/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/Ackermann03.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-72570d3 [2020-08-22 16:18:25,884 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 16:18:25,887 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 16:18:25,911 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 16:18:25,912 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 16:18:25,913 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 16:18:25,914 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 16:18:25,916 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 16:18:25,918 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 16:18:25,919 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 16:18:25,920 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 16:18:25,921 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 16:18:25,921 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 16:18:25,922 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 16:18:25,923 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 16:18:25,925 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 16:18:25,925 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 16:18:25,926 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 16:18:25,928 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 16:18:25,930 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 16:18:25,931 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 16:18:25,933 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 16:18:25,934 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 16:18:25,934 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 16:18:25,937 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-22 16:18:25,944 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 16:18:25,945 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 16:18:25,946 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 16:18:25,947 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 [2020-08-22 16:18:25,993 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 16:18:25,993 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 16:18:25,994 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 16:18:25,995 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 16:18:25,995 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 16:18:25,995 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 16:18:25,995 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 16:18:25,995 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 16:18:25,996 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 16:18:25,996 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 16:18:25,996 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 16:18:25,996 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 16:18:25,996 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 16:18:25,997 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 16:18:25,997 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 16:18:25,997 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 16:18:25,997 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 16:18:25,997 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 16:18:25,998 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 16:18:26,001 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 16:18:26,001 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 16:18:26,001 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 16:18:26,001 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 16:18:26,002 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 16:18:26,002 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 16:18:26,002 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 16:18:26,002 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 16:18:26,002 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 16:18:26,003 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 16:18:26,003 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-08-22 16:18:26,331 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 16:18:26,348 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 16:18:26,353 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 16:18:26,355 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 16:18:26,356 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 16:18:26,356 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/Ackermann03.c [2020-08-22 16:18:26,414 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bc44a556e/34d8593ebdcd4856bbe7101c326a9db3/FLAGe7e50cbb8 [2020-08-22 16:18:26,835 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 16:18:26,835 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive/Ackermann03.c [2020-08-22 16:18:26,840 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bc44a556e/34d8593ebdcd4856bbe7101c326a9db3/FLAGe7e50cbb8 [2020-08-22 16:18:27,284 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bc44a556e/34d8593ebdcd4856bbe7101c326a9db3 [2020-08-22 16:18:27,294 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 16:18:27,296 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 16:18:27,297 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 16:18:27,297 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 16:18:27,300 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 16:18:27,301 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 04:18:27" (1/1) ... [2020-08-22 16:18:27,304 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66ced5bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:18:27, skipping insertion in model container [2020-08-22 16:18:27,304 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 04:18:27" (1/1) ... [2020-08-22 16:18:27,312 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 16:18:27,332 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 16:18:27,500 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 16:18:27,503 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 16:18:27,521 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 16:18:27,535 INFO L208 MainTranslator]: Completed translation [2020-08-22 16:18:27,535 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:18:27 WrapperNode [2020-08-22 16:18:27,536 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 16:18:27,536 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 16:18:27,536 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 16:18:27,537 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 16:18:27,550 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:18:27" (1/1) ... [2020-08-22 16:18:27,550 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:18:27" (1/1) ... [2020-08-22 16:18:27,634 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:18:27" (1/1) ... [2020-08-22 16:18:27,634 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:18:27" (1/1) ... [2020-08-22 16:18:27,643 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:18:27" (1/1) ... [2020-08-22 16:18:27,646 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:18:27" (1/1) ... [2020-08-22 16:18:27,647 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:18:27" (1/1) ... [2020-08-22 16:18:27,654 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 16:18:27,654 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 16:18:27,655 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 16:18:27,655 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 16:18:27,656 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:18:27" (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 [2020-08-22 16:18:27,722 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 16:18:27,722 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 16:18:27,722 INFO L138 BoogieDeclarations]: Found implementation of procedure ackermann [2020-08-22 16:18:27,723 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 16:18:27,723 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 16:18:27,723 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 16:18:27,723 INFO L130 BoogieDeclarations]: Found specification of procedure ackermann [2020-08-22 16:18:27,723 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 16:18:27,723 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 16:18:27,723 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 16:18:27,937 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 16:18:27,938 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-22 16:18:27,943 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 04:18:27 BoogieIcfgContainer [2020-08-22 16:18:27,944 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 16:18:27,948 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 16:18:27,948 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 16:18:27,953 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 16:18:27,953 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 04:18:27" (1/3) ... [2020-08-22 16:18:27,954 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43e34d28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 04:18:27, skipping insertion in model container [2020-08-22 16:18:27,955 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:18:27" (2/3) ... [2020-08-22 16:18:27,956 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43e34d28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 04:18:27, skipping insertion in model container [2020-08-22 16:18:27,956 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 04:18:27" (3/3) ... [2020-08-22 16:18:27,958 INFO L109 eAbstractionObserver]: Analyzing ICFG Ackermann03.c [2020-08-22 16:18:27,988 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-08-22 16:18:27,999 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 16:18:28,033 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 16:18:28,055 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 16:18:28,055 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 16:18:28,056 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-08-22 16:18:28,056 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 16:18:28,056 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 16:18:28,057 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 16:18:28,057 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 16:18:28,057 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 16:18:28,075 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2020-08-22 16:18:28,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-08-22 16:18:28,082 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:18:28,084 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:18:28,084 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:18:28,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:18:28,091 INFO L82 PathProgramCache]: Analyzing trace with hash -1796234678, now seen corresponding path program 1 times [2020-08-22 16:18:28,098 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:18:28,099 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656743157] [2020-08-22 16:18:28,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:18:28,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:28,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:18:28,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:28,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 16:18:28,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:28,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 16:18:28,317 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656743157] [2020-08-22 16:18:28,318 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 16:18:28,319 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 16:18:28,320 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253113146] [2020-08-22 16:18:28,325 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 16:18:28,325 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:18:28,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 16:18:28,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 16:18:28,340 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 5 states. [2020-08-22 16:18:28,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:18:28,501 INFO L93 Difference]: Finished difference Result 55 states and 77 transitions. [2020-08-22 16:18:28,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 16:18:28,503 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-08-22 16:18:28,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:18:28,515 