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_label28.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 18:06:52,803 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 18:06:52,806 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 18:06:52,826 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 18:06:52,826 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 18:06:52,828 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 18:06:52,830 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 18:06:52,840 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 18:06:52,844 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 18:06:52,847 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 18:06:52,848 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 18:06:52,850 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 18:06:52,851 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 18:06:52,852 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 18:06:52,855 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 18:06:52,856 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 18:06:52,858 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 18:06:52,858 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 18:06:52,860 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 18:06:52,865 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 18:06:52,869 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 18:06:52,872 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 18:06:52,874 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 18:06:52,875 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 18:06:52,877 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-13 18:06:52,882 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 18:06:52,882 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 18:06:52,883 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 18:06:52,884 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 18:06:52,885 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 18:06:52,886 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 18:06:52,886 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 18:06:52,886 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 18:06:52,887 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 18:06:52,887 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 18:06:52,889 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 18:06:52,889 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 18:06:52,925 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 18:06:52,925 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 18:06:52,926 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 18:06:52,927 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 18:06:52,927 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 18:06:52,929 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 18:06:52,929 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 18:06:52,930 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 18:06:52,930 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 18:06:52,930 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 18:06:52,930 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 18:06:52,930 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 18:06:52,930 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 18:06:52,931 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 18:06:52,931 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 18:06:52,931 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 18:06:52,932 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 18:06:52,932 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 18:06:52,933 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 18:06:52,933 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 18:06:52,933 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 18:06:52,933 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 18:06:52,933 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 18:06:52,934 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 18:06:52,934 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 18:06:52,934 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 18:06:52,934 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 18:06:52,934 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 18:06:52,935 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-13 18:06:53,205 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 18:06:53,225 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 18:06:53,229 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 18:06:53,230 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 18:06:53,231 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 18:06:53,231 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label28.c [2019-10-13 18:06:53,306 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/da40e986c/4e0a9d557dd84031924e9508bb4d0680/FLAG6f056f45c [2019-10-13 18:06:54,036 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 18:06:54,037 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label28.c [2019-10-13 18:06:54,059 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/da40e986c/4e0a9d557dd84031924e9508bb4d0680/FLAG6f056f45c [2019-10-13 18:06:54,119 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/da40e986c/4e0a9d557dd84031924e9508bb4d0680 [2019-10-13 18:06:54,131 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 18:06:54,134 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 18:06:54,138 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 18:06:54,138 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 18:06:54,142 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 18:06:54,144 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:06:54" (1/1) ... [2019-10-13 18:06:54,147 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a118b1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:06:54, skipping insertion in model container [2019-10-13 18:06:54,148 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:06:54" (1/1) ... [2019-10-13 18:06:54,157 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 18:06:54,287 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 18:06:55,395 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 18:06:55,400 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 18:06:55,856 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 18:06:55,886 INFO L192 MainTranslator]: Completed translation [2019-10-13 18:06:55,888 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:06:55 WrapperNode [2019-10-13 18:06:55,888 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 18:06:55,889 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 18:06:55,889 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 18:06:55,889 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 18:06:55,905 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 18:06:55,906 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 18:06:55,956 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 18:06:55,957 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 18:06:56,058 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 18:06:56,097 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 18:06:56,128 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 18:06:56,220 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 18:06:56,220 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 18:06:56,221 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 18:06:56,221 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 18:06:56,222 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 18:06:56,302 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 18:06:56,302 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 18:06:56,303 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-13 18:06:56,303 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-10-13 18:06:56,303 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2019-10-13 18:06:56,304 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 18:06:56,304 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-13 18:06:56,304 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-10-13 18:06:56,304 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2019-10-13 18:06:56,305 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 18:06:56,305 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 18:06:56,305 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-13 18:06:56,306 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 18:06:56,307 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 18:06:56,308 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 18:07:00,268 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 18:07:00,269 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-13 18:07:00,273 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:07:00 BoogieIcfgContainer [2019-10-13 18:07:00,273 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 18:07:00,274 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 18:07:00,275 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 18:07:00,277 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 18:07:00,278 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 06:06:54" (1/3) ... [2019-10-13 18:07:00,279 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b1f061b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:07:00, skipping insertion in model container [2019-10-13 18:07:00,279 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 18:07:00,279 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b1f061b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:07:00, skipping insertion in model container [2019-10-13 18:07:00,279 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:07:00" (3/3) ... [2019-10-13 