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/eca-rers2012/Problem13_label08.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-07 19:21:38,786 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-07 19:21:38,788 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-07 19:21:38,801 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-09-07 19:21:38,860 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-07 19:21:38,861 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-07 19:21:38,861 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-07 19:21:38,863 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 [2019-09-07 19:21:38,888 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-07 19:21:38,888 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-07 19:21:38,891 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-07 19:21:38,891 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-07 19:21:38,891 INFO L138 SettingsManager]: * Use SBE=true [2019-09-07 19:21:38,891 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-07 19:21:38,892 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-07 19:21:38,892 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-07 19:21:38,892 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-07 19:21:38,892 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-07 19:21:38,893 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-07 19:21:38,893 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-07 19:21:38,894 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-07 19:21:38,894 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-07 19:21:38,894 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-07 19:21:38,894 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-07 19:21:38,895 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-07 19:21:38,895 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-07 19:21:38,895 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-07 19:21:38,895 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-07 19:21:38,896 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-07 19:21:38,896 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-07 19:21:38,896 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-07 19:21:38,896 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-07 19:21:38,897 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-07 19:21:38,897 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-07 19:21:38,897 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-07 19:21:38,897 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-07 19:21:38,897 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-07 19:21:38,927 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-07 19:21:38,938 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-07 19:21:38,944 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-07 19:21:38,945 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-07 19:21:38,946 INFO L275 PluginConnector]: CDTParser initialized [2019-09-07 19:21:38,948 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label08.c [2019-09-07 19:21:39,008 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ddb8d7b9/e727661c27cd43039d8e12261a2d218a/FLAGb941e2141 [2019-09-07 19:21:39,833 INFO L306 CDTParser]: Found 1 translation units. [2019-09-07 19:21:39,834 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label08.c [2019-09-07 19:21:39,885 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ddb8d7b9/e727661c27cd43039d8e12261a2d218a/FLAGb941e2141 [2019-09-07 19:21:40,324 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ddb8d7b9/e727661c27cd43039d8e12261a2d218a [2019-09-07 19:21:40,337 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-07 19:21:40,338 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-07 19:21:40,339 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-07 19:21:40,339 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-07 19:21:40,343 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-07 19:21:40,344 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.09 07:21:40" (1/1) ... [2019-09-07 19:21:40,347 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2037d435 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 07:21:40, skipping insertion in model container [2019-09-07 19:21:40,347 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.09 07:21:40" (1/1) ... [2019-09-07 19:21:40,354 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-07 19:21:40,523 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-07 19:21:42,146 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-07 19:21:42,160 INFO L188 MainTranslator]: Completed pre-run [2019-09-07 19:21:43,001 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-07 19:21:43,033 INFO L192 MainTranslator]: Completed translation [2019-09-07 19:21:43,034 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 07:21:43 WrapperNode [2019-09-07 19:21:43,035 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-07 19:21:43,036 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-07 19:21:43,036 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-07 19:21:43,036 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-07 19:21:43,050 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 07:21:43" (1/1) ... [2019-09-07 19:21:43,050 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 07:21:43" (1/1) ... [2019-09-07 19:21:43,118 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 07:21:43" (1/1) ... [2019-09-07 19:21:43,120 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 07:21:43" (1/1) ... [2019-09-07 19:21:43,233 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 07:21:43" (1/1) ... [2019-09-07 19:21:43,268 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 07:21:43" (1/1) ... [2019-09-07 19:21:43,297 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 07:21:43" (1/1) ... [2019-09-07 19:21:43,343 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-07 19:21:43,343 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-07 19:21:43,343 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-07 19:21:43,344 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-07 19:21:43,345 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 07:21:43" (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 [2019-09-07 19:21:43,404 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-07 19:21:43,404 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-07 19:21:43,404 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-09-07 19:21:43,404 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-09-07 19:21:43,405 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2019-09-07 19:21:43,405 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2019-09-07 19:21:43,405 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-07 19:21:43,405 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-09-07 19:21:43,405 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-09-07 19:21:43,405 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2019-09-07 19:21:43,406 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2019-09-07 19:21:43,406 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-07 19:21:43,406 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-07 19:21:43,406 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-09-07 19:21:43,406 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-07 19:21:43,407 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-07 19:21:43,407 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-07 19:21:49,823 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-07 19:21:49,823 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-07 19:21:49,830 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.09 07:21:49 BoogieIcfgContainer [2019-09-07 19:21:49,830 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-07 19:21:49,831 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-07 19:21:49,831 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-07 19:21:49,836 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-07 19:21:49,836 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.09 07:21:40" (1/3) ... [2019-09-07 19:21:49,837 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@469c7cd4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.09 07:21:49, skipping insertion in model container [2019-09-07 19:21:49,837 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 07:21:43" (2/3) ... [2019-09-07 19:21:49,839 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@469c7cd4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.09 07:21:49, skipping insertion in model container [2019-09-07 19:21:49,840 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.09 07:21:49" (3/3) ... [2019-09-07 19:21:49,846 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem13_label08.c [2019-09-07 19:21:49,858 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-07 19:21:49,867 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-07 19:21:49,885 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-07 19:21:49,934 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-07 19:21:49,935 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-07 19:21:49,935 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-07 19:21:49,935 