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/Problem12_label12.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 01:50:42,165 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 01:50:42,167 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 01:50:42,180 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 01:50:42,180 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 01:50:42,181 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 01:50:42,182 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 01:50:42,184 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 01:50:42,186 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 01:50:42,187 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 01:50:42,187 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 01:50:42,189 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 01:50:42,189 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 01:50:42,190 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 01:50:42,191 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 01:50:42,192 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 01:50:42,193 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 01:50:42,194 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 01:50:42,196 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 01:50:42,198 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 01:50:42,203 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 01:50:42,204 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 01:50:42,205 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 01:50:42,206 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 01:50:42,210 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-15 01:50:42,218 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 01:50:42,219 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 01:50:42,220 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 01:50:42,220 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 01:50:42,234 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 01:50:42,235 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 01:50:42,236 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 01:50:42,236 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 01:50:42,236 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 01:50:42,237 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 01:50:42,237 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 01:50:42,237 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 01:50:42,237 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 01:50:42,237 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 01:50:42,238 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 01:50:42,238 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 01:50:42,238 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 01:50:42,238 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 01:50:42,238 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 01:50:42,239 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 01:50:42,239 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 01:50:42,239 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 01:50:42,239 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 01:50:42,239 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 01:50:42,240 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 01:50:42,240 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:50:42,240 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 01:50:42,240 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 01:50:42,241 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 01:50:42,241 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 01:50:42,241 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 01:50:42,241 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 01:50:42,242 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 01:50:42,507 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 01:50:42,520 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 01:50:42,523 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 01:50:42,525 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 01:50:42,525 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 01:50:42,526 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label12.c [2019-10-15 01:50:42,586 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dc7fcec0f/8d5ba8be046149338de68a1ab6dc2de6/FLAGaf6bf34e1 [2019-10-15 01:50:43,345 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 01:50:43,346 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label12.c [2019-10-15 01:50:43,380 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dc7fcec0f/8d5ba8be046149338de68a1ab6dc2de6/FLAGaf6bf34e1 [2019-10-15 01:50:43,427 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dc7fcec0f/8d5ba8be046149338de68a1ab6dc2de6 [2019-10-15 01:50:43,438 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 01:50:43,440 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 01:50:43,443 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 01:50:43,443 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 01:50:43,447 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 01:50:43,448 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:50:43" (1/1) ... [2019-10-15 01:50:43,452 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@92df964 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:50:43, skipping insertion in model container [2019-10-15 01:50:43,452 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:50:43" (1/1) ... [2019-10-15 01:50:43,462 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 01:50:43,606 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 01:50:45,149 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:50:45,160 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 01:50:45,961 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:50:46,000 INFO L192 MainTranslator]: Completed translation [2019-10-15 01:50:46,001 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:50:46 WrapperNode [2019-10-15 01:50:46,001 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 01:50:46,002 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 01:50:46,003 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 01:50:46,003 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 01:50:46,024 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:50:46" (1/1) ... [2019-10-15 01:50:46,024 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:50:46" (1/1) ... [2019-10-15 01:50:46,099 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:50:46" (1/1) ... [2019-10-15 01:50:46,102 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:50:46" (1/1) ... [2019-10-15 01:50:46,215 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:50:46" (1/1) ... [2019-10-15 01:50:46,251 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:50:46" (1/1) ... [2019-10-15 01:50:46,286 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:50:46" (1/1) ... [2019-10-15 01:50:46,320 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 01:50:46,320 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 01:50:46,321 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 01:50:46,321 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 01:50:46,322 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:50:46" (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 01:50:46,373 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 01:50:46,373 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 01:50:46,374 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-15 01:50:46,374 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-10-15 01:50:46,374 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2019-10-15 01:50:46,374 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2019-10-15 01:50:46,374 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 01:50:46,375 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-15 01:50:46,375 