/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/Ackermann04.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 13:01:19,489 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 13:01:19,493 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 13:01:19,539 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 13:01:19,540 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 13:01:19,552 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 13:01:19,555 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 13:01:19,559 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 13:01:19,564 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 13:01:19,566 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 13:01:19,567 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 13:01:19,568 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 13:01:19,568 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 13:01:19,571 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 13:01:19,575 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 13:01:19,576 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 13:01:19,578 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 13:01:19,580 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 13:01:19,582 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 13:01:19,589 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 13:01:19,592 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 13:01:19,595 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 13:01:19,597 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 13:01:19,599 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 13:01:19,605 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-04 13:01:19,617 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 13:01:19,618 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 13:01:19,619 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 13:01:19,620 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 13:01:19,647 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 13:01:19,647 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 13:01:19,649 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-04 13:01:19,649 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-04 13:01:19,649 INFO L138 SettingsManager]: * Use SBE=true [2020-09-04 13:01:19,649 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 13:01:19,650 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 13:01:19,650 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 13:01:19,650 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 13:01:19,650 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 13:01:19,650 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 13:01:19,651 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 13:01:19,651 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 13:01:19,651 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 13:01:19,651 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 13:01:19,651 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 13:01:19,652 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 13:01:19,652 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 13:01:19,652 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-04 13:01:19,652 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 13:01:19,652 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 13:01:19,653 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 13:01:19,653 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 13:01:19,653 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-04 13:01:19,653 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-04 13:01:19,653 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-04 13:01:19,654 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-04 13:01:19,654 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 13:01:19,654 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-04 13:01:19,654 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-09-04 13:01:20,139 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 13:01:20,160 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 13:01:20,165 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 13:01:20,168 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 13:01:20,168 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 13:01:20,170 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/Ackermann04.c [2020-09-04 13:01:20,261 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8b26e97e3/a739b9b680554148830605cc2d570de6/FLAGbf0c2ad1a [2020-09-04 13:01:20,757 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 13:01:20,758 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive/Ackermann04.c [2020-09-04 13:01:20,766 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8b26e97e3/a739b9b680554148830605cc2d570de6/FLAGbf0c2ad1a [2020-09-04 13:01:21,096 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8b26e97e3/a739b9b680554148830605cc2d570de6 [2020-09-04 13:01:21,108 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 13:01:21,110 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 13:01:21,112 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 13:01:21,112 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 13:01:21,117 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 13:01:21,118 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 01:01:21" (1/1) ... [2020-09-04 13:01:21,122 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f78b0b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:01:21, skipping insertion in model container [2020-09-04 13:01:21,123 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 01:01:21" (1/1) ... [2020-09-04 13:01:21,133 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 13:01:21,159 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 13:01:21,434 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 13:01:21,444 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 13:01:21,467 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 13:01:21,482 INFO L208 MainTranslator]: Completed translation [2020-09-04 13:01:21,483 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:01:21 WrapperNode [2020-09-04 13:01:21,483 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 13:01:21,484 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 13:01:21,484 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 13:01:21,485 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 13:01:21,499 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:01:21" (1/1) ... [2020-09-04 13:01:21,500 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:01:21" (1/1) ... [2020-09-04 13:01:21,506 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:01:21" (1/1) ... [2020-09-04 13:01:21,506 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:01:21" (1/1) ... [2020-09-04 13:01:21,511 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:01:21" (1/1) ... [2020-09-04 13:01:21,514 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:01:21" (1/1) ... [2020-09-04 13:01:21,515 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:01:21" (1/1) ... [2020-09-04 13:01:21,517 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 13:01:21,518 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 13:01:21,518 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 13:01:21,518 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 13:01:21,520 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:01:21" (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 13:01:21,690 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 13:01:21,690 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 13:01:21,691 INFO L138 BoogieDeclarations]: Found implementation of procedure ackermann [2020-09-04 13:01:21,691 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 13:01:21,691 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 13:01:21,691 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-04 13:01:21,691 INFO L130 BoogieDeclarations]: Found specification of procedure ackermann [2020-09-04 13:01:21,691 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 13:01:21,692 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 13:01:21,692 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 13:01:21,921 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 13:01:21,922 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-04 13:01:21,927 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 01:01:21 BoogieIcfgContainer [2020-09-04 13:01:21,927 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 13:01:21,928 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 