/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_8-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-72570d3 [2020-08-22 16:34:12,681 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 16:34:12,685 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 16:34:12,712 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 16:34:12,712 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 16:34:12,714 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 16:34:12,715 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 16:34:12,717 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 16:34:12,719 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 16:34:12,720 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 16:34:12,722 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 16:34:12,723 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 16:34:12,723 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 16:34:12,724 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 16:34:12,726 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 16:34:12,727 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 16:34:12,728 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 16:34:12,732 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 16:34:12,734 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 16:34:12,738 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 16:34:12,741 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 16:34:12,743 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 16:34:12,744 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 16:34:12,746 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 16:34:12,754 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-22 16:34:12,773 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 16:34:12,836 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 16:34:12,836 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 16:34:12,838 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 16:34:12,838 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 16:34:12,839 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 16:34:12,839 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 16:34:12,839 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 16:34:12,839 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 16:34:12,839 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 16:34:12,840 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 16:34:12,840 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 16:34:12,840 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 16:34:12,840 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 16:34:12,840 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 16:34:12,841 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 16:34:12,841 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 16:34:12,841 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 16:34:12,841 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 16:34:12,841 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 16:34:12,842 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 16:34:12,842 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 16:34:12,842 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 16:34:12,842 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 16:34:12,843 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 16:34:12,843 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 16:34:12,843 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 16:34:12,843 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 16:34:12,843 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 16:34:12,844 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 16:34:12,844 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-08-22 16:34:13,224 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 16:34:13,239 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 16:34:13,243 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 16:34:13,246 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 16:34:13,246 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 16:34:13,247 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_8-1.c [2020-08-22 16:34:13,338 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6cd645c8e/382c800d54284c37af0e6788f8e77138/FLAG750fc556e [2020-08-22 16:34:13,905 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 16:34:13,906 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive-simple/fibo_2calls_8-1.c [2020-08-22 16:34:13,916 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6cd645c8e/382c800d54284c37af0e6788f8e77138/FLAG750fc556e [2020-08-22 16:34:14,230 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6cd645c8e/382c800d54284c37af0e6788f8e77138 [2020-08-22 16:34:14,243 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 16:34:14,246 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 16:34:14,248 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 16:34:14,248 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 16:34:14,252 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 16:34:14,253 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 04:34:14" (1/1) ... [2020-08-22 16:34:14,256 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3dd2a798 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:34:14, skipping insertion in model container [2020-08-22 16:34:14,257 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 04:34:14" (1/1) ... [2020-08-22 16:34:14,268 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 16:34:14,287 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 16:34:14,482 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 16:34:14,489 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 16:34:14,509 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 16:34:14,530 INFO L208 MainTranslator]: Completed translation [2020-08-22 16:34:14,531 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:34:14 WrapperNode [2020-08-22 16:34:14,531 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 16:34:14,533 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 16:34:14,533 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 16:34:14,533 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 16:34:14,553 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:34:14" (1/1) ... [2020-08-22 16:34:14,553 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:34:14" (1/1) ... [2020-08-22 16:34:14,679 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:34:14" (1/1) ... [2020-08-22 16:34:14,679 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:34:14" (1/1) ... [2020-08-22 16:34:14,685 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:34:14" (1/1) ... [2020-08-22 16:34:14,690 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:34:14" (1/1) ... [2020-08-22 16:34:14,695 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:34:14" (1/1) ... [2020-08-22 16:34:14,702 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 16:34:14,703 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 16:34:14,703 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 16:34:14,704 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 16:34:14,705 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:34:14" (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 16:34:14,799 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 16:34:14,799 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 16:34:14,800 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2020-08-22 16:34:14,800 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2020-08-22 16:34:14,800 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 16:34:14,800 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 16:34:14,801 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 16:34:14,801 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2020-08-22 16:34:14,801 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2020-08-22 16:34:14,802 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 16:34:14,803 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 16:34:14,805 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 16:34:15,036 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 16:34:15,037 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-22 16:34:15,042 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 04:34:15 BoogieIcfgContainer [2020-08-22 16:34:15,042 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 16:34:15,044 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 16:34:15,044 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 16:34:15,052 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 16:34:15,052 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 04:34:14" (1/3) ... [2020-08-22 16:34:15,053 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a2ff0ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 04:34:15, skipping insertion in model container [2020-08-22 16:34:15,053 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:34:14" (2/3) ... [2020-08-22 16:34:15,054 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a2ff0ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 04:34:15, skipping insertion in model container [2020-08-22 16:34:15,054 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 04:34:15" (3/3) ... [2020-08-22 16:34:15,059 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_2calls_8-1.c [2020-08-22 16:34:15,071 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-08-22 16:34:15,080 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 16:34:15,096 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 16:34:15,132 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 16:34:15,132 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 16:34:15,133 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-08-22 16:34:15,134 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 16:34:15,134 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 16:34:15,134 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 16:34:15,134 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 16:34:15,135 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 16:34:15,157 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-08-22 16:34:15,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-08-22 16:34:15,165 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:34:15,166 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:34:15,167 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:34:15,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:34:15,174 INFO L82 PathProgramCache]: Analyzing trace with hash 1464461757, now seen corresponding path program 1 times [2020-08-22 16:34:15,184 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:34:15,184 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51856759] [2020-08-22 16:34:15,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:34:15,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:15,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:34:15,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:15,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 16:34:15,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:15,394 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 16:34:15,395 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51856759] [2020-08-22 16:34:15,396 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 16:34:15,396 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 16:34:15,397 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984386391] [2020-08-22 16:34:15,404 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 16:34:15,404 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:34:15,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 16:34:15,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 16:34:15,426 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 5 states. [2020-08-22 16:34:15,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:34:15,678 INFO L93 Difference]: Finished difference Result 44 states and 53 transitions. [2020-08-22 16:34:15,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 16:34:15,680 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-08-22 16:34:15,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:34:15,691 INFO L225 Difference]: With dead ends: 44 [2020-08-22 16:34:15,692 INFO L226 Difference]: Without dead ends: 30 [2020-08-22 16:34:15,696 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 16:34:15,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-08-22 16:34:15,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-08-22 16:34:15,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-08-22 16:34:15,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 37 transitions. [2020-08-22 16:34:15,742 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 37 transitions. Word has length 13 [2020-08-22 16:34:15,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:34:15,742 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 37 transitions. [2020-08-22 16:34:15,743 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 16:34:15,743 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 37 transitions. [2020-08-22 16:34:15,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-08-22 16:34:15,745 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:34:15,745 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:34:15,745 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 16:34:15,746 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:34:15,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:34:15,746 INFO L82 PathProgramCache]: Analyzing trace with hash -1134800479, now seen corresponding path program 1 times [2020-08-22 16:34:15,747 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:34:15,747 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170264897] [2020-08-22 16:34:15,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:34:15,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:15,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:34:15,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:15,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 16:34:15,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:15,812 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 16:34:15,813 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170264897] [2020-08-22 16:34:15,813 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 16:34:15,813 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 16:34:15,814 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523012725] [2020-08-22 16:34:15,816 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 16:34:15,816 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:34:15,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 16:34:15,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 16:34:15,817 INFO L87 Difference]: Start difference. First operand 30 states and 37 transitions. Second operand 5 states. [2020-08-22 16:34:15,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:34:15,890 INFO L93 Difference]: Finished difference Result 36 states and 44 transitions. [2020-08-22 16:34:15,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 16:34:15,891 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-08-22 16:34:15,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:34:15,893 INFO L225 Difference]: With dead ends: 36 [2020-08-22 16:34:15,893 INFO L226 Difference]: Without dead ends: 32 [2020-08-22 16:34:15,895 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 16:34:15,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-08-22 16:34:15,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2020-08-22 16:34:15,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-08-22 16:34:15,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 37 transitions. [2020-08-22 16:34:15,908 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 37 transitions. Word has length 14 [2020-08-22 16:34:15,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:34:15,908 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 37 transitions. [2020-08-22 16:34:15,908 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 16:34:15,909 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 37 transitions. [2020-08-22 16:34:15,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-08-22 16:34:15,910 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:34:15,911 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:34:15,911 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 16:34:15,911 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:34:15,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:34:15,912 INFO L82 PathProgramCache]: Analyzing trace with hash -1592795560, now seen corresponding path program 1 times [2020-08-22 16:34:15,912 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:34:15,913 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565431171] [2020-08-22 