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/nla-digbench/lcm2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-08 03:26:27,092 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-08 03:26:27,094 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-08 03:26:27,112 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-08 03:26:27,113 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-08 03:26:27,114 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-08 03:26:27,117 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-08 03:26:27,129 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-08 03:26:27,130 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-08 03:26:27,132 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-08 03:26:27,135 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-08 03:26:27,137 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-08 03:26:27,137 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-08 03:26:27,140 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-08 03:26:27,142 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-08 03:26:27,144 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-08 03:26:27,145 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-08 03:26:27,148 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-08 03:26:27,151 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-08 03:26:27,154 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-08 03:26:27,157 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-08 03:26:27,159 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-08 03:26:27,162 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-08 03:26:27,163 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-08 03:26:27,165 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-08 03:26:27,175 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-08 03:26:27,176 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-08 03:26:27,177 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-08 03:26:27,178 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 [2019-09-08 03:26:27,197 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-08 03:26:27,197 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-08 03:26:27,199 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-08 03:26:27,200 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-08 03:26:27,200 INFO L138 SettingsManager]: * Use SBE=true [2019-09-08 03:26:27,200 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-08 03:26:27,200 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-08 03:26:27,200 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-08 03:26:27,201 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-08 03:26:27,201 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-08 03:26:27,202 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-08 03:26:27,202 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-08 03:26:27,202 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-08 03:26:27,203 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-08 03:26:27,203 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-08 03:26:27,203 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-08 03:26:27,203 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-08 03:26:27,203 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-08 03:26:27,204 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-08 03:26:27,204 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-08 03:26:27,204 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-08 03:26:27,204 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-08 03:26:27,204 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-08 03:26:27,205 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-08 03:26:27,205 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-08 03:26:27,205 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-08 03:26:27,205 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-08 03:26:27,205 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-08 03:26:27,206 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-08 03:26:27,255 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-08 03:26:27,273 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-08 03:26:27,278 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-08 03:26:27,279 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-08 03:26:27,279 INFO L275 PluginConnector]: CDTParser initialized [2019-09-08 03:26:27,280 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench/lcm2.c [2019-09-08 03:26:27,336 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c4a6bea99/46de3ca99ad544359c15079bb7b687b2/FLAGe3376561f [2019-09-08 03:26:27,715 INFO L306 CDTParser]: Found 1 translation units. [2019-09-08 03:26:27,716 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench/lcm2.c [2019-09-08 03:26:27,722 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c4a6bea99/46de3ca99ad544359c15079bb7b687b2/FLAGe3376561f [2019-09-08 03:26:28,095 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c4a6bea99/46de3ca99ad544359c15079bb7b687b2 [2019-09-08 03:26:28,108 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-08 03:26:28,110 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-08 03:26:28,112 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-08 03:26:28,113 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-08 03:26:28,116 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-08 03:26:28,117 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.09 03:26:28" (1/1) ... [2019-09-08 03:26:28,120 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@335c662c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 03:26:28, skipping insertion in model container [2019-09-08 03:26:28,120 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.09 03:26:28" (1/1) ... [2019-09-08 03:26:28,127 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-08 03:26:28,144 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-08 03:26:28,292 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-08 03:26:28,296 INFO L188 MainTranslator]: Completed pre-run [2019-09-08 03:26:28,312 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-08 03:26:28,323 INFO L192 MainTranslator]: Completed translation [2019-09-08 03:26:28,324 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 03:26:28 WrapperNode [2019-09-08 03:26:28,324 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-08 03:26:28,325 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-08 03:26:28,325 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-08 03:26:28,325 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-08 03:26:28,422 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 03:26:28" (1/1) ... [2019-09-08 03:26:28,422 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 03:26:28" (1/1) ... [2019-09-08 03:26:28,427 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 03:26:28" (1/1) ... [2019-09-08 03:26:28,427 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 03:26:28" (1/1) ... [2019-09-08 03:26:28,431 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 03:26:28" (1/1) ... [2019-09-08 03:26:28,439 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 03:26:28" (1/1) ... [2019-09-08 03:26:28,440 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 03:26:28" (1/1) ... [2019-09-08 03:26:28,442 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-08 03:26:28,442 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-08 03:26:28,442 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-08 03:26:28,442 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-08 03:26:28,443 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 03:26:28" (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 [2019-09-08 03:26:28,498 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-08 03:26:28,499 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-08 03:26:28,499 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-09-08 03:26:28,499 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-08 03:26:28,499 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-08 03:26:28,499 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-08 03:26:28,499 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-09-08 03:26:28,500 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-09-08 03:26:28,500 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-08 03:26:28,500 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-08 03:26:28,500 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-08 03:26:28,676 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-08 03:26:28,676 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-08 03:26:28,678 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.09 03:26:28 BoogieIcfgContainer [2019-09-08 03:26:28,678 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-08 03:26:28,685 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-08 03:26:28,686 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-08 03:26:28,690 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-08 03:26:28,691 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.09 03:26:28" (1/3) ... [2019-09-08 03:26:28,692 