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/nla-digbench/bresenham.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 03:04:23,654 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 03:04:23,656 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 03:04:23,668 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 03:04:23,669 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 03:04:23,670 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 03:04:23,671 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 03:04:23,673 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 03:04:23,676 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 03:04:23,676 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 03:04:23,677 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 03:04:23,679 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 03:04:23,679 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 03:04:23,680 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 03:04:23,681 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 03:04:23,682 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 03:04:23,683 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 03:04:23,684 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 03:04:23,686 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 03:04:23,688 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 03:04:23,689 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 03:04:23,691 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 03:04:23,692 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 03:04:23,693 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 03:04:23,695 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 03:04:23,695 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 03:04:23,696 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 03:04:23,697 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 03:04:23,697 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 03:04:23,698 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 03:04:23,698 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 03:04:23,699 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 03:04:23,700 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 03:04:23,701 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 03:04:23,702 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 03:04:23,702 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 03:04:23,702 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 03:04:23,703 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 03:04:23,703 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 03:04:23,704 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 03:04:23,705 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 03:04:23,706 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 03:04:23,720 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 03:04:23,721 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 03:04:23,722 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 03:04:23,723 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 03:04:23,723 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 03:04:23,724 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 03:04:23,724 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 03:04:23,724 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 03:04:23,724 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 03:04:23,724 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 03:04:23,725 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 03:04:23,726 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 03:04:23,726 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 03:04:23,726 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 03:04:23,726 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 03:04:23,727 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 03:04:23,727 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 03:04:23,727 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 03:04:23,727 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 03:04:23,728 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 03:04:23,728 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 03:04:23,728 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 03:04:23,729 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 03:04:23,729 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 03:04:23,729 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 03:04:23,729 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 03:04:23,729 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 03:04:23,729 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 03:04:23,730 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 03:04:24,048 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 03:04:24,072 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 03:04:24,077 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 03:04:24,078 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 03:04:24,078 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 03:04:24,079 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench/bresenham.c [2019-10-15 03:04:24,140 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fff928cb0/6bd83b67707845fea534af6ecbc24822/FLAG8843f944f [2019-10-15 03:04:24,588 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 03:04:24,588 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench/bresenham.c [2019-10-15 03:04:24,595 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fff928cb0/6bd83b67707845fea534af6ecbc24822/FLAG8843f944f [2019-10-15 03:04:24,964 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fff928cb0/6bd83b67707845fea534af6ecbc24822 [2019-10-15 03:04:24,974 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 03:04:24,976 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 03:04:24,978 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 03:04:24,978 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 03:04:24,982 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 03:04:24,983 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:04:24" (1/1) ... [2019-10-15 03:04:24,987 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c9fb768 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:04:24, skipping insertion in model container [2019-10-15 03:04:24,987 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:04:24" (1/1) ... [2019-10-15 03:04:24,995 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 03:04:25,014 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 03:04:25,220 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:04:25,224 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 03:04:25,242 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:04:25,255 INFO L192 MainTranslator]: Completed translation [2019-10-15 03:04:25,256 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:04:25 WrapperNode [2019-10-15 03:04:25,256 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 03:04:25,257 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 03:04:25,257 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 03:04:25,257 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 03:04:25,357 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:04:25" (1/1) ... [2019-10-15 03:04:25,357 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:04:25" (1/1) ... [2019-10-15 03:04:25,368 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:04:25" (1/1) ... [2019-10-15 03:04:25,368 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:04:25" (1/1) ... [2019-10-15 03:04:25,375 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:04:25" (1/1) ... [2019-10-15 03:04:25,385 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:04:25" (1/1) ... [2019-10-15 03:04:25,387 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:04:25" (1/1) ... [2019-10-15 03:04:25,396 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 03:04:25,397 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 03:04:25,397 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 03:04:25,397 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 03:04:25,398 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:04:25" (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 03:04:25,457 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 03:04:25,457 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 03:04:25,457 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-15 03:04:25,458 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 03:04:25,458 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 03:04:25,458 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 03:04:25,458 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-15 03:04:25,458 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-15 03:04:25,458 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 03:04:25,459 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 03:04:25,459 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 03:04:25,755 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 03:04:25,755 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-15 03:04:25,757 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:04:25 BoogieIcfgContainer [2019-10-15 03:04:25,757 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 03:04:25,764 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 03:04:25,765 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 03:04:25,769 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 03:04:25,770 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:04:24" (1/3) ... [2019-10-15 03:04:25,774 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49b3e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:04:25, skipping insertion in model container [2019-10-15 03:04:25,774 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:04:25" (2/3) ... [2019-10-15 03:04:25,775 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49b3e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:04:25, skipping insertion in model container [2019-10-15 03:04:25,775 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:04:25" (3/3) ... [2019-10-15 03:04:25,781 INFO L109 eAbstractionObserver]: Analyzing ICFG bresenham.c [2019-10-15 03:04:25,803 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 03:04:25,816 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 03:04:25,828 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 03:04:25,856 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 03:04:25,856 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 03:04:25,856 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 03:04:25,857 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 03:04:25,857 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 