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-07 19:21:49,935 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-07 19:21:49,935 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-07 19:21:49,935 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-07 19:21:49,935 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-07 19:21:49,935 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-07 19:21:49,974 INFO L276 IsEmpty]: Start isEmpty. Operand 1119 states. [2019-09-07 19:21:49,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2019-09-07 19:21:49,983 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:21:49,984 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 19:21:49,986 INFO L418 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:21:49,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:21:49,993 INFO L82 PathProgramCache]: Analyzing trace with hash 1724184079, now seen corresponding path program 1 times [2019-09-07 19:21:49,995 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:21:49,995 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:21:50,044 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:21:50,045 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:21:50,045 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:21:50,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:21:50,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 19:21:50,319 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 19:21:50,319 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-07 19:21:50,324 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-07 19:21:50,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-07 19:21:50,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-07 19:21:50,340 INFO L87 Difference]: Start difference. First operand 1119 states. Second operand 3 states. [2019-09-07 19:21:55,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:21:55,801 INFO L93 Difference]: Finished difference Result 3094 states and 5704 transitions. [2019-09-07 19:21:55,803 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-07 19:21:55,804 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 56 [2019-09-07 19:21:55,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:21:55,841 INFO L225 Difference]: With dead ends: 3094 [2019-09-07 19:21:55,841 INFO L226 Difference]: Without dead ends: 1913 [2019-09-07 19:21:55,855 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-07 19:21:55,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1913 states. [2019-09-07 19:21:55,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1913 to 1912. [2019-09-07 19:21:55,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1912 states. [2019-09-07 19:21:55,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1912 states to 1912 states and 3141 transitions. [2019-09-07 19:21:55,998 INFO L78 Accepts]: Start accepts. Automaton has 1912 states and 3141 transitions. Word has length 56 [2019-09-07 19:21:55,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:21:55,999 INFO L475 AbstractCegarLoop]: Abstraction has 1912 states and 3141 transitions. [2019-09-07 19:21:55,999 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-07 19:21:55,999 INFO L276 IsEmpty]: Start isEmpty. Operand 1912 states and 3141 transitions. [2019-09-07 19:21:56,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2019-09-07 19:21:56,005 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:21:56,006 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 19:21:56,006 INFO L418 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:21:56,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:21:56,007 INFO L82 PathProgramCache]: Analyzing trace with hash 1158943563, now seen corresponding path program 1 times [2019-09-07 19:21:56,007 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:21:56,007 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:21:56,008 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:21:56,008 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:21:56,009 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:21:56,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:21:56,154 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 19:21:56,154 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 19:21:56,155 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-07 19:21:56,156 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-07 19:21:56,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-07 19:21:56,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-07 19:21:56,157 INFO L87 Difference]: Start difference. First operand 1912 states and 3141 transitions. Second operand 5 states. [2019-09-07 19:22:05,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:22:05,522 INFO L93 Difference]: Finished difference Result 5587 states and 9298 transitions. [2019-09-07 19:22:05,522 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-07 19:22:05,523 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 131 [2019-09-07 19:22:05,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:22:05,548 INFO L225 Difference]: With dead ends: 5587 [2019-09-07 19:22:05,548 INFO L226 Difference]: Without dead ends: 3681 [2019-09-07 19:22:05,553 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-09-07 19:22:05,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3681 states. [2019-09-07 19:22:05,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3681 to 3601. [2019-09-07 19:22:05,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3601 states. [2019-09-07 19:22:05,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3601 states to 3601 states and 5413 transitions. [2019-09-07 19:22:05,685 INFO L78 Accepts]: Start accepts. Automaton has 3601 states and 5413 transitions. Word has length 131 [2019-09-07 19:22:05,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:22:05,689 INFO L475 AbstractCegarLoop]: Abstraction has 3601 states and 5413 transitions. [2019-09-07 19:22:05,689 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-07 19:22:05,689 INFO L276 IsEmpty]: Start isEmpty. Operand 3601 states and 5413 transitions. [2019-09-07 19:22:05,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2019-09-07 19:22:05,701 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:22:05,701 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 19:22:05,702 INFO L418 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:22:05,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:22:05,704 INFO L82 PathProgramCache]: Analyzing trace with hash 1065765487, now seen corresponding path program 1 times [2019-09-07 19:22:05,704 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:22:05,704 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:22:05,705 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:22:05,706 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:22:05,707 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:22:05,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:22:05,936 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 19:22:05,936 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 19:22:05,936 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-07 19:22:05,937 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-07 19:22:05,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-07 19:22:05,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-07 19:22:05,938 INFO L87 Difference]: Start difference. First operand 3601 states and 5413 transitions. Second operand 5 states. [2019-09-07 19:22:17,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:22:17,642 INFO L93 Difference]: Finished difference Result 10903 states and 16895 transitions. [2019-09-07 19:22:17,642 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-07 19:22:17,643 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 145 [2019-09-07 19:22:17,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:22:17,683 INFO L225 Difference]: With dead ends: 10903 [2019-09-07 19:22:17,686 INFO L226 Difference]: Without dead ends: 7308 [2019-09-07 19:22:17,696 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-09-07 19:22:17,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7308 states. [2019-09-07 19:22:17,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7308 to 7121. [2019-09-07 19:22:17,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7121 states. [2019-09-07 19:22:17,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7121 states to 7121 states and 10497 transitions. [2019-09-07 19:22:17,912 INFO L78 Accepts]: Start accepts. Automaton has 7121 states and 10497 transitions. Word has length 145 [2019-09-07 19:22:17,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:22:17,914 INFO L475 AbstractCegarLoop]: Abstraction has 7121 states and 10497 transitions. [2019-09-07 19:22:17,914 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-07 19:22:17,915 INFO L276 IsEmpty]: Start isEmpty. Operand 7121 states and 10497 transitions. [2019-09-07 19:22:17,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2019-09-07 19:22:17,917 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:22:17,918 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 19:22:17,918 INFO L418 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:22:17,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:22:17,919 