/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_6-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-267fbe0 [2020-07-17 11:58:51,797 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-17 11:58:51,800 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-17 11:58:51,823 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-17 11:58:51,824 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-17 11:58:51,826 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-17 11:58:51,828 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-17 11:58:51,840 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-17 11:58:51,844 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-17 11:58:51,847 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-17 11:58:51,849 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-17 11:58:51,852 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-17 11:58:51,852 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-17 11:58:51,854 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-17 11:58:51,856 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-17 11:58:51,858 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-17 11:58:51,859 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-17 11:58:51,860 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-17 11:58:51,862 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-17 11:58:51,867 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-17 11:58:51,873 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-17 11:58:51,877 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-17 11:58:51,878 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-17 11:58:51,879 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-17 11:58:51,882 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-17 11:58:51,892 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-17 11:58:51,893 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-17 11:58:51,894 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-17 11:58:51,896 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 [2020-07-17 11:58:51,939 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-17 11:58:51,939 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-17 11:58:51,944 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-17 11:58:51,945 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-17 11:58:51,945 INFO L138 SettingsManager]: * Use SBE=true [2020-07-17 11:58:51,945 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-17 11:58:51,946 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-17 11:58:51,946 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-17 11:58:51,946 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-17 11:58:51,949 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-17 11:58:51,950 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-17 11:58:51,950 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-17 11:58:51,950 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-17 11:58:51,951 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-17 11:58:51,951 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-17 11:58:51,951 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-17 11:58:51,951 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-17 11:58:51,952 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-17 11:58:51,952 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-17 11:58:51,954 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-17 11:58:51,954 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-17 11:58:51,955 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-17 11:58:51,955 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-17 11:58:51,956 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-17 11:58:51,956 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-17 11:58:51,957 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-17 11:58:51,957 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-17 11:58:51,957 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-17 11:58:51,957 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-17 11:58:51,957 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-07-17 11:58:52,307 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-17 11:58:52,325 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-17 11:58:52,330 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-17 11:58:52,332 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-17 11:58:52,332 INFO L275 PluginConnector]: CDTParser initialized [2020-07-17 11:58:52,333 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_6-1.c [2020-07-17 11:58:52,408 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bd3bcbf1f/413938a9a51a4746a55ba32b4bb68b25/FLAG561d29473 [2020-07-17 11:58:52,869 INFO L306 CDTParser]: Found 1 translation units. [2020-07-17 11:58:52,870 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive-simple/fibo_2calls_6-1.c [2020-07-17 11:58:52,877 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bd3bcbf1f/413938a9a51a4746a55ba32b4bb68b25/FLAG561d29473 [2020-07-17 11:58:53,229 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bd3bcbf1f/413938a9a51a4746a55ba32b4bb68b25 [2020-07-17 11:58:53,240 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-17 11:58:53,243 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-17 11:58:53,244 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-17 11:58:53,244 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-17 11:58:53,250 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-17 11:58:53,252 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 11:58:53" (1/1) ... [2020-07-17 11:58:53,255 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45493c83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 11:58:53, skipping insertion in model container [2020-07-17 11:58:53,256 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 11:58:53" (1/1) ... [2020-07-17 11:58:53,266 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-17 11:58:53,290 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-17 11:58:53,470 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 11:58:53,475 INFO L203 MainTranslator]: Completed pre-run [2020-07-17 11:58:53,493 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 11:58:53,507 INFO L208 MainTranslator]: Completed translation [2020-07-17 11:58:53,508 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 11:58:53 WrapperNode [2020-07-17 11:58:53,508 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-17 11:58:53,509 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-17 11:58:53,509 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-17 11:58:53,509 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-17 11:58:53,520 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 11:58:53" (1/1) ... [2020-07-17 11:58:53,520 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 11:58:53" (1/1) ... [2020-07-17 11:58:53,526 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 11:58:53" (1/1) ... [2020-07-17 11:58:53,527 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 11:58:53" (1/1) ... [2020-07-17 11:58:53,532 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 11:58:53" (1/1) ... [2020-07-17 11:58:53,534 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 11:58:53" (1/1) ... [2020-07-17 11:58:53,535 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 11:58:53" (1/1) ... [2020-07-17 11:58:53,537 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-17 11:58:53,538 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-17 11:58:53,538 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-17 11:58:53,538 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-17 11:58:53,539 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 11:58:53" (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 [2020-07-17 11:58:53,740 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-17 11:58:53,740 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-17 11:58:53,740 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2020-07-17 11:58:53,741 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2020-07-17 11:58:53,741 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-17 11:58:53,741 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-17 11:58:53,741 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-17 11:58:53,741 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2020-07-17 11:58:53,741 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2020-07-17 11:58:53,741 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-17 11:58:53,742 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-17 11:58:53,742 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-17 11:58:54,004 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-17 11:58:54,004 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-17 11:58:54,010 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 11:58:54 BoogieIcfgContainer [2020-07-17 11:58:54,011 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-17 11:58:54,013 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-17 11:58:54,013 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-17 11:58:54,018 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-17 11:58:54,018 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.07 11:58:53" (1/3) ... [2020-07-17 11:58:54,020 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b7d37c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 11:58:54, skipping insertion in model container [2020-07-17 11:58:54,020 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 11:58:53" (2/3) ... [2020-07-17 11:58:54,021 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b7d37c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 11:58:54, skipping insertion in model container [2020-07-17 11:58:54,021 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 11:58:54" (3/3) ... [2020-07-17 11:58:54,024 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_2calls_6-1.c [2020-07-17 11:58:54,040 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-17 11:58:54,049 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-17 11:58:54,070 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-17 11:58:54,102 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-17 11:58:54,103 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-17 11:58:54,103 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-17 11:58:54,103 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-17 11:58:54,104 