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_label58.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 01:44:11,604 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2019-10-15 01:44:11,646 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 01:44:11,650 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 01:44:11,653 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 01:44:11,655 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 01:44:11,657 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 01:44:11,659 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 01:44:11,661 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 01:44:11,668 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 01:44:11,672 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 01:44:11,675 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 01:44:11,676 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 01:44:11,679 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 01:44:11,682 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-15 01:44:11,694 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 01:44:11,695 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 01:44:11,696 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 01:44:11,697 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 01:44:11,716 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 01:44:11,716 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 01:44:11,718 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 01:44:11,719 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 01:44:11,719 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 01:44:11,719 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 01:44:11,719 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 01:44:11,719 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 01:44:11,720 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 01:44:11,720 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 01:44:11,721 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 01:44:11,721 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 01:44:11,721 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 01:44:11,722 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 01:44:11,722 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 01:44:11,722 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 01:44:11,722 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 01:44:11,723 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 01:44:11,723 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 01:44:11,723 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 01:44:11,723 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 01:44:11,723 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:44:11,724 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 01:44:11,724 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 01:44:11,724 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 01:44:11,724 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 01:44:11,724 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 01:44:11,725 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 01:44:11,725 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 01:44:12,012 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 01:44:12,026 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 01:44:12,029 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 01:44:12,031 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 01:44:12,031 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 01:44:12,032 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label58.c [2019-10-15 01:44:12,104 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a238c4787/40db43aaa6534cbbacb2343da0005ef3/FLAGe9820d072 [2019-10-15 01:44:12,831 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 01:44:12,834 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label58.c [2019-10-15 01:44:12,855 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a238c4787/40db43aaa6534cbbacb2343da0005ef3/FLAGe9820d072 [2019-10-15 01:44:12,975 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a238c4787/40db43aaa6534cbbacb2343da0005ef3 [2019-10-15 01:44:12,986 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 01:44:12,988 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 01:44:12,989 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 01:44:12,989 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 01:44:12,993 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 01:44:12,994 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:44:12" (1/1) ... [2019-10-15 01:44:12,997 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@eb7c29b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:44:12, skipping insertion in model container [2019-10-15 01:44:12,998 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:44:12" (1/1) ... [2019-10-15 01:44:13,005 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 01:44:13,091 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 01:44:13,917 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:44:13,937 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 01:44:14,228 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:44:14,255 INFO L192 MainTranslator]: Completed translation [2019-10-15 01:44:14,256 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:44:14 WrapperNode [2019-10-15 01:44:14,257 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 01:44:14,258 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 01:44:14,258 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 01:44:14,258 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 01:44:14,275 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:44:14" (1/1) ... [2019-10-15 01:44:14,276 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:44:14" (1/1) ... [2019-10-15 01:44:14,320 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:44:14" (1/1) ... [2019-10-15 01:44:14,321 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:44:14" (1/1) ... [2019-10-15 01:44:14,380 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:44:14" (1/1) ... [2019-10-15 01:44:14,395 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:44:14" (1/1) ... [2019-10-15 01:44:14,405 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:44:14" (1/1) ... [2019-10-15 01:44:14,423 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 01:44:14,435 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 01:44:14,436 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 01:44:14,436 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 01:44:14,439 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:44:14" (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 01:44:14,511 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 01:44:14,511 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 01:44:14,511 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-15 01:44:14,511 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 01:44:14,512 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-15 01:44:14,512 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 01:44:14,512 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 01:44:14,512 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-15 01:44:14,513 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 01:44:14,513 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 01:44:14,513 