INFO L225 Difference]: With dead ends: 55 [2020-08-22 16:18:28,515 INFO L226 Difference]: Without dead ends: 28 [2020-08-22 16:18:28,520 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 [2020-08-22 16:18:28,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-08-22 16:18:28,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-08-22 16:18:28,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-08-22 16:18:28,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 35 transitions. [2020-08-22 16:18:28,566 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 35 transitions. Word has length 15 [2020-08-22 16:18:28,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:18:28,567 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 35 transitions. [2020-08-22 16:18:28,567 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 16:18:28,567 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 35 transitions. [2020-08-22 16:18:28,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-08-22 16:18:28,571 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:18:28,571 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] [2020-08-22 16:18:28,572 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 16:18:28,572 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:18:28,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:18:28,574 INFO L82 PathProgramCache]: Analyzing trace with hash -895156504, now seen corresponding path program 1 times [2020-08-22 16:18:28,574 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:18:28,575 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935422226] [2020-08-22 16:18:28,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:18:28,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:28,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:18:28,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:28,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 16:18:28,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:28,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:18:28,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:28,714 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-08-22 16:18:28,715 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935422226] [2020-08-22 16:18:28,715 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1793338540] [2020-08-22 16:18:28,716 INFO L95 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 [2020-08-22 16:18:28,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:28,766 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 4 conjunts are in the unsatisfiable core [2020-08-22 16:18:28,774 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 16:18:28,880 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-22 16:18:28,881 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-08-22 16:18:28,881 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2020-08-22 16:18:28,882 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121907856] [2020-08-22 16:18:28,883 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 16:18:28,884 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:18:28,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 16:18:28,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-08-22 16:18:28,885 INFO L87 Difference]: Start difference. First operand 28 states and 35 transitions. Second operand 9 states. [2020-08-22 16:18:29,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:18:29,224 INFO L93 Difference]: Finished difference Result 69 states and 117 transitions. [2020-08-22 16:18:29,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-22 16:18:29,224 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 22 [2020-08-22 16:18:29,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:18:29,228 INFO L225 Difference]: With dead ends: 69 [2020-08-22 16:18:29,228 INFO L226 Difference]: Without dead ends: 43 [2020-08-22 16:18:29,231 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2020-08-22 16:18:29,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-08-22 16:18:29,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2020-08-22 16:18:29,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-08-22 16:18:29,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 65 transitions. [2020-08-22 16:18:29,246 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 65 transitions. Word has length 22 [2020-08-22 16:18:29,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:18:29,247 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 65 transitions. [2020-08-22 16:18:29,247 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 16:18:29,247 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 65 transitions. [2020-08-22 16:18:29,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-08-22 16:18:29,251 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:18:29,251 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 5, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:18:29,461 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-08-22 16:18:29,461 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:18:29,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:18:29,462 INFO L82 PathProgramCache]: Analyzing trace with hash -1732137516, now seen corresponding path program 1 times [2020-08-22 16:18:29,462 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:18:29,462 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665615621] [2020-08-22 16:18:29,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:18:29,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:29,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:18:29,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:29,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 16:18:29,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:29,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:18:29,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:29,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:18:29,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:29,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:18:29,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:29,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:18:29,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:29,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 16:18:29,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:29,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-22 16:18:29,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:29,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:18:29,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:29,911 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 54 proven. 29 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2020-08-22 16:18:29,911 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665615621] [2020-08-22 16:18:29,912 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1451616827] [2020-08-22 16:18:29,912 INFO L95 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 [2020-08-22 16:18:29,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:29,961 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 6 conjunts are in the unsatisfiable core [2020-08-22 16:18:29,965 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 16:18:30,066 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 24 proven. 28 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2020-08-22 16:18:30,067 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-08-22 16:18:30,067 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 6] total 18 [2020-08-22 16:18:30,068 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697711507] [2020-08-22 16:18:30,069 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-08-22 16:18:30,069 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:18:30,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-08-22 16:18:30,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2020-08-22 16:18:30,070 INFO L87 Difference]: Start difference. First operand 43 states and 65 transitions. Second operand 18 states. [2020-08-22 16:18:31,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:18:31,461 INFO L93 Difference]: Finished difference Result 236 states and 754 transitions. [2020-08-22 16:18:31,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-08-22 16:18:31,462 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 62 [2020-08-22 16:18:31,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:18:31,477 INFO L225 Difference]: With dead ends: 236 [2020-08-22 16:18:31,477 INFO L226 Difference]: Without dead ends: 179 [2020-08-22 16:18:31,483 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 553 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=527, Invalid=2125, Unknown=0, NotChecked=0, Total=2652 [2020-08-22 16:18:31,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2020-08-22 16:18:31,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 135. [2020-08-22 16:18:31,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2020-08-22 16:18:31,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 306 transitions. [2020-08-22 16:18:31,539 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 306 transitions. Word has length 62 [2020-08-22 16:18:31,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:18:31,540 INFO L479 AbstractCegarLoop]: Abstraction has 135 states and 306 transitions. [2020-08-22 16:18:31,540 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-08-22 16:18:31,540 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 306 transitions. [2020-08-22 16:18:31,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-08-22 16:18:31,553 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:18:31,554 INFO L422 BasicCegarLoop]: trace histogram [22, 22, 14, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:18:31,767 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 16:18:31,768 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:18:31,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:18:31,769 INFO L82 PathProgramCache]: Analyzing trace with hash 658170795, now seen corresponding path program 2 times [2020-08-22 16:18:31,769 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:18:31,770 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349109100] [2020-08-22 16:18:31,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:18:31,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:31,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:18:31,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:31,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 16:18:31,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:31,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:18:31,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:31,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:18:31,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:31,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:18:31,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:31,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:18:31,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:31,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:18:31,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:31,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 16:18:31,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:31,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:18:31,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:32,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 16:18:32,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:32,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:18:32,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:32,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-22 16:18:32,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:32,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:18:32,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:32,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:18:32,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:32,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 16:18:32,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:32,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:18:32,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:32,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-08-22 16:18:32,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:32,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:18:32,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:32,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:18:32,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:32,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 16:18:32,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:32,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:18:32,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:32,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:18:32,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:32,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 16:18:32,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:32,189 INFO L134 CoverageAnalysis]: Checked inductivity of 1141 backedges. 