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 --traceabstraction.trace.refinement.strategy SIFA_TAIPAN --sifa.abstract.domain CompoundDomain --rcfgbuilder.size.of.a.code.block LoopFreeBlock --sifa.call.summarizer TopInputCallSummarizer --sifa.fluid SizeLimitFluid --sifa.simplification.technique SIMPLIFY_QUICK -i ../../../trunk/examples/svcomp/eca-rers2012/Problem03_label16.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 01:43:29,470 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2019-10-15 01:43:29,519 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 01:43:29,520 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 01:43:29,523 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 01:43:29,524 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 01:43:29,526 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 01:43:29,526 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 01:43:29,528 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 01:43:29,532 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 01:43:29,537 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 01:43:29,539 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 01:43:29,542 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 01:43:29,543 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 01:43:29,545 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-15 01:43:29,555 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 01:43:29,555 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 01:43:29,557 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 01:43:29,558 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 [2019-10-15 01:43:29,592 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 01:43:29,592 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 01:43:29,597 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 01:43:29,597 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 01:43:29,597 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 01:43:29,598 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 01:43:29,598 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 01:43:29,598 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 01:43:29,598 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 01:43:29,598 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 01:43:29,599 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 01:43:29,599 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 01:43:29,599 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 01:43:29,602 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 01:43:29,602 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 01:43:29,602 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 01:43:29,603 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 01:43:29,603 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 01:43:29,603 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 01:43:29,603 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 01:43:29,603 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 01:43:29,604 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:43:29,604 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 01:43:29,604 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 01:43:29,605 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 01:43:29,605 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 01:43:29,605 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 01:43:29,605 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 01:43:29,605 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-10-15 01:43:29,890 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 01:43:29,903 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 01:43:29,907 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 01:43:29,909 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 01:43:29,910 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 01:43:29,910 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label16.c [2019-10-15 01:43:29,977 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a3d9b29e8/e5384b534d564b57b5573a2a8b45d611/FLAGbfbcfe530 [2019-10-15 01:43:30,622 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 01:43:30,623 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label16.c [2019-10-15 01:43:30,643 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a3d9b29e8/e5384b534d564b57b5573a2a8b45d611/FLAGbfbcfe530 [2019-10-15 01:43:30,765 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a3d9b29e8/e5384b534d564b57b5573a2a8b45d611 [2019-10-15 01:43:30,776 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 01:43:30,778 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 01:43:30,779 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 01:43:30,779 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 01:43:30,783 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 01:43:30,784 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:43:30" (1/1) ... [2019-10-15 01:43:30,787 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2db4663a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:43:30, skipping insertion in model container [2019-10-15 01:43:30,788 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:43:30" (1/1) ... [2019-10-15 01:43:30,796 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 01:43:30,871 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 01:43:31,692 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:43:31,700 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 01:43:32,118 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:43:32,145 INFO L192 MainTranslator]: Completed translation [2019-10-15 01:43:32,145 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:43:32 WrapperNode [2019-10-15 01:43:32,146 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 01:43:32,147 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 01:43:32,147 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 01:43:32,147 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 01:43:32,166 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:43:32" (1/1) ... [2019-10-15 01:43:32,167 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:43:32" (1/1) ... [2019-10-15 01:43:32,226 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:43:32" (1/1) ... [2019-10-15 01:43:32,226 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:43:32" (1/1) ... [2019-10-15 01:43:32,297 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:43:32" (1/1) ... [2019-10-15 01:43:32,313 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:43:32" (1/1) ... [2019-10-15 01:43:32,329 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:43:32" (1/1) ... [2019-10-15 01:43:32,352 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 01:43:32,352 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 01:43:32,353 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 01:43:32,353 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 01:43:32,354 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:43:32" (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 [2019-10-15 01:43:32,419 