/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/Addition01-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-86f66a4 [2020-07-07 10:56:24,738 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-07 10:56:24,741 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-07 10:56:24,760 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-07 10:56:24,760 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-07 10:56:24,762 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-07 10:56:24,764 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-07 10:56:24,776 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-07 10:56:24,778 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-07 10:56:24,780 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-07 10:56:24,781 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-07 10:56:24,784 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-07 10:56:24,784 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-07 10:56:24,785 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-07 10:56:24,786 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-07 10:56:24,789 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-07 10:56:24,791 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-07 10:56:24,792 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-07 10:56:24,794 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-07 10:56:24,799 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-07 10:56:24,803 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-07 10:56:24,804 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-07 10:56:24,806 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-07 10:56:24,807 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-07 10:56:24,810 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-07 10:56:24,823 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-07 10:56:24,824 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-07 10:56:24,825 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-07 10:56:24,826 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 [2020-07-07 10:56:24,848 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-07 10:56:24,849 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-07 10:56:24,851 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-07 10:56:24,851 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-07 10:56:24,851 INFO L138 SettingsManager]: * Use SBE=true [2020-07-07 10:56:24,852 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-07 10:56:24,852 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-07 10:56:24,852 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-07 10:56:24,852 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-07 10:56:24,853 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-07 10:56:24,854 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-07 10:56:24,854 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-07 10:56:24,854 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-07 10:56:24,855 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-07 10:56:24,855 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-07 10:56:24,855 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-07 10:56:24,855 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-07 10:56:24,855 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-07 10:56:24,856 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-07 10:56:24,856 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-07 10:56:24,856 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-07 10:56:24,856 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-07 10:56:24,857 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-07 10:56:24,857 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-07 10:56:24,857 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-07 10:56:24,857 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-07 10:56:24,857 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-07 10:56:24,858 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-07 10:56:24,858 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-07 10:56:24,858 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-07-07 10:56:25,194 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-07 10:56:25,214 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-07 10:56:25,218 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-07 10:56:25,219 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-07 10:56:25,220 INFO L275 PluginConnector]: CDTParser initialized [2020-07-07 10:56:25,221 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/Addition01-2.c [2020-07-07 10:56:25,296 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b73f85f02/798a5973c141487693be23656ec0c497/FLAG525285e7d [2020-07-07 10:56:25,769 INFO L306 CDTParser]: Found 1 translation units. [2020-07-07 10:56:25,770 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive/Addition01-2.c [2020-07-07 10:56:25,778 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b73f85f02/798a5973c141487693be23656ec0c497/FLAG525285e7d [2020-07-07 10:56:26,130 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b73f85f02/798a5973c141487693be23656ec0c497 [2020-07-07 10:56:26,140 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-07 10:56:26,142 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-07 10:56:26,143 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-07 10:56:26,143 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-07 10:56:26,147 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-07 10:56:26,148 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 10:56:26" (1/1) ... [2020-07-07 10:56:26,150 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53c26240 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 10:56:26, skipping insertion in model container [2020-07-07 10:56:26,151 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 10:56:26" (1/1) ... [2020-07-07 10:56:26,158 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-07 10:56:26,174 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-07 10:56:26,339 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 10:56:26,344 INFO L203 MainTranslator]: Completed pre-run [2020-07-07 10:56:26,362 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 10:56:26,377 INFO L208 MainTranslator]: Completed translation [2020-07-07 10:56:26,378 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 10:56:26 WrapperNode [2020-07-07 10:56:26,378 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-07 10:56:26,379 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-07 10:56:26,379 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-07 10:56:26,379 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-07 10:56:26,390 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 10:56:26" (1/1) ... [2020-07-07 