INFO L82 PathProgramCache]: Analyzing trace with hash -1092495861, now seen corresponding path program 1 times [2019-09-07 19:22:17,919 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:22:17,919 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:22:17,920 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:22:17,921 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:22:17,921 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:22:17,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:22:18,175 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 19:22:18,175 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 19:22:18,175 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-07 19:22:18,176 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-07 19:22:18,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-07 19:22:18,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-09-07 19:22:18,177 INFO L87 Difference]: Start difference. First operand 7121 states and 10497 transitions. Second operand 6 states. [2019-09-07 19:22:27,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:22:27,566 INFO L93 Difference]: Finished difference Result 21450 states and 33775 transitions. [2019-09-07 19:22:27,567 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-07 19:22:27,567 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 163 [2019-09-07 19:22:27,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:22:27,659 INFO L225 Difference]: With dead ends: 21450 [2019-09-07 19:22:27,659 INFO L226 Difference]: Without dead ends: 14335 [2019-09-07 19:22:27,683 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-09-07 19:22:27,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14335 states. [2019-09-07 19:22:28,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14335 to 14126. [2019-09-07 19:22:28,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14126 states. [2019-09-07 19:22:28,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14126 states to 14126 states and 21301 transitions. [2019-09-07 19:22:28,110 INFO L78 Accepts]: Start accepts. Automaton has 14126 states and 21301 transitions. Word has length 163 [2019-09-07 19:22:28,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:22:28,112 INFO L475 AbstractCegarLoop]: Abstraction has 14126 states and 21301 transitions. [2019-09-07 19:22:28,112 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-07 19:22:28,112 INFO L276 IsEmpty]: Start isEmpty. Operand 14126 states and 21301 transitions. [2019-09-07 19:22:28,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2019-09-07 19:22:28,117 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:22:28,118 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 19:22:28,118 INFO L418 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:22:28,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:22:28,119 INFO L82 PathProgramCache]: Analyzing trace with hash 217514268, now seen corresponding path program 1 times [2019-09-07 19:22:28,119 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:22:28,119 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:22:28,120 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:22:28,120 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:22:28,120 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:22:28,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:22:28,295 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 98 proven. 70 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-09-07 19:22:28,295 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 19:22:28,295 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 -t:12000 (exit command is (exit), workingDir is null) [2019-09-07 19:22:28,324 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 19:22:28,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:22:28,413 INFO L256 TraceCheckSpWp]: Trace formula consists of 452 conjuncts, 6 conjunts are in the unsatisfiable core [2019-09-07 19:22:28,437 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 19:22:28,591 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 122 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2019-09-07 19:22:28,604 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-07 19:22:28,605 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2019-09-07 19:22:28,608 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 19:22:28,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 19:22:28,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2019-09-07 19:22:28,609 INFO L87 Difference]: Start difference. First operand 14126 states and 21301 transitions. Second operand 9 states. [2019-09-07 19:22:45,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:22:45,996 INFO L93 Difference]: Finished difference Result 63355 states and 114301 transitions. [2019-09-07 19:22:45,997 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2019-09-07 19:22:45,997 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 234 [2019-09-07 19:22:45,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:22:46,350 INFO L225 Difference]: With dead ends: 63355 [2019-09-07 19:22:46,350 INFO L226 Difference]: Without dead ends: 49235 [2019-09-07 19:22:46,426 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 257 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 304 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=253, Invalid=937, Unknown=0, NotChecked=0, Total=1190 [2019-09-07 19:22:46,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49235 states. [2019-09-07 19:22:47,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49235 to 48112. [2019-09-07 19:22:47,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48112 states. [2019-09-07 19:22:49,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48112 states to 48112 states and 73550 transitions. [2019-09-07 19:22:49,886 INFO L78 Accepts]: Start accepts. Automaton has 48112 states and 73550 transitions. Word has length 234 [2019-09-07 19:22:49,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:22:49,887 INFO L475 AbstractCegarLoop]: Abstraction has 48112 states and 73550 transitions. [2019-09-07 19:22:49,887 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 19:22:49,887 INFO L276 IsEmpty]: Start isEmpty. Operand 48112 states and 73550 transitions. [2019-09-07 19:22:49,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2019-09-07 19:22:49,896 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:22:49,896 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 19:22:49,896 INFO L418 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:22:49,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:22:49,897 INFO L82 PathProgramCache]: Analyzing trace with hash -991360927, now seen corresponding path program 1 times [2019-09-07 19:22:49,897 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:22:49,897 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:22:49,898 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:22:49,898 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:22:49,898 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:22:49,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:22:50,135 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 198 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 19:22:50,136 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 19:22:50,136 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 -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 19:22:50,160 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:22:50,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:22:50,245 INFO L256 TraceCheckSpWp]: Trace formula consists of 497 conjuncts, 3 conjunts are in the unsatisfiable core [2019-09-07 19:22:50,261 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 19:22:50,330 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 148 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2019-09-07 19:22:50,342 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-07 19:22:50,342 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2019-09-07 19:22:50,343 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-07 19:22:50,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-07 19:22:50,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2019-09-07 19:22:50,344 INFO L87 Difference]: Start difference. First operand 48112 states and 73550 transitions. Second operand 7 states. [2019-09-07 19:23:13,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:23:13,231 INFO L93 Difference]: Finished difference Result 163705 states and 295628 transitions. [2019-09-07 19:23:13,232 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-09-07 19:23:13,232 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 278 [2019-09-07 19:23:13,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:23:13,885 INFO L225 Difference]: With dead ends: 163705 [2019-09-07 19:23:13,885 INFO L226 Difference]: Without dead ends: 115599 [2019-09-07 19:23:14,023 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 303 GetRequests, 288 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2019-09-07 19:23:14,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115599 states. [2019-09-07 19:23:18,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115599 to 113015. [2019-09-07 