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-17 11:58:54,104 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-17 11:58:54,104 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-17 11:58:54,105 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-17 11:58:54,128 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-07-17 11:58:54,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-07-17 11:58:54,136 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 11:58:54,137 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 11:58:54,138 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 11:58:54,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 11:58:54,144 INFO L82 PathProgramCache]: Analyzing trace with hash 1464461757, now seen corresponding path program 1 times [2020-07-17 11:58:54,154 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 11:58:54,155 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982218320] [2020-07-17 11:58:54,155 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 11:58:54,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:58:54,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:58:54,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:58:54,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 11:58:54,416 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982218320] [2020-07-17 11:58:54,417 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 11:58:54,418 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-17 11:58:54,419 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553663384] [2020-07-17 11:58:54,428 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-17 11:58:54,429 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 11:58:54,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-17 11:58:54,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-17 11:58:54,449 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 5 states. [2020-07-17 11:58:54,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 11:58:54,571 INFO L93 Difference]: Finished difference Result 44 states and 53 transitions. [2020-07-17 11:58:54,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-17 11:58:54,574 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-07-17 11:58:54,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 11:58:54,585 INFO L225 Difference]: With dead ends: 44 [2020-07-17 11:58:54,586 INFO L226 Difference]: Without dead ends: 30 [2020-07-17 11:58:54,590 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 [2020-07-17 11:58:54,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-07-17 11:58:54,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-07-17 11:58:54,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-07-17 11:58:54,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 37 transitions. [2020-07-17 11:58:54,643 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 37 transitions. Word has length 13 [2020-07-17 11:58:54,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 11:58:54,643 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 37 transitions. [2020-07-17 11:58:54,643 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-17 11:58:54,644 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 37 transitions. [2020-07-17 11:58:54,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-07-17 11:58:54,646 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 11:58:54,646 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 11:58:54,647 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-17 11:58:54,647 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 11:58:54,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 11:58:54,648 INFO L82 PathProgramCache]: Analyzing trace with hash -1134800479, now seen corresponding path program 1 times [2020-07-17 11:58:54,649 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 11:58:54,649 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020101342] [2020-07-17 11:58:54,649 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 11:58:54,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:58:54,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:58:54,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:58:54,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 11:58:54,724 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020101342] [2020-07-17 11:58:54,724 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 11:58:54,725 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-17 11:58:54,725 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726705421] [2020-07-17 11:58:54,731 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-17 11:58:54,732 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 11:58:54,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-17 11:58:54,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-17 11:58:54,733 INFO L87 Difference]: Start difference. First operand 30 states and 37 transitions. Second operand 5 states. [2020-07-17 11:58:54,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 11:58:54,805 INFO L93 Difference]: Finished difference Result 36 states and 44 transitions. [2020-07-17 11:58:54,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-17 11:58:54,806 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-07-17 11:58:54,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 11:58:54,809 INFO L225 Difference]: With dead ends: 36 [2020-07-17 11:58:54,809 INFO L226 Difference]: Without dead ends: 32 [2020-07-17 11:58:54,811 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 [2020-07-17 11:58:54,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-07-17 11:58:54,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2020-07-17 11:58:54,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-07-17 11:58:54,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 37 transitions. [2020-07-17 11:58:54,822 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 37 transitions. Word has length 14 [2020-07-17 11:58:54,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 11:58:54,823 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 37 transitions. [2020-07-17 11:58:54,823 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-17 11:58:54,823 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 37 transitions. [2020-07-17 11:58:54,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-07-17 11:58:54,825 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 11:58:54,825 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 11:58:54,826 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-17 11:58:54,826 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 11:58:54,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 11:58:54,827 INFO L82 PathProgramCache]: Analyzing trace with hash -1592795560, now seen corresponding path program 1 times [2020-07-17 11:58:54,827 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 11:58:54,828 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484220457] [2020-07-17 11:58:54,828 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 11:58:54,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:58:54,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:58:54,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:58:54,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:58:54,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:58:55,003 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-07-17 11:58:55,004 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484220457] [2020-07-17 11:58:55,004 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1415405729] [2020-07-17 11:58:55,005 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-17 11:58:55,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:58:55,068 INFO L264 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-17 11:58:55,079 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-17 11:58:55,266 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-07-17 11:58:55,267 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-17 11:58:55,268 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2020-07-17 11:58:55,270 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027820327] [2020-07-17 11:58:55,272 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-07-17 11:58:55,283 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 11:58:55,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-07-17 11:58:55,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-07-17 11:58:55,286 INFO L87 Difference]: Start difference. First operand 30 states and 37 transitions. Second operand 10 states. [2020-07-17 11:58:55,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 11:58:55,543 INFO L93 Difference]: Finished difference Result 58 states and 78 transitions. [2020-07-17 11:58:55,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-17 11:58:55,544 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 26 [2020-07-17 11:58:55,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 11:58:55,546 INFO L225 Difference]: With dead ends: 58 [2020-07-17 11:58:55,546 INFO L226 Difference]: Without dead ends: 34 [2020-07-17 11:58:55,548 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2020-07-17 11:58:55,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-07-17 11:58:55,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32. [2020-07-17 11:58:55,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-07-17 11:58:55,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 39 transitions. [2020-07-17 11:58:55,559 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 39 transitions. Word has length 26 [2020-07-17 11:58:55,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 11:58:55,559 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 39 transitions. [2020-07-17 11:58:55,559 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-07-17 11:58:55,560 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 39 transitions. [2020-07-17 11:58:55,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-07-17 11:58:55,561 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 11:58:55,562 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 11:58:55,777 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-07-17 11:58:55,778 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 11:58:55,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 11:58:55,779 INFO L82 PathProgramCache]: Analyzing trace with hash 746633022, now seen corresponding path program 1 times [2020-07-17 11:58:55,780 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 