/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_label45.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-06 22:49:02,430 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-06 22:49:02,432 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-06 22:49:02,446 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-06 22:49:02,447 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-06 22:49:02,449 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-06 22:49:02,451 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-06 22:49:02,460 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-06 22:49:02,464 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-06 22:49:02,466 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-06 22:49:02,468 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-06 22:49:02,469 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-06 22:49:02,469 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-06 22:49:02,471 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-06 22:49:02,472 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-06 22:49:02,473 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-06 22:49:02,475 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-06 22:49:02,478 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-06 22:49:02,479 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-06 22:49:02,486 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-06 22:49:02,488 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-06 22:49:02,489 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-06 22:49:02,495 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-06 22:49:02,495 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-06 22:49:02,500 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-06 22:49:02,514 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-06 22:49:02,517 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-06 22:49:02,518 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-06 22:49:02,519 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 22:49:02,557 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-06 22:49:02,557 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-06 22:49:02,558 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-06 22:49:02,559 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-06 22:49:02,559 INFO L138 SettingsManager]: * Use SBE=true [2019-11-06 22:49:02,559 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-06 22:49:02,559 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-06 22:49:02,559 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-06 22:49:02,560 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-06 22:49:02,560 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-06 22:49:02,560 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-06 22:49:02,560 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-06 22:49:02,560 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-06 22:49:02,564 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-06 22:49:02,564 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-06 22:49:02,565 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-06 22:49:02,565 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-06 22:49:02,565 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-06 22:49:02,565 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-06 22:49:02,565 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-06 22:49:02,566 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-06 22:49:02,566 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 22:49:02,566 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-06 22:49:02,566 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-06 22:49:02,566 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-06 22:49:02,567 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-06 22:49:02,567 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-06 22:49:02,567 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-06 22:49:02,567 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 22:49:02,863 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-06 22:49:02,884 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-06 22:49:02,888 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-06 22:49:02,890 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-06 22:49:02,890 INFO L275 PluginConnector]: CDTParser initialized [2019-11-06 22:49:02,891 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label45.c [2019-11-06 22:49:02,971 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ae21e461/b46c1cdb8dce4ed886af54f43ca7b318/FLAG7da8dad56 [2019-11-06 22:49:03,777 INFO L306 CDTParser]: Found 1 translation units. [2019-11-06 22:49:03,777 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label45.c [2019-11-06 22:49:03,811 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ae21e461/b46c1cdb8dce4ed886af54f43ca7b318/FLAG7da8dad56 [2019-11-06 22:49:04,320 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ae21e461/b46c1cdb8dce4ed886af54f43ca7b318 [2019-11-06 22:49:04,331 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-06 22:49:04,332 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-06 22:49:04,333 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-06 22:49:04,334 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-06 22:49:04,337 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-06 22:49:04,338 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:49:04" (1/1) ... [2019-11-06 22:49:04,341 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c304c45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:49:04, skipping insertion in model container [2019-11-06 22:49:04,342 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:49:04" (1/1) ... [2019-11-06 22:49:04,349 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-06 22:49:04,504 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-06 22:49:06,081 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 22:49:06,094 INFO L188 MainTranslator]: Completed pre-run [2019-11-06 22:49:06,772 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 22:49:06,801 INFO L192 MainTranslator]: Completed translation [2019-11-06 22:49:06,801 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:49:06 WrapperNode [2019-11-06 22:49:06,802 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-06 22:49:06,803 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-06 22:49:06,803 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-06 22:49:06,803 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-06 22:49:06,818 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:49:06" (1/1) ... [2019-11-06 22:49:06,818 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:49:06" (1/1) ... [2019-11-06 22:49:06,872 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:49:06" (1/1) ... [2019-11-06 22:49:06,873 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:49:06" (1/1) ... [2019-11-06 22:49:06,965 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:49:06" (1/1) ... [2019-11-06 22:49:06,992 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:49:06" (1/1) ... [2019-11-06 