20:56,260 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 13:20:56,261 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 13:20:56,261 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-04 13:20:56,261 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 13:20:56,261 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 13:20:56,261 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 13:20:56,262 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 13:20:56,262 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 13:20:56,291 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2020-09-04 13:20:56,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-04 13:20:56,301 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:20:56,302 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:20:56,303 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:20:56,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:20:56,314 INFO L82 PathProgramCache]: Analyzing trace with hash 128923731, now seen corresponding path program 1 times [2020-09-04 13:20:56,329 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:20:56,329 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759485149] [2020-09-04 13:20:56,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:20:56,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:20:56,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:20:56,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:20:56,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-04 13:20:56,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:20:56,703 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 13:20:56,704 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759485149] [2020-09-04 13:20:56,705 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 13:20:56,706 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-04 13:20:56,707 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135005331] [2020-09-04 13:20:56,714 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-04 13:20:56,715 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:20:56,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-04 13:20:56,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-04 13:20:56,737 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 5 states. [2020-09-04 13:20:56,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:20:56,809 INFO L93 Difference]: Finished difference Result 40 states and 46 transitions. [2020-09-04 13:20:56,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-04 13:20:56,812 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-09-04 13:20:56,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:20:56,824 INFO L225 Difference]: With dead ends: 40 [2020-09-04 13:20:56,825 INFO L226 Difference]: Without dead ends: 26 [2020-09-04 13:20:56,829 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-04 13:20:56,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-09-04 13:20:56,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-09-04 13:20:56,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-09-04 13:20:56,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2020-09-04 13:20:56,882 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 13 [2020-09-04 13:20:56,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:20:56,883 INFO L479 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2020-09-04 13:20:56,883 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-04 13:20:56,884 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2020-09-04 13:20:56,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-09-04 13:20:56,886 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:20:56,886 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:20:56,887 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 13:20:56,887 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:20:56,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:20:56,888 INFO L82 PathProgramCache]: Analyzing trace with hash 1945633833, now seen corresponding path program 1 times [2020-09-04 13:20:56,888 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:20:56,888 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153305478] [2020-09-04 13:20:56,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:20:56,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:20:57,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:20:57,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:20:57,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-04 13:20:57,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:20:57,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 13:20:57,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:20:57,077 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 13:20:57,078 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153305478] [2020-09-04 13:20:57,078 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 13:20:57,078 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-04 13:20:57,079 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368708546] [2020-09-04 13:20:57,081 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-04 13:20:57,081 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:20:57,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-04 13:20:57,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-04 13:20:57,082 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand 5 states. [2020-09-04 13:20:57,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:20:57,111 INFO L93 Difference]: Finished difference Result 32 states and 36 transitions. [2020-09-04 13:20:57,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-04 13:20:57,112 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2020-09-04 13:20:57,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:20:57,114 INFO L225 Difference]: With dead ends: 32 [2020-09-04 13:20:57,114 INFO L226 Difference]: Without dead ends: 28 [2020-09-04 13:20:57,115 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-04 13:20:57,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-09-04 13:20:57,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 26. [2020-09-04 13:20:57,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-09-04 13:20:57,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2020-09-04 13:20:57,124 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 20 [2020-09-04 13:20:57,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:20:57,124 INFO L479 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2020-09-04 13:20:57,125 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-04 13:20:57,125 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2020-09-04 13:20:57,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-09-04 13:20:57,126 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:20:57,126 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:20:57,127 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 13:20:57,127 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:20:57,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:20:57,128 INFO L82 PathProgramCache]: Analyzing trace with hash 1974262984, now seen corresponding path program 1 times [2020-09-04 13:20:57,128 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:20:57,128 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375764278] [2020-09-04 13:20:57,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:20:57,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:20:57,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:20:57,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:20:57,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-04 13:20:57,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:20:57,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 13:20:57,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:20:57,404 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 13:20:57,404 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375764278] [2020-09-04 13:20:57,405 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 