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-10-15 01:50:46,375 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2019-10-15 01:50:46,375 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2019-10-15 01:50:46,375 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 01:50:46,375 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 01:50:46,376 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-15 01:50:46,376 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 01:50:46,376 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 01:50:46,376 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 01:50:52,815 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 01:50:52,816 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-15 01:50:52,818 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:50:52 BoogieIcfgContainer [2019-10-15 01:50:52,818 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 01:50:52,819 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 01:50:52,820 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 01:50:52,823 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 01:50:52,823 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 01:50:43" (1/3) ... [2019-10-15 01:50:52,824 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13faec76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:50:52, skipping insertion in model container [2019-10-15 01:50:52,824 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:50:46" (2/3) ... [2019-10-15 01:50:52,824 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13faec76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:50:52, skipping insertion in model container [2019-10-15 01:50:52,824 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:50:52" (3/3) ... [2019-10-15 01:50:52,826 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem12_label12.c [2019-10-15 01:50:52,836 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 01:50:52,845 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 01:50:52,856 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 01:50:52,889 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 01:50:52,890 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 01:50:52,890 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 01:50:52,890 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 01:50:52,890 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 01:50:52,890 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 01:50:52,890 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 01:50:52,891 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 01:50:52,925 INFO L276 IsEmpty]: Start isEmpty. Operand 694 states. [2019-10-15 01:50:52,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-10-15 01:50:52,932 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:50:52,933 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:50:52,935 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:50:52,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:50:52,941 INFO L82 PathProgramCache]: Analyzing trace with hash -874905266, now seen corresponding path program 1 times [2019-10-15 01:50:52,951 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 01:50:52,951 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790051891] [2019-10-15 01:50:52,951 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:50:52,952 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:50:52,952 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:50:53,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:50:53,356 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 01:50:53,357 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790051891] [2019-10-15 01:50:53,358 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:50:53,359 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:50:53,359 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144599233] [2019-10-15 01:50:53,364 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:50:53,364 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 01:50:53,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:50:53,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:50:53,382 INFO L87 Difference]: Start difference. First operand 694 states. Second operand 3 states. [2019-10-15 01:50:58,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:50:58,315 INFO L93 Difference]: Finished difference Result 2068 states and 4065 transitions. [2019-10-15 01:50:58,318 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:50:58,319 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2019-10-15 01:50:58,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:50:58,408 INFO L225 Difference]: With dead ends: 2068 [2019-10-15 01:50:58,408 INFO L226 Difference]: Without dead ends: 1371 [2019-10-15 01:50:58,421 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 01:50:58,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1371 states. [2019-10-15 01:50:58,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1371 to 1368. [2019-10-15 01:50:58,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1368 states. [2019-10-15 01:50:58,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1368 states to 1368 states and 2530 transitions. [2019-10-15 01:50:58,561 INFO L78 Accepts]: Start accepts. Automaton has 1368 states and 2530 transitions. Word has length 11 [2019-10-15 01:50:58,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:50:58,562 INFO L462 AbstractCegarLoop]: Abstraction has 1368 states and 2530 transitions. [2019-10-15 01:50:58,562 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:50:58,562 INFO L276 IsEmpty]: Start isEmpty. Operand 1368 states and 2530 transitions. [2019-10-15 01:50:58,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-10-15 01:50:58,564 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:50:58,565 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:50:58,565 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:50:58,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:50:58,565 INFO L82 PathProgramCache]: Analyzing trace with hash 1660861057, now seen corresponding path program 1 times [2019-10-15 01:50:58,566 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 01:50:58,566 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913683908] [2019-10-15 01:50:58,566 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:50:58,566 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:50:58,566 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:50:58,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:50:58,690 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:50:58,691 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913683908] [2019-10-15 01:50:58,691 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:50:58,691 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-15 01:50:58,691 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708158934] [2019-10-15 01:50:58,696 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 01:50:58,696 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 01:50:58,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 01:50:58,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 01:50:58,698 INFO L87 Difference]: Start difference. First operand 1368 states and 2530 transitions. Second operand 5 states. [2019-10-15 01:51:04,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:51:04,838 INFO L93 Difference]: Finished difference Result 4145 states and 7711 transitions. [2019-10-15 01:51:04,839 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 01:51:04,839 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2019-10-15 01:51:04,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:51:04,857 INFO L225 Difference]: With dead ends: 4145 [2019-10-15 01:51:04,857 INFO L226 Difference]: Without dead ends: 2782 [2019-10-15 01:51:04,861 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-10-15 01:51:04,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2782 states. [2019-10-15 01:51:04,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2782 