/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/ps4.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-24 04:30:30,793 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-24 04:30:30,796 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-24 04:30:30,812 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-24 04:30:30,812 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-24 04:30:30,813 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-24 04:30:30,814 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-24 04:30:30,816 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-24 04:30:30,818 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-24 04:30:30,819 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-24 04:30:30,819 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-24 04:30:30,821 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-24 04:30:30,821 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-24 04:30:30,822 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-24 04:30:30,823 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-24 04:30:30,824 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-24 04:30:30,824 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-24 04:30:30,825 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-24 04:30:30,827 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-24 04:30:30,829 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-24 04:30:30,830 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-24 04:30:30,831 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-24 04:30:30,833 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-24 04:30:30,833 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-24 04:30:30,835 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-24 04:30:30,836 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-24 04:30:30,836 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-24 04:30:30,837 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-24 04:30:30,837 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-24 04:30:30,838 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-24 04:30:30,839 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-24 04:30:30,839 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-24 04:30:30,840 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-24 04:30:30,841 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-24 04:30:30,842 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-24 04:30:30,842 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-24 04:30:30,843 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-24 04:30:30,843 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-24 04:30:30,843 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-24 04:30:30,844 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-24 04:30:30,845 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-24 04:30:30,845 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 04:30:30,860 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-24 04:30:30,860 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-24 04:30:30,861 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-24 04:30:30,861 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-24 04:30:30,861 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-24 04:30:30,862 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-24 04:30:30,862 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-24 04:30:30,862 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-24 04:30:30,862 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-24 04:30:30,862 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-24 04:30:30,863 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-24 04:30:30,863 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-24 04:30:30,863 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-24 04:30:30,863 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-24 04:30:30,863 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-24 04:30:30,864 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-24 04:30:30,864 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-24 04:30:30,865 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-24 04:30:30,865 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-24 04:30:30,865 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-24 04:30:30,865 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-24 04:30:30,865 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-24 04:30:30,866 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-24 04:30:30,866 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-24 04:30:30,866 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-24 04:30:30,866 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-24 04:30:30,866 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-24 04:30:30,867 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-24 04:30:30,867 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-24 04:30:30,867 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-24 04:30:30,867 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-24 04:30:30,867 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-24 