19:23:18,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113015 states. [2019-09-07 19:23:19,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113015 states to 113015 states and 179821 transitions. [2019-09-07 19:23:19,751 INFO L78 Accepts]: Start accepts. Automaton has 113015 states and 179821 transitions. Word has length 278 [2019-09-07 19:23:19,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:23:19,751 INFO L475 AbstractCegarLoop]: Abstraction has 113015 states and 179821 transitions. [2019-09-07 19:23:19,751 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-07 19:23:19,751 INFO L276 IsEmpty]: Start isEmpty. Operand 113015 states and 179821 transitions. [2019-09-07 19:23:19,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2019-09-07 19:23:19,767 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:23:19,767 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 19:23:19,768 INFO L418 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:23:19,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:23:19,768 INFO L82 PathProgramCache]: Analyzing trace with hash -1421873199, now seen corresponding path program 1 times [2019-09-07 19:23:19,768 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:23:19,768 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:23:19,769 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:23:19,769 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:23:19,769 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:23:19,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:23:20,158 INFO L134 CoverageAnalysis]: Checked inductivity of 394 backedges. 313 proven. 71 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-09-07 19:23:20,158 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 19:23:20,158 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 -t:12000 (exit command is (exit), workingDir is null) [2019-09-07 19:23:20,172 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 19:23:20,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:23:20,270 INFO L256 TraceCheckSpWp]: Trace formula consists of 593 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 19:23:20,276 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 19:23:20,384 INFO L134 CoverageAnalysis]: Checked inductivity of 394 backedges. 318 proven. 2 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2019-09-07 19:23:20,390 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 19:23:20,390 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2019-09-07 19:23:20,391 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 19:23:20,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 19:23:20,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-09-07 19:23:20,393 INFO L87 Difference]: Start difference. First operand 113015 states and 179821 transitions. Second operand 9 states. [2019-09-07 19:23:43,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:23:43,684 INFO L93 Difference]: Finished difference Result 274354 states and 499286 transitions. [2019-09-07 19:23:43,685 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-09-07 19:23:43,685 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 328 [2019-09-07 19:23:43,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:23:44,442 INFO L225 Difference]: With dead ends: 274354 [2019-09-07 19:23:44,442 INFO L226 Difference]: Without dead ends: 162148 [2019-09-07 19:23:44,654 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 353 GetRequests, 337 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2019-09-07 19:23:44,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162148 states. [2019-09-07 19:23:48,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162148 to 160246. [2019-09-07 19:23:48,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160246 states. [2019-09-07 19:23:53,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160246 states to 160246 states and 258164 transitions. [2019-09-07 19:23:53,793 INFO L78 Accepts]: Start accepts. Automaton has 160246 states and 258164 transitions. Word has length 328 [2019-09-07 19:23:53,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:23:53,793 INFO L475 AbstractCegarLoop]: Abstraction has 160246 states and 258164 transitions. [2019-09-07 19:23:53,794 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 19:23:53,794 INFO L276 IsEmpty]: Start isEmpty. Operand 160246 states and 258164 transitions. [2019-09-07 19:23:53,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2019-09-07 19:23:53,808 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:23:53,809 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 19:23:53,809 INFO L418 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:23:53,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:23:53,809 INFO L82 PathProgramCache]: Analyzing trace with hash -895399142, now seen corresponding path program 1 times [2019-09-07 19:23:53,809 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:23:53,810 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:23:53,810 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:23:53,811 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:23:53,811 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:23:53,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:23:54,066 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 198 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 19:23:54,066 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 19:23:54,066 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 -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 19:23:54,082 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:23:54,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:23:54,190 INFO L256 TraceCheckSpWp]: Trace formula consists of 547 conjuncts, 5 conjunts are in the unsatisfiable core [2019-09-07 19:23:54,194 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 19:23:54,201 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 19:23:54,202 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 19:23:54,498 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 101 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2019-09-07 19:23:54,508 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-07 19:23:54,509 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2019-09-07 19:23:54,510 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-07 19:23:54,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-07 19:23:54,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-09-07 19:23:54,511 INFO L87 Difference]: Start difference. First operand 160246 states and 258164 transitions. Second operand 6 states. [2019-09-07 19:24:17,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:24:17,568 INFO L93 Difference]: Finished difference Result 419564 states and 708584 transitions. [2019-09-07 19:24:17,569 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-09-07 19:24:17,569 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 328 [2019-09-07 19:24:17,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:24:18,865 INFO L225 Difference]: With dead ends: 419564 [2019-09-07 19:24:18,866 INFO L226 Difference]: Without dead ends: 260127 [2019-09-07 19:24:19,276 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 350 GetRequests, 337 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2019-09-07 19:24:19,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260127 states. [2019-09-07 19:24:25,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260127 to 255158. [2019-09-07 19:24:25,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 255158 states. [2019-09-07 19:24:34,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255158 states to 255158 states and 396271 transitions. [2019-09-07 19:24:34,859 INFO L78 Accepts]: Start accepts. Automaton has 255158 states and 396271 transitions. Word has length 328 [2019-09-07 19:24:34,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:24:34,860 INFO L475 AbstractCegarLoop]: Abstraction has 255158 states and 396271 transitions. [2019-09-07 19:24:34,860 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-07 19:24:34,860 INFO L276 IsEmpty]: Start isEmpty. Operand 255158 states and 396271 transitions. [2019-09-07 19:24:34,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 399 [2019-09-07 19:24:34,906 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:24:34,907 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 19:24:34,907 INFO L418 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:24:34,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:24:34,907 INFO L82 PathProgramCache]: Analyzing trace with hash 2031928932, now seen corresponding path program 1 times [2019-09-07 19:24:34,908 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:24:34,908 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:24:34,909 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:24:34,909 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:24:34,909 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:24:34,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:24:35,331 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 99 proven. 