16:34:15,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:34:15,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:15,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:34:15,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:15,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 16:34:16,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:16,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:16,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:16,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 16:34:16,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:16,091 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-22 16:34:16,092 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565431171] [2020-08-22 16:34:16,092 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1817494198] [2020-08-22 16:34:16,093 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 16:34:16,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:16,142 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 6 conjunts are in the unsatisfiable core [2020-08-22 16:34:16,154 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 16:34:16,329 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-22 16:34:16,330 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-08-22 16:34:16,330 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2020-08-22 16:34:16,330 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865696866] [2020-08-22 16:34:16,331 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 16:34:16,331 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:34:16,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 16:34:16,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-08-22 16:34:16,332 INFO L87 Difference]: Start difference. First operand 30 states and 37 transitions. Second operand 10 states. [2020-08-22 16:34:16,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:34:16,618 INFO L93 Difference]: Finished difference Result 58 states and 78 transitions. [2020-08-22 16:34:16,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-22 16:34:16,618 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 26 [2020-08-22 16:34:16,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:34:16,620 INFO L225 Difference]: With dead ends: 58 [2020-08-22 16:34:16,620 INFO L226 Difference]: Without dead ends: 34 [2020-08-22 16:34:16,621 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2020-08-22 16:34:16,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-08-22 16:34:16,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32. [2020-08-22 16:34:16,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-08-22 16:34:16,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 39 transitions. [2020-08-22 16:34:16,631 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 39 transitions. Word has length 26 [2020-08-22 16:34:16,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:34:16,631 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 39 transitions. [2020-08-22 16:34:16,632 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 16:34:16,632 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 39 transitions. [2020-08-22 16:34:16,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-08-22 16:34:16,633 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:34:16,634 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:34:16,839 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-08-22 16:34:16,840 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:34:16,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:34:16,841 INFO L82 PathProgramCache]: Analyzing trace with hash 746633022, now seen corresponding path program 1 times [2020-08-22 16:34:16,842 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:34:16,842 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057968956] [2020-08-22 16:34:16,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:34:16,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:16,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:34:16,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:16,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 16:34:16,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:16,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:16,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:17,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 16:34:17,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:17,019 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-22 16:34:17,020 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057968956] [2020-08-22 16:34:17,020 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1566094766] [2020-08-22 16:34:17,021 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 16:34:17,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:17,056 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 6 conjunts are in the unsatisfiable core [2020-08-22 16:34:17,059 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 16:34:17,116 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-22 16:34:17,117 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-08-22 16:34:17,117 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-08-22 16:34:17,118 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132551541] [2020-08-22 16:34:17,119 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 16:34:17,119 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:34:17,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 16:34:17,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-22 16:34:17,120 INFO L87 Difference]: Start difference. First operand 32 states and 39 transitions. Second operand 9 states. [2020-08-22 16:34:17,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:34:17,347 INFO L93 Difference]: Finished difference Result 54 states and 74 transitions. [2020-08-22 16:34:17,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-22 16:34:17,348 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 27 [2020-08-22 16:34:17,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:34:17,355 INFO L225 Difference]: With dead ends: 54 [2020-08-22 16:34:17,355 INFO L226 Difference]: Without dead ends: 50 [2020-08-22 16:34:17,359 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-08-22 16:34:17,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-08-22 16:34:17,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 48. [2020-08-22 16:34:17,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-08-22 16:34:17,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 65 transitions. [2020-08-22 16:34:17,395 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 65 transitions. Word has length 27 [2020-08-22 16:34:17,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:34:17,395 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 65 transitions. [2020-08-22 16:34:17,396 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 16:34:17,396 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 65 transitions. [2020-08-22 16:34:17,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-08-22 16:34:17,403 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:34:17,403 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:34:17,604 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 16:34:17,604 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:34:17,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:34:17,605 INFO L82 PathProgramCache]: Analyzing trace with hash 986908919, now seen corresponding path program 1 times [2020-08-22 16:34:17,605 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:34:17,605 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821960729] [2020-08-22 16:34:17,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:34:17,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:17,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:34:17,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:17,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 16:34:17,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:17,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:17,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:17,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:17,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:17,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 16:34:17,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:17,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 16:34:17,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:17,836 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-08-22 16:34:17,836 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821960729] [2020-08-22 16:34:17,837 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [412275384] [2020-08-22 16:34:17,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 16:34:17,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:17,878 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 8 conjunts are in the unsatisfiable core [2020-08-22 16:34:17,882 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 16:34:17,999 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-08-22 16:34:17,999 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-08-22 16:34:17,999 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8] total 11 [2020-08-22 16:34:18,000 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377088009] [2020-08-22 16:34:18,000 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-22 16:34:18,001 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:34:18,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-22 16:34:18,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-08-22 16:34:18,002 INFO L87 Difference]: Start difference. First operand 48 states and 65 transitions. Second operand 11 states. [2020-08-22 16:34:18,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:34:18,335 INFO L93 Difference]: Finished difference Result 108 states and 170 transitions. [2020-08-22 16:34:18,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-22 16:34:18,336 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 39 [2020-08-22 16:34:18,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:34:18,339 INFO L225 Difference]: With dead ends: 108 [2020-08-22 16:34:18,339 INFO L226 Difference]: Without dead ends: 66 [2020-08-22 16:34:18,340 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2020-08-22 16:34:18,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-08-22 16:34:18,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2020-08-22 16:34:18,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-08-22 16:34:18,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 95 transitions. [2020-08-22 16:34:18,354 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 95 transitions. Word has length 39 [2020-08-22 16:34:18,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:34:18,354 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 95 transitions. [2020-08-22 16:34:18,354 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-22 16:34:18,355 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 95 transitions. [2020-08-22 16:34:18,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-08-22 16:34:18,357 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:34:18,357 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:34:18,570 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 16:34:18,571 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:34:18,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:34:18,572 INFO L82 PathProgramCache]: Analyzing trace with hash -2100495745, now seen corresponding path program 1 times [2020-08-22 16:34:18,572 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:34:18,573 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628469826] [2020-08-22 16:34:18,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:34:18,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:18,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:34:18,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:18,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 16:34:18,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:18,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:18,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:18,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:18,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:18,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 16:34:18,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:18,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 16:34:18,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:18,719 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-08-22 16:34:18,719 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628469826] [2020-08-22 16:34:18,720 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1870331457] [2020-08-22 16:34:18,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 16:34:18,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:18,754 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 8 conjunts are in the unsatisfiable core [2020-08-22 16:34:18,757 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 16:34:18,854 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-08-22 16:34:18,855 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-08-22 16:34:18,855 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2020-08-22 16:34:18,855 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353601044] [2020-08-22 16:34:18,856 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-22 16:34:18,856 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:34:18,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-22 16:34:18,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-08-22 16:34:18,857 INFO L87 Difference]: Start difference. First operand 66 states and 95 transitions. Second operand 13 states. [2020-08-22 16:34:19,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:34:19,314 INFO L93 Difference]: Finished difference Result 180 states and 324 transitions. [2020-08-22 16:34:19,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-22 16:34:19,315 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 40 [2020-08-22 16:34:19,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:34:19,319 INFO L225 Difference]: With dead ends: 180 [2020-08-22 16:34:19,320 INFO L226 Difference]: Without dead ends: 120 [2020-08-22 16:34:19,322 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=86, Invalid=376, Unknown=0, NotChecked=0, Total=462 [2020-08-22 16:34:19,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2020-08-22 16:34:19,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 106. [2020-08-22 16:34:19,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-08-22 16:34:19,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 169 transitions. [2020-08-22 16:34:19,349 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 169 transitions. Word has length 40 [2020-08-22 16:34:19,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:34:19,349 INFO L479 AbstractCegarLoop]: Abstraction has 106 states and 169 transitions. [2020-08-22 16:34:19,349 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-22 16:34:19,350 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 169 transitions. [2020-08-22 16:34:19,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-08-22 16:34:19,353 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:34:19,353 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:34:19,567 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 16:34:19,567 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:34:19,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:34:19,568 INFO L82 PathProgramCache]: Analyzing trace with hash -405677468, now seen corresponding path program 1 times [2020-08-22 16:34:19,568 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:34:19,568 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752883574] [2020-08-22 16:34:19,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:34:19,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:19,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:34:19,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:19,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 16:34:19,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:19,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:19,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:19,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:19,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:19,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:19,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:19,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 16:34:19,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:19,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 16:34:19,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:19,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-22 16:34:19,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:19,754 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 15 proven. 