04:30:30,868 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-24 04:30:30,868 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-24 04:30:30,868 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-24 04:30:30,868 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-24 04:30:30,869 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-24 04:30:30,869 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-24 04:30:31,129 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-24 04:30:31,147 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-24 04:30:31,150 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-24 04:30:31,152 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-24 04:30:31,152 INFO L275 PluginConnector]: CDTParser initialized [2019-11-24 04:30:31,153 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench/ps4.c [2019-11-24 04:30:31,228 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/daa3d27fe/fd18453090334d43bfab4aacf82928fc/FLAG6787c6ec9 [2019-11-24 04:30:31,681 INFO L306 CDTParser]: Found 1 translation units. [2019-11-24 04:30:31,681 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench/ps4.c [2019-11-24 04:30:31,688 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/daa3d27fe/fd18453090334d43bfab4aacf82928fc/FLAG6787c6ec9 [2019-11-24 04:30:32,101 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/daa3d27fe/fd18453090334d43bfab4aacf82928fc [2019-11-24 04:30:32,111 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-24 04:30:32,114 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-24 04:30:32,115 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-24 04:30:32,115 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-24 04:30:32,118 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-24 04:30:32,119 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 04:30:32" (1/1) ... [2019-11-24 04:30:32,123 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a5f25ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:30:32, skipping insertion in model container [2019-11-24 04:30:32,123 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 04:30:32" (1/1) ... [2019-11-24 04:30:32,131 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-24 04:30:32,152 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-24 04:30:32,303 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 04:30:32,307 INFO L203 MainTranslator]: Completed pre-run [2019-11-24 04:30:32,326 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 04:30:32,340 INFO L208 MainTranslator]: Completed translation [2019-11-24 04:30:32,340 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:30:32 WrapperNode [2019-11-24 04:30:32,340 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-24 04:30:32,341 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-24 04:30:32,341 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-24 04:30:32,341 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-24 04:30:32,350 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:30:32" (1/1) ... [2019-11-24 04:30:32,355 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:30:32" (1/1) ... [2019-11-24 04:30:32,452 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-24 04:30:32,453 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-24 04:30:32,453 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-24 04:30:32,453 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-24 04:30:32,462 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:30:32" (1/1) ... [2019-11-24 04:30:32,462 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:30:32" (1/1) ... [2019-11-24 04:30:32,463 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:30:32" (1/1) ... [2019-11-24 04:30:32,463 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:30:32" (1/1) ... [2019-11-24 04:30:32,466 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:30:32" (1/1) ... [2019-11-24 04:30:32,470 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:30:32" (1/1) ... [2019-11-24 04:30:32,471 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:30:32" (1/1) ... [2019-11-24 04:30:32,473 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-24 04:30:32,473 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-24 04:30:32,473 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-24 04:30:32,473 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-24 04:30:32,474 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:30:32" (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 04:30:32,535 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-24 04:30:32,537 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-24 04:30:32,772 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-24 04:30:32,773 INFO L284 CfgBuilder]: Removed 11 assume(true) statements. [2019-11-24 04:30:32,774 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 04:30:32 BoogieIcfgContainer [2019-11-24 04:30:32,775 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-24 04:30:32,776 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-24 04:30:32,776 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-24 04:30:32,780 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-24 04:30:32,780 