23 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2019-09-07 19:24:35,331 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 19:24:35,331 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 -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 19:24:35,341 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:24:35,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:24:35,455 INFO L256 TraceCheckSpWp]: Trace formula consists of 617 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 19:24:35,461 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 19:24:35,618 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 225 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 19:24:35,630 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 19:24:35,631 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2019-09-07 19:24:35,632 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 19:24:35,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 19:24:35,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-09-07 19:24:35,633 INFO L87 Difference]: Start difference. First operand 255158 states and 396271 transitions. Second operand 9 states. [2019-09-07 19:24:53,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:24:53,712 INFO L93 Difference]: Finished difference Result 507165 states and 809852 transitions. [2019-09-07 19:24:53,713 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-09-07 19:24:53,713 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 398 [2019-09-07 19:24:53,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:24:54,690 INFO L225 Difference]: With dead ends: 507165 [2019-09-07 19:24:54,691 INFO L226 Difference]: Without dead ends: 262727 [2019-09-07 19:24:55,051 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 414 GetRequests, 399 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2019-09-07 19:24:55,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262727 states. [2019-09-07 19:25:00,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262727 to 236264. [2019-09-07 19:25:00,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 236264 states. [2019-09-07 19:25:09,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236264 states to 236264 states and 348830 transitions. [2019-09-07 19:25:09,093 INFO L78 Accepts]: Start accepts. Automaton has 236264 states and 348830 transitions. Word has length 398 [2019-09-07 19:25:09,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:25:09,094 INFO L475 AbstractCegarLoop]: Abstraction has 236264 states and 348830 transitions. [2019-09-07 19:25:09,094 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 19:25:09,094 INFO L276 IsEmpty]: Start isEmpty. Operand 236264 states and 348830 transitions. [2019-09-07 19:25:09,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 421 [2019-09-07 19:25:09,124 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:25:09,125 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 19:25:09,125 INFO L418 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:25:09,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:25:09,125 INFO L82 PathProgramCache]: Analyzing trace with hash 1068518552, now seen corresponding path program 1 times [2019-09-07 19:25:09,126 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:25:09,126 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:25:09,127 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:25:09,127 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:25:09,127 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:25:09,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:25:09,432 INFO L134 CoverageAnalysis]: Checked inductivity of 466 backedges. 374 proven. 2 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2019-09-07 19:25:09,432 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 19:25:09,432 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 -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 19:25:09,442 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:25:09,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:25:09,564 INFO L256 TraceCheckSpWp]: Trace formula consists of 687 conjuncts, 3 conjunts are in the unsatisfiable core [2019-09-07 19:25:09,569 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 19:25:10,586 INFO L134 CoverageAnalysis]: Checked inductivity of 466 backedges. 153 proven. 0 refuted. 0 times theorem prover too weak. 313 trivial. 0 not checked. [2019-09-07 19:25:10,595 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-07 19:25:10,596 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2019-09-07 19:25:10,597 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-07 19:25:10,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-07 19:25:10,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2019-09-07 19:25:10,597 INFO L87 Difference]: Start difference. First operand 236264 states and 348830 transitions. Second operand 7 states. [2019-09-07 19:25:25,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:25:25,328 INFO L93 Difference]: Finished difference Result 453410 states and 658029 transitions. [2019-09-07 19:25:25,329 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-09-07 19:25:25,329 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 420 [2019-09-07 19:25:25,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:25:26,015 INFO L225 Difference]: With dead ends: 453410 [2019-09-07 19:25:26,015 INFO L226 Difference]: Without dead ends: 217094 [2019-09-07 19:25:27,052 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 439 GetRequests, 427 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2019-09-07 19:25:27,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217094 states. [2019-09-07 19:25:30,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217094 to 212936. [2019-09-07 19:25:30,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 212936 states. [2019-09-07 19:25:31,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212936 states to 212936 states and 259651 transitions. [2019-09-07 19:25:31,257 INFO L78 Accepts]: Start accepts. Automaton has 212936 states and 259651 transitions. Word has length 420 [2019-09-07 19:25:31,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:25:31,258 INFO L475 AbstractCegarLoop]: Abstraction has 212936 states and 259651 transitions. [2019-09-07 19:25:31,258 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-07 19:25:31,259 INFO L276 IsEmpty]: Start isEmpty. Operand 212936 states and 259651 transitions. [2019-09-07 19:25:31,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 452 [2019-09-07 19:25:31,282 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:25:31,283 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 19:25:31,283 INFO L418 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:25:31,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:25:31,283 INFO L82 PathProgramCache]: Analyzing trace with hash 1620751346, now seen corresponding path program 1 times [2019-09-07 19:25:31,283 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:25:31,284 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:25:31,284 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:25:31,285 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:25:31,285 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:25:31,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:25:31,678 INFO L134 CoverageAnalysis]: Checked inductivity of 466 backedges. 310 proven. 150 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-09-07 19:25:31,679 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 19:25:31,679 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 -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 19:25:31,691 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:25:31,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:25:31,811 INFO L256 TraceCheckSpWp]: Trace formula consists of 715 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 19:25:31,818 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 19:25:35,490 INFO L134 CoverageAnalysis]: Checked inductivity of 466 backedges. 153 proven. 0 refuted. 0 times theorem prover too weak. 313 trivial. 