166 proven. 90 refuted. 0 times theorem prover too weak. 885 trivial. 0 not checked. [2020-08-22 16:18:32,191 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349109100] [2020-08-22 16:18:32,191 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1388410525] [2020-08-22 16:18:32,192 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 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 [2020-08-22 16:18:32,289 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-08-22 16:18:32,290 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-08-22 16:18:32,293 INFO L263 TraceCheckSpWp]: Trace formula consists of 455 conjuncts, 15 conjunts are in the unsatisfiable core [2020-08-22 16:18:32,320 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 16:18:32,514 INFO L134 CoverageAnalysis]: Checked inductivity of 1141 backedges. 580 proven. 29 refuted. 0 times theorem prover too weak. 532 trivial. 0 not checked. [2020-08-22 16:18:32,514 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-08-22 16:18:32,515 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9] total 12 [2020-08-22 16:18:32,515 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731019738] [2020-08-22 16:18:32,519 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-22 16:18:32,523 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:18:32,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-22 16:18:32,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2020-08-22 16:18:32,524 INFO L87 Difference]: Start difference. First operand 135 states and 306 transitions. Second operand 12 states. [2020-08-22 16:18:32,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:18:32,769 INFO L93 Difference]: Finished difference Result 211 states and 519 transitions. [2020-08-22 16:18:32,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-22 16:18:32,769 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 155 [2020-08-22 16:18:32,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:18:32,772 INFO L225 Difference]: With dead ends: 211 [2020-08-22 16:18:32,772 INFO L226 Difference]: Without dead ends: 80 [2020-08-22 16:18:32,775 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2020-08-22 16:18:32,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-08-22 16:18:32,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 77. [2020-08-22 16:18:32,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-08-22 16:18:32,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 115 transitions. [2020-08-22 16:18:32,788 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 115 transitions. Word has length 155 [2020-08-22 16:18:32,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:18:32,789 INFO L479 AbstractCegarLoop]: Abstraction has 77 states and 115 transitions. [2020-08-22 16:18:32,789 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-22 16:18:32,789 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 115 transitions. [2020-08-22 16:18:32,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2020-08-22 16:18:32,792 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:18:32,792 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 16, 11, 10, 10, 10, 10, 10, 10, 10, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:18:33,007 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 16:18:33,008 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:18:33,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:18:33,009 INFO L82 PathProgramCache]: Analyzing trace with hash -3938454, now seen corresponding path program 3 times [2020-08-22 16:18:33,009 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:18:33,010 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353090870] [2020-08-22 16:18:33,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:18:33,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:33,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:18:33,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:33,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 16:18:33,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:33,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:18:33,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:33,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:18:33,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:33,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:18:33,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:33,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:18:33,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:33,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:18:33,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:33,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 16:18:33,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:33,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-22 16:18:33,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:33,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:18:33,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:33,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:18:33,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:33,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:18:33,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:33,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 16:18:33,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:33,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-22 16:18:33,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:33,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-08-22 16:18:33,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:33,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:18:33,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:33,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:18:33,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:33,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:18:33,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:33,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:18:33,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:33,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:18:33,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:33,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 16:18:33,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:33,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-22 16:18:33,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:33,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:18:33,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:33,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:18:33,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:33,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:18:33,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:33,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 16:18:33,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:33,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-22 16:18:33,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:33,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-08-22 16:18:33,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:33,544 INFO L134 CoverageAnalysis]: Checked inductivity of 1734 backedges. 172 proven. 544 refuted. 0 times theorem prover too weak. 1018 trivial. 0 not checked. [2020-08-22 16:18:33,545 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353090870] [2020-08-22 16:18:33,545 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [110266884] [2020-08-22 16:18:33,545 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 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 [2020-08-22 16:18:33,623 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2020-08-22 16:18:33,623 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-08-22 16:18:33,626 INFO L263 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 21 conjunts are in the unsatisfiable core [2020-08-22 16:18:33,632 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 16:18:33,820 INFO L134 CoverageAnalysis]: Checked inductivity of 1734 backedges. 697 proven. 114 refuted. 0 times theorem prover too weak. 923 trivial. 0 not checked. [2020-08-22 16:18:33,821 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-08-22 16:18:33,821 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 14] total 18 [2020-08-22 16:18:33,821 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144276422] [2020-08-22 16:18:33,823 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-08-22 16:18:33,823 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:18:33,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-08-22 16:18:33,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2020-08-22 16:18:33,824 INFO L87 Difference]: Start difference. First operand 77 states and 115 transitions. Second operand 18 states. [2020-08-22 16:18:34,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:18:34,621 INFO L93 Difference]: Finished difference Result 171 states and 320 transitions. [2020-08-22 16:18:34,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-08-22 16:18:34,623 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 187 [2020-08-22 16:18:34,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:18:34,626 INFO L225 Difference]: With dead ends: 171 [2020-08-22 16:18:34,626 INFO L226 Difference]: Without dead ends: 99 [2020-08-22 16:18:34,630 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 243 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 364 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=360, Invalid=1446, Unknown=0, NotChecked=0, Total=1806 [2020-08-22 16:18:34,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-08-22 16:18:34,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 89. [2020-08-22 16:18:34,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-08-22 16:18:34,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 138 transitions. [2020-08-22 16:18:34,663 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 138 transitions. Word has length 187 [2020-08-22 16:18:34,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:18:34,668 INFO L479 AbstractCegarLoop]: Abstraction has 89 states and 138 transitions. [2020-08-22 16:18:34,668 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-08-22 16:18:34,668 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 138 transitions. [2020-08-22 16:18:34,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-08-22 16:18:34,673 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:18:34,673 INFO L422 BasicCegarLoop]: trace histogram [23, 23, 13, 10, 9, 9, 9, 9, 9, 9, 9, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:18:34,891 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 16:18:34,892 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:18:34,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:18:34,893 INFO L82 PathProgramCache]: Analyzing trace with hash -1434361927, now seen corresponding path program 4 times [2020-08-22 16:18:34,893 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:18:34,893 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048212574] [2020-08-22 16:18:34,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:18:34,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:34,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:18:34,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:34,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 