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 01:43:32,420 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 01:43:32,420 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-15 01:43:32,420 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 01:43:32,420 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-15 01:43:32,421 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 01:43:32,421 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 01:43:32,421 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-15 01:43:32,421 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 01:43:32,421 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 01:43:32,422 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 01:43:35,490 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 01:43:35,491 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-15 01:43:35,497 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:43:35 BoogieIcfgContainer [2019-10-15 01:43:35,497 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 01:43:35,499 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 01:43:35,499 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 01:43:35,505 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 01:43:35,506 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 01:43:30" (1/3) ... [2019-10-15 01:43:35,507 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ce589e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:43:35, skipping insertion in model container [2019-10-15 01:43:35,507 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:43:32" (2/3) ... [2019-10-15 01:43:35,508 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ce589e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:43:35, skipping insertion in model container [2019-10-15 01:43:35,508 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:43:35" (3/3) ... [2019-10-15 01:43:35,517 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem03_label16.c [2019-10-15 01:43:35,533 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 01:43:35,546 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 01:43:35,561 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 01:43:35,602 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 01:43:35,602 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 01:43:35,604 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 01:43:35,604 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 01:43:35,604 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 01:43:35,604 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 01:43:35,604 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 01:43:35,604 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 01:43:35,637 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states. [2019-10-15 01:43:35,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2019-10-15 01:43:35,661 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:43:35,663 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:43:35,665 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:43:35,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:43:35,672 INFO L82 PathProgramCache]: Analyzing trace with hash 136469286, now seen corresponding path program 1 times [2019-10-15 01:43:35,684 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 01:43:35,684 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22874157] [2019-10-15 01:43:35,685 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:43:35,686 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:43:35,686 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:43:36,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:43:36,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:43:36,491 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22874157] [2019-10-15 01:43:36,493 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:43:36,493 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:43:36,494 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063441106] [2019-10-15 01:43:36,500 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:43:36,500 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 01:43:36,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:43:36,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:43:36,523 INFO L87 Difference]: Start difference. First operand 158 states. Second operand 3 states. [2019-10-15 01:43:37,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:43:37,699 INFO L93 Difference]: Finished difference Result 462 states and 886 transitions. [2019-10-15 01:43:37,700 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:43:37,701 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 149 [2019-10-15 01:43:37,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:43:37,720 INFO L225 Difference]: With dead ends: 462 [2019-10-15 01:43:37,720 INFO L226 Difference]: Without dead ends: 301 [2019-10-15 01:43:37,725 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:43:37,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2019-10-15 01:43:37,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 301. [2019-10-15 01:43:37,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 301 states. [2019-10-15 01:43:37,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 529 transitions. [2019-10-15 01:43:37,807 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 529 transitions. Word has length 149 [2019-10-15 01:43:37,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:43:37,809 INFO L462 AbstractCegarLoop]: Abstraction has 301 states and 529 transitions. [2019-10-15 01:43:37,809 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:43:37,809 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 529 transitions. [2019-10-15 01:43:37,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2019-10-15 01:43:37,823 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:43:37,823 INFO L380 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:43:37,824 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:43:37,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:43:37,824 INFO L82 PathProgramCache]: Analyzing trace with hash -1532432622, now seen corresponding path program 1 times [2019-10-15 01:43:37,824 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 01:43:37,825 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305469223] [2019-10-15 01:43:37,825 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:43:37,825 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:43:37,825 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:43:37,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:43:38,138 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:43:38,139 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305469223] [2019-10-15 01:43:38,139 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:43:38,140 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:43:38,140 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698673439] [2019-10-15 01:43:38,142 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:43:38,142 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 