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 01:44:17,544 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 01:44:17,545 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-15 01:44:17,546 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:44:17 BoogieIcfgContainer [2019-10-15 01:44:17,546 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 01:44:17,548 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 01:44:17,548 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 01:44:17,551 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 01:44:17,551 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 01:44:12" (1/3) ... [2019-10-15 01:44:17,553 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2686eeee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:44:17, skipping insertion in model container [2019-10-15 01:44:17,553 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:44:14" (2/3) ... [2019-10-15 01:44:17,553 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2686eeee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:44:17, skipping insertion in model container [2019-10-15 01:44:17,553 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:44:17" (3/3) ... [2019-10-15 01:44:17,558 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem03_label58.c [2019-10-15 01:44:17,572 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 01:44:17,583 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 01:44:17,595 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 01:44:17,630 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 01:44:17,630 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 01:44:17,630 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 01:44:17,630 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 01:44:17,630 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 01:44:17,630 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 01:44:17,631 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 01:44:17,631 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 01:44:17,663 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states. [2019-10-15 01:44:17,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2019-10-15 01:44:17,686 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:44:17,687 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 01:44:17,689 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:44:17,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:44:17,697 INFO L82 PathProgramCache]: Analyzing trace with hash 136468006, now seen corresponding path program 1 times [2019-10-15 01:44:17,706 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 01:44:17,706 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120002182] [2019-10-15 01:44:17,707 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:44:17,707 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:44:17,707 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:44:18,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:44:18,485 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 01:44:18,486 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120002182] [2019-10-15 01:44:18,487 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:44:18,487 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 01:44:18,488 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361374871] [2019-10-15 01:44:18,495 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 01:44:18,495 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 01:44:18,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 01:44:18,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-15 01:44:18,513 INFO L87 Difference]: Start difference. First operand 158 states. Second operand 4 states. [2019-10-15 01:44:20,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:44:20,164 INFO L93 Difference]: Finished difference Result 613 states and 1182 transitions. [2019-10-15 01:44:20,170 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-15 01:44:20,172 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 149 [2019-10-15 01:44:20,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:44:20,197 INFO L225 Difference]: With dead ends: 613 [2019-10-15 01:44:20,197 INFO L226 Difference]: Without dead ends: 448 [2019-10-15 01:44:20,203 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-15 01:44:20,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2019-10-15 01:44:20,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 301. [2019-10-15 01:44:20,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 301 states. [2019-10-15 01:44:20,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 579 transitions. [2019-10-15 01:44:20,314 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 579 transitions. Word has length 149 [2019-10-15 01:44:20,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:44:20,315 INFO L462 AbstractCegarLoop]: Abstraction has 301 states and 579 transitions. [2019-10-15 01:44:20,315 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 01:44:20,316 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 579 transitions. [2019-10-15 01:44:20,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2019-10-15 01:44:20,320 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:44:20,321 INFO L380 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:44:20,321 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:44:20,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:44:20,322 INFO L82 PathProgramCache]: Analyzing trace with hash -660050486, now seen corresponding path program 1 times [2019-10-15 01:44:20,322 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 01:44:20,322 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862315921] [2019-10-15 01:44:20,322 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:44:20,322 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:44:20,323 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:44:20,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:44:20,541 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:44:20,541 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862315921] [2019-10-15 01:44:20,542 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:44:20,542 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 01:44:20,542 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807051585] [2019-10-15 01:44:20,544 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 01:44:20,544 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 01:44:20,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 01:44:20,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2019-10-15 01:44:20,545 INFO L87 Difference]: Start difference. First operand 301 states and 579 transitions. Second operand 7 states. [2019-10-15 01:44:22,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:44:22,088 INFO L93 Difference]: Finished difference Result 945 states and 1905 transitions. [2019-10-15 01:44:22,088 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-15 01:44:22,089 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 165 [2019-10-15 01:44:22,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:44:22,097 INFO L225 Difference]: With dead ends: 945 [2019-10-15 01:44:22,098 INFO L226 Difference]: Without dead ends: 649 [2019-10-15 01:44:22,104 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2019-10-15 01:44:22,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 649 states. [2019-10-15 01:44:22,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 649 