11:58:55,781 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406794065] [2020-07-17 11:58:55,781 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 11:58:55,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:58:55,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:58:55,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:58:55,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:58:55,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:58:55,905 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-07-17 11:58:55,905 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406794065] [2020-07-17 11:58:55,906 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [561649782] [2020-07-17 11:58:55,907 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-17 11:58:55,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:58:55,964 INFO L264 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-17 11:58:55,968 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-17 11:58:56,027 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-07-17 11:58:56,028 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-17 11:58:56,029 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-07-17 11:58:56,029 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978102355] [2020-07-17 11:58:56,030 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-17 11:58:56,030 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 11:58:56,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-17 11:58:56,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-07-17 11:58:56,031 INFO L87 Difference]: Start difference. First operand 32 states and 39 transitions. Second operand 9 states. [2020-07-17 11:58:56,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 11:58:56,243 INFO L93 Difference]: Finished difference Result 54 states and 74 transitions. [2020-07-17 11:58:56,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-07-17 11:58:56,244 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 27 [2020-07-17 11:58:56,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 11:58:56,248 INFO L225 Difference]: With dead ends: 54 [2020-07-17 11:58:56,249 INFO L226 Difference]: Without dead ends: 50 [2020-07-17 11:58:56,250 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-07-17 11:58:56,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-07-17 11:58:56,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 48. [2020-07-17 11:58:56,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-07-17 11:58:56,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 65 transitions. [2020-07-17 11:58:56,265 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 65 transitions. Word has length 27 [2020-07-17 11:58:56,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 11:58:56,265 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 65 transitions. [2020-07-17 11:58:56,266 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-17 11:58:56,266 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 65 transitions. [2020-07-17 11:58:56,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-07-17 11:58:56,268 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 11:58:56,268 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 11:58:56,483 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-17 11:58:56,484 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 11:58:56,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 11:58:56,485 INFO L82 PathProgramCache]: Analyzing trace with hash 986908919, now seen corresponding path program 1 times [2020-07-17 11:58:56,485 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 11:58:56,486 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758960210] [2020-07-17 11:58:56,486 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 11:58:56,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:58:56,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:58:56,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:58:56,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:58:56,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:58:56,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:58:56,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:58:56,621 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-07-17 11:58:56,622 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758960210] [2020-07-17 11:58:56,622 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1031222293] [2020-07-17 11:58:56,622 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2020-07-17 11:58:56,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:58:56,661 INFO L264 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 8 conjunts are in the unsatisfiable core [2020-07-17 11:58:56,669 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-17 11:58:56,780 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-07-17 11:58:56,781 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-17 11:58:56,781 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8] total 11 [2020-07-17 11:58:56,782 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435279622] [2020-07-17 11:58:56,783 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-07-17 11:58:56,784 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 11:58:56,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-07-17 11:58:56,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-07-17 11:58:56,785 INFO L87 Difference]: Start difference. First operand 48 states and 65 transitions. Second operand 11 states. [2020-07-17 11:58:57,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 11:58:57,173 INFO L93 Difference]: Finished difference Result 108 states and 170 transitions. [2020-07-17 11:58:57,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-07-17 11:58:57,175 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 39 [2020-07-17 11:58:57,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 11:58:57,179 INFO L225 Difference]: With dead ends: 108 [2020-07-17 11:58:57,179 INFO L226 Difference]: Without dead ends: 66 [2020-07-17 11:58:57,185 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2020-07-17 11:58:57,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-07-17 11:58:57,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2020-07-17 11:58:57,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-07-17 11:58:57,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 95 transitions. [2020-07-17 11:58:57,204 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 95 transitions. Word has length 39 [2020-07-17 11:58:57,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 11:58:57,205 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 95 transitions. [2020-07-17 11:58:57,205 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-07-17 11:58:57,205 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 95 transitions. [2020-07-17 11:58:57,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-07-17 11:58:57,208 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 11:58:57,208 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 11:58:57,424 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-17 11:58:57,425 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 11:58:57,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 11:58:57,426 INFO L82 PathProgramCache]: Analyzing trace with hash -2100495745, now seen corresponding path program 1 times [2020-07-17 11:58:57,427 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 11:58:57,427 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38808954] [2020-07-17 11:58:57,428 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 11:58:57,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:58:57,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:58:57,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:58:57,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:58:57,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:58:57,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:58:57,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:58:57,677 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-07-17 11:58:57,678 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38808954] [2020-07-17 11:58:57,679 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1493353140] [2020-07-17 11:58:57,679 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2020-07-17 11:58:57,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:58:57,713 INFO L264 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 8 conjunts are in the unsatisfiable core [2020-07-17 11:58:57,717 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-17 11:58:57,790 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-07-17 11:58:57,791 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-17 11:58:57,791 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2020-07-17 11:58:57,792 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061357475] [2020-07-17 11:58:57,792 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-07-17 11:58:57,793 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 11:58:57,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-07-17 11:58:57,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-07-17 11:58:57,794 INFO L87 Difference]: Start difference. First operand 66 states and 95 transitions. Second operand 13 states. [2020-07-17 11:58:58,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 11:58:58,250 INFO L93 Difference]: Finished difference Result 180 states and 324 transitions. [2020-07-17 11:58:58,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-07-17 11:58:58,251 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 40 [2020-07-17 11:58:58,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 11:58:58,255 INFO L225 Difference]: With dead ends: 180 [2020-07-17 11:58:58,255 INFO L226 Difference]: Without dead ends: 120 [2020-07-17 11:58:58,258 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=86, Invalid=376, Unknown=0, NotChecked=0, Total=462 [2020-07-17 11:58:58,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2020-07-17 11:58:58,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 106. [2020-07-17 11:58:58,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-07-17 11:58:58,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 169 transitions. [2020-07-17 11:58:58,285 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 169 transitions. Word has length 40 [2020-07-17 11:58:58,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 