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/Problem18_label26.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 18:06:51,996 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 18:06:51,999 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 18:06:52,017 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 18:06:52,017 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 18:06:52,019 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 18:06:52,021 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 18:06:52,031 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 18:06:52,036 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 18:06:52,039 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 18:06:52,041 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 18:06:52,043 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 18:06:52,043 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 18:06:52,045 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 18:06:52,047 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 18:06:52,049 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 18:06:52,050 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 18:06:52,051 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 18:06:52,053 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 18:06:52,056 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 18:06:52,057 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 18:06:52,058 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 18:06:52,059 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 18:06:52,060 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 18:06:52,062 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-13 18:06:52,067 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 18:06:52,068 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 18:06:52,069 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 18:06:52,070 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 18:06:52,072 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 18:06:52,073 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 18:06:52,073 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 18:06:52,074 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 18:06:52,074 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 18:06:52,076 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 18:06:52,080 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 18:06:52,081 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 [2019-10-13 18:06:52,117 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 18:06:52,117 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 18:06:52,119 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 18:06:52,119 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 18:06:52,120 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 18:06:52,120 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 18:06:52,120 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 18:06:52,121 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 18:06:52,121 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 18:06:52,121 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 18:06:52,121 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 18:06:52,121 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 18:06:52,122 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 18:06:52,122 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 18:06:52,122 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 18:06:52,125 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 18:06:52,125 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 18:06:52,126 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 18:06:52,126 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 18:06:52,126 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 18:06:52,126 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 18:06:52,127 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 18:06:52,127 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 18:06:52,127 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 18:06:52,127 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 18:06:52,127 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 18:06:52,128 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 18:06:52,128 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 18:06:52,128 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-13 18:06:52,453 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 18:06:52,473 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 18:06:52,477 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 18:06:52,478 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 18:06:52,479 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 18:06:52,480 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label26.c [2019-10-13 18:06:52,566 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7526f3fd3/13dff86a1a204845ae5b4c2d1a9ad024/FLAG7ea8004bd [2019-10-13 18:06:53,291 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 18:06:53,292 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label26.c [2019-10-13 18:06:53,314 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7526f3fd3/13dff86a1a204845ae5b4c2d1a9ad024/FLAG7ea8004bd [2019-10-13 18:06:53,425 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7526f3fd3/13dff86a1a204845ae5b4c2d1a9ad024 [2019-10-13 18:06:53,436 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 18:06:53,438 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 18:06:53,440 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 18:06:53,440 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 18:06:53,444 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 18:06:53,445 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:06:53" (1/1) ... [2019-10-13 18:06:53,448 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f2e0853 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:06:53, skipping insertion in model container [2019-10-13 18:06:53,448 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:06:53" (1/1) ... [2019-10-13 18:06:53,456 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 18:06:53,587 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 18:06:54,711 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 18:06:54,722 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 18:06:55,249 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 18:06:55,277 INFO L192 MainTranslator]: Completed translation [2019-10-13 18:06:55,278 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:06:55 WrapperNode [2019-10-13 18:06:55,278 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 18:06:55,279 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 18:06:55,279 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 18:06:55,279 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 18:06:55,294 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:06:55" (1/1) ... [2019-10-13 18:06:55,294 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:06:55" (1/1) ... [2019-10-13 18:06:55,359 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:06:55" (1/1) ... [2019-10-13 18:06:55,361 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:06:55" (1/1) ... [2019-10-13 18:06:55,450 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:06:55" (1/1) ... [2019-10-13 18:06:55,486 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:06:55" (1/1) ... [2019-10-13 18:06:55,506 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:06:55" (1/1) ... [2019-10-13 18:06:55,526 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 18:06:55,526 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 18:06:55,527 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 18:06:55,527 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 18:06:55,528 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:06:55" (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 [2019-10-13 18:06:55,589 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 18:06:55,590 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 18:06:55,590 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-13 18:06:55,590 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-10-13 18:06:55,590 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2019-10-13 18:06:55,590 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 18:06:55,591 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-13 18:06:55,591 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-10-13 18:06:55,592 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2019-10-13 18:06:55,592 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 18:06:55,592 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 18:06:55,592 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-13 18:06:55,593 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 18:06:55,593 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 18:06:55,594 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 18:06:59,768 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 18:06:59,769 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-13 18:06:59,771 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:06:59 BoogieIcfgContainer [2019-10-13 18:06:59,771 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 18:06:59,774 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 18:06:59,775 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 18:06:59,779 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 18:06:59,779 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 06:06:53" (1/3) ... [2019-10-13 18:06:59,781 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13181492 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:06:59, skipping insertion in model container [2019-10-13 18:06:59,781 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:06:55" (2/3) ... [2019-10-13 18:06:59,781 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13181492 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:06:59, skipping insertion in model container [2019-10-13 18:06:59,781 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:06:59" (3/3) ... [2019-10-13 18:06:59,791 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem18_label26.c [2019-10-13 18:06:59,802 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 18:06:59,813 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 18:06:59,827 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 18:06:59,873 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 18:06:59,873 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 18:06:59,874 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 18:06:59,874 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 18:06:59,874 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 18:06:59,874 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 18:06:59,874 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 18:06:59,874 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 18:06:59,921 INFO L276 IsEmpty]: Start isEmpty. Operand 774 states. [2019-10-13 18:06:59,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2019-10-13 18:06:59,935 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 18:06:59,936 INFO L380 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 18:06:59,939 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 18:06:59,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 18:06:59,945 INFO L82 PathProgramCache]: Analyzing trace with hash 835114033, now seen corresponding path program 1 times [2019-10-13 18:06:59,954 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 18:06:59,954 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486568426] [2019-10-13 18:06:59,955 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:06:59,955 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:06:59,955 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 18:07:00,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:07:00,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:07:00,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 18:07:00,371 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486568426] [2019-10-13 18:07:00,372 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 18:07:00,372 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 18:07:00,373 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669767445] [2019-10-13 18:07:00,378 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 18:07:00,378 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 18:07:00,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 18:07:00,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-10-13 18:07:00,395 INFO L87 Difference]: Start difference. First operand 774 states. Second operand 5 states. [2019-10-13 18:07:10,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 18:07:10,227 INFO L93 Difference]: Finished difference Result 2984 states and 5770 transitions. [2019-10-13 18:07:10,227 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 18:07:10,229 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 68 [2019-10-13 18:07:10,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 18:07:10,264 INFO L225 Difference]: With dead ends: 2984 [2019-10-13 18:07:10,265 INFO L226 Difference]: Without dead ends: 2142 [2019-10-13 18:07:10,275 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-10-13 18:07:10,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2142 states. [2019-10-13 18:07:10,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2142 to 2132. [2019-10-13 18:07:10,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2132 states. [2019-10-13 18:07:10,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2132 states to 2132 states and 3753 transitions. [2019-10-13 18:07:10,467 INFO L78 Accepts]: Start accepts. Automaton has 2132 states and 3753 transitions. Word has length 68 [2019-10-13 18:07:10,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 18:07:10,468 INFO L462 AbstractCegarLoop]: Abstraction has 2132 states and 3753 transitions. [2019-10-13 18:07:10,468 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 18:07:10,468 INFO L276 IsEmpty]: Start isEmpty. Operand 2132 states and 3753 transitions. [2019-10-13 18:07:10,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2019-10-13 18:07:10,488 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 18:07:10,490 INFO L380 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, 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] [2019-10-13 18:07:10,491 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 18:07:10,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 18:07:10,492 INFO L82 PathProgramCache]: Analyzing trace with hash 506598757, now seen corresponding path program 1 times [2019-10-13 18:07:10,492 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 18:07:10,493 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878493871] [2019-10-13 18:07:10,493 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:07:10,493 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:07:10,493 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 18:07:10,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:07:10,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:07:10,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:07:10,815 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 18:07:10,816 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878493871] [2019-10-13 18:07:10,816 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 18:07:10,816 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-13 18:07:10,817 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820102275] [2019-10-13 18:07:10,819 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 18:07:10,819 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 18:07:10,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 