to 603. [2019-10-15 01:44:22,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2019-10-15 01:44:22,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 1154 transitions. [2019-10-15 01:44:22,181 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 1154 transitions. Word has length 165 [2019-10-15 01:44:22,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:44:22,182 INFO L462 AbstractCegarLoop]: Abstraction has 603 states and 1154 transitions. [2019-10-15 01:44:22,182 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 01:44:22,182 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 1154 transitions. [2019-10-15 01:44:22,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2019-10-15 01:44:22,188 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:44:22,188 INFO L380 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:44:22,189 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:44:22,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:44:22,189 INFO L82 PathProgramCache]: Analyzing trace with hash 1566262061, now seen corresponding path program 1 times [2019-10-15 01:44:22,190 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 01:44:22,190 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453632775] [2019-10-15 01:44:22,190 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:44:22,190 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:44:22,191 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:44:22,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:44:22,375 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:44:22,376 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453632775] [2019-10-15 01:44:22,377 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:44:22,377 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-15 01:44:22,377 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227444437] [2019-10-15 01:44:22,379 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 01:44:22,379 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 01:44:22,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 01:44:22,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-15 01:44:22,381 INFO L87 Difference]: Start difference. First operand 603 states and 1154 transitions. Second operand 6 states. [2019-10-15 01:44:23,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:44:23,695 INFO L93 Difference]: Finished difference Result 1859 states and 3754 transitions. [2019-10-15 01:44:23,695 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-15 01:44:23,695 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 166 [2019-10-15 01:44:23,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:44:23,706 INFO L225 Difference]: With dead ends: 1859 [2019-10-15 01:44:23,706 INFO L226 Difference]: Without dead ends: 1261 [2019-10-15 01:44:23,708 INFO L600 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 [2019-10-15 01:44:23,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1261 states. [2019-10-15 01:44:23,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1261 to 1213. [2019-10-15 01:44:23,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1213 states. [2019-10-15 01:44:23,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1213 states to 1213 states and 2319 transitions. [2019-10-15 01:44:23,767 INFO L78 Accepts]: Start accepts. Automaton has 1213 states and 2319 transitions. Word has length 166 [2019-10-15 01:44:23,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:44:23,768 INFO L462 AbstractCegarLoop]: Abstraction has 1213 states and 2319 transitions. [2019-10-15 01:44:23,768 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 01:44:23,768 INFO L276 IsEmpty]: Start isEmpty. Operand 1213 states and 2319 transitions. [2019-10-15 01:44:23,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2019-10-15 01:44:23,776 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:44:23,776 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:44:23,777 INFO L410 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:44:23,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:44:23,777 INFO L82 PathProgramCache]: Analyzing trace with hash 1427323489, now seen corresponding path program 1 times [2019-10-15 01:44:23,777 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 01:44:23,778 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448465451] [2019-10-15 01:44:23,778 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:44:23,778 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:44:23,778 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:44:23,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:44:23,959 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 19 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-15 01:44:23,959 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448465451] [2019-10-15 01:44:23,960 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1283778036] [2019-10-15 01:44:23,960 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 01:44:24,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:44:24,193 INFO L256 TraceCheckSpWp]: Trace formula consists of 1017 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-15 01:44:24,219 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:44:24,356 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-15 01:44:24,357 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:44:24,545 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 19 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-15 01:44:24,546 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:44:24,546 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 10 [2019-10-15 01:44:24,546 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99595800] [2019-10-15 01:44:24,549 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 01:44:24,549 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 01:44:24,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 01:44:24,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2019-10-15 01:44:24,551 INFO L87 Difference]: Start difference. First operand 1213 states and 2319 transitions. Second operand 5 states. [2019-10-15 01:44:25,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:44:25,217 INFO L93 Difference]: Finished difference Result 3697 states and 7337 transitions. [2019-10-15 01:44:25,218 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-15 01:44:25,218 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 174 [2019-10-15 01:44:25,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:44:25,239 INFO L225 Difference]: With dead ends: 3697 [2019-10-15 01:44:25,239 INFO L226 Difference]: Without dead ends: 2489 [2019-10-15 01:44:25,243 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 356 GetRequests, 342 SyntacticMatches, 4 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2019-10-15 01:44:25,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2489 states. [2019-10-15 01:44:25,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2489 to 2451. [2019-10-15 01:44:25,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2451 states. [2019-10-15 01:44:25,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2451 states to 2451 states and 4764 transitions. [2019-10-15 01:44:25,354 INFO L78 Accepts]: Start accepts. Automaton has 2451 states and 4764 transitions. Word has length 174 [2019-10-15 01:44:25,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:44:25,354 INFO L462 AbstractCegarLoop]: Abstraction has 2451 states and 4764 transitions. [2019-10-15 