4 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-08-22 16:34:19,755 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752883574] [2020-08-22 16:34:19,755 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [564087398] [2020-08-22 16:34:19,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 16:34:19,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:19,807 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 10 conjunts are in the unsatisfiable core [2020-08-22 16:34:19,811 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 16:34:19,926 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 4 proven. 23 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-08-22 16:34:19,926 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-08-22 16:34:19,926 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 14 [2020-08-22 16:34:19,927 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455761931] [2020-08-22 16:34:19,928 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-22 16:34:19,928 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:34:19,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-22 16:34:19,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2020-08-22 16:34:19,929 INFO L87 Difference]: Start difference. First operand 106 states and 169 transitions. Second operand 14 states. [2020-08-22 16:34:20,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:34:20,557 INFO L93 Difference]: Finished difference Result 258 states and 498 transitions. [2020-08-22 16:34:20,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-08-22 16:34:20,560 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 54 [2020-08-22 16:34:20,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:34:20,564 INFO L225 Difference]: With dead ends: 258 [2020-08-22 16:34:20,564 INFO L226 Difference]: Without dead ends: 158 [2020-08-22 16:34:20,566 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=102, Invalid=450, Unknown=0, NotChecked=0, Total=552 [2020-08-22 16:34:20,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-08-22 16:34:20,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 112. [2020-08-22 16:34:20,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-08-22 16:34:20,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 180 transitions. [2020-08-22 16:34:20,594 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 180 transitions. Word has length 54 [2020-08-22 16:34:20,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:34:20,595 INFO L479 AbstractCegarLoop]: Abstraction has 112 states and 180 transitions. [2020-08-22 16:34:20,595 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-22 16:34:20,595 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 180 transitions. [2020-08-22 16:34:20,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-08-22 16:34:20,599 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:34:20,599 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:34:20,814 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2020-08-22 16:34:20,815 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:34:20,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:34:20,815 INFO L82 PathProgramCache]: Analyzing trace with hash -1504181040, now seen corresponding path program 1 times [2020-08-22 16:34:20,816 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:34:20,816 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853916122] [2020-08-22 16:34:20,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:34:20,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:20,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:34:20,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:20,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 16:34:20,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:20,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:20,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:20,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:20,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:20,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:20,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:21,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:21,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:21,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 16:34:21,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:21,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 16:34:21,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:21,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 16:34:21,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:21,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-22 16:34:21,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:21,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:21,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:21,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 16:34:21,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:21,098 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 39 proven. 38 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2020-08-22 16:34:21,099 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853916122] [2020-08-22 16:34:21,099 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1255164038] [2020-08-22 16:34:21,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 16:34:21,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:21,162 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 12 conjunts are in the unsatisfiable core [2020-08-22 16:34:21,184 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 16:34:21,338 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 12 proven. 68 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-08-22 16:34:21,338 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-08-22 16:34:21,339 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2020-08-22 16:34:21,339 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990242001] [2020-08-22 16:34:21,343 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-22 16:34:21,344 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:34:21,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-22 16:34:21,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2020-08-22 16:34:21,345 INFO L87 Difference]: Start difference. First operand 112 states and 180 transitions. Second operand 16 states. [2020-08-22 16:34:22,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:34:22,068 INFO L93 Difference]: Finished difference Result 243 states and 465 transitions. [2020-08-22 16:34:22,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-08-22 16:34:22,069 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 82 [2020-08-22 16:34:22,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:34:22,071 INFO L225 Difference]: With dead ends: 243 [2020-08-22 16:34:22,076 INFO L226 Difference]: Without dead ends: 110 [2020-08-22 16:34:22,078 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=153, Invalid=717, Unknown=0, NotChecked=0, Total=870 [2020-08-22 16:34:22,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-08-22 16:34:22,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 87. [2020-08-22 16:34:22,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-08-22 16:34:22,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 119 transitions. [2020-08-22 16:34:22,112 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 119 transitions. Word has length 82 [2020-08-22 16:34:22,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:34:22,113 INFO L479 AbstractCegarLoop]: Abstraction has 87 states and 119 transitions. [2020-08-22 16:34:22,113 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-22 16:34:22,113 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 119 transitions. [2020-08-22 16:34:22,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-08-22 16:34:22,118 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:34:22,118 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 7, 7, 7, 7, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:34:22,318 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 16:34:22,319 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:34:22,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:34:22,320 INFO L82 PathProgramCache]: Analyzing trace with hash 2095197631, now seen corresponding path program 1 times [2020-08-22 16:34:22,321 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:34:22,321 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73889554] [2020-08-22 16:34:22,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:34:22,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:22,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:34:22,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:22,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 16:34:22,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:22,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:22,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:22,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:22,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:22,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:22,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:22,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:22,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:22,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:22,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:22,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 16:34:22,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:22,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 16:34:22,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:22,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 16:34:22,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:22,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-22 16:34:22,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:22,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:22,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:22,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 16:34:22,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:22,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-22 16:34:22,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:22,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:22,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:22,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:22,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:22,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 16:34:22,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:22,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 16:34:22,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:22,585 INFO L134 CoverageAnalysis]: Checked inductivity of 358 backedges. 61 proven. 94 refuted. 0 times theorem prover too weak. 203 trivial. 0 not checked. [2020-08-22 16:34:22,586 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73889554] [2020-08-22 16:34:22,586 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [385101648] [2020-08-22 16:34:22,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 16:34:22,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:22,640 INFO L263 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 14 conjunts are in the unsatisfiable core [2020-08-22 16:34:22,644 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 16:34:22,795 INFO L134 CoverageAnalysis]: Checked inductivity of 358 backedges. 24 proven. 155 refuted. 0 times theorem prover too weak. 179 trivial. 0 not checked. [2020-08-22 16:34:22,796 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-08-22 16:34:22,796 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 17 [2020-08-22 16:34:22,797 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125466791] [2020-08-22 16:34:22,797 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-08-22 16:34:22,798 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:34:22,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-08-22 16:34:22,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2020-08-22 16:34:22,798 INFO L87 Difference]: Start difference. First operand 87 states and 119 transitions. Second operand 17 states. [2020-08-22 16:34:23,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:34:23,480 INFO L93 Difference]: Finished difference Result 217 states and 375 transitions. [2020-08-22 16:34:23,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-08-22 16:34:23,480 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 123 [2020-08-22 16:34:23,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:34:23,484 INFO L225 Difference]: With dead ends: 217 [2020-08-22 16:34:23,484 INFO L226 Difference]: Without dead ends: 137 [2020-08-22 16:34:23,486 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=184, Invalid=872, Unknown=0, NotChecked=0, Total=1056 [2020-08-22 16:34:23,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2020-08-22 16:34:23,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 117. [2020-08-22 16:34:23,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-08-22 16:34:23,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 172 transitions. [2020-08-22 16:34:23,503 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 172 transitions. Word has length 123 [2020-08-22 16:34:23,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:34:23,504 INFO L479 AbstractCegarLoop]: Abstraction has 117 states and 172 transitions. [2020-08-22 16:34:23,504 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-08-22 16:34:23,504 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 172 transitions. [2020-08-22 16:34:23,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2020-08-22 16:34:23,508 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:34:23,508 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 16, 16, 13, 13, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 5, 5, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:34:23,721 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 16:34:23,722 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:34:23,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:34:23,723 INFO L82 PathProgramCache]: Analyzing trace with hash 466415905, now seen corresponding path program 1 times [2020-08-22 16:34:23,723 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:34:23,724 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482383880] [2020-08-22 16:34:23,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:34:23,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:23,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:34:23,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:23,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 16:34:23,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:23,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:23,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:23,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:23,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:23,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:23,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:23,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:23,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:24,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:24,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:24,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:24,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:24,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 16:34:24,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:24,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 16:34:24,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:24,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 16:34:24,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:24,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:24,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:24,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 16:34:24,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:24,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-22 16:34:24,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:24,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:24,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:24,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 16:34:24,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:24,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-08-22 16:34:24,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:24,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:24,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:24,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:24,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:24,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:24,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:24,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 16:34:24,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:24,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 16:34:24,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:24,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 16:34:24,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:24,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:24,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:24,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 16:34:24,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:24,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-08-22 16:34:24,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:24,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:24,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:24,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:24,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:24,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:24,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:24,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 16:34:24,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:24,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 16:34:24,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:24,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 16:34:24,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:24,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:24,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:24,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 16:34:24,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:24,329 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 165 proven. 