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64b1f8d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.09 03:26:28, skipping insertion in model container [2019-09-08 03:26:28,692 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 03:26:28" (2/3) ... [2019-09-08 03:26:28,693 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64b1f8d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.09 03:26:28, skipping insertion in model container [2019-09-08 03:26:28,703 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.09 03:26:28" (3/3) ... [2019-09-08 03:26:28,709 INFO L109 eAbstractionObserver]: Analyzing ICFG lcm2.c [2019-09-08 03:26:28,732 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-08 03:26:28,750 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-08 03:26:28,782 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-08 03:26:28,813 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-08 03:26:28,814 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-08 03:26:28,814 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-08 03:26:28,814 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-08 03:26:28,814 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-08 03:26:28,814 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-08 03:26:28,815 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-08 03:26:28,815 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-08 03:26:28,815 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-08 03:26:28,829 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2019-09-08 03:26:28,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-09-08 03:26:28,833 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 03:26:28,834 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 03:26:28,836 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 03:26:28,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 03:26:28,840 INFO L82 PathProgramCache]: Analyzing trace with hash -858950785, now seen corresponding path program 1 times [2019-09-08 03:26:28,842 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 03:26:28,842 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 03:26:28,883 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 03:26:28,883 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 03:26:28,883 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 03:26:28,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 03:26:28,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 03:26:28,954 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 03:26:28,955 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-08 03:26:28,958 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-08 03:26:28,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-08 03:26:28,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-08 03:26:28,970 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 2 states. [2019-09-08 03:26:28,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 03:26:28,988 INFO L93 Difference]: Finished difference Result 37 states and 49 transitions. [2019-09-08 03:26:28,988 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-08 03:26:28,989 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-09-08 03:26:28,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 03:26:28,998 INFO L225 Difference]: With dead ends: 37 [2019-09-08 03:26:28,998 INFO L226 Difference]: Without dead ends: 16 [2019-09-08 03:26:29,002 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-08 03:26:29,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-09-08 03:26:29,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2019-09-08 03:26:29,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-09-08 03:26:29,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2019-09-08 03:26:29,051 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 10 [2019-09-08 03:26:29,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 03:26:29,053 INFO L475 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2019-09-08 03:26:29,053 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-08 03:26:29,053 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2019-09-08 03:26:29,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-09-08 03:26:29,056 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 03:26:29,056 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 03:26:29,057 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 03:26:29,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 03:26:29,060 INFO L82 PathProgramCache]: Analyzing trace with hash -871939661, now seen corresponding path program 1 times [2019-09-08 03:26:29,060 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 03:26:29,060 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 03:26:29,063 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 03:26:29,063 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 03:26:29,063 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 03:26:29,090 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-09-08 03:26:29,090 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-09-08 03:26:29,091 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP 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) [2019-09-08 03:26:29,109 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-09-08 03:26:29,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 03:26:29,148 INFO L256 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 15 conjunts are in the unsatisfiable core [2019-09-08 03:26:29,157 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 03:26:29,241 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 03:26:29,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 03:26:29,275 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 03:26:29,275 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-08 03:26:29,277 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-08 03:26:29,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-08 03:26:29,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-08 03:26:29,278 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand 5 states. [2019-09-08 03:26:29,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 03:26:29,354 INFO L93 Difference]: Finished difference Result 27 states and 31 transitions. [2019-09-08 03:26:29,354 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-08 03:26:29,354 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2019-09-08 03:26:29,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 03:26:29,356 INFO L225 Difference]: With dead ends: 27 [2019-09-08 03:26:29,357 INFO L226 Difference]: Without dead ends: 24 [2019-09-08 03:26:29,358 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-09-08 03:26:29,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2019-09-08 03:26:29,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 23. [2019-09-08 03:26:29,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-09-08 03:26:29,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2019-09-08 03:26:29,369 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 10 [2019-09-08 03:26:29,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 03:26:29,369 INFO L475 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2019-09-08 03:26:29,370 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-08 03:26:29,370 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2019-09-08 03:26:29,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-09-08 03:26:29,371 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 03:26:29,371 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 03:26:29,371 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 03:26:29,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 03:26:29,372 INFO L82 PathProgramCache]: Analyzing trace with hash 427538464, now seen corresponding path program 1 times [2019-09-08 03:26:29,372 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 03:26:29,372 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 03:26:29,373 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 03:26:29,373 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 03:26:29,374 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 03:26:29,380 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-09-08 03:26:29,380 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-09-08 03:26:29,381 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP 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 [2019-09-08 03:26:29,400 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 03:26:29,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 03:26:29,417 INFO L256 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 21 conjunts are in the unsatisfiable core [2019-09-08 03:26:29,419 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 03:26:29,470 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 03:26:29,509 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 03:26:29,514 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-09-08 03:26:29,514 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2019-09-08 03:26:29,515 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-08 03:26:29,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-08 