11:58:58,285 INFO L479 AbstractCegarLoop]: Abstraction has 106 states and 169 transitions. [2020-07-17 11:58:58,285 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-07-17 11:58:58,286 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 169 transitions. [2020-07-17 11:58:58,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-07-17 11:58:58,290 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 11:58:58,291 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 11:58:58,503 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-17 11:58:58,504 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 11:58:58,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 11:58:58,505 INFO L82 PathProgramCache]: Analyzing trace with hash -405677468, now seen corresponding path program 1 times [2020-07-17 11:58:58,506 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 11:58:58,506 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657522302] [2020-07-17 11:58:58,507 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 11:58:58,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:58:58,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:58:58,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:58:58,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:58:58,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:58:58,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:58:58,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:58:58,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:58:58,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:58:58,673 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 15 proven. 4 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-07-17 11:58:58,673 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657522302] [2020-07-17 11:58:58,674 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [564948134] [2020-07-17 11:58:58,674 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2020-07-17 11:58:58,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:58:58,709 INFO L264 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 10 conjunts are in the unsatisfiable core [2020-07-17 11:58:58,712 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-17 11:58:58,815 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 4 proven. 23 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-07-17 11:58:58,816 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-17 11:58:58,816 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 14 [2020-07-17 11:58:58,817 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102973433] [2020-07-17 11:58:58,817 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-07-17 11:58:58,818 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 11:58:58,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-07-17 11:58:58,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2020-07-17 11:58:58,819 INFO L87 Difference]: Start difference. First operand 106 states and 169 transitions. Second operand 14 states. [2020-07-17 11:58:59,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 11:58:59,404 INFO L93 Difference]: Finished difference Result 258 states and 498 transitions. [2020-07-17 11:58:59,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-07-17 11:58:59,406 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 54 [2020-07-17 11:58:59,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 11:58:59,409 INFO L225 Difference]: With dead ends: 258 [2020-07-17 11:58:59,410 INFO L226 Difference]: Without dead ends: 158 [2020-07-17 11:58:59,412 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=102, Invalid=450, Unknown=0, NotChecked=0, Total=552 [2020-07-17 11:58:59,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-07-17 11:58:59,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 112. [2020-07-17 11:58:59,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-07-17 11:58:59,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 180 transitions. [2020-07-17 11:58:59,466 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 180 transitions. Word has length 54 [2020-07-17 11:58:59,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 11:58:59,468 INFO L479 AbstractCegarLoop]: Abstraction has 112 states and 180 transitions. [2020-07-17 11:58:59,468 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-07-17 11:58:59,468 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 180 transitions. [2020-07-17 11:58:59,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-07-17 11:58:59,476 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 11:58:59,476 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 11:58:59,677 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2020-07-17 11:58:59,678 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 11:58:59,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 11:58:59,678 INFO L82 PathProgramCache]: Analyzing trace with hash -1504181040, now seen corresponding path program 1 times [2020-07-17 11:58:59,679 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 11:58:59,679 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28630365] [2020-07-17 11:58:59,679 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 11:58:59,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:58:59,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:58:59,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:58:59,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:58:59,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:58:59,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:58:59,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:58:59,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:58:59,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:58:59,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:58:59,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:58:59,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:58:59,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:59:00,002 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 39 proven. 38 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2020-07-17 11:59:00,003 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28630365] [2020-07-17 11:59:00,004 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [386195275] [2020-07-17 11:59:00,004 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2020-07-17 11:59:00,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:59:00,074 INFO L264 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 12 conjunts are in the unsatisfiable core [2020-07-17 11:59:00,095 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-17 11:59:00,213 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 12 proven. 68 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-07-17 11:59:00,213 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-17 11:59:00,214 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2020-07-17 11:59:00,214 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078950101] [2020-07-17 11:59:00,215 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-07-17 11:59:00,215 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 11:59:00,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-07-17 11:59:00,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2020-07-17 11:59:00,216 INFO L87 Difference]: Start difference. First operand 112 states and 180 transitions. Second operand 16 states. [2020-07-17 11:59:00,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 11:59:00,825 INFO L93 Difference]: Finished difference Result 243 states and 465 transitions. [2020-07-17 11:59:00,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-07-17 11:59:00,826 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 82 [2020-07-17 11:59:00,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 11:59:00,828 INFO L225 Difference]: With dead ends: 243 [2020-07-17 11:59:00,829 INFO L226 Difference]: Without dead ends: 110 [2020-07-17 11:59:00,834 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=153, Invalid=717, Unknown=0, NotChecked=0, Total=870 [2020-07-17 11:59:00,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-07-17 11:59:00,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 87. [2020-07-17 11:59:00,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-07-17 11:59:00,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 119 transitions. [2020-07-17 11:59:00,864 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 119 transitions. Word has length 82 [2020-07-17 11:59:00,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 11:59:00,865 INFO L479 AbstractCegarLoop]: Abstraction has 87 states and 119 transitions. [2020-07-17 11:59:00,865 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-07-17 11:59:00,865 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 119 transitions. [2020-07-17 11:59:00,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-07-17 11:59:00,869 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 11:59:00,870 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 7, 7, 7, 7, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 11:59:01,084 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-17 11:59:01,085 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 11:59:01,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 11:59:01,086 INFO L82 PathProgramCache]: Analyzing trace with hash 2095197631, now seen corresponding path program 1 times [2020-07-17 11:59:01,087 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 11:59:01,087 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262296573] [2020-07-17 11:59:01,089 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 11:59:01,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:59:01,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:59:01,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:59:01,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:59:01,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:59:01,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:59:01,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:59:01,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:59:01,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:59:01,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:59:01,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:59:01,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:59:01,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:59:01,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:59:01,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:59:01,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:59:01,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:59:01,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:59:01,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:59:01,453 INFO L134 CoverageAnalysis]: Checked inductivity of 358 backedges. 