/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --abstractinterpretationv2.abstract.domain IntervalDomain --traceabstraction.trace.refinement.strategy TAIPAN --traceabstraction.abstract.interpretation.mode USE_PREDICATES -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label58.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-06 22:44:40,840 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-06 22:44:40,844 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-06 22:44:40,858 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-06 22:44:40,859 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-06 22:44:40,860 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-06 22:44:40,861 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-06 22:44:40,863 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-06 22:44:40,866 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-06 22:44:40,866 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-06 22:44:40,867 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-06 22:44:40,869 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-06 22:44:40,869 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-06 22:44:40,870 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-06 22:44:40,871 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-06 22:44:40,873 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-06 22:44:40,874 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-06 22:44:40,875 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-06 22:44:40,877 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-06 22:44:40,879 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-06 22:44:40,881 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-06 22:44:40,882 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-06 22:44:40,884 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-06 22:44:40,884 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-06 22:44:40,887 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-06 22:44:40,901 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-06 22:44:40,902 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-06 22:44:40,903 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-06 22:44:40,905 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 [2019-11-06 22:44:40,932 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-06 22:44:40,933 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-06 22:44:40,934 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-06 22:44:40,934 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-06 22:44:40,934 INFO L138 SettingsManager]: * Use SBE=true [2019-11-06 22:44:40,935 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-06 22:44:40,935 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-06 22:44:40,935 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-06 22:44:40,935 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-06 22:44:40,936 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-06 22:44:40,936 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-06 22:44:40,936 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-06 22:44:40,936 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-06 22:44:40,936 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-06 22:44:40,937 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-06 22:44:40,937 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-06 22:44:40,937 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-06 22:44:40,937 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-06 22:44:40,937 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-06 22:44:40,938 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-06 22:44:40,938 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-06 22:44:40,938 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 22:44:40,938 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-06 22:44:40,938 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-06 22:44:40,939 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-06 22:44:40,939 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-06 22:44:40,939 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-06 22:44:40,939 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-06 22:44:40,939 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-11-06 22:44:41,228 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-06 22:44:41,241 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-06 22:44:41,245 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-06 22:44:41,246 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-06 22:44:41,247 INFO L275 PluginConnector]: CDTParser initialized [2019-11-06 22:44:41,248 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label58.c [2019-11-06 22:44:41,327 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/930e79212/223f56bbab2a4cd78c6739250e0a44d9/FLAG1d5d7e0a1 [2019-11-06 22:44:41,875 INFO L306 CDTParser]: Found 1 translation units. [2019-11-06 22:44:41,876 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem10_label58.c [2019-11-06 22:44:41,898 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/930e79212/223f56bbab2a4cd78c6739250e0a44d9/FLAG1d5d7e0a1 [2019-11-06 22:44:42,162 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/930e79212/223f56bbab2a4cd78c6739250e0a44d9 [2019-11-06 22:44:42,172 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-06 22:44:42,174 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-06 22:44:42,175 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-06 22:44:42,175 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-06 22:44:42,179 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-06 22:44:42,180 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:44:42" (1/1) ... [2019-11-06 22:44:42,182 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b75b89f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:42, skipping insertion in model container [2019-11-06 22:44:42,183 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:44:42" (1/1) ... [2019-11-06 22:44:42,190 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-06 22:44:42,244 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-06 22:44:42,768 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 22:44:42,781 INFO L188 MainTranslator]: Completed pre-run [2019-11-06 22:44:42,892 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 22:44:42,913 INFO L192 MainTranslator]: Completed translation [2019-11-06 22:44:42,913 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:42 WrapperNode [2019-11-06 22:44:42,913 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-06 22:44:42,914 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-06 22:44:42,914 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-06 22:44:42,915 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-06 22:44:42,928 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:42" (1/1) ... [2019-11-06 22:44:42,928 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:42" (1/1) ... [2019-11-06 22:44:42,956 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:42" (1/1) ... [2019-11-06 22:44:42,957 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:42" (1/1) ... [2019-11-06 22:44:43,002 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:42" (1/1) ... [2019-11-06 22:44:43,014 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:42" (1/1) ... [2019-11-06 22:44:43,021 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:42" (1/1) ... [2019-11-06 22:44:43,032 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-06 22:44:43,033 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-06 22:44:43,033 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-06 22:44:43,033 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-06 22:44:43,034 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:42" (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 [2019-11-06 22:44:43,114 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-06 22:44:43,115 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-06 22:44:43,115 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-11-06 22:44:43,115 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-06 22:44:43,115 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-11-06 22:44:43,116 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-06 22:44:43,116 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-06 22:44:43,117 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-06 22:44:43,117 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-06 22:44:43,117 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-06 22:44:43,118 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-06 22:44:44,440 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-06 22:44:44,441 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-11-06 22:44:44,443 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:44:44 BoogieIcfgContainer [2019-11-06 22:44:44,444 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-06 22:44:44,445 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-06 22:44:44,446 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-06 22:44:44,450 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-06 22:44:44,450 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:44:42" (1/3) ... [2019-11-06 22:44:44,451 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22e14baf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:44:44, skipping insertion in model container [2019-11-06 22:44:44,451 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:42" (2/3) ... [2019-11-06 22:44:44,452 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22e14baf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:44:44, skipping insertion in model container [2019-11-06 22:44:44,452 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:44:44" (3/3) ... [2019-11-06 22:44:44,461 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label58.c [2019-11-06 22:44:44,476 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-06 22:44:44,485 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-06 22:44:44,497 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-06 22:44:44,525 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-06 22:44:44,526 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-06 22:44:44,526 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-06 22:44:44,526 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-06 22:44:44,526 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-06 22:44:44,526 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-06 22:44:44,527 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-06 22:44:44,527 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-06 22:44:44,558 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states. [2019-11-06 22:44:44,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-11-06 22:44:44,565 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:44:44,566 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:44:44,568 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:44:44,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:44:44,574 INFO L82 PathProgramCache]: Analyzing trace with hash -1079521594, now seen corresponding path program 1 times [2019-11-06 22:44:44,583 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:44:44,583 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346525673] [2019-11-06 22:44:44,583 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:44:44,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:44:44,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:44:44,794 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346525673] [2019-11-06 22:44:44,795 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:44:44,795 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-06 22:44:44,797 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843743987] [2019-11-06 22:44:44,802 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 22:44:44,804 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:44:44,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 22:44:44,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-06 22:44:44,822 INFO L87 Difference]: Start difference. First operand 215 states. Second operand 4 states. [2019-11-06 22:44:46,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:44:46,416 INFO L93 Difference]: Finished difference Result 733 states and 1294 transitions. [2019-11-06 22:44:46,419 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-06 22:44:46,421 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2019-11-06 22:44:46,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:44:46,443 INFO L225 Difference]: With dead ends: 733 [2019-11-06 22:44:46,444 INFO L226 Difference]: Without dead ends: 437 [2019-11-06 22:44:46,452 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-06 22:44:46,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states. [2019-11-06 22:44:46,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 437. [2019-11-06 22:44:46,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 437 states. [2019-11-06 22:44:46,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437 states to 437 states and 633 transitions. [2019-11-06 22:44:46,551 INFO L78 Accepts]: Start accepts. Automaton has 437 states and 633 transitions. Word has length 19 [2019-11-06 22:44:46,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:44:46,551 INFO L462 AbstractCegarLoop]: Abstraction has 437 states and 633 transitions. [2019-11-06 22:44:46,552 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 22:44:46,552 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states and 633 transitions. [2019-11-06 22:44:46,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2019-11-06 22:44:46,556 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:44:46,557 INFO L410 BasicCegarLoop]: trace histogram [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] [2019-11-06 22:44:46,557 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:44:46,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:44:46,558 INFO L82 PathProgramCache]: Analyzing trace with hash 1696713450, now seen corresponding path program 1 times [2019-11-06 22:44:46,558 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:44:46,558 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714320924] [2019-11-06 22:44:46,558 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:44:46,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:44:46,817 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:44:46,817 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714320924] [2019-11-06 22:44:46,818 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:44:46,818 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-06 22:44:46,818 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107780167] [2019-11-06 22:44:46,820 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-06 22:44:46,820 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:44:46,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-06 22:44:46,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-11-06 22:44:46,821 INFO L87 Difference]: Start difference. First operand 437 states and 633 transitions. Second operand 6 states. [2019-11-06 22:44:47,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:44:47,839 INFO L93 Difference]: Finished difference Result 1329 states and 2004 transitions. [2019-11-06 22:44:47,840 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-06 22:44:47,841 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 93 [2019-11-06 22:44:47,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:44:47,851 INFO L225 Difference]: With dead ends: 1329 [2019-11-06 22:44:47,851 INFO L226 Difference]: Without dead ends: 898 [2019-11-06 