03:26:29,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-09-08 03:26:29,516 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand 6 states. [2019-09-08 03:26:29,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 03:26:29,618 INFO L93 Difference]: Finished difference Result 35 states and 40 transitions. [2019-09-08 03:26:29,618 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-08 03:26:29,619 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2019-09-08 03:26:29,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 03:26:29,620 INFO L225 Difference]: With dead ends: 35 [2019-09-08 03:26:29,620 INFO L226 Difference]: Without dead ends: 32 [2019-09-08 03:26:29,621 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-09-08 03:26:29,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2019-09-08 03:26:29,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2019-09-08 03:26:29,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-09-08 03:26:29,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2019-09-08 03:26:29,631 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 18 [2019-09-08 03:26:29,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 03:26:29,631 INFO L475 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2019-09-08 03:26:29,631 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-08 03:26:29,632 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2019-09-08 03:26:29,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-09-08 03:26:29,633 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 03:26:29,634 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 03:26:29,634 INFO L418 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 03:26:29,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 03:26:29,634 INFO L82 PathProgramCache]: Analyzing trace with hash 484796766, now seen corresponding path program 1 times [2019-09-08 03:26:29,635 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 03:26:29,635 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 03:26:29,637 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 03:26:29,637 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 03:26:29,637 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 03:26:29,649 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-09-08 03:26:29,649 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-09-08 03:26:29,649 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP 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) [2019-09-08 03:26:29,676 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 03:26:29,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-09-08 03:26:29,695 INFO L256 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 21 conjunts are in the unsatisfiable core [2019-09-08 03:26:29,698 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 03:26:29,744 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 03:26:29,766 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 03:26:29,771 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-09-08 03:26:29,771 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2019-09-08 03:26:29,771 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-08 03:26:29,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-08 03:26:29,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-09-08 03:26:29,772 INFO L87 Difference]: Start difference. First operand 31 states and 34 transitions. Second operand 6 states. [2019-09-08 03:26:29,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 03:26:29,867 INFO L93 Difference]: Finished difference Result 42 states and 47 transitions. [2019-09-08 03:26:29,868 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-08 03:26:29,868 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2019-09-08 03:26:29,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 03:26:29,869 INFO L225 Difference]: With dead ends: 42 [2019-09-08 03:26:29,869 INFO L226 Difference]: Without dead ends: 39 [2019-09-08 03:26:29,870 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-09-08 03:26:29,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2019-09-08 03:26:29,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 31. [2019-09-08 03:26:29,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-09-08 03:26:29,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2019-09-08 03:26:29,878 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 18 [2019-09-08 03:26:29,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 03:26:29,879 INFO L475 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2019-09-08 03:26:29,879 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-08 03:26:29,879 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2019-09-08 03:26:29,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2019-09-08 03:26:29,880 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 03:26:29,880 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 03:26:29,880 INFO L418 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 03:26:29,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 03:26:29,881 INFO L82 PathProgramCache]: Analyzing trace with hash 1597862285, now seen corresponding path program 2 times [2019-09-08 03:26:29,881 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 03:26:29,881 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 03:26:29,882 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 03:26:29,882 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 03:26:29,882 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 03:26:29,888 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-09-08 03:26:29,888 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-09-08 03:26:29,888 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP 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 [2019-09-08 03:26:29,903 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-09-08 03:26:29,933 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-09-08 03:26:29,933 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-08 03:26:29,934 INFO L256 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 23 conjunts are in the unsatisfiable core [2019-09-08 03:26:29,936 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 03:26:30,019 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 03:26:30,048 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-09-08 03:26:30,051 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-09-08 03:26:30,051 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2019-09-08 03:26:30,052 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-08 03:26:30,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-08 03:26:30,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-09-08 03:26:30,053 INFO L87 Difference]: Start difference. First operand 31 states and 34 transitions. Second operand 7 states. [2019-09-08 03:26:30,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 03:26:30,184 INFO L93 Difference]: Finished difference Result 50 states and 56 transitions. [2019-09-08 03:26:30,184 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-08 03:26:30,185 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 26 [2019-09-08 03:26:30,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 03:26:30,186 INFO L225 Difference]: With dead ends: 50 [2019-09-08 03:26:30,187 INFO L226 Difference]: Without dead ends: 47 [2019-09-08 03:26:30,187 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-09-08 03:26:30,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2019-09-08 03:26:30,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 39. [2019-09-08 03:26:30,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2019-09-08 03:26:30,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2019-09-08 03:26:30,199 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 26 [2019-09-08 03:26:30,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 03:26:30,200 INFO L475 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2019-09-08 03:26:30,200 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-08 03:26:30,200 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2019-09-08 03:26:30,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2019-09-08 03:26:30,201 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 03:26:30,202 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 03:26:30,202 INFO L418 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 03:26:30,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 03:26:30,202 INFO L82 PathProgramCache]: Analyzing trace with hash 1655120587, now seen corresponding path program 1 times [2019-09-08 03:26:30,202 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 03:26:30,203 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 03:26:30,203 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 03:26:30,204 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-08 03:26:30,207 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 03:26:30,221 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-09-08 03:26:30,221 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-09-08 03:26:30,221 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP 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) [2019-09-08 03:26:30,236 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-09-08 03:26:30,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 03:26:30,257 INFO L256 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 23 conjunts are in the unsatisfiable core [2019-09-08 03:26:30,262 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 03:26:30,324 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 03:26:30,346 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-09-08 03:26:30,349 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-09-08 03:26:30,350 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2019-09-08 03:26:30,350 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-08 03:26:30,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-08 03:26:30,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-09-08 03:26:30,351 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand 7 states. [2019-09-08 03:26:30,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 03:26:30,461 INFO L93 Difference]: Finished difference Result 50 states and 56 transitions. [2019-09-08 03:26:30,462 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-08 03:26:30,462 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 26 [2019-09-08 03:26:30,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 03:26:30,463 INFO L225 Difference]: With dead ends: 50 [2019-09-08 03:26:30,463 INFO L226 Difference]: Without dead ends: 47 [2019-09-08 03:26:30,464 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-09-08 03:26:30,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2019-09-08 03:26:30,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 39. [2019-09-08 03:26:30,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2019-09-08 03:26:30,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2019-09-08 03:26:30,472 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 26 [2019-09-08 03:26:30,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 03:26:30,472 INFO L475 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2019-09-08 03:26:30,472 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-08 03:26:30,472 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2019-09-08 03:26:30,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2019-09-08 03:26:30,473 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 03:26:30,473 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 03:26:30,474 INFO L418 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 03:26:30,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 03:26:30,474 INFO L82 PathProgramCache]: Analyzing trace with hash 586745035, now seen corresponding path program 2 times [2019-09-08 03:26:30,474 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 03:26:30,474 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 03:26:30,475 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 03:26:30,475 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 03:26:30,475 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 03:26:30,479 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-09-08 03:26:30,480 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-09-08 03:26:30,480 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP 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) [2019-09-08 03:26:30,504 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-09-08 03:26:30,523 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-09-08 03:26:30,523 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-08 03:26:30,524 INFO L256 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 23 conjunts are in the unsatisfiable core [2019-09-08 03:26:30,526 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 03:26:30,576 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 03:26:30,602 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Exception during sending of exit command (exit): Broken pipe [2019-09-08 03:26:30,606 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-09-08 03:26:30,606 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2019-09-08 03:26:30,606 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-08 03:26:30,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-08 03:26:30,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-09-08 03:26:30,607 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand 7 states. [2019-09-08 03:26:30,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 03:26:30,727 INFO L93 Difference]: Finished difference Result 58 states and 65 transitions. [2019-09-08 03:26:30,727 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-08 03:26:30,727 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 26 [2019-09-08 03:26:30,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 03:26:30,728 INFO L225 Difference]: With dead ends: 58 [2019-09-08 03:26:30,728 INFO L226 Difference]: Without dead ends: 55 [2019-09-08 03:26:30,729 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-09-08 03:26:30,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2019-09-08 03:26:30,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 47. [2019-09-08 03:26:30,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2019-09-08 03:26:30,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 52 transitions. [2019-09-08 03:26:30,737 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 52 transitions. Word has length 26 [2019-09-08 03:26:30,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 03:26:30,738 INFO L475 AbstractCegarLoop]: Abstraction has 47 states and 52 transitions. [2019-09-08 03:26:30,738 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-08 03:26:30,738 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 52 transitions. [2019-09-08 03:26:30,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2019-09-08 03:26:30,739 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 03:26:30,739 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 03:26:30,739 INFO L418 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 03:26:30,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 03:26:30,740 INFO L82 PathProgramCache]: Analyzing trace with hash 644003337, now seen corresponding path program 2 times [2019-09-08 03:26:30,740 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 03:26:30,740 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 03:26:30,741 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 03:26:30,741 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-08 03:26:30,741 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 03:26:30,746 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-09-08 03:26:30,746 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-09-08 03:26:30,746 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP 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) [2019-09-08 03:26:30,760 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-09-08 03:26:30,776 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-09-08 03:26:30,776 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-08 03:26:30,777 INFO L256 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 23 conjunts are in the unsatisfiable core [2019-09-08 03:26:30,779 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 03:26:30,842 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 03:26:30,868 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-09-08 03:26:30,871 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-09-08 03:26:30,871 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2019-09-08 03:26:30,872 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-08 03:26:30,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-08 03:26:30,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-09-08 03:26:30,873 INFO L87 Difference]: Start difference. First operand 47 states and 52 transitions. Second operand 7 states. [2019-09-08 03:26:30,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 03:26:30,999 INFO L93 Difference]: Finished difference Result 58 states and 65 transitions. [2019-09-08 03:26:31,000 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-08 03:26:31,000 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 26 [2019-09-08 03:26:31,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 03:26:31,010 INFO L225 Difference]: With dead ends: 58 [2019-09-08 03:26:31,011 INFO L226 Difference]: Without dead ends: 55 [2019-09-08 03:26:31,011 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-09-08 03:26:31,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2019-09-08 03:26:31,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 39. [2019-09-08 03:26:31,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2019-09-08 03:26:31,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2019-09-08 03:26:31,022 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 26 [2019-09-08 03:26:31,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 03:26:31,024 INFO L475 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2019-09-08 03:26:31,024 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-08 03:26:31,024 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2019-09-08 03:26:31,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2019-09-08 03:26:31,026 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 03:26:31,026 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 03:26:31,026 INFO L418 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 03:26:31,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 03:26:31,027 INFO L82 PathProgramCache]: Analyzing trace with hash -380015110, now seen corresponding path program 3 times [2019-09-08 03:26:31,027 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 03:26:31,027 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 03:26:31,028 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 03:26:31,029 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-08 03:26:31,029 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 03:26:31,043 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-09-08 03:26:31,043 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-09-08 03:26:31,043 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP 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 [2019-09-08 03:26:31,060 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-09-08 03:26:31,075 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-09-08 03:26:31,075 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-08 03:26:31,076 INFO L256 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 24 conjunts are in the unsatisfiable core [2019-09-08 03:26:31,083 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 03:26:31,136 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 03:26:31,156 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 21 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-09-08 03:26:31,160 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-09-08 03:26:31,160 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2019-09-08 03:26:31,161 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-09-08 03:26:31,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-09-08 03:26:31,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-09-08 03:26:31,161 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand 8 states. [2019-09-08 03:26:31,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 03:26:31,259 INFO L93 Difference]: Finished difference Result 65 states and 72 transitions. [2019-09-08 03:26:31,260 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-08 03:26:31,260 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 34 [2019-09-08 03:26:31,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 03:26:31,261 INFO L225 Difference]: With dead ends: 65 [2019-09-08 03:26:31,262 INFO L226 Difference]: Without dead ends: 62 [2019-09-08 03:26:31,262 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2019-09-08 03:26:31,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2019-09-08 03:26:31,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 55. [2019-09-08 03:26:31,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2019-09-08 03:26:31,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 61 transitions. [2019-09-08 03:26:31,276 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 61 transitions. Word has length 34 [2019-09-08 03:26:31,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 03:26:31,277 INFO L475 AbstractCegarLoop]: Abstraction has 55 states and 61 transitions. [2019-09-08 03:26:31,277 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-09-08 03:26:31,277 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 61 transitions. [2019-09-08 03:26:31,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2019-09-08 03:26:31,278 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 03:26:31,278 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 03:26:31,279 INFO L418 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 03:26:31,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 03:26:31,279 INFO L82 PathProgramCache]: Analyzing trace with hash -322756808, now seen corresponding path program 3 times [2019-09-08 03:26:31,279 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 03:26:31,279 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 03:26:31,280 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 03:26:31,280 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-08 03:26:31,280 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 03:26:31,286 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-09-08 03:26:31,286 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-09-08 03:26:31,286 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP 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) [2019-09-08 03:26:31,302 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-09-08 03:26:31,318 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-09-08 03:26:31,318 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-08 03:26:31,319 INFO L256 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 24 conjunts are in the unsatisfiable core [2019-09-08 03:26:31,322 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 03:26:31,387 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 03:26:31,419 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 15 proven. 7 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-09-08 03:26:31,422 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-09-08 03:26:31,422 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2019-09-08 03:26:31,423 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-08 03:26:31,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-08 03:26:31,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-09-08 03:26:31,423 INFO L87 Difference]: Start difference. First operand 55 states and 61 transitions. Second operand 9 states. [2019-09-08 03:26:31,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 03:26:31,547 INFO L93 Difference]: Finished difference Result 73 states and 81 transitions. [2019-09-08 03:26:31,547 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-08 03:26:31,547 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 34 [2019-09-08 03:26:31,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 03:26:31,549 INFO L225 Difference]: With dead ends: 73 [2019-09-08 03:26:31,549 INFO L226 Difference]: Without dead ends: 70 [2019-09-08 03:26:31,550 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2019-09-08 03:26:31,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2019-09-08 03:26:31,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 47. [2019-09-08 03:26:31,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2019-09-08 03:26:31,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 52 transitions. [2019-09-08 03:26:31,559 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 52 transitions. Word has length 34 [2019-09-08 03:26:31,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 03:26:31,559 INFO L475 AbstractCegarLoop]: Abstraction has 47 states and 52 transitions. [2019-09-08 03:26:31,560 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-08 03:26:31,560 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 52 transitions. [2019-09-08 03:26:31,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2019-09-08 03:26:31,561 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 03:26:31,561 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 03:26:31,561 INFO L418 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 03:26:31,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 03:26:31,561 INFO L82 PathProgramCache]: Analyzing trace with hash -1391132360, now seen corresponding path program 4 times [2019-09-08 03:26:31,561 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 03:26:31,562 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 03:26:31,562 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 03:26:31,563 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-08 03:26:31,563 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 03:26:31,568 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-09-08 03:26:31,568 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-09-08 03:26:31,569 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP 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 [2019-09-08 03:26:31,592 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-09-08 03:26:31,605 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-09-08 03:26:31,605 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-08 03:26:31,606 INFO L256 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core [2019-09-08 03:26:31,613 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 03:26:35,755 WARN L188 SmtUtils]: Spent 2.02 s on a formula simplification that was a NOOP. DAG size: 23 [2019-09-08 03:26:43,888 WARN L188 SmtUtils]: Spent 2.04 s on a formula simplification that was a NOOP. DAG size: 27 [2019-09-08 03:26:54,062 WARN L188 SmtUtils]: Spent 2.02 s on a formula simplification that was a NOOP. DAG size: 33 [2019-09-08 03:26:54,066 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 03:26:54,125 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 14 proven. 8 refuted. 8 times theorem prover too weak. 6 trivial. 