262 refuted. 0 times theorem prover too weak. 977 trivial. 0 not checked. [2020-08-22 16:34:24,329 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482383880] [2020-08-22 16:34:24,330 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1242053892] [2020-08-22 16:34:24,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 16:34:24,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:24,439 INFO L263 TraceCheckSpWp]: Trace formula consists of 514 conjuncts, 16 conjunts are in the unsatisfiable core [2020-08-22 16:34:24,452 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 16:34:24,644 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 77 proven. 418 refuted. 0 times theorem prover too weak. 909 trivial. 0 not checked. [2020-08-22 16:34:24,645 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-08-22 16:34:24,645 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 18 [2020-08-22 16:34:24,646 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144355495] [2020-08-22 16:34:24,647 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-08-22 16:34:24,647 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:34:24,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-08-22 16:34:24,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2020-08-22 16:34:24,648 INFO L87 Difference]: Start difference. First operand 117 states and 172 transitions. Second operand 18 states. [2020-08-22 16:34:25,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:34:25,584 INFO L93 Difference]: Finished difference Result 263 states and 450 transitions. [2020-08-22 16:34:25,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-08-22 16:34:25,585 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 231 [2020-08-22 16:34:25,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:34:25,588 INFO L225 Difference]: With dead ends: 263 [2020-08-22 16:34:25,589 INFO L226 Difference]: Without dead ends: 158 [2020-08-22 16:34:25,591 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 294 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=221, Invalid=1111, Unknown=0, NotChecked=0, Total=1332 [2020-08-22 16:34:25,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-08-22 16:34:25,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 148. [2020-08-22 16:34:25,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2020-08-22 16:34:25,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 227 transitions. [2020-08-22 16:34:25,638 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 227 transitions. Word has length 231 [2020-08-22 16:34:25,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:34:25,639 INFO L479 AbstractCegarLoop]: Abstraction has 148 states and 227 transitions. [2020-08-22 16:34:25,640 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-08-22 16:34:25,642 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 227 transitions. [2020-08-22 16:34:25,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 368 [2020-08-22 16:34:25,654 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:34:25,654 INFO L422 BasicCegarLoop]: trace histogram [28, 28, 25, 25, 21, 21, 14, 14, 14, 14, 14, 14, 14, 12, 12, 12, 12, 12, 12, 12, 9, 7, 7, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:34:25,855 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-08-22 16:34:25,855 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:34:25,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:34:25,857 INFO L82 PathProgramCache]: Analyzing trace with hash -80201483, now seen corresponding path program 2 times [2020-08-22 16:34:25,858 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:34:25,858 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836000104] [2020-08-22 16:34:25,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:34:25,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:26,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:34:26,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:26,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 16:34:26,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:26,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:26,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:26,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:26,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:26,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:26,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:26,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:26,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:26,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:26,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:26,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:26,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:26,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:26,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:26,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 16:34:26,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:26,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 16:34:26,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:26,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 16:34:26,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:26,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:26,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:26,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 16:34:26,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:26,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-22 16:34:26,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:26,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:26,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:26,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 16:34:26,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:26,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-08-22 16:34:26,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:26,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:26,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:26,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:26,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:26,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:26,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:26,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 16:34:26,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:26,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 16:34:26,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:26,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 16:34:26,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:26,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:26,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:26,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 16:34:26,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:26,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-08-22 16:34:26,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:26,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:26,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:26,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:26,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:26,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:26,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:26,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 16:34:26,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:26,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 16:34:26,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:26,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 16:34:26,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:26,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:26,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:26,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 16:34:26,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:26,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-08-22 16:34:26,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:26,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:26,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:26,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:26,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:26,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:26,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:26,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:26,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:26,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:26,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:26,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 16:34:26,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:26,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 16:34:26,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:26,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 16:34:26,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:26,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:26,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:26,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 16:34:26,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:26,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-22 16:34:26,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:26,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:26,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:26,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:26,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:26,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 16:34:26,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:26,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 16:34:26,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:26,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-22 16:34:26,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:26,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:26,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:26,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 16:34:26,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:26,778 INFO L134 CoverageAnalysis]: Checked inductivity of 3760 backedges. 243 proven. 571 refuted. 0 times theorem prover too weak. 2946 trivial. 0 not checked. [2020-08-22 16:34:26,779 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836000104] [2020-08-22 16:34:26,779 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [516449322] [2020-08-22 16:34:26,780 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 16:34:26,894 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-08-22 16:34:26,894 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-08-22 16:34:26,897 INFO L263 TraceCheckSpWp]: Trace formula consists of 816 conjuncts, 14 conjunts are in the unsatisfiable core [2020-08-22 16:34:26,903 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 16:34:27,096 INFO L134 CoverageAnalysis]: Checked inductivity of 3760 backedges. 193 proven. 574 refuted. 0 times theorem prover too weak. 2993 trivial. 0 not checked. [2020-08-22 16:34:27,097 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-08-22 16:34:27,097 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 17 [2020-08-22 16:34:27,097 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684360503] [2020-08-22 16:34:27,098 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-08-22 16:34:27,099 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:34:27,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-08-22 16:34:27,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2020-08-22 16:34:27,099 INFO L87 Difference]: Start difference. First operand 148 states and 227 transitions. Second operand 17 states. [2020-08-22 16:34:27,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:34:27,843 INFO L93 Difference]: Finished difference Result 326 states and 537 transitions. [2020-08-22 16:34:27,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-08-22 16:34:27,844 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 367 [2020-08-22 16:34:27,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:34:27,847 INFO L225 Difference]: With dead ends: 326 [2020-08-22 16:34:27,848 INFO L226 Difference]: Without dead ends: 191 [2020-08-22 16:34:27,849 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 502 GetRequests, 472 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=162, Invalid=830, Unknown=0, NotChecked=0, Total=992 [2020-08-22 16:34:27,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2020-08-22 16:34:27,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 148. [2020-08-22 16:34:27,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2020-08-22 16:34:27,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 218 transitions. [2020-08-22 16:34:27,871 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 218 transitions. Word has length 367 [2020-08-22 16:34:27,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:34:27,873 INFO L479 AbstractCegarLoop]: Abstraction has 148 states and 218 transitions. [2020-08-22 16:34:27,873 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-08-22 16:34:27,873 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 218 transitions. [2020-08-22 16:34:27,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 410 [2020-08-22 16:34:27,882 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:34:27,883 INFO L422 BasicCegarLoop]: trace histogram [31, 31, 28, 28, 25, 23, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 14, 11, 8, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:34:28,097 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 16:34:28,098 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:34:28,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:34:28,098 INFO L82 PathProgramCache]: Analyzing trace with hash 725561814, now seen corresponding path program 3 times [2020-08-22 16:34:28,098 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:34:28,098 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567108860] [2020-08-22 16:34:28,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:34:28,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:28,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:34:28,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:28,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 16:34:28,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:28,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:28,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:28,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:28,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:28,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:28,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:28,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:28,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:28,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:28,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:28,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:28,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:28,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:28,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:28,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 16:34:28,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:28,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 16:34:28,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:28,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 16:34:28,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:28,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:28,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:28,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 16:34:28,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:28,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-22 