0 not checked. [2019-09-07 19:25:35,494 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-07 19:25:35,495 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2019-09-07 19:25:35,495 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 19:25:35,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 19:25:35,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2019-09-07 19:25:35,496 INFO L87 Difference]: Start difference. First operand 212936 states and 259651 transitions. Second operand 9 states. [2019-09-07 19:25:51,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:25:51,461 INFO L93 Difference]: Finished difference Result 465188 states and 565149 transitions. [2019-09-07 19:25:51,461 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-09-07 19:25:51,461 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 451 [2019-09-07 19:25:51,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:25:52,076 INFO L225 Difference]: With dead ends: 465188 [2019-09-07 19:25:52,077 INFO L226 Difference]: Without dead ends: 253061 [2019-09-07 19:25:52,873 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 478 GetRequests, 462 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2019-09-07 19:25:53,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253061 states. [2019-09-07 19:25:55,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253061 to 208889. [2019-09-07 19:25:55,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 208889 states. [2019-09-07 19:25:55,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208889 states to 208889 states and 240993 transitions. [2019-09-07 19:25:55,937 INFO L78 Accepts]: Start accepts. Automaton has 208889 states and 240993 transitions. Word has length 451 [2019-09-07 19:25:55,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:25:55,938 INFO L475 AbstractCegarLoop]: Abstraction has 208889 states and 240993 transitions. [2019-09-07 19:25:55,938 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 19:25:55,938 INFO L276 IsEmpty]: Start isEmpty. Operand 208889 states and 240993 transitions. [2019-09-07 19:25:55,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 464 [2019-09-07 19:25:55,956 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:25:55,957 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 19:25:55,957 INFO L418 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:25:55,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:25:55,957 INFO L82 PathProgramCache]: Analyzing trace with hash -1651258600, now seen corresponding path program 1 times [2019-09-07 19:25:55,957 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:25:55,958 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:25:55,958 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:25:55,959 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:25:55,959 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:25:56,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:25:57,337 INFO L134 CoverageAnalysis]: Checked inductivity of 466 backedges. 374 proven. 2 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2019-09-07 19:25:57,337 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 19:25:57,337 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 -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 19:25:57,350 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:25:57,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:25:57,472 INFO L256 TraceCheckSpWp]: Trace formula consists of 730 conjuncts, 7 conjunts are in the unsatisfiable core [2019-09-07 19:25:57,480 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 19:25:57,595 INFO L134 CoverageAnalysis]: Checked inductivity of 466 backedges. 374 proven. 2 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2019-09-07 19:25:57,599 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 19:25:57,600 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 6 [2019-09-07 19:25:57,601 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-07 19:25:57,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-07 19:25:57,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-09-07 19:25:57,602 INFO L87 Difference]: Start difference. First operand 208889 states and 240993 transitions. Second operand 6 states. [2019-09-07 19:26:13,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:26:13,777 INFO L93 Difference]: Finished difference Result 499384 states and 585073 transitions. [2019-09-07 19:26:13,777 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-07 19:26:13,777 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 463 [2019-09-07 19:26:13,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:26:14,390 INFO L225 Difference]: With dead ends: 499384 [2019-09-07 19:26:14,390 INFO L226 Difference]: Without dead ends: 286388 [2019-09-07 19:26:14,572 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 474 GetRequests, 467 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2019-09-07 19:26:14,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286388 states. [2019-09-07 19:26:17,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286388 to 264449. [2019-09-07 19:26:17,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 264449 states. [2019-09-07 19:26:18,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264449 states to 264449 states and 294975 transitions. [2019-09-07 19:26:18,299 INFO L78 Accepts]: Start accepts. Automaton has 264449 states and 294975 transitions. Word has length 463 [2019-09-07 19:26:18,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:26:18,299 INFO L475 AbstractCegarLoop]: Abstraction has 264449 states and 294975 transitions. [2019-09-07 19:26:18,299 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-07 19:26:18,299 INFO L276 IsEmpty]: Start isEmpty. Operand 264449 states and 294975 transitions. [2019-09-07 19:26:18,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 502 [2019-09-07 19:26:18,314 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:26:18,315 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 19:26:18,315 INFO L418 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:26:18,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:26:18,316 INFO L82 PathProgramCache]: Analyzing trace with hash 641957259, now seen corresponding path program 1 times [2019-09-07 19:26:18,316 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:26:18,316 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:26:18,318 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:26:18,318 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:26:18,318 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:26:18,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:26:18,971 WARN L188 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 40 [2019-09-07 19:26:20,806 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 275 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 19:26:20,806 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 19:26:20,806 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 -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 19:26:20,816 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:26:20,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:26:20,945 INFO L256 TraceCheckSpWp]: Trace formula consists of 718 conjuncts, 11 conjunts are in the unsatisfiable core [2019-09-07 19:26:20,953 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 19:26:21,303 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 227 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2019-09-07 19:26:21,317 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-07 19:26:21,318 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [13] total 16 [2019-09-07 19:26:21,320 INFO L454 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-09-07 19:26:21,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-09-07 19:26:21,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2019-09-07 19:26:21,322 INFO L87 Difference]: Start difference. First operand 264449 states and 294975 transitions. Second operand 16 states. [2019-09-07 19:26:27,334 WARN L188 SmtUtils]: Spent 2.57 s on a formula simplification. DAG size of input: 46 DAG size of output: 32 [2019-09-07 19:26:27,529 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 42 [2019-09-07 19:26:37,548 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 43 [2019-09-07 19:26:46,148 WARN L188 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 39 [2019-09-07 19:26:57,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:26:57,933 INFO L93 Difference]: Finished difference Result 534239 states and 600292 transitions. [2019-09-07 19:26:57,934 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2019-09-07 19:26:57,934 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 501 [2019-09-07 19:26:57,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:26:58,522 INFO L225 Difference]: With dead ends: 534239 [2019-09-07 19:26:58,523 INFO L226 Difference]: Without dead ends: 275412 [2019-09-07 19:26:58,736 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 618 GetRequests, 506 SyntacticMatches, 1 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4815 ImplicationChecksByTransitivity, 9.2s TimeCoverageRelationStatistics Valid=2234, Invalid=10422, Unknown=0, NotChecked=0, Total=12656 [2019-09-07 19:26:58,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275412 states. [2019-09-07 19:27:02,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275412 to 271850. [2019-09-07 19:27:02,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 271850 states. [2019-09-07 19:27:03,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271850 states to 271850 states and 300508 transitions. [2019-09-07 19:27:03,023 INFO L78 Accepts]: Start accepts. Automaton has 271850 states and 300508 transitions. Word has length 501 [2019-09-07 19:27:03,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:27:03,024 INFO L475 AbstractCegarLoop]: Abstraction has 271850 states and 300508 transitions. [2019-09-07 19:27:03,024 INFO L476 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-09-07 19:27:03,024 INFO L276 IsEmpty]: Start isEmpty. Operand 271850 states and 300508 transitions. [2019-09-07 19:27:03,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 526 [2019-09-07 19:27:03,039 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:27:03,039 INFO L399 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 19:27:03,039 INFO L418 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:27:03,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:27:03,040 INFO L82 PathProgramCache]: Analyzing trace with hash -1842081293, now seen corresponding path program 1 times [2019-09-07 19:27:03,040 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:27:03,040 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:27:03,041 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:27:03,041 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:27:03,041 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:27:03,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:27:03,450 INFO L134 CoverageAnalysis]: Checked inductivity of 753 backedges. 