/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 --traceabstraction.assert.codeblocks.term.scoring.heuristic NUM_VARIABLES --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 4 --traceabstraction.trace.refinement.strategy CAMEL_SMT_AM -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive-simple/fibo_5-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-79ed534 [2020-07-20 01:25:40,351 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2020-07-20 01:25:40,397 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 01:25:40,398 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 01:25:40,399 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 01:25:40,400 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 01:25:40,400 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 01:25:40,401 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 01:25:40,403 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 01:25:40,405 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 01:25:40,406 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 01:25:40,407 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 01:25:40,408 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 01:25:40,409 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 01:25:40,412 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 01:25:40,424 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 01:25:40,425 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 01:25:40,426 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 01:25:40,428 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-20 01:25:40,449 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 01:25:40,449 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 01:25:40,451 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 01:25:40,452 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 01:25:40,452 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 01:25:40,452 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 01:25:40,452 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 01:25:40,453 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 01:25:40,453 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 01:25:40,453 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 01:25:40,454 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 01:25:40,454 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 01:25:40,454 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 01:25:40,455 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 01:25:40,455 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 01:25:40,455 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 01:25:40,456 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 01:25:40,456 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 01:25:40,456 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 01:25:40,456 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 01:25:40,456 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 01:25:40,457 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 01:25:40,457 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 01:25:40,457 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 01:25:40,457 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 01:25:40,457 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 01:25:40,458 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 01:25:40,458 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 01:25:40,458 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 01:25:40,458 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> NUM_VARIABLES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 4 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> CAMEL_SMT_AM [2020-07-20 01:25:40,785 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 01:25:40,808 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 01:25:40,812 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 01:25:40,816 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 01:25:40,816 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 01:25:40,817 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_5-1.c [2020-07-20 01:25:40,909 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac91f4fe1/06374e02c0c048a983d05ddb13354592/FLAG0010c7f02 [2020-07-20 01:25:41,454 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 01:25:41,455 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive-simple/fibo_5-1.c [2020-07-20 01:25:41,464 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac91f4fe1/06374e02c0c048a983d05ddb13354592/FLAG0010c7f02 [2020-07-20 01:25:41,859 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac91f4fe1/06374e02c0c048a983d05ddb13354592 [2020-07-20 01:25:41,875 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 01:25:41,879 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 01:25:41,882 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 01:25:41,883 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 01:25:41,887 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 01:25:41,889 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 01:25:41" (1/1) ... [2020-07-20 01:25:41,893 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52122597 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:25:41, skipping insertion in model container [2020-07-20 01:25:41,893 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 01:25:41" (1/1) ... [2020-07-20 01:25:41,903 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 01:25:41,928 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 01:25:42,152 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 01:25:42,157 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 01:25:42,178 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 01:25:42,192 INFO L208 MainTranslator]: Completed translation [2020-07-20 01:25:42,193 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:25:42 WrapperNode [2020-07-20 01:25:42,193 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 01:25:42,193 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 01:25:42,194 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 01:25:42,194 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 01:25:42,205 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:25:42" (1/1) ... [2020-07-20 01:25:42,205 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:25:42" (1/1) ... [2020-07-20 01:25:42,210 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:25:42" (1/1) ... [2020-07-20 01:25:42,210 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:25:42" (1/1) ... [2020-07-20 01:25:42,214 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:25:42" (1/1) ... [2020-07-20 01:25:42,217 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:25:42" (1/1) ... [2020-07-20 