/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem12_label33.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-06 19:11:22,231 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-06 19:11:22,234 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-06 19:11:22,249 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-06 19:11:22,249 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-06 19:11:22,250 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-06 19:11:22,252 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-06 19:11:22,254 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-06 19:11:22,255 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-06 19:11:22,256 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-06 19:11:22,257 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-06 19:11:22,258 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-06 19:11:22,259 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-06 19:11:22,260 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-06 19:11:22,262 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-06 19:11:22,263 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-06 19:11:22,264 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-06 19:11:22,267 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-06 19:11:22,270 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-06 19:11:22,272 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-06 19:11:22,274 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-06 19:11:22,275 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-06 19:11:22,277 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-06 19:11:22,278 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-06 19:11:22,282 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-06 19:11:22,296 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-06 19:11:22,300 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-06 19:11:22,301 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-06 19:11:22,302 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 19:11:22,327 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-06 19:11:22,327 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-06 19:11:22,331 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-06 19:11:22,331 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-06 19:11:22,332 INFO L138 SettingsManager]: * Use SBE=true [2019-11-06 19:11:22,332 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-06 19:11:22,332 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-06 19:11:22,332 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-06 19:11:22,332 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-06 19:11:22,332 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-06 19:11:22,334 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-06 19:11:22,334 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-06 19:11:22,334 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-06 19:11:22,334 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-06 19:11:22,335 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-06 19:11:22,335 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-06 19:11:22,335 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-06 19:11:22,335 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-06 19:11:22,335 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-06 19:11:22,337 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-06 19:11:22,337 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-06 19:11:22,338 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 19:11:22,338 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-06 19:11:22,340 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-06 19:11:22,340 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-06 19:11:22,341 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-06 19:11:22,341 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-06 19:11:22,341 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-06 19:11:22,341 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-06 19:11:22,629 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-06 19:11:22,649 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-06 19:11:22,653 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-06 19:11:22,654 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-06 19:11:22,654 INFO L275 PluginConnector]: CDTParser initialized [2019-11-06 19:11:22,655 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label33.c [2019-11-06 19:11:22,728 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7040ba375/07aaa62787c94ccd83fd85df5111454f/FLAGe551ca1ae [2019-11-06 19:11:23,432 INFO L306 CDTParser]: Found 1 translation units. [2019-11-06 19:11:23,434 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label33.c [2019-11-06 19:11:23,464 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7040ba375/07aaa62787c94ccd83fd85df5111454f/FLAGe551ca1ae [2019-11-06 19:11:23,561 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7040ba375/07aaa62787c94ccd83fd85df5111454f [2019-11-06 19:11:23,572 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-06 19:11:23,573 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-06 19:11:23,575 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-06 19:11:23,575 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-06 19:11:23,579 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-06 19:11:23,580 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 07:11:23" (1/1) ... [2019-11-06 19:11:23,583 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9e92733 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:11:23, skipping insertion in model container [2019-11-06 19:11:23,583 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 07:11:23" (1/1) ... [2019-11-06 19:11:23,592 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-06 19:11:23,743 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-06 19:11:25,201 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 19:11:25,214 INFO L188 MainTranslator]: Completed pre-run [2019-11-06 19:11:25,819 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 19:11:25,848 INFO L192 MainTranslator]: Completed translation [2019-11-06 19:11:25,849 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:11:25 WrapperNode [2019-11-06 19:11:25,850 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-06 19:11:25,850 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-06 19:11:25,850 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-06 19:11:25,851 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-06 19:11:25,864 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:11:25" (1/1) ... [2019-11-06 19:11:25,865 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:11:25" (1/1) ... [2019-11-06 19:11:25,922 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:11:25" (1/1) ... [2019-11-06 19:11:25,923 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:11:25" (1/1) ... [2019-11-06 19:11:26,029 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:11:25" (1/1) ... [2019-11-06 19:11:26,055 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:11:25" (1/1) ... [2019-11-06 19:11:26,092 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:11:25" (1/1) ... [2019-11-06 19:11:26,125 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-06 19:11:26,125 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-06 19:11:26,125 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-06 19:11:26,125 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-06 19:11:26,127 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:11:25" (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 19:11:26,189 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-06 19:11:26,189 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-06 19:11:26,189 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-11-06 19:11:26,189 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-11-06 19:11:26,189 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2019-11-06 19:11:26,190 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2019-11-06 19:11:26,190 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-06 19:11:26,190 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-11-06 19:11:26,190 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-11-06 19:11:26,190 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2019-11-06 19:11:26,190 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2019-11-06 19:11:26,191 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-06 19:11:26,191 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-06 19:11:26,191 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-06 19:11:26,191 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-06 19:11:26,191 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-06 19:11:26,192 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-06 19:11:30,776 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-06 19:11:30,777 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-11-06 19:11:30,780 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 07:11:30 BoogieIcfgContainer [2019-11-06 19:11:30,780 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-06 19:11:30,782 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-06 19:11:30,782 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-06 19:11:30,785 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-06 19:11:30,785 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 07:11:23" (1/3) ... [2019-11-06 19:11:30,786 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b52f2fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 07:11:30, skipping insertion