488 proven. 2 refuted. 0 times theorem prover too weak. 263 trivial. 0 not checked. [2019-09-07 19:27:03,451 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 19:27:03,451 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 -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 19:27:03,466 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:27:03,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:27:03,607 INFO L256 TraceCheckSpWp]: Trace formula consists of 841 conjuncts, 16 conjunts are in the unsatisfiable core [2019-09-07 19:27:03,612 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 19:27:03,639 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-09-07 19:27:04,969 INFO L134 CoverageAnalysis]: Checked inductivity of 753 backedges. 320 proven. 0 refuted. 0 times theorem prover too weak. 433 trivial. 0 not checked. [2019-09-07 19:27:04,973 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-07 19:27:04,974 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2019-09-07 19:27:04,975 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 19:27:04,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 19:27:04,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-09-07 19:27:04,975 INFO L87 Difference]: Start difference. First operand 271850 states and 300508 transitions. Second operand 9 states. [2019-09-07 19:27:31,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:27:31,631 INFO L93 Difference]: Finished difference Result 599017 states and 681602 transitions. [2019-09-07 19:27:31,632 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2019-09-07 19:27:31,632 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 525 [2019-09-07 19:27:31,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:27:32,809 INFO L225 Difference]: With dead ends: 599017 [2019-09-07 19:27:32,810 INFO L226 Difference]: Without dead ends: 327976 [2019-09-07 19:27:32,974 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 576 GetRequests, 545 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=221, Invalid=835, Unknown=0, NotChecked=0, Total=1056 [2019-09-07 19:27:33,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327976 states. [2019-09-07 19:27:36,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327976 to 324578. [2019-09-07 19:27:36,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 324578 states. [2019-09-07 19:27:38,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324578 states to 324578 states and 360026 transitions. [2019-09-07 19:27:38,112 INFO L78 Accepts]: Start accepts. Automaton has 324578 states and 360026 transitions. Word has length 525 [2019-09-07 19:27:38,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:27:38,114 INFO L475 AbstractCegarLoop]: Abstraction has 324578 states and 360026 transitions. [2019-09-07 19:27:38,114 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 19:27:38,115 INFO L276 IsEmpty]: Start isEmpty. Operand 324578 states and 360026 transitions. [2019-09-07 19:27:38,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 707 [2019-09-07 19:27:38,147 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:27:38,148 INFO L399 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 19:27:38,148 INFO L418 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:27:38,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:27:38,149 INFO L82 PathProgramCache]: Analyzing trace with hash -297789074, now seen corresponding path program 1 times [2019-09-07 19:27:38,149 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:27:38,149 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:27:38,150 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:27:38,150 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:27:38,150 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:27:38,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:27:38,742 INFO L134 CoverageAnalysis]: Checked inductivity of 1327 backedges. 915 proven. 68 refuted. 0 times theorem prover too weak. 344 trivial. 0 not checked. [2019-09-07 19:27:38,742 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 19:27:38,742 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 -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 19:27:38,753 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:27:38,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:27:38,931 INFO L256 TraceCheckSpWp]: Trace formula consists of 1070 conjuncts, 12 conjunts are in the unsatisfiable core [2019-09-07 19:27:38,940 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 19:27:39,013 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-09-07 19:27:42,872 INFO L134 CoverageAnalysis]: Checked inductivity of 1327 backedges. 765 proven. 2 refuted. 0 times theorem prover too weak. 560 trivial. 0 not checked. [2019-09-07 19:27:42,876 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 19:27:42,876 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2019-09-07 19:27:42,878 INFO L454 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-09-07 19:27:42,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-09-07 19:27:42,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2019-09-07 19:27:42,879 INFO L87 Difference]: Start difference. First operand 324578 states and 360026 transitions. Second operand 14 states. [2019-09-07 19:29:02,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:29:02,743 INFO L93 Difference]: Finished difference Result 922202 states and 1076021 transitions. [2019-09-07 19:29:02,744 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 149 states. [2019-09-07 19:29:02,744 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 706 [2019-09-07 19:29:02,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:29:04,301 INFO L225 Difference]: With dead ends: 922202 [2019-09-07 19:29:04,301 INFO L226 Difference]: Without dead ends: 597609 [2019-09-07 19:29:04,580 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 971 GetRequests, 818 SyntacticMatches, 0 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9830 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=2861, Invalid=21009, Unknown=0, NotChecked=0, Total=23870 [2019-09-07 19:29:05,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 597609 states. [2019-09-07 19:29:16,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 597609 to 574319. [2019-09-07 19:29:16,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 574319 states. [2019-09-07 19:29:29,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 574319 states to 574319 states and 652139 transitions. [2019-09-07 19:29:29,650 INFO L78 Accepts]: Start accepts. Automaton has 574319 states and 652139 transitions. Word has length 706 [2019-09-07 19:29:29,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:29:29,651 INFO L475 AbstractCegarLoop]: Abstraction has 574319 states and 652139 transitions. [2019-09-07 19:29:29,651 INFO L476 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-09-07 19:29:29,651 INFO L276 IsEmpty]: Start isEmpty. Operand 574319 states and 652139 transitions. [2019-09-07 19:29:29,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 762 [2019-09-07 19:29:29,691 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:29:29,691 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 19:29:29,692 INFO L418 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:29:29,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:29:29,692 INFO L82 PathProgramCache]: Analyzing trace with hash -359916531, now seen corresponding path program 1 times [2019-09-07 19:29:29,693 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:29:29,693 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:29:29,693 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:29:29,693 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:29:29,694 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:29:29,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:29:32,071 INFO L134 CoverageAnalysis]: Checked inductivity of 671 backedges. 218 proven. 449 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-09-07 19:29:32,072 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 19:29:32,072 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 -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 19:29:32,083 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:29:32,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:29:32,262 INFO L256 TraceCheckSpWp]: Trace formula consists of 1054 conjuncts, 12 conjunts are in the unsatisfiable core [2019-09-07 19:29:32,271 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 19:29:32,355 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 19:29:33,111 INFO L134 CoverageAnalysis]: Checked inductivity of 671 backedges. 619 proven. 