01:25:42,218 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:25:42" (1/1) ... [2020-07-20 01:25:42,219 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 01:25:42,220 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 01:25:42,220 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 01:25:42,220 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 01:25:42,221 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:25:42" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 01:25:42,373 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 01:25:42,374 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 01:25:42,374 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo [2020-07-20 01:25:42,374 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 01:25:42,374 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 01:25:42,374 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 01:25:42,374 INFO L130 BoogieDeclarations]: Found specification of procedure fibo [2020-07-20 01:25:42,375 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 01:25:42,375 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 01:25:42,375 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 01:25:42,555 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 01:25:42,556 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-20 01:25:42,560 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 01:25:42 BoogieIcfgContainer [2020-07-20 01:25:42,560 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 01:25:42,561 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 01:25:42,562 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 01:25:42,565 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 01:25:42,565 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 01:25:41" (1/3) ... [2020-07-20 01:25:42,566 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72284f83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 01:25:42, skipping insertion in model container [2020-07-20 01:25:42,567 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:25:42" (2/3) ... [2020-07-20 01:25:42,567 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72284f83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 01:25:42, skipping insertion in model container [2020-07-20 01:25:42,567 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 01:25:42" (3/3) ... [2020-07-20 01:25:42,569 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_5-1.c [2020-07-20 01:25:42,581 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-20 01:25:42,590 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 01:25:42,607 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 01:25:42,653 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 01:25:42,653 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 01:25:42,654 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-20 01:25:42,654 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 01:25:42,654 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 01:25:42,654 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 01:25:42,655 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 01:25:42,655 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 01:25:42,681 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2020-07-20 01:25:42,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-07-20 01:25:42,690 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:25:42,691 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 01:25:42,692 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:25:42,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:25:42,701 INFO L82 PathProgramCache]: Analyzing trace with hash 537028541, now seen corresponding path program 1 times [2020-07-20 01:25:42,712 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:25:42,713 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015917427] [2020-07-20 01:25:42,713 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@5a8f702e [2020-07-20 01:25:42,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:25:42,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:25:42,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:25:42,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 01:25:42,976 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015917427] [2020-07-20 01:25:42,978 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 01:25:42,978 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 01:25:42,981 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363207045] [2020-07-20 01:25:42,987 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 01:25:42,988 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:25:43,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 01:25:43,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 01:25:43,008 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 5 states. [2020-07-20 01:25:43,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:25:43,103 INFO L93 Difference]: Finished difference Result 35 states and 41 transitions. [2020-07-20 01:25:43,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 01:25:43,106 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-07-20 01:25:43,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:25:43,117 INFO L225 Difference]: With dead ends: 35 [2020-07-20 01:25:43,118 INFO L226 Difference]: Without dead ends: 21 [2020-07-20 01:25:43,122 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-20 01:25:43,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-07-20 01:25:43,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2020-07-20 01:25:43,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-07-20 01:25:43,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2020-07-20 01:25:43,170 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 13 [2020-07-20 01:25:43,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:25:43,171 INFO L479 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2020-07-20 01:25:43,171 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 01:25:43,171 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2020-07-20 01:25:43,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-07-20 01:25:43,173 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:25:43,174 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 01:25:43,174 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-20 01:25:43,174 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:25:43,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:25:43,175 INFO L82 PathProgramCache]: Analyzing trace with hash 179123823, now seen corresponding path program 1 times [2020-07-20 01:25:43,175 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:25:43,176 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034108588] [2020-07-20 01:25:43,176 