16:18:35,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:35,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:18:35,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:35,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:18:35,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:35,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:18:35,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:35,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:18:35,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:35,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:18:35,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:35,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 16:18:35,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:35,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-22 16:18:35,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:35,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:18:35,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:35,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:18:35,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:35,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:18:35,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:35,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:18:35,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:35,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 16:18:35,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:35,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-22 16:18:35,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:35,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-22 16:18:35,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:35,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-08-22 16:18:35,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:35,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:18:35,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:35,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:18:35,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:35,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:18:35,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:35,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:18:35,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:35,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 16:18:35,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:35,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-22 16:18:35,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:35,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-22 16:18:35,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:35,463 INFO L134 CoverageAnalysis]: Checked inductivity of 1246 backedges. 446 proven. 274 refuted. 0 times theorem prover too weak. 526 trivial. 0 not checked. [2020-08-22 16:18:35,463 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048212574] [2020-08-22 16:18:35,464 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1792719715] [2020-08-22 16:18:35,464 INFO L93 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 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 [2020-08-22 16:18:35,566 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-08-22 16:18:35,566 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-08-22 16:18:35,569 INFO L263 TraceCheckSpWp]: Trace formula consists of 471 conjuncts, 35 conjunts are in the unsatisfiable core [2020-08-22 16:18:35,574 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 16:18:35,704 INFO L134 CoverageAnalysis]: Checked inductivity of 1246 backedges. 421 proven. 286 refuted. 0 times theorem prover too weak. 539 trivial. 0 not checked. [2020-08-22 16:18:35,705 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-08-22 16:18:35,705 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 20] total 24 [2020-08-22 16:18:35,706 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285147780] [2020-08-22 16:18:35,707 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-08-22 16:18:35,707 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:18:35,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-08-22 16:18:35,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=473, Unknown=0, NotChecked=0, Total=552 [2020-08-22 16:18:35,709 INFO L87 Difference]: Start difference. First operand 89 states and 138 transitions. Second operand 24 states. [2020-08-22 16:18:37,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:18:37,286 INFO L93 Difference]: Finished difference Result 223 states and 443 transitions. [2020-08-22 16:18:37,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2020-08-22 16:18:37,287 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 160 [2020-08-22 16:18:37,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:18:37,292 INFO L225 Difference]: With dead ends: 223 [2020-08-22 16:18:37,292 INFO L226 Difference]: Without dead ends: 142 [2020-08-22 16:18:37,296 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1114 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=784, Invalid=3908, Unknown=0, NotChecked=0, Total=4692 [2020-08-22 16:18:37,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2020-08-22 16:18:37,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 104. [2020-08-22 16:18:37,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-08-22 16:18:37,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 174 transitions. [2020-08-22 16:18:37,343 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 174 transitions. Word has length 160 [2020-08-22 16:18:37,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:18:37,344 INFO L479 AbstractCegarLoop]: Abstraction has 104 states and 174 transitions. [2020-08-22 16:18:37,344 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-08-22 16:18:37,344 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 174 transitions. [2020-08-22 16:18:37,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-08-22 16:18:37,350 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:18:37,350 INFO L422 BasicCegarLoop]: trace histogram [25, 25, 14, 11, 10, 10, 10, 10, 10, 10, 10, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:18:37,565 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2020-08-22 16:18:37,566 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:18:37,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:18:37,566 INFO L82 PathProgramCache]: Analyzing trace with hash -66876812, now seen corresponding path program 5 times [2020-08-22 16:18:37,567 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:18:37,567 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562414124] [2020-08-22 16:18:37,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:18:37,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:37,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:18:37,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:37,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 16:18:37,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:37,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:18:37,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:37,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:18:37,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:37,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:18:37,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:37,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:18:37,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:37,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:18:37,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:37,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 16:18:37,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:37,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-22 16:18:37,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:37,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:18:37,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:37,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:18:37,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:37,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:18:37,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:37,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:18:37,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:37,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 16:18:37,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:38,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-22 16:18:38,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:38,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-22 16:18:38,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:38,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-08-22 16:18:38,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:38,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:18:38,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:38,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:18:38,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:38,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:18:38,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:38,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:18:38,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:38,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:18:38,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:38,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 16:18:38,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:38,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-22 16:18:38,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:38,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-22 16:18:38,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:38,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-22 16:18:38,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:38,270 INFO L134 CoverageAnalysis]: Checked inductivity of 1483 backedges. 503 proven. 360 refuted. 0 times theorem prover too weak. 620 trivial. 0 not checked. [2020-08-22 16:18:38,271 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562414124] [2020-08-22 16:18:38,271 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [213336654] [2020-08-22 16:18:38,271 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 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 [2020-08-22 16:18:38,352 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) [2020-08-22 16:18:38,353 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-08-22 16:18:38,355 INFO L263 TraceCheckSpWp]: Trace formula consists of 436 conjuncts, 37 conjunts are in the unsatisfiable core [2020-08-22 16:18:38,360 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 16:18:38,517 INFO L134 CoverageAnalysis]: Checked inductivity of 1483 backedges. 477 proven. 372 refuted. 0 times theorem prover too weak. 634 trivial. 