61 proven. 94 refuted. 0 times theorem prover too weak. 203 trivial. 0 not checked. [2020-07-17 11:59:01,454 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262296573] [2020-07-17 11:59:01,454 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2081957432] [2020-07-17 11:59:01,454 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2020-07-17 11:59:01,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:59:01,522 INFO L264 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 10 conjunts are in the unsatisfiable core [2020-07-17 11:59:01,531 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-17 11:59:01,609 INFO L134 CoverageAnalysis]: Checked inductivity of 358 backedges. 48 proven. 89 refuted. 0 times theorem prover too weak. 221 trivial. 0 not checked. [2020-07-17 11:59:01,609 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-17 11:59:01,610 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 15 [2020-07-17 11:59:01,610 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024727734] [2020-07-17 11:59:01,611 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-07-17 11:59:01,611 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 11:59:01,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-07-17 11:59:01,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2020-07-17 11:59:01,612 INFO L87 Difference]: Start difference. First operand 87 states and 119 transitions. Second operand 15 states. [2020-07-17 11:59:02,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 11:59:02,106 INFO L93 Difference]: Finished difference Result 172 states and 251 transitions. [2020-07-17 11:59:02,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-07-17 11:59:02,107 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 123 [2020-07-17 11:59:02,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 11:59:02,109 INFO L225 Difference]: With dead ends: 172 [2020-07-17 11:59:02,109 INFO L226 Difference]: Without dead ends: 96 [2020-07-17 11:59:02,112 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=117, Invalid=533, Unknown=0, NotChecked=0, Total=650 [2020-07-17 11:59:02,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-07-17 11:59:02,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 90. [2020-07-17 11:59:02,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-07-17 11:59:02,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 121 transitions. [2020-07-17 11:59:02,131 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 121 transitions. Word has length 123 [2020-07-17 11:59:02,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 11:59:02,131 INFO L479 AbstractCegarLoop]: Abstraction has 90 states and 121 transitions. [2020-07-17 11:59:02,132 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-07-17 11:59:02,132 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 121 transitions. [2020-07-17 11:59:02,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-07-17 11:59:02,139 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 11:59:02,140 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 10, 9, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 11:59:02,354 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-17 11:59:02,355 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 11:59:02,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 11:59:02,356 INFO L82 PathProgramCache]: Analyzing trace with hash 639237618, now seen corresponding path program 1 times [2020-07-17 11:59:02,357 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 11:59:02,357 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621820083] [2020-07-17 11:59:02,358 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 11:59:02,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:59:02,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:59:02,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:59:02,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:59:02,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:59:02,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:59:02,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:59:02,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:59:02,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:59:02,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:59:02,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:59:02,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:59:02,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:59:02,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:59:02,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:59:02,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:59:02,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:59:02,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:59:02,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:59:02,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:59:02,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:59:02,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:59:02,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:59:02,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:59:02,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:59:02,814 INFO L134 CoverageAnalysis]: Checked inductivity of 665 backedges. 179 proven. 162 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2020-07-17 11:59:02,814 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621820083] [2020-07-17 11:59:02,815 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [154763889] [2020-07-17 11:59:02,815 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-17 11:59:02,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:59:02,920 INFO L264 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 10 conjunts are in the unsatisfiable core [2020-07-17 11:59:02,932 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-17 11:59:03,058 INFO L134 CoverageAnalysis]: Checked inductivity of 665 backedges. 146 proven. 53 refuted. 0 times theorem prover too weak. 466 trivial. 0 not checked. [2020-07-17 11:59:03,059 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-17 11:59:03,060 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 9] total 18 [2020-07-17 11:59:03,062 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267121732] [2020-07-17 11:59:03,063 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-07-17 11:59:03,064 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 11:59:03,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-07-17 11:59:03,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=265, Unknown=0, NotChecked=0, Total=306 [2020-07-17 11:59:03,065 INFO L87 Difference]: Start difference. First operand 90 states and 121 transitions. Second operand 18 states. [2020-07-17 11:59:03,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 11:59:03,830 INFO L93 Difference]: Finished difference Result 195 states and 295 transitions. [2020-07-17 11:59:03,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-07-17 11:59:03,831 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 164 [2020-07-17 11:59:03,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 11:59:03,835 INFO L225 Difference]: With dead ends: 195 [2020-07-17 11:59:03,835 INFO L226 Difference]: Without dead ends: 113 [2020-07-17 11:59:03,837 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 211 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=145, Invalid=785, Unknown=0, NotChecked=0, Total=930 [2020-07-17 11:59:03,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-07-17 11:59:03,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 94. [2020-07-17 11:59:03,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-07-17 11:59:03,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 122 transitions. [2020-07-17 11:59:03,849 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 122 transitions. Word has length 164 [2020-07-17 11:59:03,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 11:59:03,850 INFO L479 AbstractCegarLoop]: Abstraction has 94 states and 122 transitions. [2020-07-17 11:59:03,850 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-07-17 11:59:03,850 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 122 transitions. [2020-07-17 11:59:03,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2020-07-17 11:59:03,853 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 11:59:03,854 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 15, 14, 14, 12, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 11:59:04,067 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-07-17 11:59:04,068 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 11:59:04,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 11:59:04,070 INFO L82 PathProgramCache]: Analyzing trace with hash 1218599998, now seen corresponding path program 2 times [2020-07-17 11:59:04,070 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 11:59:04,071 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589031422] [2020-07-17 11:59:04,071 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 11:59:04,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:59:04,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:59:04,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:59:04,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:59:04,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:59:04,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:59:04,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:59:04,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:59:04,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:59:04,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:59:04,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:59:04,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:59:04,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:59:04,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:59:04,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:59:04,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:59:04,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:59:04,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:59:04,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:59:04,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:59:04,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:59:04,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:59:04,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:59:04,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:59:04,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:59:04,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:59:04,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:59:04,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:59:04,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:59:04,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:59:04,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:59:04,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:59:04,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:59:04,566 INFO L134 CoverageAnalysis]: Checked inductivity of 1275 backedges. 