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_label17.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-14 22:05:30,939 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-14 22:05:30,942 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-14 22:05:30,961 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-14 22:05:30,961 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-14 22:05:30,963 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-14 22:05:30,964 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-14 22:05:30,977 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-14 22:05:30,980 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-14 22:05:30,981 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-14 22:05:30,984 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-14 22:05:30,985 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-14 22:05:30,986 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-14 22:05:30,989 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-14 22:05:30,992 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-14 22:05:30,993 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-14 22:05:30,995 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-14 22:05:30,998 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-14 22:05:31,000 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-14 22:05:31,005 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-14 22:05:31,010 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-14 22:05:31,010 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-14 22:05:31,012 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-14 22:05:31,013 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-14 22:05:31,016 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-14 22:05:31,021 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-14 22:05:31,021 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-14 22:05:31,022 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-14 22:05:31,023 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-14 22:05:31,024 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-14 22:05:31,024 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-14 22:05:31,025 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-14 22:05:31,025 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-14 22:05:31,025 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-14 22:05:31,026 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-14 22:05:31,027 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-14 22:05:31,027 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 [2019-10-14 22:05:31,041 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-14 22:05:31,042 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-14 22:05:31,043 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-14 22:05:31,043 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-14 22:05:31,043 INFO L138 SettingsManager]: * Use SBE=true [2019-10-14 22:05:31,044 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-14 22:05:31,044 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-14 22:05:31,044 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-14 22:05:31,044 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-14 22:05:31,044 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-14 22:05:31,045 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-14 22:05:31,045 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-14 22:05:31,045 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-14 22:05:31,045 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-14 22:05:31,045 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-14 22:05:31,046 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-14 22:05:31,046 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-14 22:05:31,046 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-14 22:05:31,046 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-14 22:05:31,046 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-14 22:05:31,047 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-14 22:05:31,047 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 22:05:31,047 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-14 22:05:31,047 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-14 22:05:31,047 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-14 22:05:31,048 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-14 22:05:31,048 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-14 22:05:31,048 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-14 22:05:31,048 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-14 22:05:31,362 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-14 22:05:31,382 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-14 22:05:31,386 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-14 22:05:31,387 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-14 22:05:31,387 INFO L275 PluginConnector]: CDTParser initialized [2019-10-14 22:05:31,388 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label17.c [2019-10-14 22:05:31,459 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9fc72f7c7/2ed2fdc1f058415c973b49e61bbbce29/FLAGa7b2e175d [2019-10-14 22:05:32,227 INFO L306 CDTParser]: Found 1 translation units. [2019-10-14 22:05:32,228 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label17.c [2019-10-14 22:05:32,251 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9fc72f7c7/2ed2fdc1f058415c973b49e61bbbce29/FLAGa7b2e175d [2019-10-14 22:05:32,296 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9fc72f7c7/2ed2fdc1f058415c973b49e61bbbce29 [2019-10-14 22:05:32,306 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-14 22:05:32,308 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-14 22:05:32,309 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-14 22:05:32,309 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-14 22:05:32,312 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-14 22:05:32,313 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:05:32" (1/1) ... [2019-10-14 22:05:32,316 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e5f6572 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:05:32, skipping insertion in model container [2019-10-14 22:05:32,316 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:05:32" (1/1) ... [2019-10-14 22:05:32,324 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-14 22:05:32,446 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-14 22:05:33,712 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 22:05:33,724 INFO L188 MainTranslator]: Completed pre-run [2019-10-14 22:05:34,176 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 22:05:34,206 INFO L192 MainTranslator]: Completed translation [2019-10-14 22:05:34,206 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:05:34 WrapperNode [2019-10-14 22:05:34,207 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-14 22:05:34,208 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-14 22:05:34,208 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-14 22:05:34,209 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-14 22:05:34,224 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:05:34" (1/1) ... [2019-10-14 22:05:34,224 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:05:34" (1/1) ... [2019-10-14 22:05:34,280 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:05:34" (1/1) ... [2019-10-14 22:05:34,282 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:05:34" (1/1) ... [2019-10-14 22:05:34,433 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:05:34" (1/1) ... [2019-10-14 22:05:34,473 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:05:34" (1/1) ... [2019-10-14 22:05:34,496 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:05:34" (1/1) ... [2019-10-14 22:05:34,515 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-14 22:05:34,515 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-14 22:05:34,516 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-14 22:05:34,516 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-14 22:05:34,517 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:05:34" (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 [2019-10-14 22:05:34,599 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-14 22:05:34,599 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-14 22:05:34,599 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-14 22:05:34,599 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-10-14 22:05:34,600 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2019-10-14 22:05:34,600 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-14 22:05:34,600 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-14 22:05:34,600 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-10-14 22:05:34,600 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2019-10-14 22:05:34,601 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-14 22:05:34,601 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-14 22:05:34,601 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-14 22:05:34,601 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-14 22:05:34,601 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-14 22:05:34,601 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-14 22:05:38,357 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-14 22:05:38,361 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-14 22:05:38,362 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:05:38 BoogieIcfgContainer [2019-10-14 22:05:38,362 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-14 22:05:38,366 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-14 22:05:38,367 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-14 22:05:38,370 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-14 22:05:38,370 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 10:05:32" (1/3) ... [2019-10-14 22:05:38,371 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51be6bc4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:05:38, skipping insertion in model container [2019-10-14 22:05:38,371 