01:43:38,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:43:38,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:43:38,143 INFO L87 Difference]: Start difference. First operand 301 states and 529 transitions. Second operand 3 states. [2019-10-15 01:43:39,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:43:39,159 INFO L93 Difference]: Finished difference Result 891 states and 1588 transitions. [2019-10-15 01:43:39,160 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:43:39,160 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 161 [2019-10-15 01:43:39,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:43:39,169 INFO L225 Difference]: With dead ends: 891 [2019-10-15 01:43:39,169 INFO L226 Difference]: Without dead ends: 595 [2019-10-15 01:43:39,172 INFO L600 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 [2019-10-15 01:43:39,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 595 states. [2019-10-15 01:43:39,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 595 to 595. [2019-10-15 01:43:39,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 595 states. [2019-10-15 01:43:39,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 595 states to 595 states and 1019 transitions. [2019-10-15 01:43:39,215 INFO L78 Accepts]: Start accepts. Automaton has 595 states and 1019 transitions. Word has length 161 [2019-10-15 01:43:39,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:43:39,216 INFO L462 AbstractCegarLoop]: Abstraction has 595 states and 1019 transitions. [2019-10-15 01:43:39,216 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:43:39,216 INFO L276 IsEmpty]: Start isEmpty. Operand 595 states and 1019 transitions. [2019-10-15 01:43:39,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2019-10-15 01:43:39,229 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:43:39,229 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:43:39,230 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:43:39,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:43:39,230 INFO L82 PathProgramCache]: Analyzing trace with hash -924627422, now seen corresponding path program 1 times [2019-10-15 01:43:39,230 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 01:43:39,231 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498140304] [2019-10-15 01:43:39,231 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:43:39,231 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:43:39,231 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:43:39,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:43:39,400 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 24 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:43:39,401 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498140304] [2019-10-15 01:43:39,401 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1662679726] [2019-10-15 01:43:39,402 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 [2019-10-15 01:43:39,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:43:39,705 INFO L256 TraceCheckSpWp]: Trace formula consists of 1015 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-15 01:43:39,719 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:43:39,818 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 24 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:43:39,819 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:43:39,949 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 24 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:43:39,950 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [482223733] [2019-10-15 01:43:40,021 INFO L162 IcfgInterpreter]: Started Sifa with 153 locations of interest [2019-10-15 01:43:40,022 INFO L169 IcfgInterpreter]: Building call graph [2019-10-15 01:43:40,030 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-15 01:43:40,041 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-15 01:43:40,042 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-15 01:43:41,164 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 208 for LOIs [2019-10-15 01:43:41,494 WARN L191 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 298 [2019-10-15 01:43:41,777 WARN L191 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 304 [2019-10-15 01:43:42,052 WARN L191 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2019-10-15 01:43:42,997 WARN L191 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 318 DAG size of output: 318 [2019-10-15 01:43:44,545 WARN L191 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 274 DAG size of output: 274 [2019-10-15 01:43:44,860 WARN L191 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 279 DAG size of output: 279 [2019-10-15 01:43:45,139 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 278 DAG size of output: 274 [2019-10-15 01:43:45,516 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 360 [2019-10-15 01:43:45,619 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 360 [2019-10-15 01:43:45,880 WARN L191 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 364 DAG size of output: 362 [2019-10-15 01:43:46,017 WARN L191 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 363 [2019-10-15 01:43:46,142 WARN L191 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 363 [2019-10-15 01:43:46,335 WARN L191 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 367 DAG size of output: 365 [2019-10-15 01:43:46,445 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 302 [2019-10-15 01:43:47,085 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 276 DAG size of output: 276 [2019-10-15 01:43:47,698 WARN L191 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 369 DAG size of output: 362 [2019-10-15 01:43:47,828 WARN L191 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 360 [2019-10-15 01:43:48,029 WARN L191 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 361 DAG size of output: 361 [2019-10-15 01:43:48,147 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 370 DAG size of output: 365 [2019-10-15 01:43:48,251 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 363 [2019-10-15 01:43:48,389 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 364 DAG size of output: 364 [2019-10-15 01:43:49,118 WARN L191 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 271 DAG size of output: 271 [2019-10-15 01:43:49,510 WARN L191 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 363 DAG size of output: 361 [2019-10-15 01:43:49,636 WARN L191 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 360 [2019-10-15 01:43:49,783 WARN L191 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 361 DAG size of output: 361 [2019-10-15 01:43:50,185 WARN L191 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 372 DAG size of output: 367 [2019-10-15 01:43:51,230 WARN L191 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 368 [2019-10-15 01:43:51,617 WARN L191 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 279 DAG size of output: 279 [2019-10-15 01:43:52,042 INFO L199 IcfgInterpreter]: Interpreting procedure calculate_output with input of size 168 for LOIs [2019-10-15 01:43:56,153 WARN L191 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 110