18:07:10,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2019-10-13 18:07:10,820 INFO L87 Difference]: Start difference. First operand 2132 states and 3753 transitions. Second operand 9 states. [2019-10-13 18:07:22,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 18:07:22,128 INFO L93 Difference]: Finished difference Result 8641 states and 15457 transitions. [2019-10-13 18:07:22,133 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-10-13 18:07:22,134 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 141 [2019-10-13 18:07:22,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 18:07:22,169 INFO L225 Difference]: With dead ends: 8641 [2019-10-13 18:07:22,169 INFO L226 Difference]: Without dead ends: 6515 [2019-10-13 18:07:22,176 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2019-10-13 18:07:22,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6515 states. [2019-10-13 18:07:22,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6515 to 6485. [2019-10-13 18:07:22,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6485 states. [2019-10-13 18:07:22,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6485 states to 6485 states and 9454 transitions. [2019-10-13 18:07:22,365 INFO L78 Accepts]: Start accepts. Automaton has 6485 states and 9454 transitions. Word has length 141 [2019-10-13 18:07:22,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 18:07:22,365 INFO L462 AbstractCegarLoop]: Abstraction has 6485 states and 9454 transitions. [2019-10-13 18:07:22,366 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 18:07:22,366 INFO L276 IsEmpty]: Start isEmpty. Operand 6485 states and 9454 transitions. [2019-10-13 18:07:22,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2019-10-13 18:07:22,370 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 18:07:22,370 INFO L380 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, 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] [2019-10-13 18:07:22,371 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 18:07:22,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 18:07:22,371 INFO L82 PathProgramCache]: Analyzing trace with hash 238132644, now seen corresponding path program 1 times [2019-10-13 18:07:22,371 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 18:07:22,372 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20173316] [2019-10-13 18:07:22,372 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:07:22,372 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:07:22,372 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 18:07:22,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:07:22,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:07:22,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:07:22,643 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 60 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 18:07:22,643 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20173316] [2019-10-13 18:07:22,643 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [669028305] [2019-10-13 18:07:22,644 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 [2019-10-13 18:07:22,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:07:22,743 INFO L256 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-13 18:07:22,758 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 18:07:22,859 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 18:07:22,860 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 18:07:22,860 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2019-10-13 18:07:22,860 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604940239] [2019-10-13 18:07:22,867 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 18:07:22,868 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 18:07:22,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 18:07:22,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-10-13 18:07:22,870 INFO L87 Difference]: Start difference. First operand 6485 states and 9454 transitions. Second operand 3 states. [2019-10-13 18:07:26,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 18:07:26,748 INFO L93 Difference]: Finished difference Result 19381 states and 28727 transitions. [2019-10-13 18:07:26,749 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 18:07:26,749 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 190 [2019-10-13 18:07:26,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 18:07:26,793 INFO L225 Difference]: With dead ends: 19381 [2019-10-13 18:07:26,794 INFO L226 Difference]: Without dead ends: 10759 [2019-10-13 18:07:26,812 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-10-13 18:07:26,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10759 states. [2019-10-13 18:07:27,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10759 to 10759. [2019-10-13 18:07:27,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10759 states. [2019-10-13 18:07:27,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10759 states to 10759 states and 12806 transitions. [2019-10-13 18:07:27,074 INFO L78 Accepts]: Start accepts. Automaton has 10759 states and 12806 transitions. Word has length 190 [2019-10-13 18:07:27,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 18:07:27,075 INFO L462 AbstractCegarLoop]: Abstraction has 10759 states and 12806 transitions. [2019-10-13 18:07:27,076 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 18:07:27,076 INFO L276 IsEmpty]: Start isEmpty. Operand 10759 states and 12806 transitions. [2019-10-13 18:07:27,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2019-10-13 18:07:27,080 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 18:07:27,081 INFO L380 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2019-10-13 18:07:27,284 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 18:07:27,285 INFO L410 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 18:07:27,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 18:07:27,286 INFO L82 PathProgramCache]: Analyzing trace with hash 756755471, now seen corresponding path program 1 times [2019-10-13 18:07:27,286 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 18:07:27,287 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980497332] [2019-10-13 18:07:27,287 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:07:27,287 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:07:27,287 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 18:07:27,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:07:27,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:07:27,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:07:27,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:07:27,584 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 122 proven. 67 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-10-13 18:07:27,585 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980497332] [2019-10-13 18:07:27,585 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1908884411] [2019-10-13 18:07:27,585 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 [2019-10-13 18:07:27,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:07:27,676 INFO L256 TraceCheckSpWp]: Trace formula consists of 412 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-13 18:07:27,682 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 18:07:27,774 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2019-10-13 18:07:27,774 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 18:07:27,775 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 11 [2019-10-13 18:07:27,776 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999856086] [2019-10-13 18:07:27,776 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 18:07:27,777 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 18:07:27,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 18:07:27,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2019-10-13 18:07:27,777 INFO L87 Difference]: Start difference. First operand 10759 states and 12806 transitions. Second operand 5 states.