10:56:26,390 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 10:56:26" (1/1) ... [2020-07-07 10:56:26,395 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 10:56:26" (1/1) ... [2020-07-07 10:56:26,395 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 10:56:26" (1/1) ... [2020-07-07 10:56:26,398 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 10:56:26" (1/1) ... [2020-07-07 10:56:26,401 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 10:56:26" (1/1) ... [2020-07-07 10:56:26,402 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 10:56:26" (1/1) ... [2020-07-07 10:56:26,403 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-07 10:56:26,404 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-07 10:56:26,404 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-07 10:56:26,404 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-07 10:56:26,405 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 10:56:26" (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 [2020-07-07 10:56:26,553 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-07 10:56:26,553 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-07 10:56:26,553 INFO L138 BoogieDeclarations]: Found implementation of procedure addition [2020-07-07 10:56:26,553 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-07 10:56:26,553 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-07 10:56:26,553 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-07 10:56:26,553 INFO L130 BoogieDeclarations]: Found specification of procedure addition [2020-07-07 10:56:26,553 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-07 10:56:26,554 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-07 10:56:26,554 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-07 10:56:26,757 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-07 10:56:26,757 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-07 10:56:26,762 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 10:56:26 BoogieIcfgContainer [2020-07-07 10:56:26,762 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-07 10:56:26,763 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-07 10:56:26,763 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-07 10:56:26,767 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-07 10:56:26,767 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.07 10:56:26" (1/3) ... [2020-07-07 10:56:26,768 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@329539e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 10:56:26, skipping insertion in model container [2020-07-07 10:56:26,768 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 10:56:26" (2/3) ... [2020-07-07 10:56:26,769 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@329539e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 10:56:26, skipping insertion in model container [2020-07-07 10:56:26,769 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 10:56:26" (3/3) ... [2020-07-07 10:56:26,771 INFO L109 eAbstractionObserver]: Analyzing ICFG Addition01-2.c [2020-07-07 10:56:26,782 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-07 10:56:26,791 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-07 10:56:26,811 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-07 10:56:26,839 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-07 10:56:26,839 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-07 10:56:26,840 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-07 10:56:26,840 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-07 10:56:26,840 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-07 10:56:26,840 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-07 10:56:26,840 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-07 10:56:26,840 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-07 10:56:26,866 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2020-07-07 10:56:26,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-07-07 10:56:26,875 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 10:56:26,876 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 10:56:26,876 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 10:56:26,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 10:56:26,883 INFO L82 PathProgramCache]: Analyzing trace with hash -854965079, now seen corresponding path program 1 times [2020-07-07 10:56:26,892 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 10:56:26,893 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176775191] [2020-07-07 10:56:26,893 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 10:56:26,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:27,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:27,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:27,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 10:56:27,233 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176775191] [2020-07-07 10:56:27,234 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 10:56:27,234 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-07 10:56:27,235 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601413226] [2020-07-07 10:56:27,239 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-07 10:56:27,239 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 10:56:27,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-07 10:56:27,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-07 10:56:27,256 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 6 states. [2020-07-07 10:56:27,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 10:56:27,451 INFO L93 Difference]: Finished difference Result 38 states and 47 transitions. [2020-07-07 10:56:27,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-07 10:56:27,454 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-07-07 10:56:27,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 10:56:27,468 INFO L225 Difference]: With dead ends: 38 [2020-07-07 10:56:27,468 INFO L226 Difference]: Without dead ends: 24 [2020-07-07 10:56:27,472 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-07-07 10:56:27,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-07-07 10:56:27,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2020-07-07 10:56:27,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-07-07 10:56:27,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 29 transitions. [2020-07-07 10:56:27,527 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 29 transitions. Word has length 15 [2020-07-07 10:56:27,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 10:56:27,528 INFO L479 AbstractCegarLoop]: Abstraction has 24 states and 29 transitions. [2020-07-07 10:56:27,528 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-07 10:56:27,529 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 29 transitions. [2020-07-07 