13:01:21,929 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 13:01:21,933 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 13:01:21,933 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 01:01:21" (1/3) ... [2020-09-04 13:01:21,934 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37f6be5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 01:01:21, skipping insertion in model container [2020-09-04 13:01:21,935 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:01:21" (2/3) ... [2020-09-04 13:01:21,935 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37f6be5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 01:01:21, skipping insertion in model container [2020-09-04 13:01:21,935 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 01:01:21" (3/3) ... [2020-09-04 13:01:21,938 INFO L109 eAbstractionObserver]: Analyzing ICFG Ackermann04.c [2020-09-04 13:01:21,950 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-09-04 13:01:21,961 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 13:01:21,986 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 13:01:22,015 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 13:01:22,015 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 13:01:22,015 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-04 13:01:22,016 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 13:01:22,016 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 13:01:22,016 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 13:01:22,016 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 13:01:22,016 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 13:01:22,037 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2020-09-04 13:01:22,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-04 13:01:22,046 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:01:22,047 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:01:22,047 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:01:22,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:01:22,055 INFO L82 PathProgramCache]: Analyzing trace with hash -1796234678, now seen corresponding path program 1 times [2020-09-04 13:01:22,068 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:01:22,069 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868983962] [2020-09-04 13:01:22,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:01:22,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:01:22,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:01:22,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:01:22,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-04 13:01:22,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:01:22,415 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 13:01:22,417 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868983962] [2020-09-04 13:01:22,418 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 13:01:22,419 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-04 13:01:22,429 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607847588] [2020-09-04 13:01:22,446 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-04 13:01:22,447 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:01:22,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-04 13:01:22,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-04 13:01:22,474 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 5 states. [2020-09-04 13:01:22,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:01:22,646 INFO L93 Difference]: Finished difference Result 55 states and 77 transitions. [2020-09-04 13:01:22,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-04 13:01:22,648 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-09-04 13:01:22,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:01:22,664 INFO L225 Difference]: With dead ends: 55 [2020-09-04 13:01:22,664 INFO L226 Difference]: Without dead ends: 28 [2020-09-04 13:01:22,670 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-04 13:01:22,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-09-04 13:01:22,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-09-04 13:01:22,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-04 13:01:22,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 35 transitions. [2020-09-04 13:01:22,725 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 35 transitions. Word has length 15 [2020-09-04 13:01:22,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:01:22,726 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 35 transitions. [2020-09-04 13:01:22,726 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-04 13:01:22,727 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 35 transitions. [2020-09-04 13:01:22,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-09-04 13:01:22,730 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:01:22,730 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] [2020-09-04 13:01:22,731 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 13:01:22,731 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:01:22,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:01:22,732 INFO L82 PathProgramCache]: Analyzing trace with hash -895156504, now seen corresponding path program 1 times [2020-09-04 13:01:22,732 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:01:22,732 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533275450] [2020-09-04 13:01:22,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:01:22,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:01:22,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:01:22,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:01:22,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-04 13:01:22,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:01:22,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 13:01:22,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:01:22,913 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 13:01:22,914 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533275450] [2020-09-04 13:01:22,914 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [696231389] [2020-09-04 13:01:22,915 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 13:01:22,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:01:22,985 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 4 conjunts are in the unsatisfiable core [2020-09-04 13:01:23,000 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-04 13:01:23,177 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-04 13:01:23,178 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-04 13:01:23,178 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2020-09-04 13:01:23,180 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079841503] [2020-09-04 13:01:23,181 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-04 13:01:23,181 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:01:23,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-04 13:01:23,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-04 13:01:23,182 INFO L87 Difference]: Start difference. First operand 28 states and 35 transitions. Second operand 9 states. [2020-09-04 13:01:23,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:01:23,649 INFO L93 Difference]: Finished difference Result 69 states and 117 transitions. [2020-09-04 13:01:23,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-04 13:01:23,650 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 22 [2020-09-04 13:01:23,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:01:23,654 INFO L225 Difference]: With dead ends: 69 [2020-09-04 13:01:23,654 INFO L226 Difference]: Without dead ends: 43 [2020-09-04 13:01:23,657 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2020-09-04 13:01:23,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-09-04 13:01:23,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2020-09-04 13:01:23,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-09-04 13:01:23,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 65 transitions. [2020-09-04 13:01:23,672 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 65 transitions. Word has length 22 [2020-09-04 13:01:23,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:01:23,673 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 65 transitions. [2020-09-04 13:01:23,673 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-04 13:01:23,673 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 65 transitions. [2020-09-04 13:01:23,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-09-04 13:01:23,677 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:01:23,677 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 5, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:01:23,893 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-09-04 13:01:23,894 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:01:23,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:01:23,895 INFO L82 PathProgramCache]: Analyzing trace with hash -1732137516, now seen corresponding path program 1 times [2020-09-04 13:01:23,895 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:01:23,896 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640225427] [2020-09-04 13:01:23,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:01:23,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:01:23,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:01:23,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:01:23,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-04 13:01:24,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:01:24,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 13:01:24,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:01:24,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 13:01:24,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:01:24,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 13:01:24,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:01:24,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 13:01:24,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:01:24,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-04 13:01:24,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:01:24,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-04 13:01:24,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:01:24,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 13:01:24,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:01:24,447 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 54 proven. 29 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2020-09-04 13:01:24,447 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640225427] [2020-09-04 13:01:24,448 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [345501179] [2020-09-04 13:01:24,448 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 13:01:24,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:01:24,511 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 6 conjunts are in the unsatisfiable core [2020-09-04 13:01:24,515 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-04 13:01:24,651 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 24 proven. 28 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2020-09-04 13:01:24,651 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-04 13:01:24,651 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 6] total 18 [2020-09-04 13:01:24,652 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246062066] [2020-09-04 13:01:24,652 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-09-04 13:01:24,653 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:01:24,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-09-04 13:01:24,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2020-09-04 13:01:24,654 INFO L87 Difference]: Start difference. First operand 43 states and 65 transitions. Second operand 18 states. [2020-09-04 13:01:26,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:01:26,414 INFO L93 Difference]: Finished difference Result 236 states and 754 transitions. [2020-09-04 13:01:26,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-09-04 13:01:26,415 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 62 [2020-09-04 13:01:26,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:01:26,432 INFO L225 Difference]: With dead ends: 236 [2020-09-04 13:01:26,433 INFO L226 Difference]: Without dead ends: 179 [2020-09-04 13:01:26,441 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 553 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=527, Invalid=2125, Unknown=0, NotChecked=0, Total=2652 [2020-09-04 13:01:26,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2020-09-04 13:01:26,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 135. [2020-09-04 13:01:26,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2020-09-04 13:01:26,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 306 transitions. [2020-09-04 13:01:26,512 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 306 transitions. Word has length 62 [2020-09-04 13:01:26,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:01:26,514 INFO L479 AbstractCegarLoop]: Abstraction has 135 states and 306 transitions. [2020-09-04 13:01:26,514 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-09-04 13:01:26,514 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 306 transitions. [2020-09-04 13:01:26,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-09-04 13:01:26,535 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:01:26,535 INFO L422 BasicCegarLoop]: trace histogram [22, 22, 14, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:01:26,736 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-04 13:01:26,736 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:01:26,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:01:26,737 INFO L82 PathProgramCache]: Analyzing trace with hash 658170795, now seen corresponding path program 2 times [2020-09-04 13:01:26,737 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:01:26,737 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576567455] [2020-09-04 13:01:26,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:01:26,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:01:26,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:01:26,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:01:26,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-04 13:01:26,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:01:26,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 13:01:26,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:01:26,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 13:01:26,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:01:26,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 13:01:26,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:01:26,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 13:01:26,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:01:26,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 13:01:26,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:01:26,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-04 13:01:26,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:01:26,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 13:01:26,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:01:26,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-04 13:01:26,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:01:26,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 13:01:26,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:01:27,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-09-04 13:01:27,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:01:27,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 13:01:27,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:01:27,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 13:01:27,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:01:27,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-04 13:01:27,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:01:27,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 13:01:27,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:01:27,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-09-04 13:01:27,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:01:27,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 13:01:27,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:01:27,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 13:01:27,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:01:27,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-04 13:01:27,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:01:27,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 13:01:27,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:01:27,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 13:01:27,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:01:27,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-04 13:01:27,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:01:27,222 INFO L134 CoverageAnalysis]: Checked inductivity of 1141 backedges. 166 proven. 90 refuted. 0 times theorem prover too weak. 885 trivial. 0 not checked. [2020-09-04 13:01:27,223 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576567455] [2020-09-04 13:01:27,223 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1645951022] [2020-09-04 13:01:27,223 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 13:01:27,334 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-09-04 13:01:27,334 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-04 13:01:27,337 INFO L263 TraceCheckSpWp]: Trace formula consists of 453 conjuncts, 15 conjunts are in the unsatisfiable core [2020-09-04 13:01:27,365 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-04 13:01:27,554 INFO L134 CoverageAnalysis]: Checked inductivity of 1141 backedges. 580 proven. 29 refuted. 0 times theorem prover too weak. 532 trivial. 0 not checked. [2020-09-04 13:01:27,555 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-04 13:01:27,555 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9] total 12 [2020-09-04 13:01:27,555 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864585001] [2020-09-04 13:01:27,556 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-04 13:01:27,556 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:01:27,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-04 13:01:27,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2020-09-04 13:01:27,557 INFO L87 Difference]: Start difference. First operand 135 states and 306 transitions. Second operand 12 states. [2020-09-04 13:01:27,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:01:27,856 INFO L93 Difference]: Finished difference Result 211 states and 519 transitions. [2020-09-04 13:01:27,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-04 13:01:27,858 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 155 [2020-09-04 13:01:27,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:01:27,861 INFO L225 Difference]: With dead ends: 211 [2020-09-04 13:01:27,862 INFO L226 Difference]: Without dead ends: 80 [2020-09-04 13:01:27,865 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2020-09-04 13:01:27,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-09-04 13:01:27,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 77. [2020-09-04 13:01:27,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-09-04 13:01:27,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 115 transitions. [2020-09-04 13:01:27,879 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 115 transitions. Word has length 155 [2020-09-04 13:01:27,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:01:27,880 INFO L479 AbstractCegarLoop]: Abstraction has 77 states and 115 transitions. [2020-09-04 13:01:27,880 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-04 13:01:27,880 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 115 transitions. [2020-09-04 13:01:27,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2020-09-04 13:01:27,883 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:01:27,883 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 16, 11, 10, 10, 10, 10, 10, 10, 10, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:01:28,097 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-04 13:01:28,097 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:01:28,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:01:28,099 INFO L82 PathProgramCache]: Analyzing trace with hash -3938454, now seen corresponding path program 3 times [2020-09-04 13:01:28,100 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:01:28,100 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188702956] [2020-09-04 13:01:28,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:01:28,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:01:28,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:01:28,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:01:28,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-04 13:01:28,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:01:28,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 13:01:28,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:01:28,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 13:01:28,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:01:28,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 13:01:28,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:01:28,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 13:01:28,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:01:28,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 13:01:28,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:01:28,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-04 13:01:28,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:01:28,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-04 13:01:28,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:01:28,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 13:01:28,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:01:28,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 13:01:28,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:01:28,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 13:01:28,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:01:28,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-04 13:01:28,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:01:28,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-09-04 13:01:28,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:01:28,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-09-04 13:01:28,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:01:28,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 13:01:28,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:01:28,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 13:01:28,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:01:28,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 13:01:28,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:01:28,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 13:01:28,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:01:28,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 13:01:28,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:01:28,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-04 13:01:28,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:01:28,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-04 13:01:28,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:01:28,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 13:01:28,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:01:28,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 13:01:28,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:01:28,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 13:01:28,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:01:28,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-04 13:01:28,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:01:28,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-09-04 13:01:28,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:01:28,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-09-04 13:01:28,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:01:28,932 INFO L134 CoverageAnalysis]: Checked inductivity of 1734 backedges. 172 proven. 544 refuted. 0 times theorem prover too weak. 1018 trivial. 0 not checked. [2020-09-04 13:01:28,932 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188702956] [2020-09-04 13:01:28,933 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [279979997] [2020-09-04 13:01:28,933 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 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 13:01:29,047 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2020-09-04 13:01:29,047 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-04 13:01:29,049 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 21 conjunts are in the unsatisfiable core [2020-09-04 13:01:29,062 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-04 13:01:29,265 INFO L134 CoverageAnalysis]: Checked inductivity of 1734 backedges. 697 proven. 114 refuted. 0 times theorem prover too weak. 923 trivial. 0 not checked. [2020-09-04 13:01:29,265 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-04 13:01:29,266 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 14] total 18 [2020-09-04 13:01:29,266 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854010677] [2020-09-04 13:01:29,268 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-09-04 13:01:29,268 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:01:29,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-09-04 13:01:29,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2020-09-04 13:01:29,270 INFO L87 Difference]: Start difference. First operand 77 states and 115 transitions. Second operand 18 states. [2020-09-04 13:01:30,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:01:30,118 INFO L93 Difference]: Finished difference Result 171 states and 320 transitions. [2020-09-04 13:01:30,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-09-04 13:01:30,119 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 187 [2020-09-04 13:01:30,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:01:30,122 INFO L225 Difference]: With dead ends: 171 [2020-09-04 13:01:30,122 INFO L226 Difference]: Without dead ends: 99 [2020-09-04 13:01:30,124 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 243 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 364 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=360, Invalid=1446, Unknown=0, NotChecked=0, Total=1806 [2020-09-04 13:01:30,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-09-04 13:01:30,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 89. [2020-09-04 13:01:30,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-09-04 13:01:30,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 138 transitions. [2020-09-04 13:01:30,142 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 138 transitions. Word has length 187 [2020-09-04 13:01:30,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:01:30,143 INFO L479 AbstractCegarLoop]: Abstraction has 89 states and 138 transitions. [2020-09-04 13:01:30,143 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-09-04 13:01:30,143 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 138 transitions. [2020-09-04 13:01:30,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-09-04 13:01:30,146 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:01:30,146 INFO L422 BasicCegarLoop]: trace histogram [23, 23, 13, 10, 9, 9, 9, 9, 9, 9, 9, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:01:30,362 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-04 13:01:30,363 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:01:30,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:01:30,364 INFO L82 PathProgramCache]: Analyzing trace with hash -1434361927, now seen corresponding path program 4 times [2020-09-04 13:01:30,364 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:01:30,365 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822430307] [2020-09-04 13:01:30,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:01:30,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:01:30,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:01:30,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:01:30,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-04 13:01:30,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:01:30,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 13:01:30,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:01:30,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 13:01:30,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:01:30,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 13:01:30,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:01:30,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 13:01:30,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:01:30,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 13:01:30,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:01:30,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-04 13:01:30,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:01:30,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-04 13:01:30,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:01:30,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 13:01:30,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:01:30,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 13:01:30,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:01:30,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 13:01:30,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:01:30,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 13:01:30,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:01:30,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-04 13:01:30,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:01:30,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-09-04 13:01:30,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:01:30,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-09-04 13:01:30,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:01:30,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-09-04 13:01:30,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:01:30,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 13:01:30,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:01:30,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 13:01:30,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:01:31,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 13:01:31,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:01:31,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 13:01:31,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:01:31,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-04 13:01:31,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:01:31,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-09-04 13:01:31,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:01:31,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-09-04 13:01:31,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:01:31,102 INFO L134 CoverageAnalysis]: Checked inductivity of 1246 backedges. 446 proven. 274 refuted. 0 times theorem prover too weak. 526 trivial. 0 not checked. [2020-09-04 13:01:31,102 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822430307] [2020-09-04 13:01:31,103 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1108608811] [2020-09-04 13:01:31,103 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST 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 13:01:31,192 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-09-04 13:01:31,193 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-04 13:01:31,195 INFO L263 TraceCheckSpWp]: Trace formula consists of 469 conjuncts, 35 conjunts are in the unsatisfiable core [2020-09-04 13:01:31,199 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-04 13:01:31,417 INFO L134 CoverageAnalysis]: Checked inductivity of 1246 backedges. 421 proven. 286 refuted. 0 times theorem prover too weak. 539 trivial. 0 not checked. [2020-09-04 13:01:31,417 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-04 13:01:31,417 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 20] total 24 [2020-09-04 13:01:31,418 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180141603] [2020-09-04 13:01:31,419 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-09-04 13:01:31,420 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:01:31,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-09-04 13:01:31,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=473, Unknown=0, NotChecked=0, Total=552 [2020-09-04 13:01:31,421 INFO L87 Difference]: Start difference. First operand 89 states and 138 transitions. Second operand 24 states. [2020-09-04 13:01:33,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:01:33,423 INFO L93 Difference]: Finished difference Result 223 states and 443 transitions. [2020-09-04 13:01:33,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2020-09-04 13:01:33,427 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 160 [2020-09-04 13:01:33,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:01:33,432 INFO L225 Difference]: With dead ends: 223 [2020-09-04 13:01:33,432 INFO L226 Difference]: Without dead ends: 142 [2020-09-04 13:01:33,437 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1114 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=784, Invalid=3908, Unknown=0, NotChecked=0, Total=4692 [2020-09-04 13:01:33,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2020-09-04 13:01:33,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 104. [2020-09-04 13:01:33,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-09-04 13:01:33,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 174 transitions. [2020-09-04 13:01:33,486 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 174 transitions. Word has length 160 [2020-09-04 13:01:33,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:01:33,487 INFO L479 AbstractCegarLoop]: Abstraction has 104 states and 174 transitions. [2020-09-04 13:01:33,487 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-09-04 13:01:33,487 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 174 transitions. [2020-09-04 13:01:33,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-09-04 13:01:33,493 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:01:33,493 INFO L422 BasicCegarLoop]: trace histogram [25, 25, 14, 11, 10, 10, 10, 10, 10, 10, 10, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:01:33,705 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2020-09-04 13:01:33,706 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:01:33,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:01:33,706 INFO L82 PathProgramCache]: Analyzing trace with hash -66876812, now seen corresponding path program 5 times [2020-09-04 13:01:33,707 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:01:33,707 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103834330] [2020-09-04 13:01:33,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:01:33,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:01:33,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:01:33,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:01:33,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-04 13:01:33,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:01:33,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 13:01:33,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:01:33,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 13:01:33,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:01:33,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 13:01:33,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:01:34,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 13:01:34,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:01:34,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 13:01:34,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:01:34,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-04 13:01:34,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:01:34,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-04 13:01:34,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:01:34,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 13:01:34,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:01:34,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 13:01:34,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:01:34,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 13:01:34,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:01:34,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 13:01:34,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:01:34,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-04 13:01:34,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:01:34,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-09-04 13:01:34,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:01:34,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-09-04 13:01:34,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:01:34,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-09-04 13:01:34,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:01:34,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 13:01:34,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:01:34,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 13:01:34,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:01:34,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 13:01:34,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:01:34,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 13:01:34,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:01:34,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 13:01:34,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:01:34,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-04 13:01:34,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:01:34,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-09-04 13:01:34,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:01:34,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-09-04 13:01:34,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:01:34,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-09-04 13:01:34,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:01:34,604 INFO L134 CoverageAnalysis]: Checked inductivity of 1483 backedges. 503 proven. 360 refuted. 0 times theorem prover too weak. 620 trivial. 0 not checked. [2020-09-04 13:01:34,604 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103834330] [2020-09-04 13:01:34,605 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2018165154] [2020-09-04 13:01:34,605 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-04 13:01:34,701 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) [2020-09-04 13:01:34,701 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-04 13:01:34,703 INFO L263 TraceCheckSpWp]: Trace formula consists of 436 conjuncts, 37 conjunts are in the unsatisfiable core [2020-09-04 13:01:34,708 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-04 13:01:34,833 INFO L134 CoverageAnalysis]: Checked inductivity of 1483 backedges. 477 proven. 372 refuted. 0 times theorem prover too weak. 634 trivial. 0 not checked. [2020-09-04 13:01:34,834 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-04 13:01:34,834 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 21] total 25 [2020-09-04 13:01:34,835 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429418015] [2020-09-04 13:01:34,836 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-09-04 13:01:34,836 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:01:34,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-09-04 13:01:34,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=514, Unknown=0, NotChecked=0, Total=600 [2020-09-04 13:01:34,837 INFO L87 Difference]: Start difference. First operand 104 states and 174 transitions. Second operand 25 states. [2020-09-04 13:01:37,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:01:37,170 INFO L93 Difference]: Finished difference Result 254 states and 545 transitions. [2020-09-04 13:01:37,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2020-09-04 13:01:37,176 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 173 [2020-09-04 13:01:37,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:01:37,180 INFO L225 Difference]: With dead ends: 254 [2020-09-04 13:01:37,181 INFO L226 Difference]: Without dead ends: 158 [2020-09-04 13:01:37,186 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 227 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1368 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=929, Invalid=4621, Unknown=0, NotChecked=0, Total=5550 [2020-09-04 13:01:37,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-09-04 13:01:37,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 124. [2020-09-04 13:01:37,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-09-04 13:01:37,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 223 transitions. [2020-09-04 13:01:37,206 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 223 transitions. Word has length 173 [2020-09-04 13:01:37,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:01:37,206 INFO L479 AbstractCegarLoop]: Abstraction has 124 states and 223 transitions. [2020-09-04 13:01:37,206 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-09-04 13:01:37,207 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 223 transitions. [2020-09-04 13:01:37,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2020-09-04 13:01:37,211 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:01:37,211 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 15, 12, 11, 11, 11, 11, 11, 11, 11, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:01:37,425 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-04 13:01:37,425 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:01:37,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:01:37,426 INFO L82 PathProgramCache]: Analyzing trace with hash -1028004289, now seen corresponding path program 6 times [2020-09-04 13:01:37,426 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:01:37,426 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423697536] [2020-09-04 13:01:37,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:01:37,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:01:37,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:01:37,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:01:37,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-04 13:01:37,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:01:37,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 13:01:37,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:01:37,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 13:01:37,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:01:37,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 13:01:37,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:01:37,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 13:01:37,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:01:37,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 13:01:37,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:01:37,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-04 13:01:37,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:01:37,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-04 13:01:37,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:01:37,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 13:01:37,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:01:37,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 13:01:37,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:01:37,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 13:01:37,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:01:37,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 13:01:37,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:01:37,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-04 13:01:37,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:01:37,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-09-04 13:01:37,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:01:37,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-09-04 13:01:37,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:01:37,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-09-04 13:01:37,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:01:37,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 13:01:37,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:01:37,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 13:01:37,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:01:37,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 13:01:37,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:01:37,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 13:01:38,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:01:38,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 13:01:38,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:01:38,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 13:01:38,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:01:38,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-04 13:01:38,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:01:38,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-09-04 13:01:38,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:01:38,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-09-04 13:01:38,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:01:38,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-09-04 13:01:38,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:01:38,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-09-04 13:01:38,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:01:38,389 INFO L134 CoverageAnalysis]: Checked inductivity of 1741 backedges. 686 proven. 70 refuted. 0 times theorem prover too weak. 985 trivial. 0 not checked. [2020-09-04 13:01:38,390 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423697536] [2020-09-04 13:01:38,390 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [13992730] [2020-09-04 13:01:38,390 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-04 13:01:38,546 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 18 check-sat command(s) [2020-09-04 13:01:38,546 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-04 13:01:38,550 INFO L263 TraceCheckSpWp]: Trace formula consists of 545 conjuncts, 40 conjunts are in the unsatisfiable core [2020-09-04 13:01:38,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-04 13:01:38,674 INFO L134 CoverageAnalysis]: Checked inductivity of 1741 backedges. 657 proven. 84 refuted. 0 times theorem prover too weak. 1000 trivial. 0 not checked. [2020-09-04 13:01:38,675 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-04 13:01:38,675 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 23] total 26 [2020-09-04 13:01:38,676 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685896019] [2020-09-04 13:01:38,676 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-09-04 13:01:38,677 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:01:38,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-09-04 13:01:38,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=557, Unknown=0, NotChecked=0, Total=650 [2020-09-04 13:01:38,678 INFO L87 Difference]: Start difference. First operand 124 states and 223 transitions. Second operand 26 states. [2020-09-04 13:01:40,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:01:40,535 INFO L93 Difference]: Finished difference Result 219 states and 406 transitions. [2020-09-04 13:01:40,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2020-09-04 13:01:40,535 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 186 [2020-09-04 13:01:40,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:01:40,536 INFO L225 Difference]: With dead ends: 219 [2020-09-04 13:01:40,536 INFO L226 Difference]: Without dead ends: 0 [2020-09-04 13:01:40,543 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 313 GetRequests, 246 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 827 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=915, Invalid=3777, Unknown=0, NotChecked=0, Total=4692 [2020-09-04 13:01:40,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-04 13:01:40,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-04 13:01:40,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-04 13:01:40,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-04 13:01:40,544 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 186 [2020-09-04 13:01:40,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:01:40,544 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-04 13:01:40,545 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-09-04 13:01:40,545 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-04 13:01:40,545 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-04 13:01:40,759 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-04 13:01:40,763 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-04 13:01:41,203 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 71 [2020-09-04 13:01:41,406 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 71 [2020-09-04 13:01:41,555 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 61 [2020-09-04 13:01:41,737 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 69 [2020-09-04 13:01:41,880 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 69 [2020-09-04 13:01:42,050 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 68 [2020-09-04 13:01:42,211 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 68 [2020-09-04 13:01:42,329 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 53 [2020-09-04 13:01:42,525 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 71 [2020-09-04 13:01:42,680 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 68 [2020-09-04 13:01:42,819 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 68 [2020-09-04 13:01:42,954 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 64 [2020-09-04 13:01:43,098 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 64 [2020-09-04 13:01:43,259 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 68 [2020-09-04 13:01:43,420 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 68 [2020-09-04 13:01:43,588 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 64 [2020-09-04 13:01:43,791 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 71 [2020-09-04 13:01:43,947 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 71 [2020-09-04 13:01:44,101 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 68 [2020-09-04 13:01:44,335 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 71 [2020-09-04 13:01:44,490 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 71 [2020-09-04 13:01:44,649 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 71 [2020-09-04 13:01:44,816 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 71 [2020-09-04 13:01:44,959 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 68 [2020-09-04 13:01:45,142 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 68 [2020-09-04 13:01:45,298 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 68 [2020-09-04 13:01:45,551 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 71 [2020-09-04 13:01:45,760 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 71 [2020-09-04 13:01:45,928 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 71 [2020-09-04 13:01:46,101 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 71 [2020-09-04 13:01:46,302 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 68 [2020-09-04 13:01:46,457 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 68 [2020-09-04 13:01:46,613 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 71 [2020-09-04 13:01:46,768 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 71 [2020-09-04 13:01:46,993 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 66 [2020-09-04 13:01:47,194 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 72 [2020-09-04 13:01:49,432 WARN L193 SmtUtils]: Spent 1.65 s on a formula simplification. DAG size of input: 161 DAG size of output: 39 [2020-09-04 13:01:49,560 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 11 [2020-09-04 13:01:49,575 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-09-04 13:01:49,575 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-04 13:01:49,575 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-04 13:01:49,575 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-04 13:01:49,576 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-04 13:01:49,576 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-04 13:01:49,576 INFO L268 CegarLoopResult]: For program point ackermannEXIT(lines 14 22) no Hoare annotation was computed. [2020-09-04 13:01:49,576 INFO L271 CegarLoopResult]: At program point ackermannENTRY(lines 14 22) the Hoare annotation is: true [2020-09-04 13:01:49,576 INFO L264 CegarLoopResult]: At program point L21(line 21) the Hoare annotation is: (and (not (= ackermann_~m 0)) (= ackermann_~n |ackermann_#in~n|) (= ackermann_~m |ackermann_#in~m|)) [2020-09-04 13:01:49,576 INFO L268 CegarLoopResult]: For program point L21-1(line 21) no Hoare annotation was computed. [2020-09-04 13:01:49,577 INFO L264 CegarLoopResult]: At program point L19(line 19) the Hoare annotation is: (and (= |ackermann_#in~n| 0) (not (= ackermann_~m 0)) (= ackermann_~n |ackermann_#in~n|) (= ackermann_~m |ackermann_#in~m|)) [2020-09-04 13:01:49,577 INFO L264 CegarLoopResult]: At program point L21-2(line 21) the Hoare annotation is: (let ((.cse1 (<= 3 |ackermann_#t~ret1|)) (.cse3 (<= 6 |ackermann_#t~ret1|)) (.cse2 (<= |ackermann_#in~n| 2)) (.cse0 (<= 5 |ackermann_#t~ret1|))) (and (<= 2 |ackermann_#t~ret1|) (not (= ackermann_~m 0)) (not (<= |ackermann_#in~n| 0)) (or (and .cse0 (<= |ackermann_#in~n| 4)) (= |ackermann_#in~n| 1) (and (<= |ackermann_#in~n| 3) (<= 4 |ackermann_#t~ret1|)) (and .cse1 .cse2) .cse3) (= ackermann_~n |ackermann_#in~n|) (= ackermann_~m |ackermann_#in~m|) (or (and (<= |ackermann_#in~n| 1) .cse1) (<= |ackermann_#in~m| 1) .cse3 (and .cse2 .cse0)))) [2020-09-04 13:01:49,577 INFO L268 CegarLoopResult]: For program point L18(lines 18 20) no Hoare annotation was computed. [2020-09-04 13:01:49,577 INFO L268 CegarLoopResult]: For program point L19-1(line 19) no Hoare annotation was computed. [2020-09-04 13:01:49,577 INFO L268 CegarLoopResult]: For program point L21-3(line 21) no Hoare annotation was computed. [2020-09-04 13:01:49,577 INFO L268 CegarLoopResult]: For program point L15(lines 15 17) no Hoare annotation was computed. [2020-09-04 13:01:49,578 INFO L268 CegarLoopResult]: For program point ackermannFINAL(lines 14 22) no Hoare annotation was computed. [2020-09-04 13:01:49,578 INFO L268 CegarLoopResult]: For program point L33(lines 33 38) no Hoare annotation was computed. [2020-09-04 13:01:49,578 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 43) no Hoare annotation was computed. [2020-09-04 13:01:49,578 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 25 45) the Hoare annotation is: true [2020-09-04 13:01:49,578 INFO L268 CegarLoopResult]: For program point L27(lines 27 31) no Hoare annotation was computed. [2020-09-04 13:01:49,578 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 25 45) no Hoare annotation was computed. [2020-09-04 13:01:49,579 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 25 45) no Hoare annotation was computed. [2020-09-04 13:01:49,579 INFO L268 CegarLoopResult]: For program point L43(line 43) no Hoare annotation was computed. [2020-09-04 13:01:49,579 INFO L268 CegarLoopResult]: For program point L40(lines 40 44) no Hoare annotation was computed. [2020-09-04 13:01:49,579 INFO L271 CegarLoopResult]: At program point L39(line 39) the Hoare annotation is: true [2020-09-04 13:01:49,579 INFO L268 CegarLoopResult]: For program point L39-1(line 39) no Hoare annotation was computed. [2020-09-04 13:01:49,585 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 01:01:49 BoogieIcfgContainer [2020-09-04 13:01:49,585 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 13:01:49,588 INFO L168 Benchmark]: Toolchain (without parser) took 28477.59 ms. Allocated memory was 144.7 MB in the beginning and 526.4 MB in the end (delta: 381.7 MB). Free memory was 101.2 MB in the beginning and 422.4 MB in the end (delta: -321.2 MB). Peak memory consumption was 376.5 MB. Max. memory is 7.1 GB. [2020-09-04 13:01:49,588 INFO L168 Benchmark]: CDTParser took 0.66 ms. Allocated memory is still 144.7 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-04 13:01:49,592 INFO L168 Benchmark]: CACSL2BoogieTranslator took 372.06 ms. Allocated memory is still 144.7 MB. Free memory was 101.0 MB in the beginning and 91.3 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. [2020-09-04 13:01:49,593 INFO L168 Benchmark]: Boogie Preprocessor took 33.32 ms. Allocated memory is still 144.7 MB. Free memory was 91.3 MB in the beginning and 89.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-09-04 13:01:49,594 INFO L168 Benchmark]: RCFGBuilder took 409.26 ms. Allocated memory was 144.7 MB in the beginning and 200.8 MB in the end (delta: 56.1 MB). Free memory was 89.9 MB in the beginning and 166.9 MB in the end (delta: -77.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. [2020-09-04 13:01:49,602 INFO L168 Benchmark]: TraceAbstraction took 27657.34 ms. Allocated memory was 200.8 MB in the beginning and 526.4 MB in the end (delta: 325.6 MB). Free memory was 166.2 MB in the beginning and 422.4 MB in the end (delta: -256.2 MB). Peak memory consumption was 385.4 MB. Max. memory is 7.1 GB. [2020-09-04 13:01:49,605 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.66 ms. Allocated memory is still 144.7 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 372.06 ms. Allocated memory is still 144.7 MB. Free memory was 101.0 MB in the beginning and 91.3 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 33.32 ms. Allocated memory is still 144.7 MB. Free memory was 91.3 MB in the beginning and 89.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 409.26 ms. Allocated memory was 144.7 MB in the beginning and 200.8 MB in the end (delta: 56.1 MB). Free memory was 89.9 MB in the beginning and 166.9 MB in the end (delta: -77.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 27657.34 ms. Allocated memory was 200.8 MB in the beginning and 526.4 MB in the end (delta: 325.6 MB). Free memory was 166.2 MB in the beginning and 422.4 MB in the end (delta: -256.2 MB). Peak memory consumption was 385.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 43]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 27 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 18.7s, OverallIterations: 8, TraceHistogramMax: 27, AutomataDifference: 9.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 8.8s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 236 SDtfs, 270 SDslu, 1291 SDs, 0 SdLazy, 4104 SolverSat, 1084 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1568 GetRequests, 1236 SyntacticMatches, 0 SemanticMatches, 332 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4251 ImplicationChecksByTransitivity, 6.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=135occurred in iteration=3, 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, 8 MinimizatonAttempts, 129 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 529 PreInvPairs, 1775 NumberOfFragments, 98 HoareAnnotationTreeSize, 529 FomulaSimplifications, 368359 FormulaSimplificationTreeSizeReduction, 6.9s HoareSimplificationTime, 9 FomulaSimplificationsInter, 12531 FormulaSimplificationTreeSizeReductionInter, 1.8s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 5.5s InterpolantComputationTime, 1905 NumberOfCodeBlocks, 1798 NumberOfCodeBlocksAsserted, 58 NumberOfCheckSat, 1890 ConstructedInterpolants, 0 QuantifiedInterpolants, 510418 SizeOfPredicates, 54 NumberOfNonLiveVariables, 2457 ConjunctsInSsa, 158 ConjunctsInUnsatCore, 15 InterpolantComputations, 1 PerfectInterpolantSequences, 12679/14962 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...