0 not checked. [2019-09-08 03:26:54,134 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-09-08 03:26:54,134 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2019-09-08 03:26:54,135 INFO L454 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-09-08 03:26:54,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-09-08 03:26:54,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=76, Unknown=10, NotChecked=0, Total=110 [2019-09-08 03:26:54,136 INFO L87 Difference]: Start difference. First operand 47 states and 52 transitions. Second operand 11 states. [2019-09-08 03:28:07,614 WARN L188 SmtUtils]: Spent 4.02 s on a formula simplification that was a NOOP. DAG size: 38 [2019-09-08 03:28:50,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 03:28:50,833 INFO L93 Difference]: Finished difference Result 86 states and 101 transitions. [2019-09-08 03:28:50,834 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-09-08 03:28:50,834 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 34 [2019-09-08 03:28:50,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 03:28:50,837 INFO L225 Difference]: With dead ends: 86 [2019-09-08 03:28:50,837 INFO L226 Difference]: Without dead ends: 81 [2019-09-08 03:28:50,837 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 52.6s TimeCoverageRelationStatistics Valid=41, Invalid=126, Unknown=15, NotChecked=0, Total=182 [2019-09-08 03:28:50,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2019-09-08 03:28:50,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 69. [2019-09-08 03:28:50,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2019-09-08 03:28:50,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 79 transitions. [2019-09-08 03:28:50,854 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 79 transitions. Word has length 34 [2019-09-08 03:28:50,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 03:28:50,855 INFO L475 AbstractCegarLoop]: Abstraction has 69 states and 79 transitions. [2019-09-08 03:28:50,855 INFO L476 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-09-08 03:28:50,855 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 79 transitions. [2019-09-08 03:28:50,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2019-09-08 03:28:50,857 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 03:28:50,857 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 03:28:50,857 INFO L418 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 03:28:50,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 03:28:50,857 INFO L82 PathProgramCache]: Analyzing trace with hash -1333874058, now seen corresponding path program 5 times [2019-09-08 03:28:50,858 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 03:28:50,858 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 03:28:50,859 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 03:28:50,859 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-08 03:28:50,859 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 03:28:50,863 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-09-08 03:28:50,863 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-09-08 03:28:50,863 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP 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 [2019-09-08 03:28:50,878 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-09-08 03:28:50,907 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2019-09-08 03:28:50,907 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-08 03:28:50,908 INFO L256 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 29 conjunts are in the unsatisfiable core [2019-09-08 03:28:50,910 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 03:28:50,990 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 03:28:51,013 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 6 proven. 18 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-09-08 03:28:51,016 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-09-08 03:28:51,016 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2019-09-08 03:28:51,017 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-09-08 03:28:51,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-09-08 03:28:51,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-09-08 03:28:51,017 INFO L87 Difference]: Start difference. First operand 69 states and 79 transitions. Second operand 8 states. [2019-09-08 03:28:51,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 03:28:51,199 INFO L93 Difference]: Finished difference Result 96 states and 110 transitions. [2019-09-08 03:28:51,199 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-08 03:28:51,199 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 34 [2019-09-08 03:28:51,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 03:28:51,201 INFO L225 Difference]: With dead ends: 96 [2019-09-08 03:28:51,201 INFO L226 Difference]: Without dead ends: 93 [2019-09-08 03:28:51,201 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-09-08 03:28:51,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2019-09-08 03:28:51,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 91. [2019-09-08 03:28:51,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2019-09-08 03:28:51,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 103 transitions. [2019-09-08 03:28:51,220 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 103 transitions. Word has length 34 [2019-09-08 03:28:51,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 03:28:51,220 INFO L475 AbstractCegarLoop]: Abstraction has 91 states and 103 transitions. [2019-09-08 03:28:51,221 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-09-08 03:28:51,221 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 103 transitions. [2019-09-08 03:28:51,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2019-09-08 03:28:51,222 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 03:28:51,222 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 03:28:51,222 INFO L418 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 03:28:51,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 03:28:51,222 INFO L82 PathProgramCache]: Analyzing trace with hash -1172277642, now seen corresponding path program 6 times [2019-09-08 03:28:51,223 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 03:28:51,223 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 03:28:51,223 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 03:28:51,224 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-08 03:28:51,224 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 03:28:51,228 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-09-08 03:28:51,228 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-09-08 03:28:51,228 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP 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 [2019-09-08 03:28:51,256 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-09-08 03:28:51,280 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2019-09-08 03:28:51,280 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-08 03:28:51,282 INFO L256 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 26 conjunts are in the unsatisfiable core [2019-09-08 03:28:51,284 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 03:28:51,358 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 03:28:51,390 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 15 proven. 7 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-09-08 03:28:51,395 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-09-08 03:28:51,395 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2019-09-08 03:28:51,396 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-08 03:28:51,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-08 03:28:51,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-09-08 03:28:51,397 INFO L87 Difference]: Start difference. First operand 91 states and 103 transitions. Second operand 9 states. [2019-09-08 03:28:52,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 03:28:52,335 INFO L93 Difference]: Finished difference Result 107 states and 123 transitions. [2019-09-08 03:28:52,335 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-08 03:28:52,335 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 34 [2019-09-08 03:28:52,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 03:28:52,337 INFO L225 Difference]: With dead ends: 107 [2019-09-08 03:28:52,337 INFO L226 Difference]: Without dead ends: 104 [2019-09-08 03:28:52,338 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2019-09-08 03:28:52,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2019-09-08 03:28:52,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 91. [2019-09-08 03:28:52,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2019-09-08 03:28:52,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 103 transitions. [2019-09-08 03:28:52,355 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 103 transitions. Word has length 34 [2019-09-08 03:28:52,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 03:28:52,356 INFO L475 AbstractCegarLoop]: Abstraction has 91 states and 103 transitions. [2019-09-08 03:28:52,356 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-08 03:28:52,356 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 103 transitions. [2019-09-08 03:28:52,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2019-09-08 