2 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2019-09-07 19:29:33,117 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 19:29:33,118 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 16 [2019-09-07 19:29:33,119 INFO L454 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-09-07 19:29:33,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-09-07 19:29:33,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2019-09-07 19:29:33,119 INFO L87 Difference]: Start difference. First operand 574319 states and 652139 transitions. Second operand 16 states. [2019-09-07 19:30:29,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:30:29,382 INFO L93 Difference]: Finished difference Result 1042107 states and 1185947 transitions. [2019-09-07 19:30:29,382 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2019-09-07 19:30:29,382 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 761 [2019-09-07 19:30:29,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:30:31,044 INFO L225 Difference]: With dead ends: 1042107 [2019-09-07 19:30:31,045 INFO L226 Difference]: Without dead ends: 635747 [2019-09-07 19:30:31,450 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 952 GetRequests, 841 SyntacticMatches, 1 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4746 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=1779, Invalid=10653, Unknown=0, NotChecked=0, Total=12432 [2019-09-07 19:30:31,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 635747 states. [2019-09-07 19:30:39,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 635747 to 626835. [2019-09-07 19:30:39,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 626835 states. [2019-09-07 19:30:41,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 626835 states to 626835 states and 702866 transitions. [2019-09-07 19:30:41,178 INFO L78 Accepts]: Start accepts. Automaton has 626835 states and 702866 transitions. Word has length 761 [2019-09-07 19:30:41,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:30:41,178 INFO L475 AbstractCegarLoop]: Abstraction has 626835 states and 702866 transitions. [2019-09-07 19:30:41,178 INFO L476 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-09-07 19:30:41,178 INFO L276 IsEmpty]: Start isEmpty. Operand 626835 states and 702866 transitions. [2019-09-07 19:30:41,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1122 [2019-09-07 19:30:41,284 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:30:41,285 INFO L399 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 19:30:41,286 INFO L418 AbstractCegarLoop]: === Iteration 17 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:30:41,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:30:41,286 INFO L82 PathProgramCache]: Analyzing trace with hash 1831691779, now seen corresponding path program 1 times [2019-09-07 19:30:41,286 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:30:41,287 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:30:41,287 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:30:41,287 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:30:41,288 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:30:41,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:30:49,479 INFO L134 CoverageAnalysis]: Checked inductivity of 1679 backedges. 408 proven. 147 refuted. 0 times theorem prover too weak. 1124 trivial. 0 not checked. [2019-09-07 19:30:49,480 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 19:30:49,480 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-07 19:30:49,493 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 19:30:49,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:30:49,780 INFO L256 TraceCheckSpWp]: Trace formula consists of 1541 conjuncts, 10 conjunts are in the unsatisfiable core [2019-09-07 19:30:49,789 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 19:30:49,834 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 19:30:50,532 INFO L134 CoverageAnalysis]: Checked inductivity of 1679 backedges. 1387 proven. 2 refuted. 0 times theorem prover too weak. 290 trivial. 0 not checked. [2019-09-07 19:30:50,539 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 19:30:50,540 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2019-09-07 19:30:50,541 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 19:30:50,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 19:30:50,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-09-07 19:30:50,541 INFO L87 Difference]: Start difference. First operand 626835 states and 702866 transitions. Second operand 9 states. [2019-09-07 19:31:23,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:31:23,244 INFO L93 Difference]: Finished difference Result 1138884 states and 1327516 transitions. [2019-09-07 19:31:23,245 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2019-09-07 19:31:23,245 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 1121 [2019-09-07 19:31:23,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:31:26,971 INFO L225 Difference]: With dead ends: 1138884 [2019-09-07 19:31:26,972 INFO L226 Difference]: Without dead ends: 740716 [2019-09-07 19:31:27,405 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 1227 GetRequests, 1169 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1252 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=553, Invalid=2987, Unknown=0, NotChecked=0, Total=3540 [2019-09-07 19:31:27,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 740716 states. [2019-09-07 19:31:48,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 740716 to 704209. [2019-09-07 19:31:48,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 704209 states. [2019-09-07 19:32:00,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 704209 states to 704209 states and 789790 transitions. [2019-09-07 19:32:00,827 INFO L78 Accepts]: Start accepts. Automaton has 704209 states and 789790 transitions. Word has length 1121 [2019-09-07 19:32:00,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:32:00,828 INFO L475 AbstractCegarLoop]: Abstraction has 704209 states and 789790 transitions. [2019-09-07 19:32:00,828 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 19:32:00,829 INFO L276 IsEmpty]: Start isEmpty. Operand 704209 states and 789790 transitions. [2019-09-07 19:32:00,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1150 [2019-09-07 19:32:00,922 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:32:00,923 INFO L399 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 19:32:00,923 INFO L418 AbstractCegarLoop]: === Iteration 18 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:32:00,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:32:00,924 INFO L82 PathProgramCache]: Analyzing trace with hash 1951975093, now seen corresponding path program 1 times [2019-09-07 19:32:00,924 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:32:00,924 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:32:00,925 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:32:00,925 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:32:00,925 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:32:01,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:32:03,104 INFO L134 CoverageAnalysis]: Checked inductivity of 1606 backedges. 802 proven. 2 refuted. 0 times theorem prover too weak. 802 trivial. 0 not checked. [2019-09-07 19:32:03,104 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 19:32:03,104 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 -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 19:32:03,114 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:32:03,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:32:03,416 INFO L256 TraceCheckSpWp]: Trace formula consists of 1560 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 19:32:03,428 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 19:32:03,982 INFO L134 CoverageAnalysis]: Checked inductivity of 1606 backedges. 802 proven. 2 refuted. 0 times theorem prover too weak. 802 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (15)] Exception during sending of exit command (exit): Broken pipe [2019-09-07 19:32:04,031 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 19:32:04,031 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2019-09-07 19:32:04,032 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-07 19:32:04,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-07 19:32:04,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-09-07 19:32:04,033 INFO L87 Difference]: Start difference. First operand 704209 states and 789790 transitions. Second operand 6 states. [2019-09-07 19:32:18,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:32:18,268 INFO L93 Difference]: Finished difference Result 1344047 states and 1506243 transitions. [2019-09-07 19:32:18,268 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-09-07 19:32:18,269 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 1149 [2019-09-07 19:32:18,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:32:21,131 INFO L225 Difference]: With dead ends: 1344047 [2019-09-07 19:32:21,132 INFO L226 Difference]: Without dead ends: 672239 [2019-09-07 19:32:21,660 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 1163 GetRequests, 1154 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2019-09-07 19:32:22,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 672239 states.