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 04:30:32" (1/3) ... [2019-11-24 04:30:32,781 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60b5dcfa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 04:30:32, skipping insertion in model container [2019-11-24 04:30:32,781 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:30:32" (2/3) ... [2019-11-24 04:30:32,782 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60b5dcfa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 04:30:32, skipping insertion in model container [2019-11-24 04:30:32,782 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 04:30:32" (3/3) ... [2019-11-24 04:30:32,784 INFO L109 eAbstractionObserver]: Analyzing ICFG ps4.c [2019-11-24 04:30:32,803 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-24 04:30:32,819 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2019-11-24 04:30:32,840 INFO L249 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-11-24 04:30:32,861 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-24 04:30:32,862 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-24 04:30:32,862 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-24 04:30:32,862 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-24 04:30:32,862 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-24 04:30:32,862 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-24 04:30:32,862 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-24 04:30:32,862 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-24 04:30:32,874 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2019-11-24 04:30:32,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-11-24 04:30:32,879 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:30:32,879 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-11-24 04:30:32,880 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 04:30:32,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:30:32,884 INFO L82 PathProgramCache]: Analyzing trace with hash 963340, now seen corresponding path program 1 times [2019-11-24 04:30:32,891 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:30:32,891 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447703201] [2019-11-24 04:30:32,891 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:30:32,963 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-24 04:30:32,963 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [523537583] [2019-11-24 04:30:32,964 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 04:30:32,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:30:32,997 WARN L253 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-24 04:30:33,002 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-24 04:30:33,078 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 04:30:33,078 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-24 04:30:33,142 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 04:30:33,143 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447703201] [2019-11-24 04:30:33,143 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-24 04:30:33,143 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [523537583] [2019-11-24 04:30:33,144 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-24 04:30:33,144 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2019-11-24 04:30:33,146 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390416515] [2019-11-24 04:30:33,150 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-24 04:30:33,151 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 04:30:33,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-24 04:30:33,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-24 04:30:33,168 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 6 states. [2019-11-24 04:30:33,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 04:30:33,363 INFO L93 Difference]: Finished difference Result 36 states and 48 transitions. [2019-11-24 04:30:33,364 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-24 04:30:33,366 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 4 [2019-11-24 04:30:33,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 04:30:33,378 INFO L225 Difference]: With dead ends: 36 [2019-11-24 04:30:33,378 INFO L226 Difference]: Without dead ends: 11 [2019-11-24 04:30:33,383 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2019-11-24 04:30:33,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2019-11-24 04:30:33,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2019-11-24 04:30:33,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2019-11-24 04:30:33,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2019-11-24 04:30:33,425 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 4 [2019-11-24 04:30:33,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 04:30:33,426 INFO L462 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2019-11-24 04:30:33,426 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-24 04:30:33,426 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2019-11-24 04:30:33,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-24 04:30:33,427 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:30:33,427 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2019-11-24 