104 proven. 358 refuted. 0 times theorem prover too weak. 813 trivial. 0 not checked. [2020-07-17 11:59:04,566 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589031422] [2020-07-17 11:59:04,568 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [887641605] [2020-07-17 11:59:04,568 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-17 11:59:04,674 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-07-17 11:59:04,674 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-17 11:59:04,677 INFO L264 TraceCheckSpWp]: Trace formula consists of 489 conjuncts, 12 conjunts are in the unsatisfiable core [2020-07-17 11:59:04,688 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-17 11:59:04,912 INFO L134 CoverageAnalysis]: Checked inductivity of 1275 backedges. 97 proven. 261 refuted. 0 times theorem prover too weak. 917 trivial. 0 not checked. [2020-07-17 11:59:04,913 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-17 11:59:04,913 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 18 [2020-07-17 11:59:04,914 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199808604] [2020-07-17 11:59:04,915 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-07-17 11:59:04,915 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 11:59:04,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-07-17 11:59:04,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=265, Unknown=0, NotChecked=0, Total=306 [2020-07-17 11:59:04,916 INFO L87 Difference]: Start difference. First operand 94 states and 122 transitions. Second operand 18 states. [2020-07-17 11:59:05,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 11:59:05,619 INFO L93 Difference]: Finished difference Result 219 states and 332 transitions. [2020-07-17 11:59:05,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-07-17 11:59:05,620 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 220 [2020-07-17 11:59:05,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 11:59:05,627 INFO L225 Difference]: With dead ends: 219 [2020-07-17 11:59:05,628 INFO L226 Difference]: Without dead ends: 107 [2020-07-17 11:59:05,631 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 311 GetRequests, 281 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=147, Invalid=845, Unknown=0, NotChecked=0, Total=992 [2020-07-17 11:59:05,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-07-17 11:59:05,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 101. [2020-07-17 11:59:05,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-07-17 11:59:05,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 125 transitions. [2020-07-17 11:59:05,651 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 125 transitions. Word has length 220 [2020-07-17 11:59:05,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 11:59:05,652 INFO L479 AbstractCegarLoop]: Abstraction has 101 states and 125 transitions. [2020-07-17 11:59:05,652 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-07-17 11:59:05,652 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 125 transitions. [2020-07-17 11:59:05,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2020-07-17 11:59:05,661 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 11:59:05,661 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 18, 18, 17, 14, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 8, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 11:59:05,876 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-17 11:59:05,877 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 11:59:05,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 11:59:05,878 INFO L82 PathProgramCache]: Analyzing trace with hash 214574526, now seen corresponding path program 3 times [2020-07-17 11:59:05,878 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 11:59:05,879 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206536764] [2020-07-17 11:59:05,879 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 11:59:05,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:59:06,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:59:06,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:59:06,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:59:06,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:59:06,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:59:06,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:59:06,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:59:06,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:59:06,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:59:06,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:59:06,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:59:06,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:59:06,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:59:06,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:59:06,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:59:06,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:59:06,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:59:06,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:59:06,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:59:06,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:59:06,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:59:06,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:59:06,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:59:06,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:59:06,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:59:06,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:59:06,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:59:06,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:59:06,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:59:06,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:59:06,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:59:06,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:59:06,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:59:06,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:59:06,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:59:06,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:59:06,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:59:06,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:59:06,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:59:06,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:59:06,585 INFO L134 CoverageAnalysis]: Checked inductivity of 2003 backedges. 157 proven. 549 refuted. 0 times theorem prover too weak. 1297 trivial. 0 not checked. [2020-07-17 11:59:06,586 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206536764] [2020-07-17 11:59:06,586 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1276979665] [2020-07-17 11:59:06,586 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-17 11:59:06,671 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2020-07-17 11:59:06,671 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-17 11:59:06,672 INFO L264 TraceCheckSpWp]: Trace formula consists of 347 conjuncts, 10 conjunts are in the unsatisfiable core [2020-07-17 11:59:06,677 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-17 11:59:06,808 INFO L134 CoverageAnalysis]: Checked inductivity of 2003 backedges. 318 proven. 76 refuted. 0 times theorem prover too weak. 1609 trivial. 0 not checked. [2020-07-17 11:59:06,809 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-17 11:59:06,809 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 9] total 20 [2020-07-17 11:59:06,809 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460809721] [2020-07-17 11:59:06,810 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-07-17 11:59:06,810 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 11:59:06,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-07-17 11:59:06,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=328, Unknown=0, NotChecked=0, Total=380 [2020-07-17 11:59:06,811 INFO L87 Difference]: Start difference. First operand 101 states and 125 transitions. Second operand 20 states. [2020-07-17 11:59:07,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 11:59:07,747 INFO L93 Difference]: Finished difference Result 233 states and 314 transitions. [2020-07-17 11:59:07,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-07-17 11:59:07,747 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 272 [2020-07-17 11:59:07,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 11:59:07,750 INFO L225 Difference]: With dead ends: 233 [2020-07-17 11:59:07,750 INFO L226 Difference]: Without dead ends: 131 [2020-07-17 11:59:07,753 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 389 GetRequests, 347 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 411 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=270, Invalid=1622, Unknown=0, NotChecked=0, Total=1892 [2020-07-17 11:59:07,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-07-17 11:59:07,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 114. [2020-07-17 11:59:07,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-07-17 11:59:07,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 139 transitions. [2020-07-17 11:59:07,766 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 139 transitions. Word has length 272 [2020-07-17 11:59:07,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 11:59:07,769 INFO L479 AbstractCegarLoop]: Abstraction has 114 states and 139 transitions. [2020-07-17 11:59:07,769 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-07-17 11:59:07,770 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 