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/prodbin.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 23:00:47,266 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 23:00:47,268 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 23:00:47,287 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 23:00:47,288 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 23:00:47,290 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 23:00:47,292 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 23:00:47,301 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 23:00:47,307 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 23:00:47,310 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 23:00:47,311 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 23:00:47,313 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 23:00:47,313 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 23:00:47,315 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 23:00:47,317 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 23:00:47,319 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 23:00:47,320 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 23:00:47,323 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 23:00:47,324 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 23:00:47,329 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 23:00:47,335 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 23:00:47,338 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 23:00:47,341 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 23:00:47,343 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 23:00:47,345 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 23:00:47,345 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 23:00:47,345 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 23:00:47,346 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 23:00:47,347 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 23:00:47,348 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 23:00:47,348 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 23:00:47,349 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 23:00:47,350 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 23:00:47,351 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 23:00:47,353 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 23:00:47,353 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 23:00:47,354 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 23:00:47,354 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 23:00:47,354 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 23:00:47,355 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 23:00:47,357 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 23:00:47,357 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 [2019-10-13 23:00:47,393 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 23:00:47,393 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 23:00:47,395 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 23:00:47,395 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 23:00:47,395 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 23:00:47,397 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 23:00:47,398 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 23:00:47,398 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 23:00:47,398 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 23:00:47,398 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 23:00:47,398 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 23:00:47,399 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 23:00:47,399 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 23:00:47,399 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 23:00:47,399 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 23:00:47,399 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 23:00:47,399 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 23:00:47,400 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 23:00:47,400 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 23:00:47,400 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 23:00:47,402 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 23:00:47,403 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 23:00:47,403 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 23:00:47,403 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 23:00:47,403 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 23:00:47,403 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 23:00:47,404 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 23:00:47,404 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 23:00:47,407 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 [2019-10-13 23:00:47,702 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 23:00:47,715 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 23:00:47,718 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 23:00:47,720 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 23:00:47,720 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 23:00:47,721 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench/prodbin.c [2019-10-13 23:00:47,796 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/807b6e3ae/ec9d85ee4bd243d6836c40737822c7f0/FLAGef9e67a45 [2019-10-13 23:00:48,231 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 23:00:48,232 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench/prodbin.c [2019-10-13 23:00:48,238 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/807b6e3ae/ec9d85ee4bd243d6836c40737822c7f0/FLAGef9e67a45 [2019-10-13 23:00:48,612 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/807b6e3ae/ec9d85ee4bd243d6836c40737822c7f0 [2019-10-13 23:00:48,621 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 23:00:48,622 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 23:00:48,623 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 23:00:48,623 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 23:00:48,627 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 23:00:48,627 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:00:48" (1/1) ... [2019-10-13 23:00:48,630 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@760b8f94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:00:48, skipping insertion in model container [2019-10-13 23:00:48,630 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:00:48" (1/1) ... [2019-10-13 23:00:48,635 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 23:00:48,650 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 23:00:48,815 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 23:00:48,819 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 23:00:48,842 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 23:00:48,857 INFO L192 MainTranslator]: Completed translation [2019-10-13 23:00:48,857 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:00:48 WrapperNode [2019-10-13 23:00:48,857 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 23:00:48,858 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 23:00:48,858 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 23:00:48,858 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 23:00:48,942 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:00:48" (1/1) ... [2019-10-13 23:00:48,942 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:00:48" (1/1) ... [2019-10-13 23:00:48,948 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:00:48" (1/1) ... [2019-10-13 23:00:48,949 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:00:48" (1/1) ... [2019-10-13 23:00:48,953 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:00:48" (1/1) ... [2019-10-13 23:00:48,961 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:00:48" (1/1) ... [2019-10-13 23:00:48,962 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:00:48" (1/1) ... [2019-10-13 23:00:48,963 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 23:00:48,964 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 23:00:48,965 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 23:00:48,965 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 23:00:48,966 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:00:48" (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 [2019-10-13 23:00:49,013 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 23:00:49,013 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 23:00:49,013 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-13 23:00:49,013 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 23:00:49,013 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 23:00:49,013 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2019-10-13 23:00:49,014 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-13 23:00:49,014 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-13 23:00:49,014 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 23:00:49,014 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 23:00:49,014 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 23:00:49,288 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 23:00:49,289 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-13 23:00:49,290 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:00:49 BoogieIcfgContainer [2019-10-13 23:00:49,291 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 23:00:49,292 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 23:00:49,292 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 23:00:49,306 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 23:00:49,306 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 11:00:48" (1/3) ... [2019-10-13 23:00:49,307 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2622ced4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:00:49, skipping insertion in model container [2019-10-13 23:00:49,307 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:00:48" (2/3) ... [2019-10-13 23:00:49,307 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2622ced4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:00:49, skipping insertion in model container [2019-10-13 23:00:49,308 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:00:49" (3/3) ... [2019-10-13 23:00:49,309 INFO L109 eAbstractionObserver]: Analyzing ICFG prodbin.c [2019-10-13 23:00:49,318 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 23:00:49,324 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 23:00:49,333 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 23:00:49,356 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 23:00:49,357 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 23:00:49,357 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 23:00:49,357 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 23:00:49,357 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 23:00:49,357 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 23:00:49,357 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 23:00:49,357 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 23:00:49,373 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2019-10-13 23:00:49,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-10-13 23:00:49,379 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:00:49,380 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:00:49,381 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:00:49,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:00:49,386 INFO L82 PathProgramCache]: Analyzing trace with hash 1598892056, now seen corresponding path program 1 times [2019-10-13 23:00:49,392 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:00:49,393 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088145211] [2019-10-13 23:00:49,393 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:00:49,393 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:00:49,393 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:00:49,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:00:49,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 23:00:49,486 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088145211] [2019-10-13 23:00:49,487 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:00:49,487 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-13 23:00:49,488 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431571574] [2019-10-13 23:00:49,491 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 23:00:49,492 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:00:49,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 23:00:49,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 23:00:49,504 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 2 states. [2019-10-13 23:00:49,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:00:49,526 INFO L93 Difference]: Finished difference Result 33 states and 41 transitions. [2019-10-13 23:00:49,526 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 23:00:49,528 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-10-13 23:00:49,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:00:49,537 INFO L225 Difference]: With dead ends: 33 [2019-10-13 23:00:49,537 INFO L226 Difference]: Without dead ends: 15 [2019-10-13 23:00:49,541 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 [2019-10-13 23:00:49,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2019-10-13 23:00:49,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2019-10-13 23:00:49,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-10-13 23:00:49,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2019-10-13 23:00:49,574 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 10 [2019-10-13 23:00:49,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:00:49,574 INFO L462 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2019-10-13 23:00:49,574 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 23:00:49,575 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2019-10-13 23:00:49,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-10-13 23:00:49,576 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:00:49,576 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:00:49,576 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:00:49,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:00:49,577 INFO L82 PathProgramCache]: Analyzing trace with hash 1561891634, now seen corresponding path program 1 times [2019-10-13 23:00:49,577 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:00:49,578 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431011572] [2019-10-13 23:00:49,578 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:00:49,578 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:00:49,578 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:00:49,585 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-13 23:00:49,586 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1342584468] [2019-10-13 23:00:49,586 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 [2019-10-13 23:00:49,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:00:49,631 INFO L256 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 13 conjunts are in the unsatisfiable core [2019-10-13 23:00:49,636 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:00:49,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 23:00:49,714 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:00:49,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 23:00:49,788 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431011572] [2019-10-13 23:00:49,790 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-13 23:00:49,790 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1342584468] [2019-10-13 23:00:49,791 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:00:49,791 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2019-10-13 23:00:49,791 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770085742] [2019-10-13 23:00:49,793 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-13 23:00:49,793 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:00:49,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-13 23:00:49,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-10-13 23:00:49,794 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand 8 states. [2019-10-13 23:00:49,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:00:49,883 INFO L93 Difference]: Finished difference Result 33 states and 37 transitions. [2019-10-13 23:00:49,884 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 23:00:49,884 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 10 [2019-10-13 23:00:49,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:00:49,886 INFO L225 Difference]: With dead ends: 33 [2019-10-13 23:00:49,886 INFO L226 Difference]: Without dead ends: 26 [2019-10-13 23:00:49,887 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 [2019-10-13 23:00:49,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2019-10-13 23:00:49,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2019-10-13 23:00:49,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-10-13 23:00:49,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions. [2019-10-13 23:00:49,898 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 26 transitions. Word has length 10 [2019-10-13 23:00:49,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:00:49,898 INFO L462 AbstractCegarLoop]: Abstraction has 24 states and 26 transitions. [2019-10-13 23:00:49,898 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-13 23:00:49,899 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2019-10-13 23:00:49,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-10-13 23:00:49,901 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:00:49,901 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:00:50,104 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:00:50,105 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:00:50,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:00:50,106 INFO L82 PathProgramCache]: Analyzing trace with hash -148694472, now seen corresponding path program 1 times [2019-10-13 23:00:50,106 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:00:50,107 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999957412] [2019-10-13 23:00:50,108 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:00:50,108 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:00:50,109 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:00:50,117 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-13 23:00:50,118 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [805252677] [2019-10-13 23:00:50,118 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 [2019-10-13 23:00:50,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:00:50,151 INFO L256 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 14 conjunts are in the unsatisfiable core [2019-10-13 23:00:50,153 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:00:50,263 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 23:00:50,264 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:00:50,353 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:00:50,359 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:00:50,394 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 23:00:50,394 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999957412] [2019-10-13 23:00:50,394 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-13 23:00:50,395 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [805252677] [2019-10-13 23:00:50,395 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [704577479] [2019-10-13 23:00:50,420 INFO L162 IcfgInterpreter]: Started Sifa with 15 locations of interest [2019-10-13 23:00:50,421 INFO L169 IcfgInterpreter]: Building call graph [2019-10-13 23:00:50,428 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-13 23:00:50,436 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-13 23:00:50,437 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-13 23:00:50,500 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 1 for LOIs [2019-10-13 23:00:50,966 INFO L199 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 9 for LOIs [2019-10-13 23:00:51,043 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 1 for LOIs [2019-10-13 23:00:51,047 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-13 23:00:51,048 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-13 23:00:51,048 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initFINAL satisfy 195#true [2019-10-13 23:00:51,048 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertEXIT satisfy 191#(and (or (and (= |__VERIFIER_assert_#in~cond| 0) (not (= 0 __VERIFIER_assert_~cond)) (<= 0 |__VERIFIER_assert_#in~cond|) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) (and (= |__VERIFIER_assert_#in~cond| 1) (not (= 0 __VERIFIER_assert_~cond)) (<= 0 |__VERIFIER_assert_#in~cond|) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond))) (<= 1 __VERIFIER_assert_~cond) (<= 1 |__VERIFIER_assert_#in~cond|) (<= __VERIFIER_assert_~cond 1) (<= |__VERIFIER_assert_#in~cond| 1)) [2019-10-13 23:00:51,049 INFO L193 IcfgInterpreter]: Reachable states at location L27-3 satisfy 157#(and (= main_~y~0 0) (<= 0 main_~y~0) (= (+ (* main_~x~0 main_~y~0) main_~z~0) (* main_~a~0 main_~b~0)) (<= main_~y~0 0)) [2019-10-13 23:00:51,049 INFO L193 IcfgInterpreter]: Reachable states at location L27-2 satisfy 121#true [2019-10-13 23:00:51,050 INFO L193 IcfgInterpreter]: Reachable states at location L-1 satisfy 23#true [2019-10-13 23:00:51,050 INFO L193 IcfgInterpreter]: Reachable states at location mainENTRY satisfy 33#true [2019-10-13 23:00:51,050 INFO L193 IcfgInterpreter]: Reachable states at location L28-1 satisfy 138#(= (+ (* main_~x~0 main_~y~0) main_~z~0) (* main_~a~0 main_~b~0)) [2019-10-13 23:00:51,050 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 200#true [2019-10-13 23:00:51,051 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-13 23:00:51,051 INFO L193 IcfgInterpreter]: Reachable states at location L28 satisfy 126#true [2019-10-13 23:00:51,052 INFO L193 IcfgInterpreter]: Reachable states at location L8-2 satisfy 186#(and (or (and (= |__VERIFIER_assert_#in~cond| 0) (not (= 0 __VERIFIER_assert_~cond)) (<= 0 |__VERIFIER_assert_#in~cond|) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) (and (= |__VERIFIER_assert_#in~cond| 1) (not (= 0 __VERIFIER_assert_~cond)) (<= 0 |__VERIFIER_assert_#in~cond|) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond))) (<= 1 __VERIFIER_assert_~cond) (<= 1 |__VERIFIER_assert_#in~cond|) (<= __VERIFIER_assert_~cond 1) (<= |__VERIFIER_assert_#in~cond| 1)) [2019-10-13 23:00:51,053 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 181#(and (<= __VERIFIER_assert_~cond 0) (<= |__VERIFIER_assert_#in~cond| 0) (or (and (= |__VERIFIER_assert_#in~cond| 1) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 1) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) (and (= |__VERIFIER_assert_#in~cond| 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 1) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond))) (<= 0 __VERIFIER_assert_~cond)) [2019-10-13 23:00:51,053 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertENTRY satisfy 166#(and (or (<= 1 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0)) (or (and (= |__VERIFIER_assert_#in~cond| 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 1)) (and (= |__VERIFIER_assert_#in~cond| 1) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 1)))) [2019-10-13 23:00:51,054 INFO L193 IcfgInterpreter]: Reachable states at location L9 satisfy 176#(and (<= __VERIFIER_assert_~cond 0) (<= |__VERIFIER_assert_#in~cond| 0) (or (and (= |__VERIFIER_assert_#in~cond| 1) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 1) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) (and (= |__VERIFIER_assert_#in~cond| 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 1) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond))) (<= 0 __VERIFIER_assert_~cond)) [2019-10-13 23:00:51,054 INFO L193 IcfgInterpreter]: Reachable states at location L8 satisfy 171#(and (or (and (= |__VERIFIER_assert_#in~cond| 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 1) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) (and (= |__VERIFIER_assert_#in~cond| 1) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 1) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond))) (or (and (<= __VERIFIER_assert_~cond 0) (<= |__VERIFIER_assert_#in~cond| 0) (<= 0 __VERIFIER_assert_~cond)) (and (<= 1 __VERIFIER_assert_~cond) (<= 1 |__VERIFIER_assert_#in~cond|) (<= __VERIFIER_assert_~cond 1)))) [2019-10-13 23:00:51,280 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-10-13 23:00:51,280 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 19 [2019-10-13 23:00:51,280 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205928075] [2019-10-13 23:00:51,282 INFO L442 AbstractCegarLoop]: Interpolant automaton has 19 states [2019-10-13 23:00:51,282 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:00:51,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2019-10-13 23:00:51,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2019-10-13 23:00:51,284 INFO L87 Difference]: Start difference. First operand 24 states and 26 transitions. Second operand 19 states. [2019-10-13 23:00:51,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:00:51,444 INFO L93 Difference]: Finished difference Result 30 states and 32 transitions. [2019-10-13 23:00:51,444 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-13 23:00:51,445 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 23 [2019-10-13 23:00:51,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:00:51,449 INFO L225 Difference]: With dead ends: 30 [2019-10-13 23:00:51,450 INFO L226 Difference]: Without dead ends: 25 [2019-10-13 23:00:51,451 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=83, Invalid=337, Unknown=0, NotChecked=0, Total=420 [2019-10-13 23:00:51,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2019-10-13 23:00:51,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 23. [2019-10-13 23:00:51,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-10-13 23:00:51,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2019-10-13 23:00:51,466 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 23 [2019-10-13 23:00:51,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:00:51,467 INFO L462 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2019-10-13 23:00:51,467 INFO L463 AbstractCegarLoop]: Interpolant automaton has 19 states. [2019-10-13 23:00:51,468 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2019-10-13 23:00:51,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-10-13 23:00:51,469 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:00:51,469 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:00:51,673 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:00:51,673 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:00:51,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:00:51,674 INFO L82 PathProgramCache]: Analyzing trace with hash 768249234, now seen corresponding path program 1 times [2019-10-13 23:00:51,674 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:00:51,675 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652050762] [2019-10-13 23:00:51,675 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:00:51,675 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:00:51,675 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:00:51,687 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-13 23:00:51,687 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [852138243] [2019-10-13 23:00:51,688 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:00:51,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:00:51,736 INFO L256 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 25 conjunts are in the unsatisfiable core [2019-10-13 23:00:51,739 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:00:59,674 WARN L191 SmtUtils]: Spent 7.85 s on a formula simplification. DAG size of input: 141 DAG size of output: 23 [2019-10-13 23:01:21,612 WARN L191 SmtUtils]: Spent 21.48 s on a formula simplification. DAG size of input: 224 DAG size of output: 71 [2019-10-13 23:01:21,718 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 4 refuted. 4 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-13 23:01:21,719 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:01:26,342 WARN L191 SmtUtils]: Spent 476.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 38 [2019-10-13 23:01:26,984 WARN L191 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 30 [2019-10-13 23:01:27,097 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-13 23:01:27,097 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652050762] [2019-10-13 23:01:27,097 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-13 23:01:27,098 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [852138243] [2019-10-13 23:01:27,098 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1748432502] [2019-10-13 23:01:27,100 INFO L162 IcfgInterpreter]: Started Sifa with 14 locations of interest [2019-10-13 23:01:27,100 INFO L169 IcfgInterpreter]: Building call graph [2019-10-13 23:01:27,101 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-13 23:01:27,101 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-13 23:01:27,101 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-13 23:01:27,115 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 1 for LOIs [2019-10-13 23:01:27,264 INFO L199 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 6 for LOIs [2019-10-13 23:01:27,293 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 1 for LOIs [2019-10-13 23:01:27,296 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-13 23:01:27,296 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-13 23:01:27,297 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initFINAL satisfy 172#true [2019-10-13 23:01:27,297 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertEXIT satisfy 168#(and (or (and (= |__VERIFIER_assert_#in~cond| 1) (not (= 0 __VERIFIER_assert_~cond)) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) (and (= |__VERIFIER_assert_#in~cond| 0) (not (= 0 __VERIFIER_assert_~cond)) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond))) (<= 1 __VERIFIER_assert_~cond) (<= 1 |__VERIFIER_assert_#in~cond|) (<= __VERIFIER_assert_~cond 1) (<= |__VERIFIER_assert_#in~cond| 1)) [2019-10-13 23:01:27,297 INFO L193 IcfgInterpreter]: Reachable states at location L27-2 satisfy 121#true [2019-10-13 23:01:27,297 INFO L193 IcfgInterpreter]: Reachable states at location L-1 satisfy 23#true [2019-10-13 23:01:27,298 INFO L193 IcfgInterpreter]: Reachable states at location mainENTRY satisfy 33#true [2019-10-13 23:01:27,298 INFO L193 IcfgInterpreter]: Reachable states at location L28-1 satisfy 139#(= (+ (* main_~x~0 main_~y~0) main_~z~0) (* main_~a~0 main_~b~0)) [2019-10-13 23:01:27,298 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 177#true [2019-10-13 23:01:27,298 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-13 23:01:27,299 INFO L193 IcfgInterpreter]: Reachable states at location L28 satisfy 126#true [2019-10-13 23:01:27,299 INFO L193 IcfgInterpreter]: Reachable states at location L8-2 satisfy 163#(and (or (and (= |__VERIFIER_assert_#in~cond| 1) (not (= 0 __VERIFIER_assert_~cond)) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) (and (= |__VERIFIER_assert_#in~cond| 0) (not (= 0 __VERIFIER_assert_~cond)) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond))) (<= 1 __VERIFIER_assert_~cond) (<= 1 |__VERIFIER_assert_#in~cond|) (<= __VERIFIER_assert_~cond 1) (<= |__VERIFIER_assert_#in~cond| 1)) [2019-10-13 23:01:27,299 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 158#(and (or (and (= |__VERIFIER_assert_#in~cond| 0) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) (and (= |__VERIFIER_assert_#in~cond| 1) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond))) (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (<= 0 __VERIFIER_assert_~cond)) [2019-10-13 23:01:27,299 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertENTRY satisfy 143#(and (or (and (<= 1 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 1)) (and (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0))) (or (= |__VERIFIER_assert_#in~cond| 0) (= |__VERIFIER_assert_#in~cond| 1))) [2019-10-13 23:01:27,300 INFO L193 IcfgInterpreter]: Reachable states at location L9 satisfy 153#(and (or (and (= |__VERIFIER_assert_#in~cond| 0) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) (and (= |__VERIFIER_assert_#in~cond| 1) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond))) (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (<= 0 __VERIFIER_assert_~cond)) [2019-10-13 23:01:27,300 INFO L193 IcfgInterpreter]: Reachable states at location L8 satisfy 148#(and (or (and (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (<= 0 __VERIFIER_assert_~cond)) (and (<= 1 __VERIFIER_assert_~cond) (<= 1 |__VERIFIER_assert_#in~cond|) (<= __VERIFIER_assert_~cond 1) (<= |__VERIFIER_assert_#in~cond| 1))) (or (and (= |__VERIFIER_assert_#in~cond| 0) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) (and (= |__VERIFIER_assert_#in~cond| 1) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)))) [2019-10-13 23:01:27,499 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-10-13 23:01:27,499 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 6] total 20 [2019-10-13 23:01:27,499 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042970465] [2019-10-13 23:01:27,500 INFO L442 AbstractCegarLoop]: Interpolant automaton has 20 states [2019-10-13 23:01:27,500 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:01:27,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2019-10-13 23:01:27,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=306, Unknown=4, NotChecked=0, Total=380 [2019-10-13 23:01:27,501 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand 20 states. [2019-10-13 23:01:28,910 WARN L191 SmtUtils]: Spent 1.09 s on a formula simplification. DAG size of input: 55 DAG size of output: 28