in model container [2019-11-06 19:11:30,787 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:11:25" (2/3) ... [2019-11-06 19:11:30,787 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b52f2fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 07:11:30, skipping insertion in model container [2019-11-06 19:11:30,787 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 07:11:30" (3/3) ... [2019-11-06 19:11:30,798 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem12_label33.c [2019-11-06 19:11:30,808 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-06 19:11:30,817 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-06 19:11:30,829 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-06 19:11:30,863 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-06 19:11:30,863 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-06 19:11:30,863 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-06 19:11:30,864 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-06 19:11:30,864 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-06 19:11:30,864 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-06 19:11:30,864 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-06 19:11:30,864 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-06 19:11:30,899 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states. [2019-11-06 19:11:30,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2019-11-06 19:11:30,908 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 19:11:30,909 INFO L410 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] [2019-11-06 19:11:30,911 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 19:11:30,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 19:11:30,917 INFO L82 PathProgramCache]: Analyzing trace with hash -1837034062, now seen corresponding path program 1 times [2019-11-06 19:11:30,927 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 19:11:30,928 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801429502] [2019-11-06 19:11:30,928 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 19:11:31,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:11:31,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:11:31,329 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 19:11:31,329 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801429502] [2019-11-06 19:11:31,330 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 19:11:31,331 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-06 19:11:31,333 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001004890] [2019-11-06 19:11:31,338 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-06 19:11:31,339 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 19:11:31,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-06 19:11:31,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-06 19:11:31,356 INFO L87 Difference]: Start difference. First operand 839 states. Second operand 5 states. [2019-11-06 19:11:44,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 19:11:44,208 INFO L93 Difference]: Finished difference Result 3269 states and 6302 transitions. [2019-11-06 19:11:44,209 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-06 19:11:44,210 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 55 [2019-11-06 19:11:44,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 19:11:44,244 INFO L225 Difference]: With dead ends: 3269 [2019-11-06 19:11:44,245 INFO L226 Difference]: Without dead ends: 2346 [2019-11-06 19:11:44,255 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-11-06 19:11:44,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2346 states. [2019-11-06 19:11:44,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2346 to 2342. [2019-11-06 19:11:44,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2342 states. [2019-11-06 19:11:44,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2342 states to 2342 states and 3858 transitions. [2019-11-06 19:11:44,429 INFO L78 Accepts]: Start accepts. Automaton has 2342 states and 3858 transitions. Word has length 55 [2019-11-06 19:11:44,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 19:11:44,430 INFO L462 AbstractCegarLoop]: Abstraction has 2342 states and 3858 transitions. [2019-11-06 19:11:44,430 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-06 19:11:44,430 INFO L276 IsEmpty]: Start isEmpty. Operand 2342 states and 3858 transitions. [2019-11-06 19:11:44,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2019-11-06 19:11:44,438 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 19:11:44,439 INFO L410 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:11:44,439 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 19:11:44,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 19:11:44,440 INFO L82 PathProgramCache]: Analyzing trace with hash -1114761445, now seen corresponding path program 1 times [2019-11-06 19:11:44,440 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 19:11:44,440 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122739581] [2019-11-06 19:11:44,440 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 19:11:44,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:11:44,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:11:44,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:11:44,946 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 19:11:44,946 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122739581] [2019-11-06 19:11:44,947 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 19:11:44,947 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-11-06 19:11:44,947 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969814178] [2019-11-06 19:11:44,949 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-06 19:11:44,950 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 19:11:44,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-06 19:11:44,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2019-11-06 19:11:44,951 INFO L87 Difference]: Start difference. First operand 2342 states and 3858 transitions. Second operand 9 states. [2019-11-06 19:11:58,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 19:11:58,563 INFO L93 Difference]: Finished difference Result 9505 states and 16081 transitions. [2019-11-06 19:11:58,563 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-11-06 19:11:58,564 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 154 [2019-11-06 19:11:58,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 19:11:58,609 INFO L225 Difference]: With dead ends: 9505 [2019-11-06 19:11:58,609 INFO L226 Difference]: Without dead ends: 7169 [2019-11-06 19:11:58,617 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2019-11-06 19:11:58,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7169 states. [2019-11-06 19:11:58,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7169 to 7153. [2019-11-06 19:11:58,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7153 states. [2019-11-06 19:11:58,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7153 states to 7153 states and 10809 transitions. [2019-11-06 19:11:58,841 INFO L78 Accepts]: Start accepts. Automaton has 7153 states and 10809 transitions. Word has length 154 [2019-11-06 19:11:58,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 19:11:58,844 INFO L462 AbstractCegarLoop]: Abstraction has 7153 states and 10809 transitions. [2019-11-06 19:11:58,844 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-06 19:11:58,844 INFO L276 IsEmpty]: Start isEmpty. Operand 7153 states and 10809 transitions. [2019-11-06 19:11:58,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2019-11-06 19:11:58,854 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 19:11:58,855 INFO L410 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:11:58,855 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 19:11:58,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 19:11:58,857 INFO L82 PathProgramCache]: Analyzing trace with hash -1950696993, now seen corresponding path program 1 times [2019-11-06 19:11:58,857 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 19:11:58,857 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912309400] [2019-11-06 19:11:58,857 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 19:11:58,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:11:59,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:11:59,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:11:59,191 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 47 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 19:11:59,191 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912309400] [2019-11-06 19:11:59,192 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1373008739] [2019-11-06 19:11:59,192 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 19:11:59,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:11:59,305 INFO L256 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-06 19:11:59,316 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 19:11:59,398 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 19:11:59,399 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-06 19:11:59,399 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2019-11-06 19:11:59,399 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133854261] [2019-11-06 19:11:59,400 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-06 19:11:59,400 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 19:11:59,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-06 19:11:59,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-11-06 19:11:59,401 INFO L87 Difference]: Start difference. First operand 7153 states and 10809 transitions. Second operand 3 states.