0 not checked. [2020-08-22 16:18:38,518 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-08-22 16:18:38,518 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 21] total 25 [2020-08-22 16:18:38,518 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227985740] [2020-08-22 16:18:38,519 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-08-22 16:18:38,520 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:18:38,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-08-22 16:18:38,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=514, Unknown=0, NotChecked=0, Total=600 [2020-08-22 16:18:38,521 INFO L87 Difference]: Start difference. First operand 104 states and 174 transitions. Second operand 25 states. [2020-08-22 16:18:40,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:18:40,349 INFO L93 Difference]: Finished difference Result 254 states and 545 transitions. [2020-08-22 16:18:40,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2020-08-22 16:18:40,351 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 173 [2020-08-22 16:18:40,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:18:40,356 INFO L225 Difference]: With dead ends: 254 [2020-08-22 16:18:40,356 INFO L226 Difference]: Without dead ends: 158 [2020-08-22 16:18:40,362 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 227 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1368 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=929, Invalid=4621, Unknown=0, NotChecked=0, Total=5550 [2020-08-22 16:18:40,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-08-22 16:18:40,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 124. [2020-08-22 16:18:40,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-08-22 16:18:40,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 223 transitions. [2020-08-22 16:18:40,394 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 223 transitions. Word has length 173 [2020-08-22 16:18:40,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:18:40,395 INFO L479 AbstractCegarLoop]: Abstraction has 124 states and 223 transitions. [2020-08-22 16:18:40,395 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-08-22 16:18:40,395 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 223 transitions. [2020-08-22 16:18:40,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2020-08-22 16:18:40,398 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:18:40,399 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 15, 12, 11, 11, 11, 11, 11, 11, 11, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:18:40,612 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 16:18:40,612 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:18:40,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:18:40,613 INFO L82 PathProgramCache]: Analyzing trace with hash -1028004289, now seen corresponding path program 6 times [2020-08-22 16:18:40,613 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:18:40,613 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455799476] [2020-08-22 16:18:40,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:18:40,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:40,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:18:40,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:40,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 16:18:40,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:40,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:18:40,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:40,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:18:40,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:40,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:18:40,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:40,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:18:40,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:40,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:18:40,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:40,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 16:18:40,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:40,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-22 16:18:40,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:40,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:18:40,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:40,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:18:40,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:40,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:18:40,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:40,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:18:40,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:40,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 16:18:40,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:40,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-22 16:18:40,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:40,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-22 16:18:40,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:40,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-08-22 16:18:40,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:40,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:18:40,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:40,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:18:40,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:41,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:18:41,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:41,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:18:41,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:41,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:18:41,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:41,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:18:41,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:41,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 16:18:41,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:41,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-22 16:18:41,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:41,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-22 16:18:41,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:41,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-22 16:18:41,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:41,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-08-22 16:18:41,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:41,481 INFO L134 CoverageAnalysis]: Checked inductivity of 1741 backedges. 600 proven. 156 refuted. 0 times theorem prover too weak. 985 trivial. 0 not checked. [2020-08-22 16:18:41,482 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455799476] [2020-08-22 16:18:41,482 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [658723386] [2020-08-22 16:18:41,482 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE 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 [2020-08-22 16:18:41,588 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 18 check-sat command(s) [2020-08-22 16:18:41,588 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-08-22 16:18:41,591 INFO L263 TraceCheckSpWp]: Trace formula consists of 547 conjuncts, 79 conjunts are in the unsatisfiable core [2020-08-22 16:18:41,594 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 16:18:41,847 INFO L134 CoverageAnalysis]: Checked inductivity of 1741 backedges. 583 proven. 158 refuted. 0 times theorem prover too weak. 1000 trivial. 0 not checked. [2020-08-22 16:18:41,847 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-08-22 16:18:41,848 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 23] total 25 [2020-08-22 16:18:41,848 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791398589] [2020-08-22 16:18:41,849 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-08-22 16:18:41,849 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:18:41,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-08-22 16:18:41,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=550, Unknown=0, NotChecked=0, Total=600 [2020-08-22 16:18:41,850 INFO L87 Difference]: Start difference. First operand 124 states and 223 transitions. Second operand 25 states. [2020-08-22 16:18:44,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:18:44,668 INFO L93 Difference]: Finished difference Result 349 states and 752 transitions. [2020-08-22 16:18:44,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2020-08-22 16:18:44,669 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 186 [2020-08-22 16:18:44,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:18:44,680 INFO L225 Difference]: With dead ends: 349 [2020-08-22 16:18:44,681 INFO L226 Difference]: Without dead ends: 337 [2020-08-22 16:18:44,688 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 319 GetRequests, 240 SyntacticMatches, 7 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1132 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=442, Invalid=4960, Unknown=0, NotChecked=0, Total=5402 [2020-08-22 16:18:44,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2020-08-22 16:18:44,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 207. [2020-08-22 16:18:44,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 207 states. [2020-08-22 16:18:44,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 460 transitions. [2020-08-22 16:18:44,724 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 460 transitions. Word has length 186 [2020-08-22 16:18:44,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:18:44,725 INFO L479 AbstractCegarLoop]: Abstraction has 207 states and 460 transitions. [2020-08-22 16:18:44,725 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-08-22 16:18:44,725 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 460 transitions. [2020-08-22 16:18:44,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2020-08-22 16:18:44,733 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:18:44,733 INFO L422 BasicCegarLoop]: trace histogram [32, 32, 18, 14, 13, 13, 13, 13, 13, 13, 13, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:18:44,947 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 16:18:44,947 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:18:44,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:18:44,948 INFO L82 PathProgramCache]: Analyzing trace with hash 1610377113, now seen corresponding path program 7 times [2020-08-22 16:18:44,948 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:18:44,948 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444987282] [2020-08-22 16:18:44,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:18:44,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:45,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:18:45,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:45,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 16:18:45,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:45,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:18:45,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:45,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:18:45,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:45,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:18:45,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:45,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:18:45,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:45,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:18:45,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:45,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 16:18:45,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:45,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-22 16:18:45,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:45,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:18:45,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:45,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:18:45,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:45,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:18:45,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:45,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:18:45,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:45,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:18:45,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:45,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:18:45,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:45,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 16:18:45,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:45,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-22 16:18:45,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:45,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-22 16:18:45,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:45,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-08-22 16:18:45,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:45,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-08-22 16:18:45,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:45,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:18:45,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:45,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:18:45,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:45,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:18:45,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:45,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:18:45,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:45,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:18:45,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:45,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:18:45,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:45,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:18:45,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:45,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 16:18:45,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:45,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-22 16:18:45,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:45,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-22 16:18:45,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:45,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-22 16:18:45,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:45,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-08-22 16:18:45,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:45,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-22 16:18:45,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:45,515 INFO L134 CoverageAnalysis]: Checked inductivity of 2469 backedges. 