13:20:57,405 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-04 13:20:57,405 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303052402] [2020-09-04 13:20:57,408 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-04 13:20:57,408 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:20:57,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-04 13:20:57,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-09-04 13:20:57,409 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand 8 states. [2020-09-04 13:20:57,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:20:57,523 INFO L93 Difference]: Finished difference Result 48 states and 56 transitions. [2020-09-04 13:20:57,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-04 13:20:57,526 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 20 [2020-09-04 13:20:57,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:20:57,528 INFO L225 Difference]: With dead ends: 48 [2020-09-04 13:20:57,528 INFO L226 Difference]: Without dead ends: 32 [2020-09-04 13:20:57,530 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-04 13:20:57,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-09-04 13:20:57,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2020-09-04 13:20:57,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-09-04 13:20:57,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2020-09-04 13:20:57,549 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 20 [2020-09-04 13:20:57,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:20:57,551 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2020-09-04 13:20:57,551 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-04 13:20:57,551 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2020-09-04 13:20:57,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-04 13:20:57,554 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:20:57,557 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 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 13:20:57,557 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-04 13:20:57,557 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:20:57,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:20:57,560 INFO L82 PathProgramCache]: Analyzing trace with hash 1451784300, now seen corresponding path program 1 times [2020-09-04 13:20:57,560 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:20:57,561 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806377777] [2020-09-04 13:20:57,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:20:57,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:20:57,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:20:57,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:20:57,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-04 13:20:57,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:20:57,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 13:20:57,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:20:57,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 13:20:57,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:20:57,817 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-04 13:20:57,818 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806377777] [2020-09-04 13:20:57,819 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 13:20:57,819 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-04 13:20:57,821 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027401981] [2020-09-04 13:20:57,823 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-04 13:20:57,823 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:20:57,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-04 13:20:57,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-04 13:20:57,824 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand 5 states. [2020-09-04 13:20:57,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:20:57,864 INFO L93 Difference]: Finished difference Result 50 states and 57 transitions. [2020-09-04 13:20:57,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-04 13:20:57,865 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2020-09-04 13:20:57,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:20:57,868 INFO L225 Difference]: With dead ends: 50 [2020-09-04 13:20:57,868 INFO L226 Difference]: Without dead ends: 36 [2020-09-04 13:20:57,869 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-04 13:20:57,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-09-04 13:20:57,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 34. [2020-09-04 13:20:57,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-09-04 13:20:57,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2020-09-04 13:20:57,888 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 27 [2020-09-04 13:20:57,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:20:57,889 INFO L479 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2020-09-04 13:20:57,889 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-04 13:20:57,889 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2020-09-04 13:20:57,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-04 13:20:57,891 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:20:57,909 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 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 13:20:57,909 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-04 13:20:57,910 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:20:57,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:20:57,910 INFO L82 PathProgramCache]: Analyzing trace with hash 1255270795, now seen corresponding path program 1 times [2020-09-04 13:20:57,912 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:20:57,912 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307634531] [2020-09-04 13:20:57,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:20:57,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:20:57,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:20:57,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:20:57,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-04 13:20:57,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:20:58,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 13:20:58,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:20:58,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 13:20:58,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:20:58,146 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-04 13:20:58,147 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307634531] [2020-09-04 13:20:58,147 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1304308464] [2020-09-04 13:20:58,148 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 13:20:58,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:20:58,196 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 19 conjunts are in the unsatisfiable core [2020-09-04 13:20:58,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-04 13:20:58,342 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-04 13:20:58,342 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-04 13:20:58,343 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2020-09-04 13:20:58,343 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872105391] [2020-09-04 13:20:58,344 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-04 13:20:58,344 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:20:58,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-04 13:20:58,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2020-09-04 13:20:58,345 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand 12 states. [2020-09-04 13:20:58,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:20:58,460 INFO L93 Difference]: Finished difference Result 66 states and 75 transitions. [2020-09-04 13:20:58,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-04 13:20:58,460 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 27 [2020-09-04 13:20:58,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:20:58,462 INFO