10:56:27,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-07-07 10:56:27,531 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 10:56:27,531 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 10:56:27,532 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-07 10:56:27,532 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 10:56:27,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 10:56:27,533 INFO L82 PathProgramCache]: Analyzing trace with hash -1632999070, now seen corresponding path program 1 times [2020-07-07 10:56:27,533 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 10:56:27,534 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837245528] [2020-07-07 10:56:27,534 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 10:56:27,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:27,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:27,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:27,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 10:56:27,614 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837245528] [2020-07-07 10:56:27,615 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 10:56:27,615 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-07 10:56:27,615 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602797769] [2020-07-07 10:56:27,617 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-07 10:56:27,617 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 10:56:27,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-07 10:56:27,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-07-07 10:56:27,618 INFO L87 Difference]: Start difference. First operand 24 states and 29 transitions. Second operand 4 states. [2020-07-07 10:56:27,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 10:56:27,652 INFO L93 Difference]: Finished difference Result 34 states and 42 transitions. [2020-07-07 10:56:27,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-07 10:56:27,653 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-07-07 10:56:27,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 10:56:27,655 INFO L225 Difference]: With dead ends: 34 [2020-07-07 10:56:27,655 INFO L226 Difference]: Without dead ends: 26 [2020-07-07 10:56:27,656 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-07-07 10:56:27,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-07-07 10:56:27,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2020-07-07 10:56:27,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-07-07 10:56:27,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2020-07-07 10:56:27,666 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 17 [2020-07-07 10:56:27,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 10:56:27,666 INFO L479 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2020-07-07 10:56:27,666 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-07 10:56:27,667 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2020-07-07 10:56:27,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-07-07 10:56:27,668 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 10:56:27,668 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 10:56:27,669 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-07 10:56:27,669 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 10:56:27,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 10:56:27,669 INFO L82 PathProgramCache]: Analyzing trace with hash 1746800232, now seen corresponding path program 1 times [2020-07-07 10:56:27,670 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 10:56:27,670 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325497120] [2020-07-07 10:56:27,670 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 10:56:27,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:27,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:27,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:27,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:27,905 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-07-07 10:56:27,905 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325497120] [2020-07-07 10:56:27,906 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1296569357] [2020-07-07 10:56:27,906 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 [2020-07-07 10:56:27,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:27,946 INFO L264 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 27 conjunts are in the unsatisfiable core [2020-07-07 10:56:27,954 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 10:56:28,193 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-07-07 10:56:28,194 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 10:56:28,194 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10] total 15 [2020-07-07 10:56:28,195 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899938445] [2020-07-07 10:56:28,195 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-07-07 10:56:28,196 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 10:56:28,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-07-07 10:56:28,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2020-07-07 10:56:28,197 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand 15 states. [2020-07-07 10:56:28,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 10:56:28,487 INFO L93 Difference]: Finished difference Result 38 states and 47 transitions. [2020-07-07 10:56:28,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-07-07 10:56:28,487 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 22 [2020-07-07 10:56:28,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 10:56:28,489 INFO L225 Difference]: With dead ends: 38 [2020-07-07 10:56:28,489 INFO L226 Difference]: Without dead ends: 32 [2020-07-07 10:56:28,490 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2020-07-07 10:56:28,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-07-07 10:56:28,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 25. [2020-07-07 10:56:28,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-07-07 10:56:28,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2020-07-07 10:56:28,498 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 22 [2020-07-07 10:56:28,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 10:56:28,498 INFO L479 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2020-07-07 10:56:28,498 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-07-07 10:56:28,499 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2020-07-07 10:56:28,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-07-07 10:56:28,500 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 10:56:28,500 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] [2020-07-07 10:56:28,714 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-07-07 10:56:28,715 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 