16:34:28,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:28,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:28,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:28,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:28,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:28,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 16:34:28,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:28,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 16:34:28,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:28,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-22 16:34:28,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:28,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:28,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:28,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:28,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:28,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 16:34:28,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:28,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 16:34:28,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:28,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-08-22 16:34:28,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:28,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:28,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:28,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:28,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:28,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:28,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:28,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:28,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:28,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:28,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:28,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 16:34:28,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:28,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 16:34:28,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:28,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 16:34:28,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:28,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:28,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:28,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 16:34:28,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:28,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-22 16:34:28,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:28,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:28,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:28,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:28,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:28,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 16:34:28,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:28,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 16:34:28,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:28,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-22 16:34:28,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:28,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:28,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:28,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:28,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:28,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 16:34:28,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:28,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 16:34:28,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:28,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2020-08-22 16:34:29,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:29,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:29,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:29,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:29,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:29,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:29,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:29,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:29,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:29,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 16:34:29,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:29,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 16:34:29,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:29,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 16:34:29,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:29,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:29,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:29,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 16:34:29,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:29,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-22 16:34:29,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:29,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:29,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:29,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:29,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:29,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 16:34:29,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:29,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 16:34:29,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:29,457 INFO L134 CoverageAnalysis]: Checked inductivity of 4709 backedges. 314 proven. 923 refuted. 0 times theorem prover too weak. 3472 trivial. 0 not checked. [2020-08-22 16:34:29,458 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567108860] [2020-08-22 16:34:29,458 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [626667591] [2020-08-22 16:34:29,458 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 16:34:29,538 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2020-08-22 16:34:29,538 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-08-22 16:34:29,540 INFO L263 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 12 conjunts are in the unsatisfiable core [2020-08-22 16:34:29,546 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 16:34:29,778 INFO L134 CoverageAnalysis]: Checked inductivity of 4709 backedges. 612 proven. 96 refuted. 0 times theorem prover too weak. 4001 trivial. 0 not checked. [2020-08-22 16:34:29,779 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-08-22 16:34:29,779 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 10] total 21 [2020-08-22 16:34:29,779 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534409084] [2020-08-22 16:34:29,780 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-08-22 16:34:29,781 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:34:29,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-08-22 16:34:29,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=363, Unknown=0, NotChecked=0, Total=420 [2020-08-22 16:34:29,781 INFO L87 Difference]: Start difference. First operand 148 states and 218 transitions. Second operand 21 states. [2020-08-22 16:34:30,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:34:30,928 INFO L93 Difference]: Finished difference Result 379 states and 615 transitions. [2020-08-22 16:34:30,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-08-22 16:34:30,929 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 409 [2020-08-22 16:34:30,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:34:30,934 INFO L225 Difference]: With dead ends: 379 [2020-08-22 16:34:30,934 INFO L226 Difference]: Without dead ends: 233 [2020-08-22 16:34:30,937 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 570 GetRequests, 524 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 477 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=312, Invalid=1944, Unknown=0, NotChecked=0, Total=2256 [2020-08-22 16:34:30,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2020-08-22 16:34:30,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 171. [2020-08-22 16:34:30,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2020-08-22 16:34:30,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 250 transitions. [2020-08-22 16:34:30,965 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 250 transitions. Word has length 409 [2020-08-22 16:34:30,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:34:30,968 INFO L479 AbstractCegarLoop]: Abstraction has 171 states and 250 transitions. [2020-08-22 16:34:30,968 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-08-22 16:34:30,969 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 250 transitions. [2020-08-22 16:34:30,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 423 [2020-08-22 16:34:30,978 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:34:30,978 INFO L422 BasicCegarLoop]: trace histogram [31, 31, 30, 30, 25, 24, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 10, 9, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:34:31,194 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 16:34:31,194 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:34:31,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:34:31,195 INFO L82 PathProgramCache]: Analyzing trace with hash -515597281, now seen corresponding path program 4 times [2020-08-22 16:34:31,195 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:34:31,195 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157393436] [2020-08-22 16:34:31,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:34:31,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:31,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:34:31,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:31,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 16:34:31,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:31,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:31,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:31,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:31,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:31,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:31,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:31,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:31,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:31,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:31,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:31,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:31,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:32,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:32,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:32,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 16:34:32,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:32,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 16:34:32,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:32,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 16:34:32,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:32,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:32,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:32,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 16:34:32,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:32,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-22 16:34:32,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:32,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:32,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:32,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:32,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:32,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 16:34:32,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:32,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 16:34:32,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:32,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-22 16:34:32,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:32,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:32,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:32,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:32,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:32,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:32,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:32,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 16:34:32,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:32,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 16:34:32,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:32,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 16:34:32,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:32,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:32,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:32,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 16:34:32,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:32,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-08-22 16:34:32,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:32,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:32,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:32,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:32,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:32,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:32,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:32,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 16:34:32,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:32,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 16:34:32,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:32,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 16:34:32,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:32,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:32,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:32,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 16:34:32,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:32,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-08-22 16:34:32,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:32,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:32,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:32,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:32,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:32,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:32,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:32,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:32,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:32,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:32,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:32,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 16:34:32,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:32,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 16:34:32,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:32,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 16:34:32,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:32,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:32,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:32,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 16:34:32,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:32,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-22 16:34:32,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:32,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:32,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:32,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:32,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:32,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 16:34:32,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:32,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 16:34:32,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:32,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-22 16:34:32,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:32,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:32,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:32,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:32,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:32,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:32,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:32,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 16:34:32,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:32,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 16:34:32,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:32,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 16:34:32,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:32,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:32,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:32,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 16:34:32,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:32,626 INFO L134 CoverageAnalysis]: Checked inductivity of 5016 backedges. 433 proven. 1032 refuted. 0 times theorem prover too weak. 3551 trivial. 