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@5a8f702e [2020-07-20 01:25:43,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:25:43,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:25:43,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:25:43,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 01:25:43,244 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034108588] [2020-07-20 01:25:43,244 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 01:25:43,244 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 01:25:43,244 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154176320] [2020-07-20 01:25:43,246 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 01:25:43,247 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:25:43,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 01:25:43,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 01:25:43,248 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand 5 states. [2020-07-20 01:25:43,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:25:43,307 INFO L93 Difference]: Finished difference Result 27 states and 32 transitions. [2020-07-20 01:25:43,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 01:25:43,308 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-07-20 01:25:43,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:25:43,310 INFO L225 Difference]: With dead ends: 27 [2020-07-20 01:25:43,310 INFO L226 Difference]: Without dead ends: 23 [2020-07-20 01:25:43,312 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-20 01:25:43,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-07-20 01:25:43,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 21. [2020-07-20 01:25:43,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-07-20 01:25:43,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2020-07-20 01:25:43,321 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 14 [2020-07-20 01:25:43,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:25:43,321 INFO L479 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2020-07-20 01:25:43,321 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 01:25:43,322 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2020-07-20 01:25:43,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-07-20 01:25:43,323 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:25:43,323 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 01:25:43,324 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-20 01:25:43,324 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:25:43,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:25:43,325 INFO L82 PathProgramCache]: Analyzing trace with hash 806022394, now seen corresponding path program 1 times [2020-07-20 01:25:43,325 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:25:43,325 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136374631] [2020-07-20 01:25:43,326 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@5a8f702e [2020-07-20 01:25:43,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:25:43,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:25:43,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:25:43,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:25:43,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:25:43,467 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-07-20 01:25:43,468 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136374631] [2020-07-20 01:25:43,468 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [702349416] [2020-07-20 01:25:43,469 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@1fd502b1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:25:43,523 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@1fd502b1 issued 3 check-sat command(s) [2020-07-20 01:25:43,523 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 01:25:43,525 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-20 01:25:43,533 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 01:25:43,642 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-07-20 01:25:43,643 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 01:25:43,643 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 9 [2020-07-20 01:25:43,644 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939869660] [2020-07-20 01:25:43,644 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-20 01:25:43,644 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:25:43,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-20 01:25:43,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-07-20 01:25:43,645 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand 9 states. [2020-07-20 01:25:43,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:25:43,820 INFO L93 Difference]: Finished difference Result 38 states and 49 transitions. [2020-07-20 01:25:43,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-20 01:25:43,821 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 26 [2020-07-20 01:25:43,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:25:43,822 INFO L225 Difference]: With dead ends: 38 [2020-07-20 01:25:43,822 INFO L226 Difference]: Without dead ends: 23 [2020-07-20 01:25:43,824 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2020-07-20 01:25:43,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-07-20 01:25:43,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-07-20 01:25:43,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-07-20 01:25:43,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2020-07-20 01:25:43,833 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 26 [2020-07-20 01:25:43,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:25:43,833 INFO L479 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2020-07-20 01:25:43,833 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-20 01:25:43,834 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2020-07-20 01:25:43,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-07-20 01:25:43,835 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:25:43,836 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 01:25:44,049 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-07-20 01:25:44,050 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:25:44,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:25:44,051 INFO L82 PathProgramCache]: Analyzing trace with hash -983862936, now seen corresponding path program 1 times [2020-07-20 01:25:44,051 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:25:44,052 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223899417] [2020-07-20 01:25:44,052 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@5a8f702e [2020-07-20 01:25:44,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:25:44,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:25:44,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:25:44,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:25:44,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:25:44,178 