335 proven. 801 refuted. 0 times theorem prover too weak. 1333 trivial. 0 not checked. [2020-08-22 16:18:45,515 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444987282] [2020-08-22 16:18:45,516 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [944244672] [2020-08-22 16:18:45,516 INFO L93 rtionOrderModulation]: Changing assertion order to 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 [2020-08-22 16:18:45,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:45,627 INFO L263 TraceCheckSpWp]: Trace formula consists of 643 conjuncts, 20 conjunts are in the unsatisfiable core [2020-08-22 16:18:45,631 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 16:18:45,769 INFO L134 CoverageAnalysis]: Checked inductivity of 2469 backedges. 327 proven. 646 refuted. 0 times theorem prover too weak. 1496 trivial. 0 not checked. [2020-08-22 16:18:45,770 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-08-22 16:18:45,770 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 14 [2020-08-22 16:18:45,770 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665852573] [2020-08-22 16:18:45,771 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-22 16:18:45,771 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:18:45,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-22 16:18:45,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2020-08-22 16:18:45,772 INFO L87 Difference]: Start difference. First operand 207 states and 460 transitions. Second operand 14 states. [2020-08-22 16:18:46,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:18:46,117 INFO L93 Difference]: Finished difference Result 390 states and 1070 transitions. [2020-08-22 16:18:46,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-22 16:18:46,117 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 219 [2020-08-22 16:18:46,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:18:46,120 INFO L225 Difference]: With dead ends: 390 [2020-08-22 16:18:46,120 INFO L226 Difference]: Without dead ends: 130 [2020-08-22 16:18:46,126 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 311 GetRequests, 291 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=111, Invalid=351, Unknown=0, NotChecked=0, Total=462 [2020-08-22 16:18:46,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-08-22 16:18:46,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 96. [2020-08-22 16:18:46,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-08-22 16:18:46,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 127 transitions. [2020-08-22 16:18:46,137 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 127 transitions. Word has length 219 [2020-08-22 16:18:46,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:18:46,137 INFO L479 AbstractCegarLoop]: Abstraction has 96 states and 127 transitions. [2020-08-22 16:18:46,138 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-22 16:18:46,138 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 127 transitions. [2020-08-22 16:18:46,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2020-08-22 16:18:46,140 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:18:46,141 INFO L422 BasicCegarLoop]: trace histogram [29, 29, 16, 13, 12, 12, 12, 12, 12, 12, 12, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:18:46,354 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2020-08-22 16:18:46,354 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:18:46,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:18:46,355 INFO L82 PathProgramCache]: Analyzing trace with hash -2090243986, now seen corresponding path program 8 times [2020-08-22 16:18:46,355 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:18:46,355 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159067726] [2020-08-22 16:18:46,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:18:46,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:46,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:18:46,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:46,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 16:18:46,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:46,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:18:46,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:46,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:18:46,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:46,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:18:46,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:46,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:18:46,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:46,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:18:46,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:46,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 16:18:46,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:46,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-22 16:18:46,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:46,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:18:46,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:46,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:18:46,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:46,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:18:46,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:46,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:18:46,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:46,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 16:18:46,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:46,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-22 16:18:46,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:46,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-22 16:18:46,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:46,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-08-22 16:18:46,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:46,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:18:46,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:46,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:18:46,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:46,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:18:46,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:46,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:18:46,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:46,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:18:46,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:46,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:18:46,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:46,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:18:46,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:46,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 16:18:46,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:46,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-22 16:18:46,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:46,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-22 16:18:46,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:46,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-22 16:18:46,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:46,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-08-22 16:18:46,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:46,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-22 16:18:46,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:47,028 INFO L134 CoverageAnalysis]: Checked inductivity of 2020 backedges. 665 proven. 517 refuted. 0 times theorem prover too weak. 838 trivial. 0 not checked. [2020-08-22 16:18:47,028 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159067726] [2020-08-22 16:18:47,029 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [11309757] [2020-08-22 16:18:47,029 INFO L93 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 [2020-08-22 16:18:47,118 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-08-22 16:18:47,118 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-08-22 16:18:47,120 INFO L263 TraceCheckSpWp]: Trace formula consists of 585 conjuncts, 41 conjunts are in the unsatisfiable core [2020-08-22 16:18:47,124 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 16:18:47,268 INFO L134 CoverageAnalysis]: Checked inductivity of 2020 backedges. 647 proven. 519 refuted. 0 times theorem prover too weak. 854 trivial. 0 not checked. [2020-08-22 16:18:47,268 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-08-22 16:18:47,268 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 23] total 27 [2020-08-22 16:18:47,269 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524660159] [2020-08-22 16:18:47,271 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-08-22 16:18:47,271 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:18:47,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-08-22 16:18:47,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=604, Unknown=0, NotChecked=0, Total=702 [2020-08-22 16:18:47,272 INFO L87 Difference]: Start difference. First operand 96 states and 127 transitions. Second operand 27 states. [2020-08-22 16:18:48,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:18:48,146 INFO L93 Difference]: Finished difference Result 210 states and 273 transitions. [2020-08-22 16:18:48,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-08-22 16:18:48,147 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 199 [2020-08-22 16:18:48,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:18:48,149 INFO L225 Difference]: With dead ends: 210 [2020-08-22 16:18:48,150 INFO L226 Difference]: Without dead ends: 137 [2020-08-22 16:18:48,152 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 311 GetRequests, 261 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 681 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=439, Invalid=2213, Unknown=0, NotChecked=0, Total=2652 [2020-08-22 16:18:48,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2020-08-22 16:18:48,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 101. [2020-08-22 16:18:48,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-08-22 16:18:48,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 132 transitions. [2020-08-22 16:18:48,162 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 132 transitions. Word has length 199 [2020-08-22 16:18:48,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:18:48,162 INFO L479 AbstractCegarLoop]: Abstraction has 101 states and 132 transitions. [2020-08-22 16:18:48,163 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-08-22 16:18:48,163 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 132 transitions. [2020-08-22 16:18:48,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2020-08-22 16:18:48,165 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:18:48,166 INFO L422 BasicCegarLoop]: trace histogram [31, 31, 17, 14, 13, 13, 13, 13, 13, 13, 13, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:18:48,380 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 16:18:48,381 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:18:48,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:18:48,381 INFO L82 PathProgramCache]: Analyzing trace with hash 469178039, now seen corresponding path program 9 times [2020-08-22 16:18:48,382 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:18:48,382 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235294354] [2020-08-22 16:18:48,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:18:48,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:48,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:18:48,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:48,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 