0 not checked. [2020-08-22 16:34:32,627 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157393436] [2020-08-22 16:34:32,627 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [725550617] [2020-08-22 16:34:32,627 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 16:34:32,733 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-08-22 16:34:32,733 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-08-22 16:34:32,735 INFO L263 TraceCheckSpWp]: Trace formula consists of 753 conjuncts, 14 conjunts are in the unsatisfiable core [2020-08-22 16:34:32,743 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 16:34:33,020 INFO L134 CoverageAnalysis]: Checked inductivity of 5016 backedges. 397 proven. 499 refuted. 0 times theorem prover too weak. 4120 trivial. 0 not checked. [2020-08-22 16:34:33,020 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-08-22 16:34:33,021 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 11] total 20 [2020-08-22 16:34:33,021 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130444337] [2020-08-22 16:34:33,022 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-08-22 16:34:33,022 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:34:33,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-08-22 16:34:33,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2020-08-22 16:34:33,023 INFO L87 Difference]: Start difference. First operand 171 states and 250 transitions. Second operand 20 states. [2020-08-22 16:34:34,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:34:34,189 INFO L93 Difference]: Finished difference Result 409 states and 659 transitions. [2020-08-22 16:34:34,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-08-22 16:34:34,190 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 422 [2020-08-22 16:34:34,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:34:34,196 INFO L225 Difference]: With dead ends: 409 [2020-08-22 16:34:34,196 INFO L226 Difference]: Without dead ends: 241 [2020-08-22 16:34:34,200 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 588 GetRequests, 543 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 456 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=313, Invalid=1849, Unknown=0, NotChecked=0, Total=2162 [2020-08-22 16:34:34,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2020-08-22 16:34:34,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 172. [2020-08-22 16:34:34,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2020-08-22 16:34:34,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 253 transitions. [2020-08-22 16:34:34,218 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 253 transitions. Word has length 422 [2020-08-22 16:34:34,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:34:34,219 INFO L479 AbstractCegarLoop]: Abstraction has 172 states and 253 transitions. [2020-08-22 16:34:34,219 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-08-22 16:34:34,219 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 253 transitions. [2020-08-22 16:34:34,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 573 [2020-08-22 16:34:34,231 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:34:34,231 INFO L422 BasicCegarLoop]: trace histogram [42, 42, 41, 41, 34, 33, 21, 21, 21, 21, 21, 21, 21, 20, 20, 20, 20, 20, 20, 20, 14, 12, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:34:34,445 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-08-22 16:34:34,445 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:34:34,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:34:34,447 INFO L82 PathProgramCache]: Analyzing trace with hash 2122481566, now seen corresponding path program 5 times [2020-08-22 16:34:34,447 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:34:34,447 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302906866] [2020-08-22 16:34:34,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:34:34,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:34,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:34:34,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:34,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 16:34:34,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:35,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:35,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:35,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:35,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:35,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:35,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:35,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:35,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:35,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:35,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:35,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:35,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:35,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:35,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:35,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 16:34:35,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:35,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 16:34:35,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:35,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 16:34:35,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:35,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:35,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:35,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 16:34:35,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:35,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-22 16:34:35,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:35,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:35,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:35,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:35,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:35,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 16:34:35,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:35,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 16:34:35,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:35,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-22 16:34:35,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:35,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:35,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:35,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:35,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:35,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:35,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:35,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 16:34:35,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:35,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 16:34:35,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:35,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 16:34:35,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:35,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:35,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:35,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 16:34:35,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:35,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-08-22 16:34:35,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:35,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:35,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:35,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:35,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:35,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:35,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:35,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:35,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:35,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 16:34:35,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:35,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 16:34:35,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:35,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 16:34:35,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:35,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:35,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:35,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 16:34:35,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:35,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-22 16:34:35,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:35,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:35,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:35,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:35,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:35,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 16:34:35,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:35,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 16:34:35,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:35,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-08-22 16:34:35,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:35,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:35,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:35,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:35,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:35,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:35,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:35,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:35,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:35,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:35,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:35,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:36,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:36,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 16:34:36,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:36,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 16:34:36,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:36,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 16:34:36,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:36,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:36,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:36,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 16:34:36,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:36,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-22 16:34:36,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:36,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:36,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:36,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:36,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:36,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 16:34:36,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:36,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 16:34:36,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:36,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-22 16:34:36,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:36,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:36,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:36,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:36,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:36,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:36,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:36,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 16:34:36,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:36,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 16:34:36,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:36,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 16:34:36,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:36,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:36,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:36,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 16:34:36,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:36,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-08-22 16:34:36,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:36,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:36,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:36,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:36,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:36,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:36,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:36,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:36,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:36,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 16:34:36,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:36,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 16:34:36,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:36,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 16:34:36,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:36,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:36,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:36,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 16:34:36,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:36,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-22 16:34:36,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:36,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:36,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:36,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:36,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:36,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 16:34:36,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:36,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 16:34:36,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:36,735 INFO L134 CoverageAnalysis]: Checked inductivity of 9413 backedges. 913 proven. 1781 refuted. 0 times theorem prover too weak. 6719 trivial. 0 not checked. [2020-08-22 16:34:36,736 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302906866] [2020-08-22 16:34:36,736 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [581774143] [2020-08-22 16:34:36,736 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 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 16:34:36,958 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 32 check-sat command(s) [2020-08-22 16:34:36,958 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-08-22 16:34:36,961 INFO L263 TraceCheckSpWp]: Trace formula consists of 1107 conjuncts, 24 conjunts are in the unsatisfiable core [2020-08-22 16:34:36,971 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 16:34:37,335 INFO L134 CoverageAnalysis]: Checked inductivity of 9413 backedges. 1177 proven. 1149 refuted. 0 times theorem prover too weak. 7087 trivial. 0 not checked. [2020-08-22 16:34:37,336 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-08-22 16:34:37,336 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 18] total 28 [2020-08-22 16:34:37,336 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167103978] [2020-08-22 16:34:37,337 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-08-22 16:34:37,338 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:34:37,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-08-22 16:34:37,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=666, Unknown=0, NotChecked=0, Total=756 [2020-08-22 16:34:37,339 INFO L87 Difference]: Start difference. First operand 172 states and 253 transitions. Second operand 28 states. [2020-08-22 16:34:39,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:34:39,115 INFO L93 Difference]: Finished difference Result 429 states and 741 transitions. [2020-08-22 16:34:39,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2020-08-22 16:34:39,120 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 572 [2020-08-22 16:34:39,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:34:39,126 INFO L225 Difference]: With dead ends: 429 [2020-08-22 16:34:39,126 INFO L226 Difference]: Without dead ends: 261 [2020-08-22 16:34:39,130 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 795 GetRequests, 732 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1048 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=559, Invalid=3601, Unknown=0, NotChecked=0, Total=4160 [2020-08-22 16:34:39,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2020-08-22 16:34:39,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 204. [2020-08-22 16:34:39,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 204 states. [2020-08-22 16:34:39,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 304 transitions. [2020-08-22 16:34:39,149 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 304 transitions. Word has length 572 [2020-08-22 16:34:39,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:34:39,150 INFO L479 AbstractCegarLoop]: Abstraction has 204 states and 304 transitions. [2020-08-22 16:34:39,150 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-08-22 16:34:39,150 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 304 transitions. [2020-08-22 16:34:39,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 464 [2020-08-22 16:34:39,154 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:34:39,155 INFO L422 BasicCegarLoop]: trace histogram [34, 34, 33, 33, 27, 27, 17, 17, 17, 17, 17, 17, 17, 16, 16, 16, 16, 16, 16, 16, 11, 10, 