L225 Difference]: With dead ends: 66 [2020-09-04 13:20:58,462 INFO L226 Difference]: Without dead ends: 46 [2020-09-04 13:20:58,463 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2020-09-04 13:20:58,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-09-04 13:20:58,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 38. [2020-09-04 13:20:58,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-09-04 13:20:58,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 42 transitions. [2020-09-04 13:20:58,471 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 42 transitions. Word has length 27 [2020-09-04 13:20:58,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:20:58,472 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 42 transitions. [2020-09-04 13:20:58,472 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-04 13:20:58,472 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 42 transitions. [2020-09-04 13:20:58,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-04 13:20:58,474 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:20:58,474 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:20:58,677 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-04 13:20:58,678 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:20:58,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:20:58,679 INFO L82 PathProgramCache]: Analyzing trace with hash 709659056, now seen corresponding path program 1 times [2020-09-04 13:20:58,680 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:20:58,680 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830986798] [2020-09-04 13:20:58,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:20:58,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:20:58,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:20:58,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:20:58,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-04 13:20:58,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:20:58,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 13:20:58,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:20:58,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 13:20:58,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:20:58,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 13:20:58,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:20:58,998 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-09-04 13:20:58,999 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830986798] [2020-09-04 13:20:58,999 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [635513301] [2020-09-04 13:20:58,999 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 13:20:59,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:20:59,045 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 19 conjunts are in the unsatisfiable core [2020-09-04 13:20:59,048 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-04 13:20:59,114 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-09-04 13:20:59,115 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-04 13:20:59,115 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2020-09-04 13:20:59,116 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196705849] [2020-09-04 13:20:59,116 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-04 13:20:59,117 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:20:59,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-04 13:20:59,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2020-09-04 13:20:59,118 INFO L87 Difference]: Start difference. First operand 38 states and 42 transitions. Second operand 12 states. [2020-09-04 13:20:59,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:20:59,246 INFO L93 Difference]: Finished difference Result 70 states and 78 transitions. [2020-09-04 13:20:59,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-04 13:20:59,248 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 34 [2020-09-04 13:20:59,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:20:59,249 INFO L225 Difference]: With dead ends: 70 [2020-09-04 13:20:59,250 INFO L226 Difference]: Without dead ends: 52 [2020-09-04 13:20:59,251 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 44 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2020-09-04 13:20:59,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-09-04 13:20:59,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 46. [2020-09-04 13:20:59,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-09-04 13:20:59,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 50 transitions. [2020-09-04 13:20:59,260 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 50 transitions. Word has length 34 [2020-09-04 13:20:59,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:20:59,260 INFO L479 AbstractCegarLoop]: Abstraction has 46 states and 50 transitions. [2020-09-04 13:20:59,261 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-04 13:20:59,261 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 50 transitions. [2020-09-04 13:20:59,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-09-04 13:20:59,262 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:20:59,263 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:20:59,478 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-04 13:20:59,479 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:20:59,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:20:59,480 INFO L82 PathProgramCache]: Analyzing trace with hash -797786941, now seen corresponding path program 2 times [2020-09-04 13:20:59,481 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:20:59,481 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869456360] [2020-09-04 13:20:59,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:20:59,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:20:59,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:20:59,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:20:59,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-04 13:20:59,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:20:59,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 13:20:59,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:20:59,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 13:20:59,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:20:59,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 13:20:59,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:20:59,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 13:20:59,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:20:59,812 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-04 13:20:59,813 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869456360] [2020-09-04 13:20:59,813 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1080926697] [2020-09-04 13:20:59,814 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 13:20:59,862 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-09-04 13:20:59,863 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-04 13:20:59,864 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 32 conjunts are in the unsatisfiable core [2020-09-04 13:20:59,875 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-04 13:21:00,077 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-04 13:21:00,078 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-04 13:21:00,078 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 17] total 18 [2020-09-04 13:21:00,079 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693025246] [2020-09-04 13:21:00,079 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-09-04 13:21:00,080 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:21:00,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-09-04 13:21:00,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2020-09-04 13:21:00,081 INFO L87 Difference]: Start difference. First operand 46 states and 50 transitions. Second operand 18 states. [2020-09-04 13:21:00,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:21:00,283 INFO L93 Difference]: Finished difference Result 