03:28:52,357 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 03:28:52,357 INFO L399 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 03:28:52,357 INFO L418 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 03:28:52,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 03:28:52,358 INFO L82 PathProgramCache]: Analyzing trace with hash 1845621219, now seen corresponding path program 7 times [2019-09-08 03:28:52,358 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 03:28:52,358 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 03:28:52,359 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 03:28:52,359 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-08 03:28:52,359 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 03:28:52,363 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-09-08 03:28:52,363 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-09-08 03:28:52,363 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP 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 [2019-09-08 03:28:52,390 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 03:28:52,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 03:28:52,422 INFO L256 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 31 conjunts are in the unsatisfiable core [2019-09-08 03:28:52,424 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 03:28:52,523 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 03:28:52,553 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 8 proven. 32 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-09-08 03:28:52,559 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-09-08 03:28:52,559 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2019-09-08 03:28:52,560 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-08 03:28:52,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-08 03:28:52,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2019-09-08 03:28:52,561 INFO L87 Difference]: Start difference. First operand 91 states and 103 transitions. Second operand 9 states. [2019-09-08 03:28:52,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 03:28:52,758 INFO L93 Difference]: Finished difference Result 118 states and 134 transitions. [2019-09-08 03:28:52,758 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-09-08 03:28:52,758 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 42 [2019-09-08 03:28:52,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 03:28:52,760 INFO L225 Difference]: With dead ends: 118 [2019-09-08 03:28:52,761 INFO L226 Difference]: Without dead ends: 115 [2019-09-08 03:28:52,762 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2019-09-08 03:28:52,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2019-09-08 03:28:52,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 99. [2019-09-08 03:28:52,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2019-09-08 03:28:52,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 112 transitions. [2019-09-08 03:28:52,778 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 112 transitions. Word has length 42 [2019-09-08 03:28:52,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 03:28:52,778 INFO L475 AbstractCegarLoop]: Abstraction has 99 states and 112 transitions. [2019-09-08 03:28:52,778 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-08 03:28:52,778 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 112 transitions. [2019-09-08 03:28:52,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2019-09-08 03:28:52,779 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 03:28:52,780 INFO L399 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 03:28:52,780 INFO L418 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 03:28:52,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 03:28:52,780 INFO L82 PathProgramCache]: Analyzing trace with hash 2007217635, now seen corresponding path program 8 times [2019-09-08 03:28:52,780 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 03:28:52,781 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 03:28:52,781 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 03:28:52,781 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 03:28:52,782 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 03:28:52,785 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-09-08 03:28:52,786 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-09-08 03:28:52,786 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP 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 [2019-09-08 03:28:52,816 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-09-08 03:28:52,849 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-09-08 03:28:52,849 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-08 03:28:52,851 INFO L256 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 31 conjunts are in the unsatisfiable core [2019-09-08 03:28:52,853 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 03:28:52,967 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 03:28:53,001 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 8 proven. 32 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-09-08 03:28:53,005 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-09-08 03:28:53,005 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2019-09-08 03:28:53,007 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-08 03:28:53,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-08 03:28:53,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2019-09-08 03:28:53,008 INFO L87 Difference]: Start difference. First operand 99 states and 112 transitions. Second operand 9 states. [2019-09-08 03:28:53,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 03:28:53,195 INFO L93 Difference]: Finished difference Result 125 states and 141 transitions. [2019-09-08 03:28:53,195 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-09-08 03:28:53,195 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 42 [2019-09-08 03:28:53,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 03:28:53,197 INFO L225 Difference]: With dead ends: 125 [2019-09-08 03:28:53,197 INFO L226 Difference]: Without dead ends: 123 [2019-09-08 03:28:53,202 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2019-09-08 03:28:53,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2019-09-08 03:28:53,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 121. [2019-09-08 03:28:53,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2019-09-08 03:28:53,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 136 transitions. [2019-09-08 03:28:53,226 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 136 transitions. Word has length 42 [2019-09-08 03:28:53,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 03:28:53,227 INFO L475 AbstractCegarLoop]: Abstraction has 121 states and 136 transitions. [2019-09-08 03:28:53,227 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-08 03:28:53,227 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 136 transitions. [2019-09-08 03:28:53,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2019-09-08 03:28:53,228 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 03:28:53,228 INFO L399 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 03:28:53,228 INFO L418 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 03:28:53,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 03:28:53,229 INFO L82 PathProgramCache]: Analyzing trace with hash 2064475937, now seen corresponding path program 9 times [2019-09-08 03:28:53,229 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 03:28:53,229 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 03:28:53,230 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 03:28:53,231 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-08 03:28:53,231 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 03:28:53,241 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-09-08 03:28:53,241 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-09-08 03:28:53,241 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-09-08 03:28:53,267 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-09-08 03:28:53,279 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-09-08 03:28:53,279 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-08 03:28:53,280 INFO L256 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 20 conjunts are in the unsatisfiable core [2019-09-08 03:28:53,282 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 03:28:53,315 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 03:28:53,333 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 30 proven. 