10:56:28,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 10:56:28,716 INFO L82 PathProgramCache]: Analyzing trace with hash -1365148867, now seen corresponding path program 1 times [2020-07-07 10:56:28,716 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 10:56:28,717 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490102782] [2020-07-07 10:56:28,718 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 10:56:28,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:28,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:28,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:28,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:28,850 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-07-07 10:56:28,852 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490102782] [2020-07-07 10:56:28,852 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1435851636] [2020-07-07 10:56:28,852 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 [2020-07-07 10:56:28,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:28,892 INFO L264 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-07 10:56:28,894 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 10:56:28,909 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-07-07 10:56:28,910 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 10:56:28,910 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 7 [2020-07-07 10:56:28,910 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78224383] [2020-07-07 10:56:28,911 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-07 10:56:28,911 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 10:56:28,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-07 10:56:28,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-07-07 10:56:28,912 INFO L87 Difference]: Start difference. First operand 25 states and 29 transitions. Second operand 7 states. [2020-07-07 10:56:28,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 10:56:28,968 INFO L93 Difference]: Finished difference Result 31 states and 36 transitions. [2020-07-07 10:56:28,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-07 10:56:28,968 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-07-07 10:56:28,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 10:56:28,970 INFO L225 Difference]: With dead ends: 31 [2020-07-07 10:56:28,970 INFO L226 Difference]: Without dead ends: 27 [2020-07-07 10:56:28,971 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-07-07 10:56:28,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-07-07 10:56:28,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-07-07 10:56:28,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-07-07 10:56:28,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 32 transitions. [2020-07-07 10:56:28,977 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 32 transitions. Word has length 23 [2020-07-07 10:56:28,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 10:56:28,978 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 32 transitions. [2020-07-07 10:56:28,978 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-07 10:56:28,978 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 32 transitions. [2020-07-07 10:56:28,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-07-07 10:56:28,980 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 10:56:28,980 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 10:56:29,193 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 10:56:29,194 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 10:56:29,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 10:56:29,194 INFO L82 PathProgramCache]: Analyzing trace with hash 1459427924, now seen corresponding path program 1 times [2020-07-07 10:56:29,195 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 10:56:29,195 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973515730] [2020-07-07 10:56:29,195 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 10:56:29,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:29,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:29,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:29,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:29,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:29,266 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-07-07 10:56:29,266 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973515730] [2020-07-07 10:56:29,267 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1032050571] [2020-07-07 10:56:29,267 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 [2020-07-07 10:56:29,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:29,298 INFO L264 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-07 10:56:29,299 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 10:56:29,331 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-07-07 10:56:29,331 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 10:56:29,332 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 7 [2020-07-07 10:56:29,332 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446951202] [2020-07-07 10:56:29,333 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-07 10:56:29,333 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 10:56:29,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-07 10:56:29,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-07-07 10:56:29,334 INFO L87 Difference]: Start difference. First operand 27 states and 32 transitions. Second operand 7 states. [2020-07-07 10:56:29,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 10:56:29,394 INFO L93 Difference]: Finished difference Result 32 states and 39 transitions. [2020-07-07 10:56:29,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-07 10:56:29,395 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 30 [2020-07-07 10:56:29,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 10:56:29,396 INFO L225 Difference]: With dead ends: 32 [2020-07-07 10:56:29,396 INFO L226 Difference]: Without dead ends: 0 [2020-07-07 10:56:29,398 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-07-07 10:56:29,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-07 10:56:29,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-07 10:56:29,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-07 10:56:29,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-07 10:56:29,399 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 30 [2020-07-07 10:56:29,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 10:56:29,400 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-07 10:56:29,400 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-07 10:56:29,400 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-07 10:56:29,400 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-07 10:56:29,608 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 