16:18:48,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:48,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:18:48,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:48,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:18:48,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:48,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:18:48,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:48,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:18:48,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:48,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:18:48,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:48,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 16:18:48,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:48,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-22 16:18:48,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:48,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:18:48,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:48,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:18:48,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:48,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:18:48,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:48,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:18:48,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:48,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:18:48,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:48,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 16:18:48,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:48,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-22 16:18:48,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:48,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-22 16:18:48,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:48,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-22 16:18:48,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:48,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-08-22 16:18:48,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:48,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:18:48,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:48,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:18:48,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:48,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:18:48,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:48,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:18:48,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:48,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:18:48,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:48,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:18:48,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:48,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:18:48,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:48,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 16:18:48,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:48,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-22 16:18:48,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:48,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-22 16:18:48,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:48,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-22 16:18:48,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:48,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-08-22 16:18:48,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:48,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-22 16:18:48,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:48,909 INFO L134 CoverageAnalysis]: Checked inductivity of 2320 backedges. 268 proven. 783 refuted. 0 times theorem prover too weak. 1269 trivial. 0 not checked. [2020-08-22 16:18:48,909 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235294354] [2020-08-22 16:18:48,909 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1148256502] [2020-08-22 16:18:48,910 INFO L93 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 [2020-08-22 16:18:49,015 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2020-08-22 16:18:49,016 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-08-22 16:18:49,018 INFO L263 TraceCheckSpWp]: Trace formula consists of 623 conjuncts, 25 conjunts are in the unsatisfiable core [2020-08-22 16:18:49,024 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 16:18:49,116 INFO L134 CoverageAnalysis]: Checked inductivity of 2320 backedges. 1340 proven. 196 refuted. 0 times theorem prover too weak. 784 trivial. 0 not checked. [2020-08-22 16:18:49,116 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-08-22 16:18:49,117 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 16] total 20 [2020-08-22 16:18:49,117 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780815834] [2020-08-22 16:18:49,117 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-08-22 16:18:49,118 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:18:49,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-08-22 16:18:49,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=321, Unknown=0, NotChecked=0, Total=380 [2020-08-22 16:18:49,118 INFO L87 Difference]: Start difference. First operand 101 states and 132 transitions. Second operand 20 states. [2020-08-22 16:18:49,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:18:49,606 INFO L93 Difference]: Finished difference Result 178 states and 230 transitions. [2020-08-22 16:18:49,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-22 16:18:49,606 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 212 [2020-08-22 16:18:49,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:18:49,608 INFO L225 Difference]: With dead ends: 178 [2020-08-22 16:18:49,608 INFO L226 Difference]: Without dead ends: 107 [2020-08-22 16:18:49,610 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 311 GetRequests, 276 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 268 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=248, Invalid=1084, Unknown=0, NotChecked=0, Total=1332 [2020-08-22 16:18:49,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-08-22 16:18:49,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 96. [2020-08-22 16:18:49,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-08-22 16:18:49,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 119 transitions. [2020-08-22 16:18:49,618 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 119 transitions. Word has length 212 [2020-08-22 16:18:49,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:18:49,619 INFO L479 AbstractCegarLoop]: Abstraction has 96 states and 119 transitions. [2020-08-22 16:18:49,619 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-08-22 16:18:49,619 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 119 transitions. [2020-08-22 16:18:49,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2020-08-22 16:18:49,623 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:18:49,623 INFO L422 BasicCegarLoop]: trace histogram [42, 42, 23, 19, 18, 18, 18, 18, 18, 18, 18, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:18:49,836 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 16:18:49,837 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:18:49,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:18:49,838 INFO L82 PathProgramCache]: Analyzing trace with hash -1239024914, now seen corresponding path program 10 times [2020-08-22 16:18:49,838 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:18:49,838 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184647348] [2020-08-22 16:18:49,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:18:49,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:49,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:18:49,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:49,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 16:18:50,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:50,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:18:50,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:50,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:18:50,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:50,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:18:50,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:50,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:18:50,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:50,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:18:50,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:50,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:18:50,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:50,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 16:18:50,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:50,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-22 16:18:50,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:50,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:18:50,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:50,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:18:50,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:50,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:18:50,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:50,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:18:50,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:50,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 16:18:50,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:50,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-22 16:18:50,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:50,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-22 16:18:50,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:50,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-08-22 16:18:50,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:50,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:18:50,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:50,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:18:50,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:50,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:18:50,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:50,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:18:50,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:50,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:18:50,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:50,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:18:50,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:50,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 16:18:50,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:50,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-22 16:18:50,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:50,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-22 16:18:50,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:50,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-22 16:18:50,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:50,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-08-22 16:18:50,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:50,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2020-08-22 16:18:50,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:50,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:18:50,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:50,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:18:50,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:50,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:18:50,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:50,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:18:50,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:50,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:18:50,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:50,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:18:50,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:50,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:18:50,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:50,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 16:18:50,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:50,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-22 16:18:50,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:50,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-22 16:18:50,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:50,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-22 16:18:50,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:50,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-08-22 16:18:50,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:50,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-22 16:18:50,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:50,503 INFO L134 CoverageAnalysis]: Checked inductivity of 4329 backedges. 