1 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-09-08 03:28:53,338 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-09-08 03:28:53,338 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2019-09-08 03:28:53,339 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-09-08 03:28:53,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-09-08 03:28:53,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-09-08 03:28:53,340 INFO L87 Difference]: Start difference. First operand 121 states and 136 transitions. Second operand 8 states. [2019-09-08 03:28:53,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 03:28:53,389 INFO L93 Difference]: Finished difference Result 121 states and 136 transitions. [2019-09-08 03:28:53,390 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-08 03:28:53,390 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 42 [2019-09-08 03:28:53,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 03:28:53,390 INFO L225 Difference]: With dead ends: 121 [2019-09-08 03:28:53,390 INFO L226 Difference]: Without dead ends: 0 [2019-09-08 03:28:53,393 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2019-09-08 03:28:53,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-08 03:28:53,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-08 03:28:53,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-08 03:28:53,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-08 03:28:53,394 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 42 [2019-09-08 03:28:53,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 03:28:53,394 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-08 03:28:53,394 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-09-08 03:28:53,395 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-08 03:28:53,395 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-08 03:28:53,400 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-09-08 03:28:53,522 WARN L188 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 177 DAG size of output: 16 [2019-09-08 03:30:35,230 WARN L188 SmtUtils]: Spent 1.69 m on a formula simplification. DAG size of input: 117 DAG size of output: 42 [2019-09-08 03:30:35,242 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2019-09-08 03:30:35,243 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-09-08 03:30:35,243 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-09-08 03:30:35,243 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-09-08 03:30:35,243 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-09-08 03:30:35,243 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-09-08 03:30:35,243 INFO L439 ceAbstractionStarter]: At program point L27(line 27) the Hoare annotation is: (and (<= 1 main_~a~0) (= (+ (* main_~x~0 main_~u~0) (* main_~y~0 main_~v~0)) (* main_~b~0 (* 2 main_~a~0)))) [2019-09-08 03:30:35,243 INFO L443 ceAbstractionStarter]: For program point L27-1(lines 26 39) no Hoare annotation was computed. [2019-09-08 03:30:35,243 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 13 46) no Hoare annotation was computed. [2019-09-08 03:30:35,243 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 13 46) no Hoare annotation was computed. [2019-09-08 03:30:35,243 INFO L443 ceAbstractionStarter]: For program point L32(lines 32 38) no Hoare annotation was computed. [2019-09-08 03:30:35,244 INFO L439 ceAbstractionStarter]: At program point L32-2(lines 26 39) the Hoare annotation is: (and (<= 1 main_~a~0) (= (+ (* main_~x~0 main_~u~0) (* main_~y~0 main_~v~0)) (* main_~b~0 (* 2 main_~a~0)))) [2019-09-08 03:30:35,244 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 13 46) the Hoare annotation is: true [2019-09-08 03:30:35,244 INFO L439 ceAbstractionStarter]: At program point L26-2(lines 26 39) the Hoare annotation is: (let ((.cse0 (* main_~b~0 (* 2 main_~a~0)))) (let ((.cse1 (= (+ (* main_~x~0 main_~u~0) (* main_~y~0 main_~v~0)) .cse0))) (or (and (= (+ (* main_~x~0 (+ (* (- 1) main_~v~0) main_~u~0)) (* main_~v~0 (+ main_~x~0 main_~y~0))) .cse0) (exists ((v_prenex_1 Int)) (= (* main_~b~0 (* 2 main_~a~0)) (+ (* v_prenex_1 (+ (* (- 1) main_~v~0) main_~u~0)) (* (+ (* 2 main_~v~0) (* (- 1) main_~u~0)) (+ main_~x~0 main_~y~0)))))) (and (exists ((v_prenex_1 Int)) (= (+ (* main_~u~0 v_prenex_1) (* main_~y~0 (+ main_~v~0 (* (- 1) main_~u~0)))) (* main_~b~0 (* 2 main_~a~0)))) .cse1) (and (<= 1 main_~a~0) .cse1)))) [2019-09-08 03:30:35,244 INFO L443 ceAbstractionStarter]: For program point L41(line 41) no Hoare annotation was computed. [2019-09-08 03:30:35,244 INFO L446 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 5 11) the Hoare annotation is: true [2019-09-08 03:30:35,244 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 5 11) no Hoare annotation was computed. [2019-09-08 03:30:35,244 INFO L443 ceAbstractionStarter]: For program point L7(lines 7 8) no Hoare annotation was computed. [2019-09-08 03:30:35,244 INFO L443 ceAbstractionStarter]: For program point L6(lines 6 9) no Hoare annotation was computed. [2019-09-08 03:30:35,244 INFO L443 ceAbstractionStarter]: For program point L6-2(lines 5 11) no Hoare annotation was computed. [2019-09-08 03:30:35,245 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2019-09-08 03:30:35,256 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.09 03:30:35 BoogieIcfgContainer [2019-09-08 03:30:35,256 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-08 03:30:35,258 INFO L168 Benchmark]: Toolchain (without parser) took 247148.43 ms. Allocated memory was 132.6 MB in the beginning and 302.0 MB in the end (delta: 169.3 MB). Free memory was 88.2 MB in the beginning and 127.3 MB in the end (delta: -39.1 MB). Peak memory consumption was 130.3 MB. Max. memory is 7.1 GB. [2019-09-08 03:30:35,259 INFO L168 Benchmark]: CDTParser took 0.36 ms. Allocated memory is still 132.6 MB. Free memory was 107.0 MB in the beginning and 106.8 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-08 03:30:35,260 INFO L168 Benchmark]: CACSL2BoogieTranslator took 211.79 ms. Allocated memory is still 132.6 MB. Free memory was 88.0 MB in the beginning and 78.5 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. [2019-09-08 03:30:35,261 INFO L168 Benchmark]: Boogie Preprocessor took 117.30 ms. Allocated memory was 132.6 MB in the beginning and 200.3 MB in the end (delta: 67.6 MB). Free memory was 78.5 MB in the beginning and 176.4 MB in the end (delta: -97.9 MB). Peak memory consumption was 16.0 MB. Max. memory is 7.1 GB. [2019-09-08 03:30:35,261 INFO L168 Benchmark]: RCFGBuilder took 235.94 ms. Allocated memory is still 200.3 MB. Free memory was 176.4 MB in the beginning and 164.8 MB in the end (delta: 11.6 MB). Peak memory consumption was 11.6 MB. Max. memory is 7.1 GB. [2019-09-08 03:30:35,262 INFO L168 Benchmark]: TraceAbstraction took 246571.02 ms. Allocated memory was 200.3 MB in the beginning and 302.0 MB in the end (delta: 101.7 MB). Free memory was 164.8 MB in the beginning and 127.3 MB in the end (delta: 37.6 MB). Peak memory consumption was 139.3 MB. Max. memory is 7.1 GB. [2019-09-08 03:30:35,266 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36 ms. Allocated memory is still 132.6 MB. Free memory was 107.0 MB in the beginning and 106.8 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 211.79 ms. Allocated memory is still 132.6 MB. Free memory was 88.0 MB in the beginning and 78.5 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 117.30 ms. Allocated memory was 132.6 MB in the beginning and 200.3 MB in the end (delta: 67.6 MB). Free memory was 78.5 MB in the beginning and 176.4 MB in the end (delta: -97.9 MB). Peak memory consumption was 16.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 235.94 ms. Allocated memory is still 200.3 MB. Free memory was 176.4 MB in the beginning and 164.8 MB in the end (delta: 11.6 MB). Peak memory consumption was 11.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 246571.02 ms. Allocated memory was 200.3 MB in the beginning and 302.0 MB in the end (delta: 101.7 MB). Free memory was 164.8 MB in the beginning and 127.3 MB in the end (delta: 37.6 MB). Peak memory consumption was 139.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 8]: 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 - InvariantResult [Line: 26]: Loop Invariant Derived loop invariant: 1 <= a && x * u + y * v == b * (2 * a) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 21 locations, 1 error locations. SAFE Result, 246.4s OverallTime, 16 OverallIterations, 5 TraceHistogramMax, 119.3s AutomataDifference, 0.0s DeadEndRemovalTime, 101.8s HoareAnnotationTime, HoareTripleCheckerStatistics: 251 SDtfs, 142 SDslu, 1018 SDs, 0 SdLazy, 1343 SolverSat, 61 SolverUnsat, 48 SolverUnknown, 0 SolverNotchecked, 88.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 455 GetRequests, 345 SyntacticMatches, 4 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 53.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=121occurred in iteration=15, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 16 MinimizatonAttempts, 125 StatesRemovedByMinimization, 14 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 42 PreInvPairs, 92 NumberOfFragments, 135 HoareAnnotationTreeSize, 42 FomulaSimplifications, 13269 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 8 FomulaSimplificationsInter, 398 FormulaSimplificationTreeSizeReductionInter, 101.6s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 23.9s InterpolantComputationTime, 456 NumberOfCodeBlocks, 391 NumberOfCodeBlocksAsserted, 28 NumberOfCheckSat, 440 ConstructedInterpolants, 12 QuantifiedInterpolants, 119066 SizeOfPredicates, 38 NumberOfNonLiveVariables, 1016 ConjunctsInSsa, 360 ConjunctsInUnsatCore, 16 InterpolantComputations, 2 PerfectInterpolantSequences, 294/444 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...