10:56:29,613 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-07 10:56:29,676 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-07-07 10:56:29,676 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-07 10:56:29,676 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-07 10:56:29,677 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-07 10:56:29,677 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-07 10:56:29,677 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-07 10:56:29,677 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 43) no Hoare annotation was computed. [2020-07-07 10:56:29,677 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 26 45) the Hoare annotation is: true [2020-07-07 10:56:29,678 INFO L268 CegarLoopResult]: For program point L28(lines 28 32) no Hoare annotation was computed. [2020-07-07 10:56:29,678 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 26 45) no Hoare annotation was computed. [2020-07-07 10:56:29,678 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 26 45) no Hoare annotation was computed. [2020-07-07 10:56:29,678 INFO L268 CegarLoopResult]: For program point L43(line 43) no Hoare annotation was computed. [2020-07-07 10:56:29,678 INFO L268 CegarLoopResult]: For program point L40(lines 40 44) no Hoare annotation was computed. [2020-07-07 10:56:29,679 INFO L264 CegarLoopResult]: At program point L39(line 39) the Hoare annotation is: (<= 0 main_~n~0) [2020-07-07 10:56:29,679 INFO L268 CegarLoopResult]: For program point L39-1(line 39) no Hoare annotation was computed. [2020-07-07 10:56:29,679 INFO L268 CegarLoopResult]: For program point L34(lines 34 38) no Hoare annotation was computed. [2020-07-07 10:56:29,679 INFO L268 CegarLoopResult]: For program point additionFINAL(lines 13 23) no Hoare annotation was computed. [2020-07-07 10:56:29,679 INFO L264 CegarLoopResult]: At program point L21(line 21) the Hoare annotation is: (and (= |addition_#in~n| addition_~n) (<= (+ addition_~n 1) 0) (= |addition_#in~m| addition_~m)) [2020-07-07 10:56:29,680 INFO L268 CegarLoopResult]: For program point L20(lines 20 22) no Hoare annotation was computed. [2020-07-07 10:56:29,680 INFO L268 CegarLoopResult]: For program point L21-1(line 21) no Hoare annotation was computed. [2020-07-07 10:56:29,680 INFO L264 CegarLoopResult]: At program point L18(line 18) the Hoare annotation is: (and (= |addition_#in~n| addition_~n) (= |addition_#in~m| addition_~m) (< 0 addition_~n)) [2020-07-07 10:56:29,680 INFO L268 CegarLoopResult]: For program point L17(lines 17 19) no Hoare annotation was computed. [2020-07-07 10:56:29,680 INFO L268 CegarLoopResult]: For program point L18-1(line 18) no Hoare annotation was computed. [2020-07-07 10:56:29,681 INFO L271 CegarLoopResult]: At program point additionENTRY(lines 13 23) the Hoare annotation is: true [2020-07-07 10:56:29,681 INFO L268 CegarLoopResult]: For program point L14(lines 14 16) no Hoare annotation was computed. [2020-07-07 10:56:29,681 INFO L268 CegarLoopResult]: For program point additionEXIT(lines 13 23) no Hoare annotation was computed. [2020-07-07 10:56:29,687 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.07 10:56:29 BoogieIcfgContainer [2020-07-07 10:56:29,687 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-07 10:56:29,690 INFO L168 Benchmark]: Toolchain (without parser) took 3547.59 ms. Allocated memory was 147.3 MB in the beginning and 233.8 MB in the end (delta: 86.5 MB). Free memory was 104.4 MB in the beginning and 88.3 MB in the end (delta: 16.1 MB). Peak memory consumption was 102.6 MB. Max. memory is 7.1 GB. [2020-07-07 10:56:29,691 INFO L168 Benchmark]: CDTParser took 0.49 ms. Allocated memory is still 147.3 MB. Free memory was 122.3 MB in the beginning and 122.1 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-07 10:56:29,692 INFO L168 Benchmark]: CACSL2BoogieTranslator took 235.46 ms. Allocated memory is still 147.3 MB. Free memory was 104.2 MB in the beginning and 94.7 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. [2020-07-07 10:56:29,693 INFO L168 Benchmark]: Boogie Preprocessor took 24.71 ms. Allocated memory is still 147.3 MB. Free memory was 94.7 MB in the beginning and 93.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-07-07 10:56:29,694 INFO L168 Benchmark]: RCFGBuilder took 358.12 ms. Allocated memory was 147.3 MB in the beginning and 203.4 MB in the end (delta: 56.1 MB). Free memory was 93.3 MB in the beginning and 170.5 MB in the end (delta: -77.2 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. [2020-07-07 10:56:29,695 INFO L168 Benchmark]: TraceAbstraction took 2924.39 ms. Allocated memory was 203.4 MB in the beginning and 233.8 MB in the end (delta: 30.4 MB). Free memory was 169.8 MB in the beginning and 89.6 MB in the end (delta: 80.2 MB). Peak memory consumption was 110.7 MB. Max. memory is 7.1 GB. [2020-07-07 10:56:29,699 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.49 ms. Allocated memory is still 147.3 MB. Free memory was 122.3 MB in the beginning and 122.1 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 235.46 ms. Allocated memory is still 147.3 MB. Free memory was 104.2 MB in the beginning and 94.7 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 24.71 ms. Allocated memory is still 147.3 MB. Free memory was 94.7 MB in the beginning and 93.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 358.12 ms. Allocated memory was 147.3 MB in the beginning and 203.4 MB in the end (delta: 56.1 MB). Free memory was 93.3 MB in the beginning and 170.5 MB in the end (delta: -77.2 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2924.39 ms. Allocated memory was 203.4 MB in the beginning and 233.8 MB in the end (delta: 30.4 MB). Free memory was 169.8 MB in the beginning and 89.6 MB in the end (delta: 80.2 MB). Peak memory consumption was 110.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 43]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 26 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.7s, OverallIterations: 5, TraceHistogramMax: 3, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 101 SDtfs, 56 SDslu, 256 SDs, 0 SdLazy, 329 SolverSat, 18 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 136 GetRequests, 99 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 9 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 14 PreInvPairs, 14 NumberOfFragments, 30 HoareAnnotationTreeSize, 14 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 14 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 182 NumberOfCodeBlocks, 182 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 174 ConstructedInterpolants, 0 QuantifiedInterpolants, 11108 SizeOfPredicates, 11 NumberOfNonLiveVariables, 213 ConjunctsInSsa, 35 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 33/42 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...