18:07:00,284 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem18_label28.c [2019-10-13 18:07:00,296 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 18:07:00,306 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 18:07:00,318 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 18:07:00,362 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 18:07:00,362 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 18:07:00,362 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 18:07:00,362 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 18:07:00,362 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 18:07:00,362 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 18:07:00,363 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 18:07:00,363 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 18:07:00,407 INFO L276 IsEmpty]: Start isEmpty. Operand 774 states. [2019-10-13 18:07:00,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2019-10-13 18:07:00,421 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 18:07:00,422 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, 1, 1] [2019-10-13 18:07:00,424 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 18:07:00,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 18:07:00,430 INFO L82 PathProgramCache]: Analyzing trace with hash -614102951, now seen corresponding path program 1 times [2019-10-13 18:07:00,439 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 18:07:00,440 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29708670] [2019-10-13 18:07:00,440 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:07:00,440 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:07:00,441 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 18:07:00,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:07:00,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:07:00,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 18:07:00,953 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29708670] [2019-10-13 18:07:00,954 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 18:07:00,955 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 18:07:00,955 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756308568] [2019-10-13 18:07:00,960 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 18:07:00,961 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 18:07:00,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 18:07:00,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-10-13 18:07:00,979 INFO L87 Difference]: Start difference. First operand 774 states. Second operand 5 states. [2019-10-13 18:07:11,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 18:07:11,107 INFO L93 Difference]: Finished difference Result 3000 states and 5781 transitions. [2019-10-13 18:07:11,134 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 18:07:11,136 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 70 [2019-10-13 18:07:11,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 18:07:11,170 INFO L225 Difference]: With dead ends: 3000 [2019-10-13 18:07:11,170 INFO L226 Difference]: Without dead ends: 2142 [2019-10-13 18:07:11,180 INFO L600 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 [2019-10-13 18:07:11,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2142 states. [2019-10-13 18:07:11,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2142 to 1428. [2019-10-13 18:07:11,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1428 states. [2019-10-13 18:07:11,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1428 states to 1428 states and 2262 transitions. [2019-10-13 18:07:11,355 INFO L78 Accepts]: Start accepts. Automaton has 1428 states and 2262 transitions. Word has length 70 [2019-10-13 18:07:11,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 18:07:11,356 INFO L462 AbstractCegarLoop]: Abstraction has 1428 states and 2262 transitions. [2019-10-13 18:07:11,356 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 18:07:11,356 INFO L276 IsEmpty]: Start isEmpty. Operand 1428 states and 2262 transitions. [2019-10-13 18:07:11,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2019-10-13 18:07:11,363 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 18:07:11,363 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, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 18:07:11,363 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 18:07:11,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 18:07:11,364 INFO L82 PathProgramCache]: Analyzing trace with hash 1169931765, now seen corresponding path program 1 times [2019-10-13 18:07:11,364 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 18:07:11,364 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890889426] [2019-10-13 18:07:11,365 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:07:11,365 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:07:11,365 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 18:07:11,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:07:11,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:07:11,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:07:11,655 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 18:07:11,655 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890889426] [2019-10-13 18:07:11,656 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 18:07:11,656 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 18:07:11,656 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732052640] [2019-10-13 18:07:11,660 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-13 18:07:11,661 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 18:07:11,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-13 18:07:11,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-10-13 18:07:11,662 INFO L87 Difference]: Start difference. First operand 1428 states and 2262 transitions. Second operand 8 states. [2019-10-13 18:07:22,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 18:07:22,627 INFO L93 Difference]: Finished difference Result 5784 states and 9265 transitions. [2019-10-13 18:07:22,627 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-10-13 18:07:22,627 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 139 [2019-10-13 18:07:22,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 18:07:22,650 INFO L225 Difference]: With dead ends: 5784 [2019-10-13 18:07:22,650 INFO L226 Difference]: Without dead ends: 4362 [2019-10-13 18:07:22,654 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2019-10-13 18:07:22,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4362 states. [2019-10-13 18:07:22,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4362 to 4345. [2019-10-13 18:07:22,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4345 states. [2019-10-13 18:07:22,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4345 states to 4345 states and 5982 transitions. [2019-10-13 18:07:22,795 INFO L78 Accepts]: Start accepts. Automaton has 4345 states and 5982 transitions. Word has length 139 [2019-10-13 18:07:22,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 18:07:22,795 INFO L462 AbstractCegarLoop]: Abstraction has 4345 states and 5982 transitions. [2019-10-13 18:07:22,795 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-13 18:07:22,796 INFO L276 IsEmpty]: Start isEmpty. Operand 4345 states and 5982 transitions. [2019-10-13 18:07:22,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2019-10-13 18:07:22,802 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 18:07:22,802 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, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 18:07:22,803 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 18:07:22,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 18:07:22,803 INFO L82 PathProgramCache]: Analyzing trace with hash -1735359110, now seen corresponding path program 1 times [2019-10-13 18:07:22,803 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 18:07:22,804 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155245516] [2019-10-13 18:07:22,804 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:07:22,804 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:07:22,804 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 18:07:22,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:07:22,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:07:23,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:07:23,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:07:23,284 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 196 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-13 18:07:23,285 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155245516] [2019-10-13 18:07:23,285 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1223230795] [2019-10-13 18:07:23,287 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 18:07:23,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:07:23,394 INFO L256 TraceCheckSpWp]: Trace formula consists of 452 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-13 18:07:23,407 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 18:07:23,560 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 197 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 18:07:23,560 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-13 18:07:23,561 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5] total 11 [2019-10-13 18:07:23,561 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430145510] [2019-10-13 18:07:23,562 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-13 18:07:23,563 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 18:07:23,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-13 18:07:23,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2019-10-13 18:07:23,563 INFO L87 Difference]: Start difference. First operand 4345 states and 5982 transitions. Second operand 11 states.