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-07-20 01:25:44,179 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223899417] [2020-07-20 01:25:44,179 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1645714455] [2020-07-20 01:25:44,179 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@10cd0f3a No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:25:44,226 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@10cd0f3a issued 3 check-sat command(s) [2020-07-20 01:25:44,227 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 01:25:44,227 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-20 01:25:44,232 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 01:25:44,277 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-07-20 01:25:44,278 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 01:25:44,278 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2020-07-20 01:25:44,279 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314781097] [2020-07-20 01:25:44,280 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-20 01:25:44,282 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:25:44,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-20 01:25:44,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-07-20 01:25:44,283 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand 7 states. [2020-07-20 01:25:44,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:25:44,402 INFO L93 Difference]: Finished difference Result 41 states and 55 transitions. [2020-07-20 01:25:44,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-20 01:25:44,404 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 27 [2020-07-20 01:25:44,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:25:44,406 INFO L225 Difference]: With dead ends: 41 [2020-07-20 01:25:44,406 INFO L226 Difference]: Without dead ends: 37 [2020-07-20 01:25:44,407 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-07-20 01:25:44,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-07-20 01:25:44,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-07-20 01:25:44,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-07-20 01:25:44,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 51 transitions. [2020-07-20 01:25:44,418 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 51 transitions. Word has length 27 [2020-07-20 01:25:44,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:25:44,418 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 51 transitions. [2020-07-20 01:25:44,419 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-20 01:25:44,419 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 51 transitions. [2020-07-20 01:25:44,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-07-20 01:25:44,421 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:25:44,421 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 01:25:44,630 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:25:44,631 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:25:44,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:25:44,632 INFO L82 PathProgramCache]: Analyzing trace with hash 146085807, now seen corresponding path program 2 times [2020-07-20 01:25:44,633 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:25:44,633 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733204341] [2020-07-20 01:25:44,633 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@5a8f702e [2020-07-20 01:25:44,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:25:44,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:25:44,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:25:44,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:25:44,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:25:44,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:25:44,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:25:44,856 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 23 proven. 7 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-07-20 01:25:44,856 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733204341] [2020-07-20 01:25:44,857 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1892940345] [2020-07-20 01:25:44,857 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@346c17f8 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:25:44,894 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@346c17f8 issued 3 check-sat command(s) [2020-07-20 01:25:44,894 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 01:25:44,895 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 8 conjunts are in the unsatisfiable core [2020-07-20 01:25:44,898 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 01:25:44,964 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 6 proven. 21 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-07-20 01:25:44,964 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 01:25:44,965 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 12 [2020-07-20 01:25:44,965 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553076493] [2020-07-20 01:25:44,966 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-07-20 01:25:44,966 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:25:44,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-07-20 01:25:44,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-07-20 01:25:44,967 INFO L87 Difference]: Start difference. First operand 37 states and 51 transitions. Second operand 12 states. [2020-07-20 01:25:45,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:25:45,244 INFO L93 Difference]: Finished difference Result 72 states and 109 transitions. [2020-07-20 01:25:45,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-07-20 01:25:45,245 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 40 [2020-07-20 01:25:45,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:25:45,247 INFO L225 Difference]: With dead ends: 72 [2020-07-20 01:25:45,248 INFO L226 Difference]: Without dead ends: 41 [2020-07-20 01:25:45,249 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=88, Invalid=254, Unknown=0, NotChecked=0, Total=342 [2020-07-20 01:25:45,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-07-20 01:25:45,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2020-07-20 01:25:45,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-07-20 01:25:45,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 49 transitions. [2020-07-20 01:25:45,260 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 49 transitions. Word has length 40 [2020-07-20 01:25:45,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:25:45,261 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 49 transitions. [2020-07-20 01:25:45,261 