03:04:25,857 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 03:04:25,857 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 03:04:25,857 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 03:04:25,878 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2019-10-15 03:04:25,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-10-15 03:04:25,885 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:04:25,886 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:04:25,890 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:04:25,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:04:25,899 INFO L82 PathProgramCache]: Analyzing trace with hash 1598892056, now seen corresponding path program 1 times [2019-10-15 03:04:25,911 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:04:25,911 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043554200] [2019-10-15 03:04:25,912 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:04:25,912 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:04:25,912 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:04:26,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:04:26,048 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 03:04:26,049 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043554200] [2019-10-15 03:04:26,050 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:04:26,050 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-15 03:04:26,051 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142514739] [2019-10-15 03:04:26,058 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-15 03:04:26,059 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:04:26,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-15 03:04:26,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 03:04:26,076 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 2 states. [2019-10-15 03:04:26,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:04:26,105 INFO L93 Difference]: Finished difference Result 33 states and 41 transitions. [2019-10-15 03:04:26,105 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-15 03:04:26,107 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-10-15 03:04:26,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:04:26,118 INFO L225 Difference]: With dead ends: 33 [2019-10-15 03:04:26,118 INFO L226 Difference]: Without dead ends: 15 [2019-10-15 03:04:26,123 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 03:04:26,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2019-10-15 03:04:26,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2019-10-15 03:04:26,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-10-15 03:04:26,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2019-10-15 03:04:26,189 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 10 [2019-10-15 03:04:26,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:04:26,190 INFO L462 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2019-10-15 03:04:26,191 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-15 03:04:26,192 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2019-10-15 03:04:26,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-10-15 03:04:26,194 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:04:26,194 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:04:26,194 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:04:26,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:04:26,196 INFO L82 PathProgramCache]: Analyzing trace with hash 1561891634, now seen corresponding path program 1 times [2019-10-15 03:04:26,197 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:04:26,198 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197381048] [2019-10-15 03:04:26,198 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:04:26,198 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:04:26,198 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:04:26,223 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-15 03:04:26,223 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [974336223] [2019-10-15 03:04:26,223 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 03:04:26,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:04:26,294 INFO L256 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 12 conjunts are in the unsatisfiable core [2019-10-15 03:04:26,299 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:04:26,395 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 03:04:26,396 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:04:26,496 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 03:04:26,497 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197381048] [2019-10-15 03:04:26,497 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-15 03:04:26,497 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [974336223] [2019-10-15 03:04:26,498 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:04:26,498 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2019-10-15 03:04:26,498 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844645459] [2019-10-15 03:04:26,500 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-15 03:04:26,500 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:04:26,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-15 03:04:26,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-10-15 03:04:26,501 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand 8 states. [2019-10-15 03:04:26,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:04:26,704 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2019-10-15 03:04:26,705 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 03:04:26,705 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 10 [2019-10-15 03:04:26,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:04:26,707 INFO L225 Difference]: With dead ends: 25 [2019-10-15 03:04:26,707 INFO L226 Difference]: Without dead ends: 20 [2019-10-15 03:04:26,708 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-10-15 03:04:26,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2019-10-15 03:04:26,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2019-10-15 03:04:26,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-10-15 03:04:26,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2019-10-15 03:04:26,722 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 10 [2019-10-15 03:04:26,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:04:26,723 INFO L462 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2019-10-15 03:04:26,723 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-15 03:04:26,724 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2019-10-15 03:04:26,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-10-15 03:04:26,729 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:04:26,730 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:04:26,944 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:04:26,944 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:04:26,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:04:26,945 INFO L82 PathProgramCache]: Analyzing trace with hash -148694472, now seen corresponding path program 1 times [2019-10-15 03:04:26,947 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:04:26,947 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917676302] [2019-10-15 03:04:26,947 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:04:26,948 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:04:26,948 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:04:26,960 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-15 03:04:26,961 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [740414956] [2019-10-15 03:04:26,961 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 03:04:27,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:04:27,030 INFO L256 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 25 conjunts are in the unsatisfiable core [2019-10-15 03:04:27,039 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:04:27,306 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:04:27,366 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-15 03:04:27,367 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:04:27,560 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:04:29,591 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 (* 2 c_main_~Y~0)) (.cse1 (* (* c_main_~Y~0 2) c_main_~x~0))) (or (<= c_main_~x~0 c_main_~X~0) (= (+ .cse0 (* 2 c_main_~y~0) .cse1) (+ c_main_~v~0 c_main_~X~0 (* (* c_main_~x~0 2) c_main_~y~0))) (not (= (+ .cse0 .cse1) (+ c_main_~v~0 c_main_~X~0 (* (* c_main_~X~0 2) c_main_~y~0)))))) is different from true [2019-10-15 03:04:29,594 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 03:04:29,596 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:04:29,627 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:04:29,672 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-15 03:04:29,672 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917676302] [2019-10-15 03:04:29,672 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-15 03:04:29,673 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [740414956] [2019-10-15 03:04:29,673 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [389037840] [2019-10-15 03:04:29,700 INFO L162 IcfgInterpreter]: Started Sifa with 15 locations of interest [2019-10-15 03:04:29,700 INFO L169 IcfgInterpreter]: Building call graph [2019-10-15 03:04:29,707 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-15 03:04:29,715 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-15 03:04:29,716 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-15 03:04:29,773 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 1 for LOIs [2019-10-15 03:04:30,252 INFO L199 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 9 for LOIs [2019-10-15 03:04:30,294 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 1 for LOIs [2019-10-15 03:04:30,297 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-15 03:04:31,082 WARN L191 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2019-10-15 03:04:31,083 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-10-15 03:04:31,084 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 9] total 23 [2019-10-15 03:04:31,084 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128175718] [2019-10-15 03:04:31,086 INFO L442 AbstractCegarLoop]: Interpolant automaton has 23 states [2019-10-15 03:04:31,086 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:04:31,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2019-10-15 03:04:31,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=389, Unknown=1, NotChecked=40, Total=506 [2019-10-15 03:04:31,088 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand 23 states. [2019-10-15 03:05:00,834 WARN L191 SmtUtils]: Spent 29.01 s on a formula simplification. DAG size of input: 42 DAG size of output: 40