139 transitions. [2020-07-17 11:59:07,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-07-17 11:59:07,773 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 11:59:07,774 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 11:59:07,983 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-17 11:59:07,985 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 11:59:07,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 11:59:07,986 INFO L82 PathProgramCache]: Analyzing trace with hash 307857833, now seen corresponding path program 4 times [2020-07-17 11:59:07,986 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 11:59:07,986 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029243941] [2020-07-17 11:59:07,987 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 11:59:08,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:59:08,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:59:08,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:59:08,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:59:08,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:59:08,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:59:08,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:59:08,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:59:08,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:59:08,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:59:08,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:59:08,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:59:08,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:59:08,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:59:08,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:59:08,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:59:08,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:59:08,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:59:08,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:59:08,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:59:08,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:59:08,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:59:08,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:59:08,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:59:08,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:59:08,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:59:08,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:59:09,157 INFO L134 CoverageAnalysis]: Checked inductivity of 786 backedges. 0 proven. 267 refuted. 0 times theorem prover too weak. 519 trivial. 0 not checked. [2020-07-17 11:59:09,158 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029243941] [2020-07-17 11:59:09,158 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [225002229] [2020-07-17 11:59:09,158 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-17 11:59:09,237 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-07-17 11:59:09,237 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-17 11:59:09,243 INFO L264 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 103 conjunts are in the unsatisfiable core [2020-07-17 11:59:09,248 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-17 11:59:10,214 INFO L134 CoverageAnalysis]: Checked inductivity of 786 backedges. 0 proven. 267 refuted. 0 times theorem prover too weak. 519 trivial. 0 not checked. [2020-07-17 11:59:10,215 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-17 11:59:10,215 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 36 [2020-07-17 11:59:10,216 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270020915] [2020-07-17 11:59:10,217 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-07-17 11:59:10,218 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 11:59:10,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-07-17 11:59:10,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=1175, Unknown=0, NotChecked=0, Total=1260 [2020-07-17 11:59:10,219 INFO L87 Difference]: Start difference. First operand 114 states and 139 transitions. Second operand 36 states. [2020-07-17 11:59:10,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 11:59:10,676 INFO L93 Difference]: Finished difference Result 126 states and 151 transitions. [2020-07-17 11:59:10,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-07-17 11:59:10,677 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 177 [2020-07-17 11:59:10,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 11:59:10,679 INFO L225 Difference]: With dead ends: 126 [2020-07-17 11:59:10,679 INFO L226 Difference]: Without dead ends: 108 [2020-07-17 11:59:10,681 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 233 SyntacticMatches, 14 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=85, Invalid=1175, Unknown=0, NotChecked=0, Total=1260 [2020-07-17 11:59:10,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-07-17 11:59:10,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2020-07-17 11:59:10,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-07-17 11:59:10,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 129 transitions. [2020-07-17 11:59:10,690 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 129 transitions. Word has length 177 [2020-07-17 11:59:10,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 11:59:10,690 INFO L479 AbstractCegarLoop]: Abstraction has 108 states and 129 transitions. [2020-07-17 11:59:10,690 INFO L480 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-07-17 11:59:10,691 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 129 transitions. [2020-07-17 11:59:10,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2020-07-17 11:59:10,695 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 11:59:10,695 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 18, 18, 15, 14, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 6, 5, 5, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 11:59:10,909 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-07-17 11:59:10,910 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 11:59:10,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 11:59:10,911 INFO L82 PathProgramCache]: Analyzing trace with hash -657441605, now seen corresponding path program 5 times [2020-07-17 11:59:10,911 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 11:59:10,911 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032550292] [2020-07-17 11:59:10,911 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 11:59:10,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:59:10,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:59:11,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:59:11,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:59:11,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:59:11,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:59:11,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:59:11,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:59:11,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:59:11,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:59:11,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:59:11,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:59:11,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:59:11,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:59:11,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:59:11,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:59:11,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:59:11,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:59:11,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:59:11,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:59:11,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:59:11,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:59:11,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:59:11,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:59:11,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:59:11,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:59:11,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:59:11,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:59:11,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:59:11,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:59:11,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:59:11,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:59:11,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:59:11,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:59:11,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:59:11,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:59:11,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:59:11,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:59:11,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:59:11,654 INFO L134 CoverageAnalysis]: Checked inductivity of 1780 backedges. 177 proven. 313 refuted. 0 times theorem prover too weak. 1290 trivial. 0 not checked. [2020-07-17 11:59:11,655 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032550292] [2020-07-17 11:59:11,656 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1689206340] [2020-07-17 11:59:11,656 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-17 11:59:11,754 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2020-07-17 11:59:11,754 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-17 11:59:11,756 INFO L264 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 14 conjunts are in the unsatisfiable core [2020-07-17 11:59:11,762 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-17 11:59:12,111 INFO L134 CoverageAnalysis]: Checked inductivity of 1780 backedges. 934 proven. 64 refuted. 0 times theorem prover too weak. 782 trivial. 