7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:34:39,364 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2020-08-22 16:34:39,365 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:34:39,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:34:39,366 INFO L82 PathProgramCache]: Analyzing trace with hash 1326629730, now seen corresponding path program 6 times [2020-08-22 16:34:39,366 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:34:39,366 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101408739] [2020-08-22 16:34:39,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:34:39,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:39,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:34:39,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:39,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 16:34:39,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:39,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:40,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:40,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:40,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:40,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:40,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:40,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:40,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:40,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:40,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:40,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:40,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:40,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:40,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:40,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 16:34:40,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:40,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 16:34:40,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:40,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 16:34:40,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:40,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:40,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:40,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 16:34:40,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:40,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-22 16:34:40,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:40,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:40,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:40,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:40,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:40,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 16:34:40,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:40,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 16:34:40,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:41,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-22 16:34:41,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:41,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:41,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:41,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:41,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:41,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:41,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:41,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 16:34:41,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:41,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 16:34:41,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:41,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 16:34:41,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:41,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:41,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:41,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 16:34:41,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:41,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-08-22 16:34:41,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:41,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:41,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:41,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:41,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:41,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:41,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:41,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:41,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:41,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 16:34:41,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:41,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 16:34:41,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:41,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 16:34:41,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:41,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:41,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:41,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 16:34:41,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:41,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-22 16:34:41,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:41,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:41,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:41,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:41,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:41,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 16:34:41,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:41,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 16:34:41,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:41,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-08-22 16:34:41,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:41,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:41,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:41,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:41,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:42,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:42,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:42,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:42,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:42,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:42,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:42,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 16:34:42,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:42,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 16:34:42,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:42,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 16:34:42,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:42,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:42,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:42,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 16:34:42,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:42,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-22 16:34:42,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:42,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:42,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:42,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:42,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:42,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 16:34:42,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:42,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 16:34:42,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:42,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-22 16:34:42,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:42,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:42,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:42,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:42,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:42,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:42,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:42,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 16:34:42,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:42,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 16:34:42,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:42,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 16:34:42,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:42,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:42,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:42,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 16:34:42,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:42,649 INFO L134 CoverageAnalysis]: Checked inductivity of 6082 backedges. 0 proven. 2033 refuted. 0 times theorem prover too weak. 4049 trivial. 0 not checked. [2020-08-22 16:34:42,650 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101408739] [2020-08-22 16:34:42,650 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1407813402] [2020-08-22 16:34:42,650 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 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 16:34:42,852 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 32 check-sat command(s) [2020-08-22 16:34:42,853 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-08-22 16:34:42,864 INFO L263 TraceCheckSpWp]: Trace formula consists of 1029 conjuncts, 271 conjunts are in the unsatisfiable core [2020-08-22 16:34:42,874 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 16:34:44,977 INFO L134 CoverageAnalysis]: Checked inductivity of 6082 backedges. 0 proven. 2033 refuted. 0 times theorem prover too weak. 4049 trivial. 0 not checked. [2020-08-22 16:34:44,978 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-08-22 16:34:44,978 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 52 [2020-08-22 16:34:44,978 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760321418] [2020-08-22 16:34:44,979 INFO L459 AbstractCegarLoop]: Interpolant automaton has 52 states [2020-08-22 16:34:44,979 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:34:44,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2020-08-22 16:34:44,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=2527, Unknown=0, NotChecked=0, Total=2652 [2020-08-22 16:34:44,981 INFO L87 Difference]: Start difference. First operand 204 states and 304 transitions. Second operand 52 states. [2020-08-22 16:34:46,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:34:46,005 INFO L93 Difference]: Finished difference Result 223 states and 340 transitions. [2020-08-22 16:34:46,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-08-22 16:34:46,006 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 463 [2020-08-22 16:34:46,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:34:46,010 INFO L225 Difference]: With dead ends: 223 [2020-08-22 16:34:46,011 INFO L226 Difference]: Without dead ends: 219 [2020-08-22 16:34:46,012 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 735 GetRequests, 651 SyntacticMatches, 34 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 273 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=125, Invalid=2527, Unknown=0, NotChecked=0, Total=2652 [2020-08-22 16:34:46,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2020-08-22 16:34:46,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 212. [2020-08-22 16:34:46,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 212 states. [2020-08-22 16:34:46,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 317 transitions. [2020-08-22 16:34:46,029 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 317 transitions. Word has length 463 [2020-08-22 16:34:46,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:34:46,030 INFO L479 AbstractCegarLoop]: Abstraction has 212 states and 317 transitions. [2020-08-22 16:34:46,030 INFO L480 AbstractCegarLoop]: Interpolant automaton has 52 states. [2020-08-22 16:34:46,030 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 317 transitions. [2020-08-22 16:34:46,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 505 [2020-08-22 16:34:46,034 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:34:46,035 INFO L422 BasicCegarLoop]: trace histogram [38, 38, 35, 35, 30, 29, 19, 19, 19, 19, 19, 19, 19, 17, 17, 17, 17, 17, 17, 17, 13, 10, 8, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:34:46,249 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-08-22 16:34:46,249 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:34:46,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:34:46,250 INFO L82 PathProgramCache]: Analyzing trace with hash -6928239, now seen corresponding path program 7 times [2020-08-22 16:34:46,250 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:34:46,250 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415098398] [2020-08-22 16:34:46,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:34:46,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:46,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:34:46,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:46,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 16:34:46,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:46,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:46,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:46,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:46,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:46,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:46,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:46,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:46,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:46,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:46,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:46,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:46,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:46,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:46,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:46,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:46,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:46,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 16:34:46,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:46,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 16:34:46,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:46,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 16:34:46,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:46,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:46,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:46,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 16:34:46,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:46,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-22 16:34:46,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:46,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:46,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:46,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:46,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:46,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 16:34:46,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:46,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 16:34:46,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:46,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-22 16:34:46,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:46,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:46,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:46,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:46,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:46,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 16:34:46,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:46,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 16:34:46,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:46,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-08-22 16:34:46,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:46,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:46,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:46,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:46,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:46,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:46,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:46,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 16:34:46,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:46,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 16:34:46,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:46,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 16:34:46,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:46,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:46,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:46,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 16:34:46,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:47,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2020-08-22 