04:30:33,631 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-24 04:30:33,632 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 04:30:33,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:30:33,632 INFO L82 PathProgramCache]: Analyzing trace with hash -565940831, now seen corresponding path program 1 times [2019-11-24 04:30:33,633 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:30:33,634 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57903258] [2019-11-24 04:30:33,634 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:30:33,639 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-24 04:30:33,639 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1143225043] [2019-11-24 04:30:33,640 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 04:30:33,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:30:33,673 WARN L253 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 29 conjunts are in the unsatisfiable core [2019-11-24 04:30:33,675 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-24 04:30:33,839 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 04:30:33,866 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 04:30:33,868 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-24 04:30:33,956 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 04:30:36,121 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse5 (+ c_ULTIMATE.start_main_~y~0 1))) (let ((.cse1 (* .cse5 .cse5))) (let ((.cse3 (* .cse1 .cse5))) (let ((.cse0 (* .cse3 .cse5)) (.cse2 (* (* (+ (* c_ULTIMATE.start_main_~y~0 2) 2) .cse5) .cse5))) (or (not (= (mod (+ .cse0 .cse1 .cse2) 4) 0)) (not (= (div (+ .cse0 .cse2 .cse1) 4) (+ .cse3 c_ULTIMATE.start_main_~x~0))) (forall ((ULTIMATE.start_main_~k~0 Int)) (or (let ((.cse4 (+ c_ULTIMATE.start_main_~y~0 1))) (= (* .cse4 .cse4) (* ULTIMATE.start_main_~k~0 .cse4))) (< (+ c_ULTIMATE.start_main_~c~0 1) ULTIMATE.start_main_~k~0) (<= ULTIMATE.start_main_~k~0 c_ULTIMATE.start_main_~c~0)))))))) is different from false [2019-11-24 04:30:38,148 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse5 (+ c_ULTIMATE.start_main_~y~0 1))) (let ((.cse1 (* .cse5 .cse5))) (let ((.cse3 (* .cse1 .cse5))) (let ((.cse0 (* .cse3 .cse5)) (.cse2 (* (* (+ (* c_ULTIMATE.start_main_~y~0 2) 2) .cse5) .cse5))) (or (not (= (mod (+ .cse0 .cse1 .cse2) 4) 0)) (not (= (div (+ .cse0 .cse2 .cse1) 4) (+ .cse3 c_ULTIMATE.start_main_~x~0))) (forall ((ULTIMATE.start_main_~k~0 Int)) (or (let ((.cse4 (+ c_ULTIMATE.start_main_~y~0 1))) (= (* .cse4 .cse4) (* ULTIMATE.start_main_~k~0 .cse4))) (< (+ c_ULTIMATE.start_main_~c~0 1) ULTIMATE.start_main_~k~0) (<= ULTIMATE.start_main_~k~0 c_ULTIMATE.start_main_~c~0))) (= 0 c_ULTIMATE.start___VERIFIER_assert_~cond)))))) is different from false [2019-11-24 04:30:38,167 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 04:30:38,200 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse7 (+ c_ULTIMATE.start_main_~y~0 1))) (let ((.cse1 (* .cse7 .cse7))) (let ((.cse6 (* c_ULTIMATE.start_main_~y~0 2)) (.cse3 (* .cse1 .cse7))) (let ((.cse0 (* .cse3 .cse7)) (.cse2 (* (* (+ .cse6 2) .cse7) .cse7))) (or (not (= (mod (+ .cse0 .cse1 .cse2) 4) 0)) (not (= (div (+ .cse0 .cse2 .cse1) 4) (+ .cse3 c_ULTIMATE.start_main_~x~0))) (forall ((ULTIMATE.start_main_~k~0 Int)) (or (let ((.cse4 (+ c_ULTIMATE.start_main_~y~0 1))) (= (* .cse4 .cse4) (* ULTIMATE.start_main_~k~0 .cse4))) (< (+ c_ULTIMATE.start_main_~c~0 1) ULTIMATE.start_main_~k~0) (<= ULTIMATE.start_main_~k~0 c_ULTIMATE.start_main_~c~0))) (not (= (let ((.cse5 (* c_ULTIMATE.start_main_~y~0 c_ULTIMATE.start_main_~y~0))) (+ .cse5 (* (* .cse5 c_ULTIMATE.start_main_~y~0) c_ULTIMATE.start_main_~y~0) (* (* .cse6 c_ULTIMATE.start_main_~y~0) c_ULTIMATE.start_main_~y~0))) (* 4 c_ULTIMATE.start_main_~x~0)))))))) is different from false [2019-11-24 04:30:38,211 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2019-11-24 04:30:38,212 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57903258] [2019-11-24 04:30:38,212 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-24 04:30:38,212 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1143225043] [2019-11-24 04:30:38,213 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1722879430] [2019-11-24 04:30:38,234 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2019-11-24 04:30:38,234 INFO L166 IcfgInterpreter]: Building call graph [2019-11-24 04:30:38,241 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-24 04:30:38,248 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-24 04:30:38,249 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-24 04:30:39,211 WARN L192 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 283 DAG size of output: 280 [2019-11-24 04:30:39,549 WARN L192 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 349 DAG size of output: 346 [2019-11-24 04:30:39,852 WARN L192 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 340 DAG size of output: 337 [2019-11-24 04:30:40,112 WARN L192 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 343 [2019-11-24 04:30:40,329 WARN L192 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 344 DAG size of output: 344 [2019-11-24 04:30:40,586 WARN L192 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 351 [2019-11-24 