0 not checked. [2020-07-17 11:59:12,112 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-17 11:59:12,113 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13] total 19 [2020-07-17 11:59:12,114 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225370780] [2020-07-17 11:59:12,116 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-07-17 11:59:12,116 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 11:59:12,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-07-17 11:59:12,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=294, Unknown=0, NotChecked=0, Total=342 [2020-07-17 11:59:12,120 INFO L87 Difference]: Start difference. First operand 108 states and 129 transitions. Second operand 19 states. [2020-07-17 11:59:12,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 11:59:12,550 INFO L93 Difference]: Finished difference Result 180 states and 217 transitions. [2020-07-17 11:59:12,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-07-17 11:59:12,551 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 258 [2020-07-17 11:59:12,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 11:59:12,552 INFO L225 Difference]: With dead ends: 180 [2020-07-17 11:59:12,552 INFO L226 Difference]: Without dead ends: 0 [2020-07-17 11:59:12,554 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 328 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=122, Invalid=634, Unknown=0, NotChecked=0, Total=756 [2020-07-17 11:59:12,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-17 11:59:12,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-17 11:59:12,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-17 11:59:12,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-17 11:59:12,555 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 258 [2020-07-17 11:59:12,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 11:59:12,556 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-17 11:59:12,556 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-07-17 11:59:12,556 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-17 11:59:12,556 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-17 11:59:12,768 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2020-07-17 11:59:12,772 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-17 11:59:13,720 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 6 [2020-07-17 11:59:13,859 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 1 [2020-07-17 11:59:14,424 WARN L193 SmtUtils]: Spent 559.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 24 [2020-07-17 11:59:14,537 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 13 [2020-07-17 11:59:15,199 WARN L193 SmtUtils]: Spent 653.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 28 [2020-07-17 11:59:15,206 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-07-17 11:59:15,207 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-17 11:59:15,207 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-17 11:59:15,207 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-17 11:59:15,207 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-17 11:59:15,207 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-17 11:59:15,208 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 39) no Hoare annotation was computed. [2020-07-17 11:59:15,208 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 35 42) the Hoare annotation is: true [2020-07-17 11:59:15,208 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 35 42) no Hoare annotation was computed. [2020-07-17 11:59:15,208 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 35 42) no Hoare annotation was computed. [2020-07-17 11:59:15,209 INFO L268 CegarLoopResult]: For program point L39(line 39) no Hoare annotation was computed. [2020-07-17 11:59:15,209 INFO L268 CegarLoopResult]: For program point L38(lines 38 40) no Hoare annotation was computed. [2020-07-17 11:59:15,209 INFO L264 CegarLoopResult]: At program point L37(line 37) the Hoare annotation is: (and (<= main_~x~0 6) (<= 6 main_~x~0)) [2020-07-17 11:59:15,209 INFO L268 CegarLoopResult]: For program point L37-1(line 37) no Hoare annotation was computed. [2020-07-17 11:59:15,209 INFO L268 CegarLoopResult]: For program point L38-2(lines 38 40) no Hoare annotation was computed. [2020-07-17 11:59:15,210 INFO L271 CegarLoopResult]: At program point fibo2ENTRY(lines 17 25) the Hoare annotation is: true [2020-07-17 11:59:15,210 INFO L264 CegarLoopResult]: At program point L23(line 23) the Hoare annotation is: (and (= fibo2_~n |fibo2_#in~n|) (< 1 fibo2_~n)) [2020-07-17 11:59:15,210 INFO L268 CegarLoopResult]: For program point L23-1(line 23) no Hoare annotation was computed. [2020-07-17 11:59:15,210 INFO L264 CegarLoopResult]: At program point L23-2(line 23) the Hoare annotation is: (and (or (<= 1 |fibo2_#t~ret2|) (<= 4 fibo2_~n)) (< 1 fibo2_~n) (= fibo2_~n |fibo2_#in~n|) (or (<= 6 |fibo2_#in~n|) (<= |fibo2_#in~n| 3) (and (<= |fibo2_#t~ret2| 3) (<= 3 |fibo2_#t~ret2|))) (or (not (<= |fibo2_#in~n| 4)) (<= |fibo2_#t~ret2| 1))) [2020-07-17 11:59:15,210 INFO L268 CegarLoopResult]: For program point L20(lines 20 24) no Hoare annotation was computed. [2020-07-17 11:59:15,210 INFO L268 CegarLoopResult]: For program point L23-3(line 23) no Hoare annotation was computed. [2020-07-17 11:59:15,211 INFO L268 CegarLoopResult]: For program point L18(lines 18 24) no Hoare annotation was computed. [2020-07-17 11:59:15,211 INFO L268 CegarLoopResult]: For program point fibo2FINAL(lines 17 25) no Hoare annotation was computed. [2020-07-17 11:59:15,211 INFO L268 CegarLoopResult]: For program point fibo2EXIT(lines 17 25) no Hoare annotation was computed. [2020-07-17 11:59:15,211 INFO L271 CegarLoopResult]: At program point fibo1ENTRY(lines 7 15) the Hoare annotation is: true [2020-07-17 11:59:15,211 INFO L264 CegarLoopResult]: At program point L13(line 13) the Hoare annotation is: (and (or (not (<= |fibo1_#in~n| 3)) (<= |fibo1_#in~n| 2)) (not (<= |fibo1_#in~n| 1)) (= fibo1_~n |fibo1_#in~n|)) [2020-07-17 11:59:15,211 INFO L268 CegarLoopResult]: For program point L13-1(line 13) no Hoare annotation was computed. [2020-07-17 11:59:15,212 INFO L264 CegarLoopResult]: At program point L13-2(line 13) the Hoare annotation is: (let ((.cse0 (<= |fibo1_#in~n| 3))) (and (or (not .cse0) (and (<= 1 |fibo1_#t~ret0|) (< 1 fibo1_~n) (<= |fibo1_#t~ret0| 1))) (or (<= 5 fibo1_~n) .cse0 (and (<= |fibo1_#t~ret0| 2) (<= 2 |fibo1_#t~ret0|))) (or (<= 7 |fibo1_#in~n|) (<= |fibo1_#in~n| 5) (and (<= |fibo1_#t~ret0| 5) (<= 5 |fibo1_#t~ret0|))) (= fibo1_~n |fibo1_#in~n|))) [2020-07-17 11:59:15,212 INFO L268 CegarLoopResult]: For program point fibo1FINAL(lines 7 15) no Hoare annotation was computed. [2020-07-17 11:59:15,212 INFO L268 CegarLoopResult]: For program point L10(lines 10 14) no Hoare annotation was computed. [2020-07-17 11:59:15,212 INFO L268 CegarLoopResult]: For program point L13-3(line 13) no Hoare annotation was computed. [2020-07-17 11:59:15,212 INFO L268 CegarLoopResult]: For program point L8(lines 8 14) no Hoare annotation was computed. [2020-07-17 11:59:15,213 INFO L268 CegarLoopResult]: For program point fibo1EXIT(lines 7 15) no Hoare annotation was computed. [2020-07-17 11:59:15,220 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.07 11:59:15 BoogieIcfgContainer [2020-07-17 11:59:15,220 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-17 11:59:15,222 INFO L168 Benchmark]: Toolchain (without parser) took 21980.26 ms. Allocated memory was 144.2 MB in the beginning and 516.4 MB in the end (delta: 372.2 MB). Free memory was 102.8 MB in the beginning and 399.9 MB in the end (delta: -297.0 MB). Peak memory consumption was 349.3 MB. Max. memory is 7.1 GB. [2020-07-17 11:59:15,223 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 144.2 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-17 11:59:15,223 INFO L168 Benchmark]: CACSL2BoogieTranslator took 263.94 ms. Allocated memory is still 144.2 MB. Free memory was 102.6 MB in the beginning and 93.0 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. [2020-07-17 11:59:15,224 INFO L168 Benchmark]: Boogie Preprocessor took 28.49 ms. Allocated memory is still 144.2 MB. Free memory was 93.0 MB in the beginning and 91.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-07-17 11:59:15,225 INFO L168 Benchmark]: RCFGBuilder took 473.21 ms. Allocated memory was 144.2 MB in the beginning and 202.4 MB in the end (delta: 58.2 MB). Free memory was 91.6 MB in the beginning and 168.2 MB in the end (delta: -76.5 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. [2020-07-17 11:59:15,226 INFO L168 Benchmark]: TraceAbstraction took 21207.11 ms. Allocated memory was 202.4 MB in the beginning and 516.4 MB in the end (delta: 314.0 MB). Free memory was 168.2 MB in the beginning and 399.9 MB in the end (delta: -231.7 MB). Peak memory consumption was 356.4 MB. Max. memory is 7.1 GB. [2020-07-17 11:59:15,228 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 144.2 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 263.94 ms. Allocated memory is still 144.2 MB. Free memory was 102.6 MB in the beginning and 93.0 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 28.49 ms. Allocated memory is still 144.2 MB. Free memory was 93.0 MB in the beginning and 91.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 473.21 ms. Allocated memory was 144.2 MB in the beginning and 202.4 MB in the end (delta: 58.2 MB). Free memory was 91.6 MB in the beginning and 168.2 MB in the end (delta: -76.5 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 21207.11 ms. Allocated memory was 202.4 MB in the beginning and 516.4 MB in the end (delta: 314.0 MB). Free memory was 168.2 MB in the beginning and 399.9 MB in the end (delta: -231.7 MB). Peak memory consumption was 356.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 39]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 33 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 18.6s, OverallIterations: 14, TraceHistogramMax: 21, AutomataDifference: 6.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 2.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 471 SDtfs, 648 SDslu, 4444 SDs, 0 SdLazy, 4820 SolverSat, 634 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2236 GetRequests, 1921 SyntacticMatches, 14 SemanticMatches, 301 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1169 ImplicationChecksByTransitivity, 4.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=114occurred in iteration=12, 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, 14 MinimizatonAttempts, 137 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 11 LocationsWithAnnotation, 515 PreInvPairs, 756 NumberOfFragments, 119 HoareAnnotationTreeSize, 515 FomulaSimplifications, 6402 FormulaSimplificationTreeSizeReduction, 0.7s HoareSimplificationTime, 11 FomulaSimplificationsInter, 8691 FormulaSimplificationTreeSizeReductionInter, 1.6s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 7.3s InterpolantComputationTime, 2991 NumberOfCodeBlocks, 2698 NumberOfCodeBlocksAsserted, 40 NumberOfCheckSat, 2965 ConstructedInterpolants, 0 QuantifiedInterpolants, 936391 SizeOfPredicates, 54 NumberOfNonLiveVariables, 2653 ConjunctsInSsa, 209 ConjunctsInUnsatCore, 26 InterpolantComputations, 2 PerfectInterpolantSequences, 11461/14184 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...