16:34:47,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:47,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:47,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:47,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:47,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:47,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:47,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:47,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:47,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:47,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 16:34:47,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:47,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 16:34:47,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:47,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 16:34:47,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:47,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:47,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:47,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 16:34:47,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:47,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-22 16:34:47,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:47,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:47,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:47,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:47,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:47,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 16:34:47,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:47,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 16:34:47,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:47,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 323 [2020-08-22 16:34:47,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:47,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:47,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:47,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:47,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:47,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:47,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:47,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:47,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:47,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:47,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:47,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 16:34:47,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:47,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 16:34:47,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:47,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 16:34:47,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:47,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:47,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:47,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 16:34:47,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:47,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-22 16:34:47,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:47,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:47,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:47,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:47,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:47,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 16:34:47,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:47,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 16:34:47,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:47,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-22 16:34:47,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:47,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:47,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:47,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:47,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:47,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:47,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:47,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 16:34:47,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:47,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 16:34:47,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:47,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 16:34:47,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:47,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 16:34:47,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:47,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 16:34:47,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:47,534 INFO L134 CoverageAnalysis]: Checked inductivity of 7261 backedges. 394 proven. 1280 refuted. 0 times theorem prover too weak. 5587 trivial. 0 not checked. [2020-08-22 16:34:47,535 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415098398] [2020-08-22 16:34:47,535 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2109253230] [2020-08-22 16:34:47,535 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 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 16:34:47,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:34:47,681 INFO L263 TraceCheckSpWp]: Trace formula consists of 1120 conjuncts, 20 conjunts are in the unsatisfiable core [2020-08-22 16:34:47,690 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 16:34:47,980 INFO L134 CoverageAnalysis]: Checked inductivity of 7261 backedges. 291 proven. 1311 refuted. 0 times theorem prover too weak. 5659 trivial. 0 not checked. [2020-08-22 16:34:47,980 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-08-22 16:34:47,981 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 21 [2020-08-22 16:34:47,981 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519415555] [2020-08-22 16:34:47,982 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-08-22 16:34:47,982 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:34:47,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-08-22 16:34:47,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=360, Unknown=0, NotChecked=0, Total=420 [2020-08-22 16:34:47,983 INFO L87 Difference]: Start difference. First operand 212 states and 317 transitions. Second operand 21 states. [2020-08-22 16:34:48,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:34:48,753 INFO L93 Difference]: Finished difference Result 449 states and 743 transitions. [2020-08-22 16:34:48,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-08-22 16:34:48,754 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 504 [2020-08-22 16:34:48,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:34:48,755 INFO L225 Difference]: With dead ends: 449 [2020-08-22 16:34:48,755 INFO L226 Difference]: Without dead ends: 0 [2020-08-22 16:34:48,761 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 683 GetRequests, 648 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 235 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=198, Invalid=1134, Unknown=0, NotChecked=0, Total=1332 [2020-08-22 16:34:48,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-22 16:34:48,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-22 16:34:48,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-22 16:34:48,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-22 16:34:48,762 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 504 [2020-08-22 16:34:48,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:34:48,763 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-22 16:34:48,763 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-08-22 16:34:48,763 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-22 16:34:48,763 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-22 16:34:48,973 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 16:34:48,977 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-22 16:34:51,011 WARN L193 SmtUtils]: Spent 401.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 7 [2020-08-22 16:34:51,204 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 1 [2020-08-22 16:34:51,450 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 1 [2020-08-22 16:34:52,033 WARN L193 SmtUtils]: Spent 569.00 ms on a formula simplification. DAG size of input: 161 DAG size of output: 20 [2020-08-22 16:34:52,430 WARN L193 SmtUtils]: Spent 391.00 ms on a formula simplification. DAG size of input: 177 DAG size of output: 6 [2020-08-22 16:34:53,095 WARN L193 SmtUtils]: Spent 654.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 36 [2020-08-22 16:34:53,100 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-08-22 16:34:53,100 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-08-22 16:34:53,101 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-08-22 16:34:53,101 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-08-22 16:34:53,101 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-08-22 16:34:53,101 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-08-22 16:34:53,101 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 39) no Hoare annotation was computed. [2020-08-22 16:34:53,101 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 35 42) the Hoare annotation is: true [2020-08-22 16:34:53,101 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 35 42) no Hoare annotation was computed. [2020-08-22 16:34:53,102 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 35 42) no Hoare annotation was computed. [2020-08-22 16:34:53,102 INFO L268 CegarLoopResult]: For program point L39(line 39) no Hoare annotation was computed. [2020-08-22 16:34:53,102 INFO L268 CegarLoopResult]: For program point L38(lines 38 40) no Hoare annotation was computed. [2020-08-22 16:34:53,102 INFO L264 CegarLoopResult]: At program point L37(line 37) the Hoare annotation is: (and (<= 8 main_~x~0) (<= main_~x~0 8)) [2020-08-22 16:34:53,102 INFO L268 CegarLoopResult]: For program point L37-1(line 37) no Hoare annotation was computed. [2020-08-22 16:34:53,102 INFO L268 CegarLoopResult]: For program point L38-2(lines 38 40) no Hoare annotation was computed. [2020-08-22 16:34:53,102 INFO L271 CegarLoopResult]: At program point fibo2ENTRY(lines 17 25) the Hoare annotation is: true [2020-08-22 16:34:53,102 INFO L264 CegarLoopResult]: At program point L23(line 23) the Hoare annotation is: (and (= fibo2_~n |fibo2_#in~n|) (not (<= |fibo2_#in~n| 3))) [2020-08-22 16:34:53,103 INFO L268 CegarLoopResult]: For program point L23-1(line 23) no Hoare annotation was computed. [2020-08-22 16:34:53,103 INFO L264 CegarLoopResult]: At program point L23-2(line 23) the Hoare annotation is: (let ((.cse0 (= fibo2_~n |fibo2_#in~n|))) (or (and (<= 7 |fibo2_#in~n|) .cse0 (<= 8 |fibo2_#t~ret2|) (<= |fibo2_#t~ret2| 8)) (and .cse0 (<= 8 |fibo2_#in~n|)) (and (<= |fibo2_#in~n| 6) (<= 5 |fibo2_#t~ret2|) (<= |fibo2_#t~ret2| 5) .cse0 (<= 6 |fibo2_#in~n|)))) [2020-08-22 16:34:53,103 INFO L268 CegarLoopResult]: For program point L20(lines 20 24) no Hoare annotation was computed. [2020-08-22 16:34:53,103 INFO L268 CegarLoopResult]: For program point L23-3(line 23) no Hoare annotation was computed. [2020-08-22 16:34:53,103 INFO L268 CegarLoopResult]: For program point L18(lines 18 24) no Hoare annotation was computed. [2020-08-22 16:34:53,103 INFO L268 CegarLoopResult]: For program point fibo2FINAL(lines 17 25) no Hoare annotation was computed. [2020-08-22 16:34:53,104 INFO L268 CegarLoopResult]: For program point fibo2EXIT(lines 17 25) no Hoare annotation was computed. [2020-08-22 16:34:53,104 INFO L271 CegarLoopResult]: At program point fibo1ENTRY(lines 7 15) the Hoare annotation is: true [2020-08-22 16:34:53,104 INFO L264 CegarLoopResult]: At program point L13(line 13) the Hoare annotation is: (and (<= 2 |fibo1_#in~n|) (= fibo1_~n |fibo1_#in~n|)) [2020-08-22 16:34:53,104 INFO L268 CegarLoopResult]: For program point L13-1(line 13) no Hoare annotation was computed. [2020-08-22 16:34:53,104 INFO L264 CegarLoopResult]: At program point L13-2(line 13) the Hoare annotation is: (let ((.cse0 (= fibo1_~n |fibo1_#in~n|))) (and (or (and (<= |fibo1_#in~n| 5) (<= 3 |fibo1_#t~ret0|) (<= 5 |fibo1_#in~n|) .cse0 (<= |fibo1_#t~ret0| 3)) (<= |fibo1_#in~n| 2) (and (<= 7 |fibo1_#in~n|) (or (and .cse0 (<= |fibo1_#in~n| 7)) (and (<= 13 |fibo1_#t~ret0|) .cse0 (<= |fibo1_#t~ret0| 13)))) (and .cse0 (<= 9 |fibo1_#in~n|))) (or (and (<= |fibo1_#t~ret0| 1) (<= 1 |fibo1_#t~ret0|) (<= 2 |fibo1_#in~n|) .cse0) (not (<= |fibo1_#in~n| 3))))) [2020-08-22 16:34:53,104 INFO L268 CegarLoopResult]: For program point fibo1FINAL(lines 7 15) no Hoare annotation was computed. [2020-08-22 16:34:53,104 INFO L268 CegarLoopResult]: For program point L10(lines 10 14) no Hoare annotation was computed. [2020-08-22 16:34:53,104 INFO L268 CegarLoopResult]: For program point L13-3(line 13) no Hoare annotation was computed. [2020-08-22 16:34:53,105 INFO L268 CegarLoopResult]: For program point L8(lines 8 14) no Hoare annotation was computed. [2020-08-22 16:34:53,105 INFO L268 CegarLoopResult]: For program point fibo1EXIT(lines 7 15) no Hoare annotation was computed. [2020-08-22 16:34:53,111 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 04:34:53 BoogieIcfgContainer [2020-08-22 16:34:53,111 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 16:34:53,113 INFO L168 Benchmark]: Toolchain (without parser) took 38868.39 ms. Allocated memory was 146.3 MB in the beginning and 988.8 MB in the end (delta: 842.5 MB). Free memory was 102.9 MB in the beginning and 370.7 MB in the end (delta: -267.7 MB). Peak memory consumption was 860.4 MB. Max. memory is 7.1 GB. [2020-08-22 16:34:53,114 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 146.3 MB. Free memory was 120.9 MB in the beginning and 120.5 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. [2020-08-22 16:34:53,114 INFO L168 Benchmark]: CACSL2BoogieTranslator took 284.24 ms. Allocated memory is still 146.3 MB. Free memory was 102.5 MB in the beginning and 92.9 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. [2020-08-22 16:34:53,115 INFO L168 Benchmark]: Boogie Preprocessor took 170.25 ms. Allocated memory was 146.3 MB in the beginning and 203.4 MB in the end (delta: 57.1 MB). Free memory was 92.9 MB in the beginning and 181.9 MB in the end (delta: -88.9 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. [2020-08-22 16:34:53,116 INFO L168 Benchmark]: RCFGBuilder took 338.88 ms. Allocated memory is still 203.4 MB. Free memory was 181.9 MB in the beginning and 168.2 MB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. [2020-08-22 16:34:53,116 INFO L168 Benchmark]: TraceAbstraction took 38067.44 ms. Allocated memory was 203.4 MB in the beginning and 988.8 MB in the end (delta: 785.4 MB). Free memory was 168.2 MB in the beginning and 370.7 MB in the end (delta: -202.4 MB). Peak memory consumption was 868.6 MB. Max. memory is 7.1 GB. [2020-08-22 16:34:53,119 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 146.3 MB. Free memory was 120.9 MB in the beginning and 120.5 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 284.24 ms. Allocated memory is still 146.3 MB. Free memory was 102.5 MB in the beginning and 92.9 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 170.25 ms. Allocated memory was 146.3 MB in the beginning and 203.4 MB in the end (delta: 57.1 MB). Free memory was 92.9 MB in the beginning and 181.9 MB in the end (delta: -88.9 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 338.88 ms. Allocated memory is still 203.4 MB. Free memory was 181.9 MB in the beginning and 168.2 MB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 38067.44 ms. Allocated memory was 203.4 MB in the beginning and 988.8 MB in the end (delta: 785.4 MB). Free memory was 168.2 MB in the beginning and 370.7 MB in the end (delta: -202.4 MB). Peak memory consumption was 868.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 39]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 33 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 33.8s, OverallIterations: 16, TraceHistogramMax: 42, AutomataDifference: 11.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 4.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 599 SDtfs, 1023 SDslu, 6753 SDs, 0 SdLazy, 8332 SolverSat, 1134 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4868 GetRequests, 4383 SyntacticMatches, 34 SemanticMatches, 451 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3223 ImplicationChecksByTransitivity, 8.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=212occurred in iteration=15, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 16 MinimizatonAttempts, 357 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 11 LocationsWithAnnotation, 959 PreInvPairs, 1535 NumberOfFragments, 133 HoareAnnotationTreeSize, 959 FomulaSimplifications, 38034 FormulaSimplificationTreeSizeReduction, 1.6s HoareSimplificationTime, 11 FomulaSimplificationsInter, 54951 FormulaSimplificationTreeSizeReductionInter, 2.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.3s SatisfiabilityAnalysisTime, 16.0s InterpolantComputationTime, 6745 NumberOfCodeBlocks, 6323 NumberOfCodeBlocksAsserted, 99 NumberOfCheckSat, 6715 ConstructedInterpolants, 0 QuantifiedInterpolants, 4810131 SizeOfPredicates, 83 NumberOfNonLiveVariables, 6489 ConjunctsInSsa, 435 ConjunctsInUnsatCore, 30 InterpolantComputations, 2 PerfectInterpolantSequences, 62075/76456 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...