to 2758. [2019-10-15 01:51:04,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2758 states. [2019-10-15 01:51:04,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2758 states to 2758 states and 4886 transitions. [2019-10-15 01:51:04,946 INFO L78 Accepts]: Start accepts. Automaton has 2758 states and 4886 transitions. Word has length 25 [2019-10-15 01:51:04,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:51:04,947 INFO L462 AbstractCegarLoop]: Abstraction has 2758 states and 4886 transitions. [2019-10-15 01:51:04,947 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 01:51:04,947 INFO L276 IsEmpty]: Start isEmpty. Operand 2758 states and 4886 transitions. [2019-10-15 01:51:04,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-10-15 01:51:04,948 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:51:04,948 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-15 01:51:04,949 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:51:04,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:51:04,949 INFO L82 PathProgramCache]: Analyzing trace with hash 1517908598, now seen corresponding path program 1 times [2019-10-15 01:51:04,949 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 01:51:04,949 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573866520] [2019-10-15 01:51:04,950 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:51:04,950 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:51:04,950 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:51:04,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:51:05,034 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:51:05,034 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573866520] [2019-10-15 01:51:05,034 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:51:05,034 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-15 01:51:05,035 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673372405] [2019-10-15 01:51:05,036 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 01:51:05,036 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 01:51:05,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 01:51:05,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-15 01:51:05,036 INFO L87 Difference]: Start difference. First operand 2758 states and 4886 transitions. Second operand 6 states. [2019-10-15 01:51:11,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:51:11,693 INFO L93 Difference]: Finished difference Result 8359 states and 15059 transitions. [2019-10-15 01:51:11,694 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 01:51:11,694 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 30 [2019-10-15 01:51:11,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:51:11,741 INFO L225 Difference]: With dead ends: 8359 [2019-10-15 01:51:11,741 INFO L226 Difference]: Without dead ends: 5606 [2019-10-15 01:51:11,751 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 01:51:11,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5606 states. [2019-10-15 01:51:12,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5606 to 5517. [2019-10-15 01:51:12,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5517 states. [2019-10-15 01:51:12,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5517 states to 5517 states and 9733 transitions. [2019-10-15 01:51:12,032 INFO L78 Accepts]: Start accepts. Automaton has 5517 states and 9733 transitions. Word has length 30 [2019-10-15 01:51:12,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:51:12,033 INFO L462 AbstractCegarLoop]: Abstraction has 5517 states and 9733 transitions. [2019-10-15 01:51:12,033 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 01:51:12,033 INFO L276 IsEmpty]: Start isEmpty. Operand 5517 states and 9733 transitions. [2019-10-15 01:51:12,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-10-15 01:51:12,035 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:51:12,036 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:51:12,036 INFO L410 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:51:12,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:51:12,037 INFO L82 PathProgramCache]: Analyzing trace with hash -1337883674, now seen corresponding path program 1 times [2019-10-15 01:51:12,037 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 01:51:12,038 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970176653] [2019-10-15 01:51:12,038 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:51:12,039 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:51:12,039 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:51:12,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:51:12,174 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:51:12,174 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970176653] [2019-10-15 01:51:12,174 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:51:12,175 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-15 01:51:12,175 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704201428] [2019-10-15 01:51:12,175 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 01:51:12,176 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 01:51:12,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 01:51:12,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-15 01:51:12,176 INFO L87 Difference]: Start difference. First operand 5517 states and 9733 transitions. Second operand 6 states. [2019-10-15 01:51:18,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:51:18,250 INFO L93 Difference]: Finished difference Result 14605 states and 26408 transitions. [2019-10-15 01:51:18,251 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 01:51:18,251 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 38 [2019-10-15 01:51:18,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:51:18,306 INFO L225 Difference]: With dead ends: 14605 [2019-10-15 01:51:18,307 INFO L226 Difference]: Without dead ends: 9093 [2019-10-15 01:51:18,324 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 01:51:18,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9093 states. [2019-10-15 01:51:18,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9093 to 8976. [2019-10-15 01:51:18,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8976 states. [2019-10-15 01:51:18,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8976 states to 8976 states and 15455 transitions. [2019-10-15 01:51:18,564 INFO L78 Accepts]: Start accepts. Automaton has 8976 states and 15455 transitions. Word has length 38 [2019-10-15 01:51:18,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:51:18,564 INFO L462 AbstractCegarLoop]: Abstraction has 8976 states and 15455 transitions. [2019-10-15 01:51:18,565 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 01:51:18,565 INFO L276 IsEmpty]: Start isEmpty. Operand 8976 states and 15455 transitions. [2019-10-15 01:51:18,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2019-10-15 01:51:18,579 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:51:18,579 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2019-10-15 01:51:18,579 INFO L410 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:51:18,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:51:18,580 INFO L82 PathProgramCache]: Analyzing trace with hash -1219037785, now seen corresponding path program 1 times [2019-10-15 01:51:18,580 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 01:51:18,581 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184703042] [2019-10-15 01:51:18,581 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:51:18,581 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:51:18,581 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:51:18,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:51:18,756 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-15 01:51:18,757 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184703042] [2019-10-15 01:51:18,757 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1486951918] [2019-10-15 01:51:18,757 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