/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --abstractinterpretationv2.abstract.domain IntervalDomain --traceabstraction.trace.refinement.strategy TAIPAN --traceabstraction.abstract.interpretation.mode USE_PREDICATES -i ../../../trunk/examples/svcomp/eca-rers2012/Problem12_label12.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-06 22:48:19,510 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-06 22:48:19,513 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-06 22:48:19,525 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-06 22:48:19,525 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-06 22:48:19,526 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-06 22:48:19,528 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-06 22:48:19,530 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-06 22:48:19,531 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-06 22:48:19,532 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-06 22:48:19,534 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-06 22:48:19,535 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-06 22:48:19,535 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-06 22:48:19,536 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-06 22:48:19,537 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-06 22:48:19,538 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-06 22:48:19,539 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-06 22:48:19,540 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-06 22:48:19,542 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-06 22:48:19,545 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-06 22:48:19,546 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-06 22:48:19,548 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-06 22:48:19,549 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-06 22:48:19,550 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-06 22:48:19,552 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-06 22:48:19,553 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-06 22:48:19,553 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-06 22:48:19,554 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-06 22:48:19,554 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-06 22:48:19,555 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-06 22:48:19,556 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-06 22:48:19,556 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-06 22:48:19,557 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-06 22:48:19,558 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-06 22:48:19,559 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-06 22:48:19,560 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-06 22:48:19,560 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-06 22:48:19,561 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-06 22:48:19,561 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-06 22:48:19,562 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-06 22:48:19,563 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-06 22:48:19,563 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-06 22:48:19,578 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-06 22:48:19,579 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-06 22:48:19,580 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-06 22:48:19,580 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-06 22:48:19,580 INFO L138 SettingsManager]: * Use SBE=true [2019-11-06 22:48:19,581 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-06 22:48:19,581 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-06 22:48:19,581 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-06 22:48:19,581 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-06 22:48:19,581 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-06 22:48:19,582 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-06 22:48:19,582 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-06 22:48:19,582 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-06 22:48:19,582 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-06 22:48:19,582 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-06 22:48:19,582 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-06 22:48:19,583 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-06 22:48:19,584 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-06 22:48:19,584 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-06 22:48:19,584 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-06 22:48:19,584 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-06 22:48:19,584 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 22:48:19,585 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-06 22:48:19,585 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-06 22:48:19,585 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-06 22:48:19,585 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-06 22:48:19,585 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-06 22:48:19,585 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-06 22:48:19,586 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-11-06 22:48:19,875 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-06 22:48:19,887 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-06 22:48:19,891 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-06 22:48:19,892 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-06 22:48:19,892 INFO L275 PluginConnector]: CDTParser initialized [2019-11-06 22:48:19,893 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label12.c [2019-11-06 22:48:19,968 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/15d01a694/4585361bb6f646db931367558adb88a1/FLAG69e9e384d [2019-11-06 22:48:20,817 INFO L306 CDTParser]: Found 1 translation units. [2019-11-06 22:48:20,817 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label12.c [2019-11-06 22:48:20,847 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/15d01a694/4585361bb6f646db931367558adb88a1/FLAG69e9e384d [2019-11-06 22:48:21,323 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/15d01a694/4585361bb6f646db931367558adb88a1 [2019-11-06 22:48:21,347 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-06 22:48:21,351 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-06 22:48:21,358 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-06 22:48:21,359 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-06 22:48:21,366 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-06 22:48:21,367 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:48:21" (1/1) ... [2019-11-06 22:48:21,375 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25f9a9b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:48:21, skipping insertion in model container [2019-11-06 22:48:21,378 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:48:21" (1/1) ... [2019-11-06 22:48:21,396 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-06 22:48:21,578 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-06 22:48:23,048 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 22:48:23,055 INFO L188 MainTranslator]: Completed pre-run [2019-11-06 22:48:23,625 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 22:48:23,650 INFO L192 MainTranslator]: Completed translation [2019-11-06 22:48:23,650 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:48:23 WrapperNode [2019-11-06 22:48:23,651 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-06 22:48:23,651 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-06 22:48:23,651 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-06 22:48:23,652 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-06 