22:44:47,853 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-11-06 22:44:47,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 898 states. [2019-11-06 22:44:47,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 898 to 880. [2019-11-06 22:44:47,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 880 states. [2019-11-06 22:44:47,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 880 states to 880 states and 1284 transitions. [2019-11-06 22:44:47,914 INFO L78 Accepts]: Start accepts. Automaton has 880 states and 1284 transitions. Word has length 93 [2019-11-06 22:44:47,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:44:47,915 INFO L462 AbstractCegarLoop]: Abstraction has 880 states and 1284 transitions. [2019-11-06 22:44:47,915 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-06 22:44:47,916 INFO L276 IsEmpty]: Start isEmpty. Operand 880 states and 1284 transitions. [2019-11-06 22:44:47,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2019-11-06 22:44:47,919 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:44:47,919 INFO L410 BasicCegarLoop]: trace histogram [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] [2019-11-06 22:44:47,920 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:44:47,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:44:47,920 INFO L82 PathProgramCache]: Analyzing trace with hash -1178531378, now seen corresponding path program 1 times [2019-11-06 22:44:47,920 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:44:47,921 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865667145] [2019-11-06 22:44:47,921 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:44:47,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:44:48,076 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:44:48,077 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865667145] [2019-11-06 22:44:48,077 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:44:48,077 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-06 22:44:48,080 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695871523] [2019-11-06 22:44:48,080 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-06 22:44:48,080 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:44:48,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-06 22:44:48,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-11-06 22:44:48,082 INFO L87 Difference]: Start difference. First operand 880 states and 1284 transitions. Second operand 6 states. [2019-11-06 22:44:49,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:44:49,071 INFO L93 Difference]: Finished difference Result 2219 states and 3338 transitions. [2019-11-06 22:44:49,072 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-06 22:44:49,073 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 95 [2019-11-06 22:44:49,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:44:49,083 INFO L225 Difference]: With dead ends: 2219 [2019-11-06 22:44:49,084 INFO L226 Difference]: Without dead ends: 1345 [2019-11-06 22:44:49,086 INFO L630 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 [2019-11-06 22:44:49,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1345 states. [2019-11-06 22:44:49,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1345 to 1039. [2019-11-06 22:44:49,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1039 states. [2019-11-06 22:44:49,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1039 states to 1039 states and 1451 transitions. [2019-11-06 22:44:49,139 INFO L78 Accepts]: Start accepts. Automaton has 1039 states and 1451 transitions. Word has length 95 [2019-11-06 22:44:49,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:44:49,140 INFO L462 AbstractCegarLoop]: Abstraction has 1039 states and 1451 transitions. [2019-11-06 22:44:49,140 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-06 22:44:49,140 INFO L276 IsEmpty]: Start isEmpty. Operand 1039 states and 1451 transitions. [2019-11-06 22:44:49,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2019-11-06 22:44:49,143 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:44:49,144 INFO L410 BasicCegarLoop]: trace histogram [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] [2019-11-06 22:44:49,144 INFO L410 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:44:49,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:44:49,144 INFO L82 PathProgramCache]: Analyzing trace with hash -921580439, now seen corresponding path program 1 times [2019-11-06 22:44:49,145 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:44:49,145 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177867122] [2019-11-06 22:44:49,145 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:44:49,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:44:49,238 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:44:49,238 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177867122] [2019-11-06 22:44:49,238 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:44:49,239 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-06 22:44:49,239 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592259898] [2019-11-06 22:44:49,241 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 22:44:49,241 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:44:49,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 22:44:49,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-06 22:44:49,242 INFO L87 Difference]: Start difference. First operand 1039 states and 1451 transitions. Second operand 4 states. [2019-11-06 22:44:50,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:44:50,166 INFO L93 Difference]: Finished difference Result 2360 states and 3320 transitions. [2019-11-06 22:44:50,166 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-06 22:44:50,166 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 98 [2019-11-06 22:44:50,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:44:50,173 INFO L225 Difference]: With dead ends: 2360 [2019-11-06 22:44:50,173 INFO L226 Difference]: Without dead ends: 1327 [2019-11-06 22:44:50,176 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-06 22:44:50,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1327 states. [2019-11-06 22:44:50,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1327 to 1327. [2019-11-06 22:44:50,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1327 states. [2019-11-06 22:44:50,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1327 states to 1327 states and 1706 transitions. [2019-11-06 22:44:50,215 INFO L78 Accepts]: Start accepts. Automaton has 1327 states and 1706 transitions. Word has length 98 [2019-11-06 22:44:50,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:44:50,216 INFO L462 AbstractCegarLoop]: Abstraction has 1327 states and 1706 transitions. [2019-11-06 22:44:50,216 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 22:44:50,216 INFO L276 IsEmpty]: Start isEmpty. Operand 1327 states and 1706 transitions. [2019-11-06 22:44:50,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2019-11-06 22:44:50,218 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:44:50,218 INFO L410 BasicCegarLoop]: trace histogram [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] [2019-11-06 22:44:50,218 INFO L410 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:44:50,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:44:50,219 INFO L82 PathProgramCache]: Analyzing trace with hash 1133582729, now seen corresponding path program 1 times [2019-11-06 22:44:50,219 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:44:50,219 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598360373] [2019-11-06 22:44:50,220 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:44:50,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:44:50,333 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:44:50,334 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598360373] [2019-11-06 