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-07-20 01:25:45,261 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 49 transitions. [2020-07-20 01:25:45,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-07-20 01:25:45,264 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:25:45,264 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 7, 4, 4, 4, 4, 4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 01:25:45,478 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:25:45,479 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:25:45,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:25:45,480 INFO L82 PathProgramCache]: Analyzing trace with hash 2001184551, now seen corresponding path program 3 times [2020-07-20 01:25:45,480 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:25:45,481 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315934224] [2020-07-20 01:25:45,481 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@5a8f702e [2020-07-20 01:25:45,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:25:45,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:25:45,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:25:45,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:25:45,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:25:45,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:25:45,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:25:45,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:25:45,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:25:45,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:25:45,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:25:45,698 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 17 proven. 88 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-07-20 01:25:45,699 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315934224] [2020-07-20 01:25:45,699 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2097652501] [2020-07-20 01:25:45,700 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@285786b5 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:25:45,753 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@285786b5 issued 3 check-sat command(s) [2020-07-20 01:25:45,753 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 01:25:45,754 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 10 conjunts are in the unsatisfiable core [2020-07-20 01:25:45,758 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 01:25:45,791 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 17 proven. 88 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-07-20 01:25:45,792 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 01:25:45,792 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2020-07-20 01:25:45,793 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409624874] [2020-07-20 01:25:45,793 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-20 01:25:45,794 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:25:45,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-20 01:25:45,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-07-20 01:25:45,794 INFO L87 Difference]: Start difference. First operand 41 states and 49 transitions. Second operand 9 states. [2020-07-20 01:25:45,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:25:45,957 INFO L93 Difference]: Finished difference Result 83 states and 114 transitions. [2020-07-20 01:25:45,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-20 01:25:45,958 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 68 [2020-07-20 01:25:45,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:25:45,962 INFO L225 Difference]: With dead ends: 83 [2020-07-20 01:25:45,962 INFO L226 Difference]: Without dead ends: 79 [2020-07-20 01:25:45,963 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-07-20 01:25:45,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-07-20 01:25:45,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 73. [2020-07-20 01:25:45,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-07-20 01:25:45,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 101 transitions. [2020-07-20 01:25:45,981 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 101 transitions. Word has length 68 [2020-07-20 01:25:45,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:25:45,982 INFO L479 AbstractCegarLoop]: Abstraction has 73 states and 101 transitions. [2020-07-20 01:25:45,982 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-20 01:25:45,982 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 101 transitions. [2020-07-20 01:25:45,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-07-20 01:25:45,989 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:25:45,989 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 17, 10, 10, 10, 10, 10, 10, 10, 7, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 01:25:46,202 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:25:46,203 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:25:46,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:25:46,204 INFO L82 PathProgramCache]: Analyzing trace with hash -2068257585, now seen corresponding path program 4 times [2020-07-20 01:25:46,205 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:25:46,206 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477668523] [2020-07-20 01:25:46,206 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@5a8f702e [2020-07-20 01:25:46,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:25:46,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:25:46,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:25:46,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:25:46,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:25:46,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:25:46,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:25:46,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:25:46,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:25:46,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:25:46,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:25:46,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:25:46,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:25:46,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:25:46,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:25:46,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:25:46,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:25:46,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:25:46,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:25:46,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:25:46,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:25:46,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:25:46,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:25:46,796 INFO L134 CoverageAnalysis]: Checked inductivity of 1156 backedges. 249 proven. 381 refuted. 0 times theorem prover too weak. 526 trivial. 0 not checked. [2020-07-20 01:25:46,796 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477668523] [2020-07-20 01:25:46,797 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1355837570] [2020-07-20 01:25:46,797 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@26f78ad9 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:25:46,876 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@26f78ad9 issued 4 check-sat command(s) [2020-07-20 01:25:46,877 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 01:25:46,881 INFO L263 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 12 conjunts are in the unsatisfiable core [2020-07-20 01:25:46,896 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 01:25:46,957 INFO L134 CoverageAnalysis]: Checked inductivity of 1156 backedges. 327 proven. 131 refuted. 0 times theorem prover too weak. 698 trivial. 0 not checked. [2020-07-20 01:25:46,958 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 01:25:46,958 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9] total 15 [2020-07-20 01:25:46,958 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945206836] [2020-07-20 01:25:46,960 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-07-20 01:25:46,960 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:25:46,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-07-20 01:25:46,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2020-07-20 01:25:46,961 INFO L87 Difference]: Start difference. First operand 73 states and 101 transitions. Second operand 15 states. [2020-07-20 01:25:47,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:25:47,523 INFO L93 Difference]: Finished difference Result 146 states and 255 transitions. [2020-07-20 01:25:47,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-07-20 01:25:47,524 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 150 [2020-07-20 01:25:47,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:25:47,526 INFO L225 Difference]: With dead ends: 146 [2020-07-20 01:25:47,526 INFO L226 Difference]: Without dead ends: 69 [2020-07-20 01:25:47,530 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=225, Invalid=767, Unknown=0, NotChecked=0, Total=992 [2020-07-20 01:25:47,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-07-20 01:25:47,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 59. [2020-07-20 01:25:47,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-07-20 01:25:47,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 70 transitions. [2020-07-20 01:25:47,542 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 70 transitions. Word has length 150 [2020-07-20 01:25:47,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:25:47,542 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 70 transitions. [2020-07-20 01:25:47,542 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-07-20 01:25:47,543 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 70 transitions. [2020-07-20 01:25:47,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-07-20 01:25:47,544 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:25:47,545 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 12, 7, 7, 7, 7, 7, 7, 7, 5, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 01:25:47,759 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2020-07-20 01:25:47,760 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:25:47,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:25:47,761 INFO L82 PathProgramCache]: Analyzing trace with hash 1200034344, now seen corresponding path program 5 times [2020-07-20 01:25:47,762 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:25:47,762 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251087022] [2020-07-20 01:25:47,763 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@5a8f702e [2020-07-20 01:25:47,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:25:47,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:25:47,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:25:47,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:25:48,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:25:48,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:25:48,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:25:48,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:25:48,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:25:48,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:25:48,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:25:48,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:25:48,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:25:48,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:25:48,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:25:48,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:25:48,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:25:48,353 INFO L134 CoverageAnalysis]: Checked inductivity of 570 backedges. 0 proven. 185 refuted. 0 times theorem prover too weak. 385 trivial. 0 not checked. [2020-07-20 01:25:48,354 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251087022] [2020-07-20 01:25:48,354 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1177161304] [2020-07-20 01:25:48,355 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@47e8d976 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:25:48,413 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@47e8d976 issued 4 check-sat command(s) [2020-07-20 01:25:48,413 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 01:25:48,416 INFO L263 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 63 conjunts are in the unsatisfiable core [2020-07-20 01:25:48,421 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 01:25:48,760 INFO L134 CoverageAnalysis]: Checked inductivity of 570 backedges. 0 proven. 185 refuted. 0 times theorem prover too weak. 385 trivial. 0 not checked. [2020-07-20 01:25:48,760 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 01:25:48,760 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 20 [2020-07-20 01:25:48,761 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989991669] [2020-07-20 01:25:48,761 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-07-20 01:25:48,762 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:25:48,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-07-20 01:25:48,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=335, Unknown=0, NotChecked=0, Total=380 [2020-07-20 01:25:48,764 INFO L87 Difference]: Start difference. First operand 59 states and 70 transitions. Second operand 20 states. [2020-07-20 01:25:48,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:25:48,952 INFO L93 Difference]: Finished difference Result 72 states and 85 transitions. [2020-07-20 01:25:48,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-07-20 01:25:48,952 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 109 [2020-07-20 01:25:48,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:25:48,954 INFO L225 Difference]: With dead ends: 72 [2020-07-20 01:25:48,954 INFO L226 Difference]: Without dead ends: 68 [2020-07-20 01:25:48,955 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 146 SyntacticMatches, 9 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=45, Invalid=335, Unknown=0, NotChecked=0, Total=380 [2020-07-20 01:25:48,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-07-20 01:25:48,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 67. [2020-07-20 01:25:48,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-07-20 01:25:48,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 80 transitions. [2020-07-20 01:25:48,966 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 80 transitions. Word has length 109 [2020-07-20 01:25:48,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:25:48,966 INFO L479 AbstractCegarLoop]: Abstraction has 67 states and 80 transitions. [2020-07-20 01:25:48,967 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-07-20 01:25:48,967 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 80 transitions. [2020-07-20 01:25:48,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-07-20 01:25:48,969 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:25:48,969 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 15, 9, 9, 9, 9, 9, 9, 9, 6, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 01:25:49,182 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:25:49,183 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:25:49,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:25:49,184 INFO L82 PathProgramCache]: Analyzing trace with hash -344605238, now seen corresponding path program 6 times [2020-07-20 01:25:49,184 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:25:49,185 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113899588] [2020-07-20 01:25:49,185 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@5a8f702e [2020-07-20 01:25:49,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:25:49,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:25:49,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:25:49,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:25:49,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:25:49,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:25:49,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:25:49,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:25:49,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:25:49,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:25:49,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:25:49,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:25:49,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:25:49,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:25:49,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:25:49,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:25:49,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:25:49,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:25:49,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:25:49,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:25:49,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:25:49,499 INFO L134 CoverageAnalysis]: Checked inductivity of 933 backedges. 204 proven. 219 refuted. 0 times theorem prover too weak. 510 trivial. 0 not checked. [2020-07-20 01:25:49,500 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113899588] [2020-07-20 01:25:49,500 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1926620697] [2020-07-20 01:25:49,501 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@21bba5ce No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:25:49,566 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@21bba5ce issued 3 check-sat command(s) [2020-07-20 01:25:49,567 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 01:25:49,568 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 14 conjunts are in the unsatisfiable core [2020-07-20 01:25:49,572 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 01:25:49,660 INFO L134 CoverageAnalysis]: Checked inductivity of 933 backedges. 131 proven. 297 refuted. 0 times theorem prover too weak. 505 trivial. 0 not checked. [2020-07-20 01:25:49,661 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 01:25:49,662 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 15 [2020-07-20 01:25:49,664 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686674709] [2020-07-20 01:25:49,665 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-07-20 01:25:49,665 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:25:49,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-07-20 01:25:49,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2020-07-20 01:25:49,666 INFO L87 Difference]: Start difference. First operand 67 states and 80 transitions. Second operand 15 states. [2020-07-20 01:25:50,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:25:50,011 INFO L93 Difference]: Finished difference Result 127 states and 169 transitions. [2020-07-20 01:25:50,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-07-20 01:25:50,012 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 136 [2020-07-20 01:25:50,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:25:50,013 INFO L225 Difference]: With dead ends: 127 [2020-07-20 01:25:50,013 INFO L226 Difference]: Without dead ends: 0 [2020-07-20 01:25:50,017 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2020-07-20 01:25:50,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-20 01:25:50,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-20 01:25:50,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-20 01:25:50,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-20 01:25:50,018 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 136 [2020-07-20 01:25:50,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:25:50,018 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-20 01:25:50,018 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-07-20 01:25:50,019 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-20 01:25:50,019 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-20 01:25:50,219 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:25:50,222 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-20 01:25:50,498 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 30 [2020-07-20 01:25:50,585 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-07-20 01:25:50,585 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-20 01:25:50,586 