58 states and 63 transitions. [2020-09-04 13:21:00,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-04 13:21:00,284 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 41 [2020-09-04 13:21:00,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:21:00,285 INFO L225 Difference]: With dead ends: 58 [2020-09-04 13:21:00,285 INFO L226 Difference]: Without dead ends: 0 [2020-09-04 13:21:00,286 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 48 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=42, Invalid=338, Unknown=0, NotChecked=0, Total=380 [2020-09-04 13:21:00,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-04 13:21:00,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-04 13:21:00,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-04 13:21:00,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-04 13:21:00,288 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 41 [2020-09-04 13:21:00,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:21:00,288 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-04 13:21:00,288 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-09-04 13:21:00,288 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-04 13:21:00,288 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-04 13:21:00,498 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-04 13:21:00,502 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-04 13:21:00,529 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-09-04 13:21:00,530 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-04 13:21:00,530 INFO L268 CegarLoopResult]: For program point L17(line 17) no Hoare annotation was computed. [2020-09-04 13:21:00,530 INFO L271 CegarLoopResult]: At program point L16(line 16) the Hoare annotation is: true [2020-09-04 13:21:00,530 INFO L268 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-09-04 13:21:00,530 INFO L268 CegarLoopResult]: For program point L16-1(line 16) no Hoare annotation was computed. [2020-09-04 13:21:00,531 INFO L268 CegarLoopResult]: For program point id2EXIT(lines 14 19) no Hoare annotation was computed. [2020-09-04 13:21:00,531 INFO L271 CegarLoopResult]: At program point id2ENTRY(lines 14 19) the Hoare annotation is: true [2020-09-04 13:21:00,531 INFO L268 CegarLoopResult]: For program point id2FINAL(lines 14 19) no Hoare annotation was computed. [2020-09-04 13:21:00,531 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-04 13:21:00,531 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-04 13:21:00,532 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-04 13:21:00,532 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-04 13:21:00,532 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 25) no Hoare annotation was computed. [2020-09-04 13:21:00,532 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 21 27) the Hoare annotation is: true [2020-09-04 13:21:00,532 INFO L268 CegarLoopResult]: For program point L25(line 25) no Hoare annotation was computed. [2020-09-04 13:21:00,533 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 21 27) no Hoare annotation was computed. [2020-09-04 13:21:00,533 INFO L268 CegarLoopResult]: For program point L24(lines 24 26) no Hoare annotation was computed. [2020-09-04 13:21:00,533 INFO L271 CegarLoopResult]: At program point L23(line 23) the Hoare annotation is: true [2020-09-04 13:21:00,533 INFO L268 CegarLoopResult]: For program point L23-1(line 23) no Hoare annotation was computed. [2020-09-04 13:21:00,533 INFO L268 CegarLoopResult]: For program point L24-2(lines 21 27) no Hoare annotation was computed. [2020-09-04 13:21:00,533 INFO L268 CegarLoopResult]: For program point idFINAL(lines 7 12) no Hoare annotation was computed. [2020-09-04 13:21:00,534 INFO L268 CegarLoopResult]: For program point idEXIT(lines 7 12) no Hoare annotation was computed. [2020-09-04 13:21:00,534 INFO L268 CegarLoopResult]: For program point L10(line 10) no Hoare annotation was computed. [2020-09-04 13:21:00,534 INFO L271 CegarLoopResult]: At program point L9(line 9) the Hoare annotation is: true [2020-09-04 13:21:00,534 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-09-04 13:21:00,534 INFO L268 CegarLoopResult]: For program point L9-1(line 9) no Hoare annotation was computed. [2020-09-04 13:21:00,535 INFO L271 CegarLoopResult]: At program point idENTRY(lines 7 12) the Hoare annotation is: true [2020-09-04 13:21:00,543 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 01:21:00 BoogieIcfgContainer [2020-09-04 13:21:00,543 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 13:21:00,547 INFO L168 Benchmark]: Toolchain (without parser) took 5411.13 ms. Allocated memory was 138.4 MB in the beginning and 246.9 MB in the end (delta: 108.5 MB). Free memory was 101.8 MB in the beginning and 138.9 MB in the end (delta: -37.1 MB). Peak memory consumption was 71.4 MB. Max. memory is 7.1 GB. [2020-09-04 13:21:00,548 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 138.4 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-04 13:21:00,549 INFO L168 Benchmark]: CACSL2BoogieTranslator took 445.45 ms. Allocated memory is still 138.4 MB. Free memory was 101.6 MB in the beginning and 91.9 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. [2020-09-04 13:21:00,550 INFO L168 Benchmark]: Boogie Preprocessor took 185.65 ms. Allocated memory was 138.4 MB in the beginning and 203.4 MB in the end (delta: 65.0 MB). Free memory was 91.9 MB in the beginning and 182.1 MB in the end (delta: -90.1 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. [2020-09-04 13:21:00,551 INFO L168 Benchmark]: RCFGBuilder took 348.91 ms. Allocated memory is still 203.4 MB. Free memory was 181.4 MB in the beginning and 168.6 MB in the end (delta: 12.8 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. [2020-09-04 13:21:00,552 INFO L168 Benchmark]: TraceAbstraction took 4421.97 ms. Allocated memory was 203.4 MB in the beginning and 246.9 MB in the end (delta: 43.5 MB). Free memory was 168.6 MB in the beginning and 138.9 MB in the end (delta: 29.7 MB). Peak memory consumption was 73.2 MB. Max. memory is 7.1 GB. [2020-09-04 13:21:00,555 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 138.4 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 445.45 ms. Allocated memory is still 138.4 MB. Free memory was 101.6 MB in the beginning and 91.9 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 185.65 ms. Allocated memory was 138.4 MB in the beginning and 203.4 MB in the end (delta: 65.0 MB). Free memory was 91.9 MB in the beginning and 182.1 MB in the end (delta: -90.1 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 348.91 ms. Allocated memory is still 203.4 MB. Free memory was 181.4 MB in the beginning and 168.6 MB in the end (delta: 12.8 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4421.97 ms. Allocated memory was 203.4 MB in the beginning and 246.9 MB in the end (delta: 43.5 MB). Free memory was 168.6 MB in the beginning and 138.9 MB in the end (delta: 29.7 MB). Peak memory consumption was 73.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 25]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 28 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.2s, OverallIterations: 7, TraceHistogramMax: 3, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 206 SDtfs, 26 SDslu, 1296 SDs, 0 SdLazy, 295 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 220 GetRequests, 159 SyntacticMatches, 3 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=46occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 20 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 11 PreInvPairs, 11 NumberOfFragments, 9 HoareAnnotationTreeSize, 11 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 284 NumberOfCodeBlocks, 284 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 274 ConstructedInterpolants, 0 QuantifiedInterpolants, 27230 SizeOfPredicates, 11 NumberOfNonLiveVariables, 225 ConjunctsInSsa, 70 ConjunctsInUnsatCore, 10 InterpolantComputations, 4 PerfectInterpolantSequences, 50/78 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...