01:44:25,355 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 01:44:25,355 INFO L276 IsEmpty]: Start isEmpty. Operand 2451 states and 4764 transitions. [2019-10-15 01:44:25,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2019-10-15 01:44:25,363 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:44:25,364 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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] [2019-10-15 01:44:25,568 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:44:25,569 INFO L410 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:44:25,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:44:25,569 INFO L82 PathProgramCache]: Analyzing trace with hash -1874744906, now seen corresponding path program 1 times [2019-10-15 01:44:25,569 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 01:44:25,570 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599550595] [2019-10-15 01:44:25,570 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:44:25,570 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:44:25,570 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:44:25,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:44:25,770 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 32 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:44:25,770 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599550595] [2019-10-15 01:44:25,771 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2007788646] [2019-10-15 01:44:25,771 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:44:25,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:44:25,953 INFO L256 TraceCheckSpWp]: Trace formula consists of 1020 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-15 01:44:25,960 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:44:26,028 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 18 proven. 12 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-15 01:44:26,028 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:44:26,135 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 28 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-15 01:44:26,136 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [538997292] [2019-10-15 01:44:26,199 INFO L162 IcfgInterpreter]: Started Sifa with 153 locations of interest [2019-10-15 01:44:26,199 INFO L169 IcfgInterpreter]: Building call graph [2019-10-15 01:44:26,206 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-15 01:44:26,214 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-15 01:44:26,215 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-15 01:44:26,989 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 206 for LOIs [2019-10-15 01:44:27,272 WARN L191 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 298 [2019-10-15 01:44:27,601 WARN L191 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 304 [2019-10-15 01:44:27,946 WARN L191 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2019-10-15 01:44:29,309 WARN L191 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 309 DAG size of output: 309 [2019-10-15 01:44:29,652 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 230 DAG size of output: 226 [2019-10-15 01:44:31,304 WARN L191 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 268 DAG size of output: 268 [2019-10-15 01:44:31,757 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 227 [2019-10-15 01:44:31,891 WARN L191 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 227 [2019-10-15 01:44:32,037 WARN L191 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 228 DAG size of output: 228 [2019-10-15 01:44:32,981 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 228 DAG size of output: 223 [2019-10-15 01:44:33,094 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 368 [2019-10-15 01:44:33,401 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 372 DAG size of output: 368 [2019-10-15 01:44:33,534 WARN L191 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 369 [2019-10-15 01:44:33,695 WARN L191 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 369 [2019-10-15 01:44:33,861 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 373 DAG size of output: 371 [2019-10-15 01:44:34,531 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 268 DAG size of output: 268 [2019-10-15 01:44:34,780 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 264 DAG size of output: 264 [2019-10-15 01:44:35,192 WARN L191 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 227 [2019-10-15 01:44:35,302 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 227 [2019-10-15 01:44:36,409 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 369 DAG size of output: 368 [2019-10-15 01:44:36,511 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 368 [2019-10-15 01:44:36,644 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 369 DAG size of output: 369 [2019-10-15 01:44:36,865 WARN L191 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 369 [2019-10-15 01:44:37,024 WARN L191 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 370 DAG size of output: 370 [2019-10-15 01:44:37,732 WARN L191 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 266 DAG size of output: 266 [2019-10-15 01:44:37,968 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 227 [2019-10-15 01:44:38,080 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 227 [2019-10-15 01:44:39,108 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 371 DAG size of output: 369 [2019-10-15 01:44:39,235 WARN L191 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 368 [2019-10-15 01:44:39,379 WARN L191 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 369 DAG size of output: 369 [2019-10-15 01:44:39,764 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 378 DAG size of output: 373 [2019-10-15 01:44:40,289 WARN L191 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 268 DAG size of output: 268 [2019-10-15 01:44:40,506 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 266 DAG size of output: 266 [2019-10-15 01:44:41,303 WARN L191 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 268 DAG size of output: 268 [2019-10-15 01:44:42,006 WARN L191 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 371 DAG size of output: 369 [2019-10-15 01:44:42,113 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 368 [2019-10-15 01:44:42,256 WARN L191 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 369 DAG size of output: 369 [2019-10-15 01:44:42,592 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 268 DAG size of output: 268 [2019-10-15 01:44:42,820 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 266 DAG size of output: 266 [2019-10-15 01:44:43,646 WARN L191 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 268 DAG size of output: 268 [2019-10-15 01:44:44,206 INFO L199 IcfgInterpreter]: Interpreting procedure calculate_output with input of size 172 for LOIs [2019-10-15 01:44:44,814 WARN L191 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 125 [2019-10-15 01:44:45,360 WARN L191 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 201 DAG size of output: 140 [2019-10-15 01:44:45,543 WARN L191 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2019-10-15 01:44:46,079 WARN L191 SmtUtils]: Spent 483.00 ms on a formula simplification. DAG size of input: 201 DAG size of output: 140 [2019-10-15 01:44:46,286 WARN L191 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2019-10-15 01:44:46,475 WARN L191 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 171