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:05:34" (2/3) ... [2019-10-14 22:05:38,373 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51be6bc4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:05:38, skipping insertion in model container [2019-10-14 22:05:38,373 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:05:38" (3/3) ... [2019-10-14 22:05:38,382 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem18_label17.c [2019-10-14 22:05:38,395 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-14 22:05:38,409 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-14 22:05:38,421 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-14 22:05:38,470 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-14 22:05:38,471 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-14 22:05:38,472 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-14 22:05:38,472 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-14 22:05:38,472 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-14 22:05:38,472 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-14 22:05:38,473 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-14 22:05:38,473 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-14 22:05:38,519 INFO L276 IsEmpty]: Start isEmpty. Operand 774 states. [2019-10-14 22:05:38,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2019-10-14 22:05:38,526 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 22:05:38,527 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] [2019-10-14 22:05:38,528 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 22:05:38,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 22:05:38,535 INFO L82 PathProgramCache]: Analyzing trace with hash 1487272786, now seen corresponding path program 1 times [2019-10-14 22:05:38,544 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 22:05:38,544 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761615730] [2019-10-14 22:05:38,545 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:05:38,545 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:05:38,545 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 22:05:38,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:05:38,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:05:38,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 22:05:38,929 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761615730] [2019-10-14 22:05:38,930 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 22:05:38,930 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-14 22:05:38,931 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128793000] [2019-10-14 22:05:38,936 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-14 22:05:38,937 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 22:05:38,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-14 22:05:38,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-10-14 22:05:38,956 INFO L87 Difference]: Start difference. First operand 774 states. Second operand 5 states. [2019-10-14 22:05:49,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 22:05:49,634 INFO L93 Difference]: Finished difference Result 3000 states and 5782 transitions. [2019-10-14 22:05:49,635 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-14 22:05:49,636 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 37 [2019-10-14 22:05:49,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 22:05:49,669 INFO L225 Difference]: With dead ends: 3000 [2019-10-14 22:05:49,669 INFO L226 Difference]: Without dead ends: 2142 [2019-10-14 22:05:49,682 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 [2019-10-14 22:05:49,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2142 states. [2019-10-14 22:05:49,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2142 to 2138. [2019-10-14 22:05:49,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2138 states. [2019-10-14 22:05:49,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2138 states to 2138 states and 3501 transitions. [2019-10-14 22:05:49,874 INFO L78 Accepts]: Start accepts. Automaton has 2138 states and 3501 transitions. Word has length 37 [2019-10-14 22:05:49,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 22:05:49,876 INFO L462 AbstractCegarLoop]: Abstraction has 2138 states and 3501 transitions. [2019-10-14 22:05:49,876 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-14 22:05:49,876 INFO L276 IsEmpty]: Start isEmpty. Operand 2138 states and 3501 transitions. [2019-10-14 22:05:49,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2019-10-14 22:05:49,889 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 22:05:49,889 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 22:05:49,889 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 22:05:49,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 22:05:49,890 INFO L82 PathProgramCache]: Analyzing trace with hash -270817417, now seen corresponding path program 1 times [2019-10-14 22:05:49,891 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 22:05:49,891 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102261685] [2019-10-14 22:05:49,891 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:05:49,891 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:05:49,892 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 22:05:49,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:05:50,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:05:50,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:05:50,291 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 22:05:50,293 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102261685] [2019-10-14 22:05:50,293 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 22:05:50,293 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-14 22:05:50,294 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770114259] [2019-10-14 22:05:50,299 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-14 22:05:50,300 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 22:05:50,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-14 22:05:50,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-10-14 22:05:50,301 INFO L87 Difference]: Start difference. First operand 2138 states and 3501 transitions. Second operand 8 states. [2019-10-14 22:06:01,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 22:06:01,200 INFO L93 Difference]: Finished difference Result 8664 states and 14432 transitions. [2019-10-14 22:06:01,201 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-10-14 22:06:01,202 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 106 [2019-10-14 22:06:01,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 22:06:01,243 INFO L225 Difference]: With dead ends: 8664 [2019-10-14 22:06:01,243 INFO L226 Difference]: Without dead ends: 6532 [2019-10-14 22:06:01,251 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2019-10-14 22:06:01,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6532 states. [2019-10-14 22:06:01,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6532 to 6511. [2019-10-14 22:06:01,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6511 states. [2019-10-14 22:06:01,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6511 states to 6511 states and 9250 transitions. [2019-10-14 22:06:01,456 INFO L78 Accepts]: Start accepts. Automaton has 6511 states and 9250 transitions. Word has length 106 [2019-10-14 22:06:01,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 22:06:01,457 INFO L462 AbstractCegarLoop]: Abstraction has 6511 states and 9250 transitions. [2019-10-14 22:06:01,458 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-14 22:06:01,458 INFO L276 IsEmpty]: Start isEmpty. Operand 6511 states and 9250 transitions. [2019-10-14 22:06:01,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2019-10-14 22:06:01,466 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 22:06:01,467 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-10-14 22:06:01,467 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 22:06:01,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 22:06:01,468 INFO L82 PathProgramCache]: Analyzing trace with hash 126242006, now seen corresponding path program 1 times [2019-10-14 22:06:01,468 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 22:06:01,468 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422224107] [2019-10-14 22:06:01,469 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:06:01,469 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:06:01,469 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 22:06:01,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:06:01,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:06:01,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:06:01,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:06:01,946 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 153 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-14 22:06:01,946 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422224107] [2019-10-14 22:06:01,946 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1382454691] [2019-10-14 22:06:01,947 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 [2019-10-14 22:06:02,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:06:02,069 INFO L256 TraceCheckSpWp]: Trace formula consists of 440 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-14 22:06:02,082 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 22:06:02,225 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 154 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 22:06:02,226 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-14 22:06:02,226 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5] total 11 [2019-10-14 22:06:02,226 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158422172] [2019-10-14 22:06:02,227 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-14 22:06:02,228 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 22:06:02,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-14 22:06:02,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2019-10-14 22:06:02,228 INFO L87 Difference]: Start difference. First operand 6511 states and 9250 transitions. Second operand 11 states.