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-20 01:25:50,586 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-20 01:25:50,586 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-20 01:25:50,586 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-20 01:25:50,587 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 27) no Hoare annotation was computed. [2020-07-20 01:25:50,587 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 23 30) the Hoare annotation is: true [2020-07-20 01:25:50,587 INFO L268 CegarLoopResult]: For program point L27(line 27) no Hoare annotation was computed. [2020-07-20 01:25:50,587 INFO L268 CegarLoopResult]: For program point L26(lines 26 28) no Hoare annotation was computed. [2020-07-20 01:25:50,587 INFO L264 CegarLoopResult]: At program point L25(line 25) the Hoare annotation is: (and (<= main_~x~0 5) (<= 5 main_~x~0)) [2020-07-20 01:25:50,588 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 23 30) no Hoare annotation was computed. [2020-07-20 01:25:50,588 INFO L268 CegarLoopResult]: For program point L25-1(line 25) no Hoare annotation was computed. [2020-07-20 01:25:50,588 INFO L268 CegarLoopResult]: For program point L26-2(lines 26 28) no Hoare annotation was computed. [2020-07-20 01:25:50,588 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 23 30) no Hoare annotation was computed. [2020-07-20 01:25:50,588 INFO L268 CegarLoopResult]: For program point fiboEXIT(lines 5 13) no Hoare annotation was computed. [2020-07-20 01:25:50,588 INFO L268 CegarLoopResult]: For program point fiboFINAL(lines 5 13) no Hoare annotation was computed. [2020-07-20 01:25:50,589 INFO L264 CegarLoopResult]: At program point L11(line 11) the Hoare annotation is: (and (= fibo_~n |fibo_#in~n|) (<= 2 |fibo_#in~n|)) [2020-07-20 01:25:50,589 INFO L268 CegarLoopResult]: For program point L11-1(line 11) no Hoare annotation was computed. [2020-07-20 01:25:50,589 INFO L264 CegarLoopResult]: At program point L11-2(line 11) the Hoare annotation is: (let ((.cse0 (<= 1 |fibo_#t~ret0|)) (.cse1 (<= |fibo_#t~ret0| 1)) (.cse2 (= fibo_~n |fibo_#in~n|))) (or (and .cse0 .cse1 .cse2 (<= 3 |fibo_#in~n|) (<= |fibo_#in~n| 3)) (and (<= 3 |fibo_#t~ret0|) .cse2 (<= 5 fibo_~n) (<= |fibo_#t~ret0| 3)) (and .cse2 (<= 6 |fibo_#in~n|)) (and .cse0 .cse1 (<= |fibo_#in~n| 2) .cse2 (<= 2 |fibo_#in~n|)) (and (<= 4 |fibo_#in~n|) .cse2 (<= |fibo_#t~ret0| 2) (<= |fibo_#in~n| 4) (<= 2 |fibo_#t~ret0|)))) [2020-07-20 01:25:50,589 INFO L268 CegarLoopResult]: For program point L8(lines 8 12) no Hoare annotation was computed. [2020-07-20 01:25:50,589 INFO L268 CegarLoopResult]: For program point L11-3(line 11) no Hoare annotation was computed. [2020-07-20 01:25:50,589 INFO L268 CegarLoopResult]: For program point L6(lines 6 12) no Hoare annotation was computed. [2020-07-20 01:25:50,590 INFO L271 CegarLoopResult]: At program point fiboENTRY(lines 5 13) the Hoare annotation is: true [2020-07-20 01:25:50,596 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 01:25:50 BoogieIcfgContainer [2020-07-20 01:25:50,597 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 01:25:50,599 INFO L168 Benchmark]: Toolchain (without parser) took 8721.92 ms. Allocated memory was 139.5 MB in the beginning and 310.4 MB in the end (delta: 170.9 MB). Free memory was 102.9 MB in the beginning and 218.9 MB in the end (delta: -116.0 MB). Peak memory consumption was 54.9 MB. Max. memory is 7.1 GB. [2020-07-20 01:25:50,600 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 139.5 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-20 01:25:50,601 INFO L168 Benchmark]: CACSL2BoogieTranslator took 310.83 ms. Allocated memory is still 139.5 MB. Free memory was 102.4 MB in the beginning and 93.2 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. [2020-07-20 01:25:50,601 INFO L168 Benchmark]: Boogie Preprocessor took 25.89 ms. Allocated memory is still 139.5 MB. Free memory was 93.2 MB in the beginning and 91.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-07-20 01:25:50,602 INFO L168 Benchmark]: RCFGBuilder took 340.30 ms. Allocated memory was 139.5 MB in the beginning and 202.9 MB in the end (delta: 63.4 MB). Free memory was 91.8 MB in the beginning and 170.5 MB in the end (delta: -78.8 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. [2020-07-20 01:25:50,603 INFO L168 Benchmark]: TraceAbstraction took 8035.38 ms. Allocated memory was 202.9 MB in the beginning and 310.4 MB in the end (delta: 107.5 MB). Free memory was 170.5 MB in the beginning and 218.9 MB in the end (delta: -48.3 MB). Peak memory consumption was 59.1 MB. Max. memory is 7.1 GB. [2020-07-20 01:25:50,607 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 139.5 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 310.83 ms. Allocated memory is still 139.5 MB. Free memory was 102.4 MB in the beginning and 93.2 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 25.89 ms. Allocated memory is still 139.5 MB. Free memory was 93.2 MB in the beginning and 91.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 340.30 ms. Allocated memory was 139.5 MB in the beginning and 202.9 MB in the end (delta: 63.4 MB). Free memory was 91.8 MB in the beginning and 170.5 MB in the end (delta: -78.8 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 8035.38 ms. Allocated memory was 202.9 MB in the beginning and 310.4 MB in the end (delta: 107.5 MB). Free memory was 170.5 MB in the beginning and 218.9 MB in the end (delta: -48.3 MB). Peak memory consumption was 59.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 27]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 24 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 7.5s, OverallIterations: 9, TraceHistogramMax: 21, AutomataDifference: 2.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 204 SDtfs, 267 SDslu, 921 SDs, 0 SdLazy, 1113 SolverSat, 221 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 864 GetRequests, 732 SyntacticMatches, 9 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 310 ImplicationChecksByTransitivity, 1.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=73occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 19 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 131 PreInvPairs, 194 NumberOfFragments, 88 HoareAnnotationTreeSize, 131 FomulaSimplifications, 486 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 8 FomulaSimplificationsInter, 819 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.9s InterpolantComputationTime, 1139 NumberOfCodeBlocks, 1067 NumberOfCodeBlocksAsserted, 32 NumberOfCheckSat, 1123 ConstructedInterpolants, 0 QuantifiedInterpolants, 262711 SizeOfPredicates, 29 NumberOfNonLiveVariables, 1129 ConjunctsInSsa, 119 ConjunctsInUnsatCore, 16 InterpolantComputations, 2 PerfectInterpolantSequences, 4217/5840 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...