22:49:07,012 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:49:06" (1/1) ... [2019-11-06 22:49:07,050 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-06 22:49:07,050 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-06 22:49:07,051 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-06 22:49:07,051 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-06 22:49:07,052 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:49:06" (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 22:49:07,119 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-06 22:49:07,119 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-06 22:49:07,119 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-11-06 22:49:07,119 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-11-06 22:49:07,120 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2019-11-06 22:49:07,120 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2019-11-06 22:49:07,120 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-06 22:49:07,121 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-11-06 22:49:07,122 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-11-06 22:49:07,123 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2019-11-06 22:49:07,123 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2019-11-06 22:49:07,123 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-06 22:49:07,123 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-06 22:49:07,124 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-06 22:49:07,125 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-06 22:49:07,125 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-06 22:49:07,126 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-06 22:49:11,963 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-06 22:49:11,963 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-11-06 22:49:11,965 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:49:11 BoogieIcfgContainer [2019-11-06 22:49:11,965 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-06 22:49:11,966 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-06 22:49:11,966 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-06 22:49:11,970 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-06 22:49:11,970 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:49:04" (1/3) ... [2019-11-06 22:49:11,971 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a01d1f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:49:11, skipping insertion in model container [2019-11-06 22:49:11,971 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:49:06" (2/3) ... [2019-11-06 22:49:11,971 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a01d1f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:49:11, skipping insertion in model container [2019-11-06 22:49:11,971 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:49:11" (3/3) ... [2019-11-06 22:49:11,973 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem12_label45.c [2019-11-06 22:49:11,983 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-06 22:49:11,992 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-06 22:49:12,004 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-06 22:49:12,037 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-06 22:49:12,037 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-06 22:49:12,037 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-06 22:49:12,037 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-06 22:49:12,037 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-06 22:49:12,038 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-06 22:49:12,038 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-06 22:49:12,038 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-06 22:49:12,071 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states. [2019-11-06 22:49:12,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2019-11-06 22:49:12,080 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:49:12,081 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] [2019-11-06 22:49:12,083 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:49:12,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:49:12,090 INFO L82 PathProgramCache]: Analyzing trace with hash -157974758, now seen corresponding path program 1 times [2019-11-06 22:49:12,101 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:49:12,101 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568381729] [2019-11-06 22:49:12,101 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:49:12,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:49:12,523 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 22:49:12,524 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568381729] [2019-11-06 22:49:12,525 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:49:12,525 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-06 22:49:12,527 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88870211] [2019-11-06 22:49:12,533 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-06 22:49:12,534 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:49:12,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-06 22:49:12,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-06 22:49:12,553 INFO L87 Difference]: Start difference. First operand 839 states. Second operand 3 states. [2019-11-06 22:49:17,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:49:17,356 INFO L93 Difference]: Finished difference Result 2443 states and 4697 transitions. [2019-11-06 22:49:17,359 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-06 22:49:17,361 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 57 [2019-11-06 22:49:17,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:49:17,391 INFO L225 Difference]: With dead ends: 2443 [2019-11-06 22:49:17,392 INFO L226 Difference]: Without dead ends: 1542 [2019-11-06 22:49:17,405 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 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 22:49:17,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1542 states. [2019-11-06 22:49:17,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1542 to 1542. [2019-11-06 22:49:17,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1542 states. [2019-11-06 22:49:17,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1542 states to 1542 states and 2702 transitions. [2019-11-06 22:49:17,551 INFO L78 Accepts]: Start accepts. Automaton has 1542 states and 2702 transitions. Word has length 57 [2019-11-06 22:49:17,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:49:17,553 INFO L462 AbstractCegarLoop]: Abstraction has 1542 states and 2702 transitions. [2019-11-06 22:49:17,553 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-06 22:49:17,553 INFO L276 IsEmpty]: Start isEmpty. Operand 1542 states and 2702 transitions. [2019-11-06 22:49:17,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2019-11-06 22:49:17,568 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:49:17,569 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:49:17,569 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:49:17,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:49:17,570 INFO L82 PathProgramCache]: Analyzing trace with hash 1774223795, now seen corresponding path program 1 times [2019-11-06 22:49:17,570 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:49:17,570 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379291452] [2019-11-06 22:49:17,571 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:49:17,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:49:17,841 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:49:17,842 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379291452] [2019-11-06 22:49:17,843 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:49:17,843 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-06 22:49:17,843 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594871531] [2019-11-06 22:49:17,845 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 22:49:17,846 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:49:17,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 22:49:17,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-06 22:49:17,847 INFO L87 Difference]: Start difference. First operand 1542 states and 2702 transitions. Second operand 4 states. [2019-11-06 22:49:25,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:49:25,469 INFO L93 Difference]: Finished difference Result 6146 states and 10908 transitions. [2019-11-06 22:49:25,470 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-06 22:49:25,470 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 132 [2019-11-06 22:49:25,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:49:25,497 INFO L225 Difference]: With dead ends: 6146 [2019-11-06 22:49:25,498 INFO L226 Difference]: Without dead ends: 4610 [2019-11-06 22:49:25,503 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-06 22:49:25,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4610 states. [2019-11-06 22:49:25,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4610 to 4610. [2019-11-06 22:49:25,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4610 states. [2019-11-06 22:49:25,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4610 states to 4610 states and 7717 transitions. [2019-11-06 22:49:25,640 INFO L78 Accepts]: Start accepts. Automaton has 4610 states and 7717 transitions. Word has length 132 [2019-11-06 22:49:25,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:49:25,641 INFO L462 AbstractCegarLoop]: Abstraction has 4610 states and 7717 transitions. [2019-11-06 22:49:25,641 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 22:49:25,641 INFO L276 IsEmpty]: Start isEmpty. Operand 4610 states and 7717 transitions. [2019-11-06 22:49:25,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2019-11-06 22:49:25,645 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:49:25,646 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:49:25,646 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:49:25,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:49:25,647 INFO L82 PathProgramCache]: Analyzing trace with hash 773603615, now seen corresponding path program 1 times [2019-11-06 22:49:25,647 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:49:25,647 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838894481] [2019-11-06 22:49:25,647 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:49:25,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:49:25,885 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:49:25,885 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838894481] [2019-11-06 22:49:25,886 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:49:25,886 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-06 22:49:25,888 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262383416] [2019-11-06 22:49:25,890 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-06 22:49:25,890 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:49:25,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-06 22:49:25,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-11-06 22:49:25,891 INFO L87 Difference]: Start difference. First operand 4610 states and 7717 transitions. Second operand 6 states. [2019-11-06 22:49:32,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:49:32,345 INFO L93 Difference]: Finished difference Result 14035 states and 24146 transitions. [2019-11-06 22:49:32,346 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-06 22:49:32,346 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 170 [2019-11-06 22:49:32,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:49:32,398 INFO L225 Difference]: With dead ends: 14035 [2019-11-06 22:49:32,399 INFO L226 Difference]: Without dead ends: 9431 [2019-11-06 22:49:32,410 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 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 22:49:32,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9431 states. [2019-11-06 22:49:32,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9431 to 9352. [2019-11-06 22:49:32,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9352 states. [2019-11-06 22:49:32,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9352 states to 9352 states and 15344 transitions. [2019-11-06 22:49:32,695 INFO L78 Accepts]: Start accepts. Automaton has 9352 states and 15344 transitions. Word has length 170 [2019-11-06 22:49:32,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:49:32,696 INFO L462 AbstractCegarLoop]: Abstraction has 9352 states and 15344 transitions. [2019-11-06 22:49:32,696 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-06 22:49:32,697 INFO L276 IsEmpty]: Start isEmpty. Operand 9352 states and 15344 transitions. [2019-11-06 22:49:32,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2019-11-06 22:49:32,701 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:49:32,702 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:49:32,702 INFO L410 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:49:32,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:49:32,703 INFO L82 PathProgramCache]: Analyzing trace with hash 398846734, now seen corresponding path program 1 times [2019-11-06 22:49:32,703 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:49:32,703 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765262444] [2019-11-06 22:49:32,703 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:49:32,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:49:32,970 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:49:32,970 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765262444] [2019-11-06 22:49:32,970 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:49:32,970 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-06 22:49:32,971 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047870045] [2019-11-06 22:49:32,971 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-06 22:49:32,972 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:49:32,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-06 22:49:32,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-06 22:49:32,972 INFO L87 Difference]: Start difference. First operand 9352 states and 15344 transitions. Second operand 6 states.