22:48:23,665 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:48:23" (1/1) ... [2019-11-06 22:48:23,665 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:48:23" (1/1) ... [2019-11-06 22:48:23,720 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:48:23" (1/1) ... [2019-11-06 22:48:23,720 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:48:23" (1/1) ... [2019-11-06 22:48:23,825 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:48:23" (1/1) ... [2019-11-06 22:48:23,853 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:48:23" (1/1) ... [2019-11-06 22:48:23,874 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:48:23" (1/1) ... [2019-11-06 22:48:23,913 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-06 22:48:23,913 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-06 22:48:23,914 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-06 22:48:23,914 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-06 22:48:23,915 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:48:23" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 22:48:23,997 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-06 22:48:23,997 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-06 22:48:23,998 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-11-06 22:48:23,998 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-11-06 22:48:23,998 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2019-11-06 22:48:23,998 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2019-11-06 22:48:23,998 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-06 22:48:23,999 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-11-06 22:48:23,999 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-11-06 22:48:23,999 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2019-11-06 22:48:23,999 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2019-11-06 22:48:23,999 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-06 22:48:24,000 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-06 22:48:24,000 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-06 22:48:24,000 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-06 22:48:24,000 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-06 22:48:24,000 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-06 22:48:28,794 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-06 22:48:28,794 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-11-06 22:48:28,797 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:48:28 BoogieIcfgContainer [2019-11-06 22:48:28,797 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-06 22:48:28,798 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-06 22:48:28,798 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-06 22:48:28,801 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-06 22:48:28,802 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:48:21" (1/3) ... [2019-11-06 22:48:28,803 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b2141b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:48:28, skipping insertion in model container [2019-11-06 22:48:28,803 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:48:23" (2/3) ... [2019-11-06 22:48:28,803 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b2141b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:48:28, skipping insertion in model container [2019-11-06 22:48:28,804 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:48:28" (3/3) ... [2019-11-06 22:48:28,805 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem12_label12.c [2019-11-06 22:48:28,816 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-06 22:48:28,826 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-06 22:48:28,922 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-06 22:48:28,955 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-06 22:48:28,955 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-06 22:48:28,956 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-06 22:48:28,956 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-06 22:48:28,956 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-06 22:48:28,956 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-06 22:48:28,956 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-06 22:48:28,956 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-06 22:48:28,993 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states. [2019-11-06 22:48:29,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2019-11-06 22:48:29,003 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:48:29,004 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:48:29,006 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:48:29,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:48:29,013 INFO L82 PathProgramCache]: Analyzing trace with hash -1107355747, now seen corresponding path program 1 times [2019-11-06 22:48:29,023 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:48:29,023 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431083193] [2019-11-06 22:48:29,024 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:48:29,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:48:29,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:48:29,344 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431083193] [2019-11-06 22:48:29,345 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:48:29,345 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-06 22:48:29,348 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736672415] [2019-11-06 22:48:29,354 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-06 22:48:29,356 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:48:29,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-06 22:48:29,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-06 22:48:29,374 INFO L87 Difference]: Start difference. First operand 839 states. Second operand 3 states. [2019-11-06 22:48:34,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:48:34,544 INFO L93 Difference]: Finished difference Result 2443 states and 4697 transitions. [2019-11-06 22:48:34,550 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-06 22:48:34,552 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 64 [2019-11-06 22:48:34,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:48:34,586 INFO L225 Difference]: With dead ends: 2443 [2019-11-06 22:48:34,587 INFO L226 Difference]: Without dead ends: 1542 [2019-11-06 22:48:34,596 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-06 22:48:34,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1542 states. [2019-11-06 22:48:34,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1542 to 1542. [2019-11-06 22:48:34,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1542 states. [2019-11-06 22:48:34,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1542 states to 1542 states and 2750 transitions. [2019-11-06 22:48:34,741 INFO L78 Accepts]: Start accepts. Automaton has 1542 states and 2750 transitions. Word has length 64 [2019-11-06 22:48:34,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:48:34,742 INFO L462 AbstractCegarLoop]: Abstraction has 1542 states and 2750 transitions. [2019-11-06 22:48:34,743 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-06 22:48:34,743 INFO L276 IsEmpty]: Start isEmpty. Operand 1542 states and 2750 transitions. [2019-11-06 22:48:34,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2019-11-06 22:48:34,755 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:48:34,755 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-11-06 22:48:34,756 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:48:34,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:48:34,756 INFO L82 PathProgramCache]: Analyzing trace with hash -493202935, now seen corresponding path program 1 times [2019-11-06 22:48:34,757 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:48:34,757 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990864199] [2019-11-06 22:48:34,757 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:48:34,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:48:35,037 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:48:35,038 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990864199] [2019-11-06 22:48:35,039 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:48:35,039 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-06 22:48:35,039 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170969492] [2019-11-06 22:48:35,041 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-06 22:48:35,041 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:48:35,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-06 22:48:35,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-06 22:48:35,042 INFO L87 Difference]: Start difference. First operand 1542 states and 2750 transitions. Second operand 5 states. [2019-11-06 22:48:42,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:48:42,160 INFO L93 Difference]: Finished difference Result 4690 states and 8403 transitions. [2019-11-06 22:48:42,160 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-06 22:48:42,161 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 137 [2019-11-06 22:48:42,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:48:42,182 INFO L225 Difference]: With dead ends: 4690 [2019-11-06 22:48:42,183 INFO L226 Difference]: Without dead ends: 3154 [2019-11-06 22:48:42,192 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-11-06 22:48:42,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3154 states. [2019-11-06 22:48:42,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3154 to 3122. [2019-11-06 22:48:42,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3122 states. [2019-11-06 22:48:42,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3122 states to 3122 states and 5336 transitions. [2019-11-06 22:48:42,303 INFO L78 Accepts]: Start accepts. Automaton has 3122 states and 5336 transitions. Word has length 137 [2019-11-06 22:48:42,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:48:42,306 INFO L462 AbstractCegarLoop]: Abstraction has 3122 states and 5336 transitions. [2019-11-06 22:48:42,306 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-06 22:48:42,306 INFO L276 IsEmpty]: Start isEmpty. Operand 3122 states and 5336 transitions. [2019-11-06 22:48:42,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2019-11-06 22:48:42,315 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:48:42,315 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-11-06 22:48:42,316 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:48:42,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:48:42,317 INFO L82 PathProgramCache]: Analyzing trace with hash -1291094684, now seen corresponding path program 1 times [2019-11-06 22:48:42,317 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:48:42,317 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592459604] [2019-11-06 22:48:42,318 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:48:42,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:48:42,581 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:48:42,581 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592459604] [2019-11-06 22:48:42,581 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:48:42,583 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-06 22:48:42,583 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393025460] [2019-11-06 22:48:42,584 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-06 22:48:42,584 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:48:42,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-06 22:48:42,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-11-06 22:48:42,585 INFO L87 Difference]: Start difference. First operand 3122 states and 5336 transitions. Second operand 6 states. [2019-11-06 22:48:49,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:48:49,962 INFO L93 Difference]: Finished difference Result 9491 states and 16483 transitions. [2019-11-06 22:48:49,964 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-06 22:48:49,964 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 142 [2019-11-06 22:48:49,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:48:50,008 INFO L225 Difference]: With dead ends: 9491 [2019-11-06 22:48:50,009 INFO L226 Difference]: Without dead ends: 6375 [2019-11-06 22:48:50,018 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-11-06 22:48:50,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6375 states. [2019-11-06 22:48:50,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6375 to 6333. [2019-11-06 22:48:50,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6333 states. [2019-11-06 22:48:50,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6333 states to 6333 states and 10771 transitions. [2019-11-06 22:48:50,259 INFO L78 Accepts]: Start accepts. Automaton has 6333 states and 10771 transitions. Word has length 142 [2019-11-06 22:48:50,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:48:50,261 INFO L462 AbstractCegarLoop]: Abstraction has 6333 states and 10771 transitions. [2019-11-06 22:48:50,261 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-06 22:48:50,261 INFO L276 IsEmpty]: Start isEmpty. Operand 6333 states and 10771 transitions. [2019-11-06 22:48:50,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2019-11-06 22:48:50,265 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:48:50,266 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-11-06 22:48:50,266 INFO L410 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:48:50,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:48:50,268 INFO L82 PathProgramCache]: Analyzing trace with hash 1777138644, now seen corresponding path program 1 times [2019-11-06 22:48:50,268 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:48:50,269 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316138490] [2019-11-06 22:48:50,269 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:48:50,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:48:50,507 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:48:50,508 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316138490] [2019-11-06 22:48:50,508 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:48:50,508 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-06 22:48:50,509 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103743306] [2019-11-06 22:48:50,509 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-06 22:48:50,509 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:48:50,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-06 22:48:50,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-11-06 22:48:50,510 INFO L87 Difference]: Start difference. First operand 6333 states and 10771 transitions. Second operand 6 states. [2019-11-06 22:48:56,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:48:56,739 INFO L93 Difference]: Finished difference Result 15980 states and 27530 transitions. [2019-11-06 22:48:56,739 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-06 22:48:56,739 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 150 [2019-11-06 22:48:56,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:48:56,785 INFO L225 Difference]: With dead ends: 15980 [2019-11-06 22:48:56,786 INFO L226 Difference]: Without dead ends: 9653 [2019-11-06 22:48:56,803 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-11-06 22:48:56,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9653 states.