228 proven. 513 refuted. 0 times theorem prover too weak. 3588 trivial. 0 not checked. [2020-08-22 16:18:50,504 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184647348] [2020-08-22 16:18:50,504 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [395338404] [2020-08-22 16:18:50,504 INFO L93 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 [2020-08-22 16:18:50,595 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-08-22 16:18:50,595 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-08-22 16:18:50,597 INFO L263 TraceCheckSpWp]: Trace formula consists of 689 conjuncts, 10 conjunts are in the unsatisfiable core [2020-08-22 16:18:50,602 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 16:18:50,704 INFO L134 CoverageAnalysis]: Checked inductivity of 4329 backedges. 234 proven. 507 refuted. 0 times theorem prover too weak. 3588 trivial. 0 not checked. [2020-08-22 16:18:50,704 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-08-22 16:18:50,704 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10 [2020-08-22 16:18:50,705 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962520981] [2020-08-22 16:18:50,705 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 16:18:50,705 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:18:50,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 16:18:50,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-08-22 16:18:50,706 INFO L87 Difference]: Start difference. First operand 96 states and 119 transitions. Second operand 10 states. [2020-08-22 16:18:50,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:18:50,848 INFO L93 Difference]: Finished difference Result 99 states and 122 transitions. [2020-08-22 16:18:50,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-22 16:18:50,849 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 284 [2020-08-22 16:18:50,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:18:50,852 INFO L225 Difference]: With dead ends: 99 [2020-08-22 16:18:50,852 INFO L226 Difference]: Without dead ends: 0 [2020-08-22 16:18:50,853 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 381 GetRequests, 368 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-08-22 16:18:50,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-22 16:18:50,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-22 16:18:50,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-22 16:18:50,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-22 16:18:50,854 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 284 [2020-08-22 16:18:50,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:18:50,854 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-22 16:18:50,854 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 16:18:50,856 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-22 16:18:50,856 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-22 16:18:51,057 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2020-08-22 16:18:51,060 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-22 16:18:52,150 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 203 DAG size of output: 99 [2020-08-22 16:18:55,115 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 10 [2020-08-22 16:18:58,029 WARN L193 SmtUtils]: Spent 2.90 s on a formula simplification. DAG size of input: 329 DAG size of output: 63 [2020-08-22 16:18:58,186 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 11 [2020-08-22 16:18:58,237 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-08-22 16:18:58,238 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-08-22 16:18:58,238 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-08-22 16:18:58,238 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-08-22 16:18:58,238 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-08-22 16:18:58,238 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-08-22 16:18:58,238 INFO L268 CegarLoopResult]: For program point ackermannEXIT(lines 14 22) no Hoare annotation was computed. [2020-08-22 16:18:58,238 INFO L271 CegarLoopResult]: At program point ackermannENTRY(lines 14 22) the Hoare annotation is: true [2020-08-22 16:18:58,238 INFO L264 CegarLoopResult]: At program point L21(line 21) the Hoare annotation is: (and (= ackermann_~n |ackermann_#in~n|) (= ackermann_~m |ackermann_#in~m|) (not (= |ackermann_#in~m| 0))) [2020-08-22 16:18:58,238 INFO L268 CegarLoopResult]: For program point L21-1(line 21) no Hoare annotation was computed. [2020-08-22 16:18:58,238 INFO L264 CegarLoopResult]: At program point L19(line 19) the Hoare annotation is: (and (= |ackermann_#in~n| 0) (not (= ackermann_~m 0)) (= ackermann_~n |ackermann_#in~n|) (= ackermann_~m |ackermann_#in~m|)) [2020-08-22 16:18:58,239 INFO L264 CegarLoopResult]: At program point L21-2(line 21) the Hoare annotation is: (let ((.cse9 (<= 3 |ackermann_#in~n|)) (.cse5 (<= 1 |ackermann_#in~m|)) (.cse8 (<= |ackermann_#in~m| 1)) (.cse11 (<= |ackermann_#in~n| 1)) (.cse13 (<= 3 |ackermann_#t~ret1|)) (.cse3 (= ackermann_~m |ackermann_#in~m|)) (.cse14 (= ackermann_~n |ackermann_#in~n|)) (.cse1 (<= 2 |ackermann_#in~m|))) (let ((.cse0 (and .cse11 .cse13 .cse3 .cse14 .cse1)) (.cse10 (<= |ackermann_#in~n| 4)) (.cse6 (not .cse8)) (.cse2 (<= 5 |ackermann_#t~ret1|)) (.cse7 (and .cse8 (<= |ackermann_#in~n| 3) (<= 4 |ackermann_#t~ret1|) (<= |ackermann_#t~ret1| 4) .cse9 .cse5 .cse3 .cse14)) (.cse4 (<= |ackermann_#t~ret1| 3)) (.cse12 (<= |ackermann_#t~ret1| 5))) (and (or .cse0 (not .cse1) (and .cse2 .cse3)) (or (and .cse4 .cse5) (<= 6 |ackermann_#in~n|) .cse6 .cse7 (and .cse8 .cse2 .cse9 .cse10) (and (<= |ackermann_#t~ret1| 6) (<= 6 |ackermann_#t~ret1|) .cse9)) (or .cse0 (and (<= 2 |ackermann_#t~ret1|) (<= |ackermann_#t~ret1| 2) .cse3) (not .cse11)) (or (and .cse8 .cse12 .cse2 (<= 4 |ackermann_#in~n|) .cse3 .cse10) .cse11 .cse6 (and .cse13 (<= |ackermann_#in~n| 2) .cse3) (and (<= 5 |ackermann_#in~n|) .cse2 .cse3) .cse7) (not (<= |ackermann_#in~n| 0)) (or (and .cse9 .cse1) (and .cse8 .cse5) .cse4 (<= 3 |ackermann_#in~m|) (and .cse12 (<= 2 |ackermann_#in~n|) .cse1)) .cse14))) [2020-08-22 16:18:58,239 INFO L268 CegarLoopResult]: For program point L18(lines 18 20) no Hoare annotation was computed. [2020-08-22 16:18:58,239 INFO L268 CegarLoopResult]: For program point L19-1(line 19) no Hoare annotation was computed. [2020-08-22 16:18:58,239 INFO L268 CegarLoopResult]: For program point L21-3(line 21) no Hoare annotation was computed. [2020-08-22 16:18:58,239 INFO L268 CegarLoopResult]: For program point L15(lines 15 17) no Hoare annotation was computed. [2020-08-22 16:18:58,239 INFO L268 CegarLoopResult]: For program point ackermannFINAL(lines 14 22) no Hoare annotation was computed. [2020-08-22 16:18:58,240 INFO L268 CegarLoopResult]: For program point L33(lines 33 38) no Hoare annotation was computed. [2020-08-22 16:18:58,240 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 43) no Hoare annotation was computed. [2020-08-22 16:18:58,240 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 25 45) the Hoare annotation is: true [2020-08-22 16:18:58,240 INFO L268 CegarLoopResult]: For program point L27(lines 27 31) no Hoare annotation was computed. [2020-08-22 16:18:58,240 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 25 45) no Hoare annotation was computed. [2020-08-22 16:18:58,240 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 25 45) no Hoare annotation was computed. [2020-08-22 16:18:58,240 INFO L268 CegarLoopResult]: For program point L43(line 43) no Hoare annotation was computed. [2020-08-22 16:18:58,240 INFO L268 CegarLoopResult]: For program point L40(lines 40 44) no Hoare annotation was computed. [2020-08-22 16:18:58,240 INFO L271 CegarLoopResult]: At program point L39(line 39) the Hoare annotation is: true [2020-08-22 16:18:58,240 INFO L268 CegarLoopResult]: For program point L39-1(line 39) no Hoare annotation was computed. [2020-08-22 16:18:58,247 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 04:18:58 BoogieIcfgContainer [2020-08-22 16:18:58,248 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 16:18:58,250 INFO L168 Benchmark]: Toolchain (without parser) took 30953.90 ms. Allocated memory was 143.1 MB in the beginning and 617.1 MB in the end (delta: 474.0 MB). Free memory was 106.3 MB in the beginning and 578.0 MB in the end (delta: -471.7 MB). Peak memory consumption was 488.3 MB. Max. memory is 7.1 GB. [2020-08-22 16:18:58,256 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 143.1 MB. Free memory was 124.7 MB in the beginning and 124.2 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. [2020-08-22 16:18:58,258 INFO L168 Benchmark]: CACSL2BoogieTranslator took 239.00 ms. Allocated memory is still 143.1 MB. Free memory was 105.9 MB in the beginning and 96.0 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. [2020-08-22 16:18:58,262 INFO L168 Benchmark]: Boogie Preprocessor took 117.86 ms. Allocated memory was 143.1 MB in the beginning and 204.5 MB in the end (delta: 61.3 MB). Free memory was 96.0 MB in the beginning and 182.8 MB in the end (delta: -86.8 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. [2020-08-22 16:18:58,263 INFO L168 Benchmark]: RCFGBuilder took 289.43 ms. Allocated memory is still 204.5 MB. Free memory was 182.8 MB in the beginning and 170.3 MB in the end (delta: 12.5 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. [2020-08-22 16:18:58,264 INFO L168 Benchmark]: TraceAbstraction took 30299.66 ms. Allocated memory was 204.5 MB in the beginning and 617.1 MB in the end (delta: 412.6 MB). Free memory was 169.4 MB in the beginning and 578.0 MB in the end (delta: -408.6 MB). Peak memory consumption was 490.1 MB. Max. memory is 7.1 GB. [2020-08-22 16:18:58,273 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 143.1 MB. Free memory was 124.7 MB in the beginning and 124.2 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 239.00 ms. Allocated memory is still 143.1 MB. Free memory was 105.9 MB in the beginning and 96.0 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 117.86 ms. Allocated memory was 143.1 MB in the beginning and 204.5 MB in the end (delta: 61.3 MB). Free memory was 96.0 MB in the beginning and 182.8 MB in the end (delta: -86.8 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 289.43 ms. Allocated memory is still 204.5 MB. Free memory was 182.8 MB in the beginning and 170.3 MB in the end (delta: 12.5 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 30299.66 ms. Allocated memory was 204.5 MB in the beginning and 617.1 MB in the end (delta: 412.6 MB). Free memory was 169.4 MB in the beginning and 578.0 MB in the end (delta: -408.6 MB). Peak memory consumption was 490.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 43]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 27 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 23.0s, OverallIterations: 12, TraceHistogramMax: 42, AutomataDifference: 11.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 7.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 381 SDtfs, 508 SDslu, 2303 SDs, 0 SdLazy, 6970 SolverSat, 1447 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2888 GetRequests, 2426 SyntacticMatches, 7 SemanticMatches, 455 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5584 ImplicationChecksByTransitivity, 7.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=207occurred in iteration=8, 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, 12 MinimizatonAttempts, 340 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 725 PreInvPairs, 2932 NumberOfFragments, 264 HoareAnnotationTreeSize, 725 FomulaSimplifications, 835862 FormulaSimplificationTreeSizeReduction, 3.9s HoareSimplificationTime, 9 FomulaSimplificationsInter, 28636 FormulaSimplificationTreeSizeReductionInter, 3.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 7.2s InterpolantComputationTime, 3733 NumberOfCodeBlocks, 3581 NumberOfCodeBlocksAsserted, 88 NumberOfCheckSat, 3710 ConstructedInterpolants, 0 QuantifiedInterpolants, 1227468 SizeOfPredicates, 94 NumberOfNonLiveVariables, 5009 ConjunctsInSsa, 293 ConjunctsInUnsatCore, 23 InterpolantComputations, 1 PerfectInterpolantSequences, 30313/37238 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...