22:44:50,334 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:44:50,335 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-06 22:44:50,335 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725194013] [2019-11-06 22:44:50,335 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-06 22:44:50,336 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:44:50,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-06 22:44:50,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-11-06 22:44:50,336 INFO L87 Difference]: Start difference. First operand 1327 states and 1706 transitions. Second operand 6 states. [2019-11-06 22:44:51,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:44:51,209 INFO L93 Difference]: Finished difference Result 3296 states and 4411 transitions. [2019-11-06 22:44:51,218 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-06 22:44:51,218 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 114 [2019-11-06 22:44:51,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:44:51,228 INFO L225 Difference]: With dead ends: 3296 [2019-11-06 22:44:51,229 INFO L226 Difference]: Without dead ends: 1975 [2019-11-06 22:44:51,232 INFO L630 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 [2019-11-06 22:44:51,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1975 states. [2019-11-06 22:44:51,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1975 to 1784. [2019-11-06 22:44:51,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1784 states. [2019-11-06 22:44:51,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1784 states to 1784 states and 2199 transitions. [2019-11-06 22:44:51,284 INFO L78 Accepts]: Start accepts. Automaton has 1784 states and 2199 transitions. Word has length 114 [2019-11-06 22:44:51,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:44:51,285 INFO L462 AbstractCegarLoop]: Abstraction has 1784 states and 2199 transitions. [2019-11-06 22:44:51,285 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-06 22:44:51,285 INFO L276 IsEmpty]: Start isEmpty. Operand 1784 states and 2199 transitions. [2019-11-06 22:44:51,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2019-11-06 22:44:51,288 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:44:51,288 INFO L410 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:44:51,289 INFO L410 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:44:51,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:44:51,289 INFO L82 PathProgramCache]: Analyzing trace with hash -306672650, now seen corresponding path program 1 times [2019-11-06 22:44:51,289 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:44:51,289 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328904653] [2019-11-06 22:44:51,290 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:44:51,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:44:51,438 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2019-11-06 22:44:51,439 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328904653] [2019-11-06 22:44:51,439 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1478724118] [2019-11-06 22:44:51,439 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 22:44:51,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:44:51,530 INFO L256 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-06 22:44:51,542 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 22:44:51,610 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2019-11-06 22:44:51,610 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-06 22:44:51,724 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2019-11-06 22:44:51,724 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-06 22:44:51,725 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 5 [2019-11-06 22:44:51,725 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358585960] [2019-11-06 22:44:51,726 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-06 22:44:51,726 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:44:51,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-06 22:44:51,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-06 22:44:51,726 INFO L87 Difference]: Start difference. First operand 1784 states and 2199 transitions. Second operand 3 states. [2019-11-06 22:44:52,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:44:52,311 INFO L93 Difference]: Finished difference Result 2793 states and 3473 transitions. [2019-11-06 22:44:52,312 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-06 22:44:52,312 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 187 [2019-11-06 22:44:52,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:44:52,327 INFO L225 Difference]: With dead ends: 2793 [2019-11-06 22:44:52,328 INFO L226 Difference]: Without dead ends: 2791 [2019-11-06 22:44:52,329 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 382 GetRequests, 377 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-06 22:44:52,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2791 states. [2019-11-06 22:44:52,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2791 to 2217. [2019-11-06 22:44:52,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2217 states. [2019-11-06 22:44:52,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2217 states to 2217 states and 2756 transitions. [2019-11-06 22:44:52,403 INFO L78 Accepts]: Start accepts. Automaton has 2217 states and 2756 transitions. Word has length 187 [2019-11-06 22:44:52,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:44:52,406 INFO L462 AbstractCegarLoop]: Abstraction has 2217 states and 2756 transitions. [2019-11-06 22:44:52,406 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-06 22:44:52,406 INFO L276 IsEmpty]: Start isEmpty. Operand 2217 states and 2756 transitions. [2019-11-06 22:44:52,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2019-11-06 22:44:52,413 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:44:52,413 INFO L410 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:44:52,618 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 22:44:52,618 INFO L410 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:44:52,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:44:52,626 INFO L82 PathProgramCache]: Analyzing trace with hash -1031995774, now seen corresponding path program 1 times [2019-11-06 22:44:52,626 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:44:52,626 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629494229] [2019-11-06 22:44:52,627 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:44:52,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:44:52,981 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 25 proven. 5 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2019-11-06 22:44:52,981 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629494229] [2019-11-06 22:44:52,982 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [920912641] [2019-11-06 22:44:52,982 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 22:44:53,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:44:53,117 INFO L256 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-06 22:44:53,143 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 22:44:53,252 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 101 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:44:53,253 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-06 22:44:53,440 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 101 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:44:53,441 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [27816991] [2019-11-06 22:44:53,450 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 240 [2019-11-06 22:44:53,519 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-11-06 22:44:53,519 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-11-06 22:45:05,175 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation.