/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/nla-digbench/ps5.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-24 04:30:35,525 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-24 04:30:35,528 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-24 04:30:35,540 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-24 04:30:35,541 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-24 04:30:35,542 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-24 04:30:35,543 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-24 04:30:35,545 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-24 04:30:35,546 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-24 04:30:35,547 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-24 04:30:35,548 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-24 04:30:35,549 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-24 04:30:35,549 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-24 04:30:35,550 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-24 04:30:35,551 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-24 04:30:35,552 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-24 04:30:35,553 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-24 04:30:35,554 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-24 04:30:35,556 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-24 04:30:35,558 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-24 04:30:35,559 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-24 04:30:35,560 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-24 04:30:35,561 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-24 04:30:35,562 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-24 04:30:35,564 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-24 04:30:35,571 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-24 04:30:35,572 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-24 04:30:35,573 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-24 04:30:35,574 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf [2019-11-24 04:30:35,589 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-24 04:30:35,589 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-24 04:30:35,590 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-24 04:30:35,590 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-24 04:30:35,590 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-24 04:30:35,590 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-24 04:30:35,591 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-24 04:30:35,591 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-24 04:30:35,591 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-24 04:30:35,591 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-24 04:30:35,591 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-24 04:30:35,592 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-24 04:30:35,592 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-24 04:30:35,592 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-24 04:30:35,592 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-24 04:30:35,593 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-24 04:30:35,593 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-24 04:30:35,593 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-24 04:30:35,593 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-24 04:30:35,593 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-24 04:30:35,594 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-24 04:30:35,594 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-24 04:30:35,594 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-24 04:30:35,594 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-24 04:30:35,595 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-24 04:30:35,595 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-24 04:30:35,595 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-24 04:30:35,595 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-24 04:30:35,595 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-24 04:30:35,596 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-24 04:30:35,596 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-24 04:30:35,596 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-24 04:30:35,596 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-24 04:30:35,596 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-24 04:30:35,596 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-24 04:30:35,597 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-24 04:30:35,597 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-24 04:30:35,597 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-24 04:30:35,857 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-24 04:30:35,872 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-24 04:30:35,876 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-24 04:30:35,878 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-24 04:30:35,878 INFO L275 PluginConnector]: CDTParser initialized [2019-11-24 04:30:35,879 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench/ps5.c [2019-11-24 04:30:35,953 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9b3ea2f9c/dc08cc390cfd48cc826aff8a11a6a3e2/FLAGb3a4945ae [2019-11-24 04:30:36,403 INFO L306 CDTParser]: Found 1 translation units. [2019-11-24 04:30:36,404 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench/ps5.c [2019-11-24 04:30:36,409 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9b3ea2f9c/dc08cc390cfd48cc826aff8a11a6a3e2/FLAGb3a4945ae [2019-11-24 04:30:36,802 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9b3ea2f9c/dc08cc390cfd48cc826aff8a11a6a3e2 [2019-11-24 04:30:36,812 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-24 04:30:36,814 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-24 04:30:36,815 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-24 04:30:36,815 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-24 04:30:36,819 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-24 04:30:36,820 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 04:30:36" (1/1) ... [2019-11-24 04:30:36,823 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7142d6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:30:36, skipping insertion in model container [2019-11-24 04:30:36,823 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 04:30:36" (1/1) ... [2019-11-24 04:30:36,830 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-24 04:30:36,848 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-24 04:30:37,013 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 04:30:37,018 INFO L203 MainTranslator]: Completed pre-run [2019-11-24 04:30:37,038 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 04:30:37,053 INFO L208 MainTranslator]: Completed translation [2019-11-24 04:30:37,054 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:30:37 WrapperNode [2019-11-24 04:30:37,054 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-24 04:30:37,055 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-24 04:30:37,055 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-24 04:30:37,055 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-24 04:30:37,064 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:30:37" (1/1) ... [2019-11-24 04:30:37,070 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:30:37" (1/1) ... [2019-11-24 04:30:37,170 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-24 04:30:37,170 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-24 04:30:37,171 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-24 04:30:37,171 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-24 04:30:37,180 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:30:37" (1/1) ... [2019-11-24 04:30:37,180 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:30:37" (1/1) ... [2019-11-24 04:30:37,191 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:30:37" (1/1) ... [2019-11-24 04:30:37,191 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:30:37" (1/1) ... [2019-11-24 04:30:37,193 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:30:37" (1/1) ... [2019-11-24 04:30:37,198 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:30:37" (1/1) ... [2019-11-24 04:30:37,199 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:30:37" (1/1) ... [2019-11-24 04:30:37,201 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-24 04:30:37,202 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-24 04:30:37,202 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-24 04:30:37,202 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-24 04:30:37,203 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:30:37" (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 [2019-11-24 04:30:37,262 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-24 04:30:37,265 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-24 04:30:37,515 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-24 04:30:37,515 INFO L284 CfgBuilder]: Removed 11 assume(true) statements. [2019-11-24 04:30:37,516 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 04:30:37 BoogieIcfgContainer [2019-11-24 04:30:37,516 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-24 04:30:37,517 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-24 04:30:37,517 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-24 04:30:37,521 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-24 04:30:37,521 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 04:30:36" (1/3) ... [2019-11-24 04:30:37,522 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54b4f426 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 04:30:37, skipping insertion in model container [2019-11-24 04:30:37,522 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:30:37" (2/3) ... [2019-11-24 04:30:37,523 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54b4f426 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 04:30:37, skipping insertion in model container [2019-11-24 04:30:37,523 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 04:30:37" (3/3) ... [2019-11-24 04:30:37,525 INFO L109 eAbstractionObserver]: Analyzing ICFG ps5.c [2019-11-24 04:30:37,535 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-24 04:30:37,544 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2019-11-24 04:30:37,560 INFO L249 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-11-24 04:30:37,593 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-24 04:30:37,593 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-24 04:30:37,593 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-24 04:30:37,593 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-24 04:30:37,593 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-24 04:30:37,594 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-24 04:30:37,594 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-24 04:30:37,594 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-24 04:30:37,613 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2019-11-24 04:30:37,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-11-24 04:30:37,619 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:30:37,620 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-11-24 04:30:37,621 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 04:30:37,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:30:37,629 INFO L82 PathProgramCache]: Analyzing trace with hash 963340, now seen corresponding path program 1 times [2019-11-24 04:30:37,641 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:30:37,642 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050309804] [2019-11-24 04:30:37,642 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:30:37,747 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-24 04:30:37,748 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1832209466] [2019-11-24 04:30:37,748 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 [2019-11-24 04:30:37,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:30:37,784 WARN L253 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-24 04:30:37,788 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-24 04:30:37,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 04:30:37,842 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-24 04:30:37,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 04:30:37,981 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050309804] [2019-11-24 04:30:37,981 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-24 04:30:37,981 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1832209466] [2019-11-24 04:30:37,982 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-24 04:30:37,982 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2019-11-24 04:30:37,984 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197085603] [2019-11-24 04:30:37,989 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-24 04:30:37,989 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 04:30:38,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-24 04:30:38,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-24 04:30:38,006 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 6 states. [2019-11-24 04:30:38,290 WARN L192 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2019-11-24 04:30:38,565 WARN L192 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2019-11-24 04:30:38,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 04:30:38,570 INFO L93 Difference]: Finished difference Result 36 states and 48 transitions. [2019-11-24 04:30:38,570 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-24 04:30:38,572 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 4 [2019-11-24 04:30:38,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 04:30:38,582 INFO L225 Difference]: With dead ends: 36 [2019-11-24 04:30:38,583 INFO L226 Difference]: Without dead ends: 13 [2019-11-24 04:30:38,587 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2019-11-24 04:30:38,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2019-11-24 04:30:38,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2019-11-24 04:30:38,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2019-11-24 04:30:38,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2019-11-24 04:30:38,625 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 4 [2019-11-24 04:30:38,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 04:30:38,625 INFO L462 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2019-11-24 04:30:38,626 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-24 04:30:38,626 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2019-11-24 04:30:38,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-24 04:30:38,627 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:30:38,627 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 04:30:38,831 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-24 04:30:38,831 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 04:30:38,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:30:38,832 INFO L82 PathProgramCache]: Analyzing trace with hash 1591864100, now seen corresponding path program 1 times [2019-11-24 04:30:38,832 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:30:38,833 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295585545] [2019-11-24 04:30:38,833 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:30:38,841 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-24 04:30:38,842 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [739322591] [2019-11-24 04:30:38,842 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 [2019-11-24 04:30:38,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:30:38,876 INFO L255 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 20 conjunts are in the unsatisfiable core [2019-11-24 04:30:38,877 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-24 04:30:38,974 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 04:30:38,992 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 04:30:38,993 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-24 04:30:40,466 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 04:30:42,486 WARN L838 $PredicateComparison]: unable to prove that (or (forall ((ULTIMATE.start_main_~k~0 Int)) (or (let ((.cse0 (+ c_ULTIMATE.start_main_~y~0 1))) (= (* .cse0 .cse0) (* ULTIMATE.start_main_~k~0 .cse0))) (< (+ c_ULTIMATE.start_main_~c~0 1) ULTIMATE.start_main_~k~0) (<= ULTIMATE.start_main_~k~0 c_ULTIMATE.start_main_~c~0))) (not (= 0 (mod (+ (* (* (* (* c_ULTIMATE.start_main_~y~0 10) c_ULTIMATE.start_main_~y~0) c_ULTIMATE.start_main_~y~0) 29) c_ULTIMATE.start_main_~y~0 (* (* (* (* (* c_ULTIMATE.start_main_~y~0 15) c_ULTIMATE.start_main_~y~0) c_ULTIMATE.start_main_~y~0) c_ULTIMATE.start_main_~y~0) 29) (* (* (* (* (* (* c_ULTIMATE.start_main_~y~0 6) c_ULTIMATE.start_main_~y~0) c_ULTIMATE.start_main_~y~0) c_ULTIMATE.start_main_~y~0) c_ULTIMATE.start_main_~y~0) 29)) (- 30))))) is different from false [2019-11-24 04:30:44,488 WARN L860 $PredicateComparison]: unable to prove that (or (forall ((ULTIMATE.start_main_~k~0 Int)) (or (let ((.cse0 (+ c_ULTIMATE.start_main_~y~0 1))) (= (* .cse0 .cse0) (* ULTIMATE.start_main_~k~0 .cse0))) (< (+ c_ULTIMATE.start_main_~c~0 1) ULTIMATE.start_main_~k~0) (<= ULTIMATE.start_main_~k~0 c_ULTIMATE.start_main_~c~0))) (not (= 0 (mod (+ (* (* (* (* c_ULTIMATE.start_main_~y~0 10) c_ULTIMATE.start_main_~y~0) c_ULTIMATE.start_main_~y~0) 29) c_ULTIMATE.start_main_~y~0 (* (* (* (* (* c_ULTIMATE.start_main_~y~0 15) c_ULTIMATE.start_main_~y~0) c_ULTIMATE.start_main_~y~0) c_ULTIMATE.start_main_~y~0) 29) (* (* (* (* (* (* c_ULTIMATE.start_main_~y~0 6) c_ULTIMATE.start_main_~y~0) c_ULTIMATE.start_main_~y~0) c_ULTIMATE.start_main_~y~0) c_ULTIMATE.start_main_~y~0) 29)) (- 30))))) is different from true [2019-11-24 04:30:44,490 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2019-11-24 04:30:44,491 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295585545] [2019-11-24 04:30:44,491 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-24 04:30:44,491 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [739322591] [2019-11-24 04:30:44,491 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [436076634] [2019-11-24 04:30:44,516 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2019-11-24 04:30:44,516 INFO L166 IcfgInterpreter]: Building call graph [2019-11-24 04:30:44,523 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-24 04:30:44,532 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-24 04:30:44,533 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-24 04:30:45,547 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 344 DAG size of output: 341 [2019-11-24 04:30:46,129 WARN L192 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 344 DAG size of output: 343 [2019-11-24 04:30:46,352 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 349 [2019-11-24 04:30:46,519 WARN L192 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 350 DAG size of output: 350 [2019-11-24 04:30:46,752 WARN L192 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 447 DAG size of output: 444 [2019-11-24 04:30:47,075 WARN L192 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 439 DAG size of output: 436 [2019-11-24 04:30:47,325 WARN L192 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 440 [2019-11-24 04:30:47,475 WARN L192 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 441 DAG size of output: 440 [2019-11-24 04:30:47,705 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 447 [2019-11-24 04:30:47,820 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 448 DAG size of output: 447 [2019-11-24 04:30:48,029 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 454 [2019-11-24 04:30:48,161 WARN L192 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 455 DAG size of output: 454 [2019-11-24 04:30:48,374 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 461 [2019-11-24 04:30:48,497 WARN L192 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 462 DAG size of output: 461 [2019-11-24 04:30:48,805 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 469 DAG size of output: 469 [2019-11-24 04:30:49,097 WARN L192 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 599 DAG size of output: 596 [2019-11-24 04:30:49,413 WARN L192 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 591 DAG size of output: 588 [2019-11-24 04:30:49,759 WARN L192 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 593 [2019-11-24 04:30:49,937 WARN L192 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 594 DAG size of output: 593 [2019-11-24 04:30:50,324 WARN L192 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 600 [2019-11-24 04:30:50,497 WARN L192 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 601 DAG size of output: 600 [2019-11-24 04:30:50,811 WARN L192 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 607 [2019-11-24 04:30:50,980 WARN L192 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 608 DAG size of output: 607 [2019-11-24 04:30:51,294 WARN L192 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 614 [2019-11-24 04:30:51,467 WARN L192 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 615 DAG size of output: 614 [2019-11-24 04:30:51,879 WARN L192 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 621 [2019-11-24 04:30:52,068 WARN L192 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 622 DAG size of output: 622 [2019-11-24 04:30:54,483 WARN L192 SmtUtils]: Spent 295.00 ms on a formula simplification. DAG size of input: 797 DAG size of output: 793 [2019-11-24 04:30:55,000 WARN L192 SmtUtils]: Spent 382.00 ms on a formula simplification. DAG size of input: 788 DAG size of output: 785 [2019-11-24 04:30:55,667 WARN L192 SmtUtils]: Spent 418.00 ms on a formula simplification that was a NOOP. DAG size: 790 [2019-11-24 04:30:56,021 WARN L192 SmtUtils]: Spent 350.00 ms on a formula simplification. DAG size of input: 791 DAG size of output: 790 [2019-11-24 04:30:57,689 WARN L192 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 797 [2019-11-24 04:30:57,991 WARN L192 SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 798 DAG size of output: 798 [2019-11-24 04:30:58,575 WARN L192 SmtUtils]: Spent 496.00 ms on a formula simplification. DAG size of input: 993 DAG size of output: 992 [2019-11-24 04:30:59,250 WARN L192 SmtUtils]: Spent 478.00 ms on a formula simplification. DAG size of input: 987 DAG size of output: 986 [2019-11-24 04:31:00,155 WARN L192 SmtUtils]: Spent 793.00 ms on a formula simplification. DAG size of input: 1219 DAG size of output: 1218 [2019-11-24 04:31:01,232 WARN L192 SmtUtils]: Spent 802.00 ms on a formula simplification. DAG size of input: 1213 DAG size of output: 1212 [2019-11-24 04:31:06,680 WARN L192 SmtUtils]: Spent 1.56 s on a formula simplification. DAG size of input: 1489 DAG size of output: 1485 [2019-11-24 04:31:08,757 WARN L192 SmtUtils]: Spent 1.69 s on a formula simplification. DAG size of input: 1479 DAG size of output: 1471 [2019-11-24 04:31:10,848 WARN L192 SmtUtils]: Spent 1.58 s on a formula simplification that was a NOOP. DAG size: 1471 [2019-11-24 04:31:12,548 WARN L192 SmtUtils]: Spent 1.70 s on a formula simplification. DAG size of input: 1472 DAG size of output: 1472 [2019-11-24 04:31:17,800 WARN L192 SmtUtils]: Spent 2.91 s on a formula simplification. DAG size of input: 1841 DAG size of output: 1839 [2019-11-24 04:31:20,942 WARN L192 SmtUtils]: Spent 2.64 s on a formula simplification. DAG size of input: 1832 DAG size of output: 1831 [2019-11-24 04:31:26,225 WARN L192 SmtUtils]: Spent 4.62 s on a formula simplification. DAG size of input: 2254 DAG size of output: 2246 [2019-11-24 04:31:31,071 WARN L192 SmtUtils]: Spent 4.20 s on a formula simplification. DAG size of input: 2233 DAG size of output: 2228 [2019-11-24 04:31:38,981 WARN L192 SmtUtils]: Spent 4.74 s on a formula simplification that was a NOOP. DAG size: 2230 [2019-11-24 04:31:43,824 WARN L192 SmtUtils]: Spent 4.84 s on a formula simplification. DAG size of input: 2231 DAG size of output: 2230 [2019-11-24 04:31:49,526 WARN L192 SmtUtils]: Spent 4.81 s on a formula simplification that was a NOOP. DAG size: 2237 [2019-11-24 04:31:54,485 WARN L192 SmtUtils]: Spent 4.95 s on a formula simplification. DAG size of input: 2238 DAG size of output: 2237 [2019-11-24 04:32:02,704 WARN L192 SmtUtils]: Spent 4.89 s on a formula simplification that was a NOOP. DAG size: 2244 [2019-11-24 04:32:07,805 WARN L192 SmtUtils]: Spent 5.10 s on a formula simplification. DAG size of input: 2245 DAG size of output: 2244 [2019-11-24 04:32:13,781 WARN L192 SmtUtils]: Spent 5.03 s on a formula simplification that was a NOOP. DAG size: 2251