04:30:40,804 WARN L192 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 352 DAG size of output: 351 [2019-11-24 04:30:41,010 WARN L192 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 357 [2019-11-24 04:30:41,214 WARN L192 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 358 DAG size of output: 357 [2019-11-24 04:30:41,409 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 363 [2019-11-24 04:30:41,618 WARN L192 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 364 DAG size of output: 362 [2019-11-24 04:30:41,801 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 367 [2019-11-24 04:30:41,910 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 368 DAG size of output: 368 [2019-11-24 04:30:42,181 WARN L192 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 472 DAG size of output: 470 [2019-11-24 04:30:42,451 WARN L192 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 464 DAG size of output: 461 [2019-11-24 04:30:42,759 WARN L192 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 466 [2019-11-24 04:30:42,982 WARN L192 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 467 DAG size of output: 466 [2019-11-24 04:30:43,282 WARN L192 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 473 [2019-11-24 04:30:43,468 WARN L192 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 474 DAG size of output: 473 [2019-11-24 04:30:43,708 WARN L192 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 480 [2019-11-24 04:30:43,865 WARN L192 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 481 DAG size of output: 480 [2019-11-24 04:30:44,402 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 487 [2019-11-24 04:30:44,540 WARN L192 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 488 DAG size of output: 487 [2019-11-24 04:30:44,783 WARN L192 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 494 [2019-11-24 04:30:44,929 WARN L192 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 495 DAG size of output: 495 [2019-11-24 04:30:45,274 WARN L192 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 655 DAG size of output: 651 [2019-11-24 04:30:45,590 WARN L192 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 643 DAG size of output: 642 [2019-11-24 04:30:46,026 WARN L192 SmtUtils]: Spent 370.00 ms on a formula simplification. DAG size of input: 800 DAG size of output: 795 [2019-11-24 04:30:46,571 WARN L192 SmtUtils]: Spent 392.00 ms on a formula simplification. DAG size of input: 788 DAG size of output: 783 [2019-11-24 04:30:47,719 WARN L192 SmtUtils]: Spent 926.00 ms on a formula simplification that was a NOOP. DAG size: 786 [2019-11-24 04:30:48,230 WARN L192 SmtUtils]: Spent 508.00 ms on a formula simplification. DAG size of input: 787 DAG size of output: 787 [2019-11-24 04:30:49,024 WARN L192 SmtUtils]: Spent 691.00 ms on a formula simplification. DAG size of input: 988 DAG size of output: 984 [2019-11-24 04:30:49,907 WARN L192 SmtUtils]: Spent 678.00 ms on a formula simplification. DAG size of input: 977 DAG size of output: 974 [2019-11-24 04:30:50,754 WARN L192 SmtUtils]: Spent 651.00 ms on a formula simplification that was a NOOP. DAG size: 979 [2019-11-24 04:30:51,436 WARN L192 SmtUtils]: Spent 678.00 ms on a formula simplification. DAG size of input: 980 DAG size of output: 980 [2019-11-24 04:30:52,813 WARN L192 SmtUtils]: Spent 1.12 s on a formula simplification. DAG size of input: 1227 DAG size of output: 1219 [2019-11-24 04:30:54,127 WARN L192 SmtUtils]: Spent 1.13 s on a formula simplification. DAG size of input: 1212 DAG size of output: 1209 [2019-11-24 04:30:55,607 WARN L192 SmtUtils]: Spent 1.21 s on a formula simplification that was a NOOP. DAG size: 1214 [2019-11-24 04:30:56,874 WARN L192 SmtUtils]: Spent 1.24 s on a formula simplification. DAG size of input: 1215 DAG size of output: 1215 [2019-11-24 04:30:58,886 WARN L192 SmtUtils]: Spent 1.90 s on a formula simplification. DAG size of input: 1498 DAG size of output: 1489 [2019-11-24 04:31:01,083 WARN L192 SmtUtils]: Spent 1.88 s on a formula simplification. DAG size of input: 1480 DAG size of output: 1479 [2019-11-24 04:31:04,881 WARN L192 SmtUtils]: Spent 3.59 s on a formula simplification. DAG size of input: 1874 DAG size of output: 1867 [2019-11-24 04:31:08,861 WARN L192 SmtUtils]: Spent 3.55 s on a formula simplification. DAG size of input: 1858 DAG size of output: 1853 [2019-11-24 04:31:13,345 WARN L192 SmtUtils]: Spent 3.82 s on a formula simplification that was a NOOP. DAG size: 1856 [2019-11-24 04:31:17,159 WARN L192 SmtUtils]: Spent 3.81 s on a formula simplification. DAG size of input: 1857 DAG size of output: 1856 [2019-11-24 04:31:21,397 WARN L192 SmtUtils]: Spent 3.71 s on a formula simplification that was a NOOP. DAG size: 1863 [2019-11-24 04:31:25,157 WARN L192 SmtUtils]: Spent 3.76 s on a formula simplification. DAG size of input: 1864 DAG size of output: 1863 [2019-11-24 04:31:29,416 WARN L192 SmtUtils]: Spent 3.72 s on a formula simplification that was a NOOP. DAG size: 1870 [2019-11-24 04:31:33,132 WARN L192 SmtUtils]: Spent 3.71 s on a formula simplification. DAG size of input: 1871 DAG size of output: 1871 [2019-11-24 04:31:40,594 WARN L192 SmtUtils]: Spent 7.23 s on a formula simplification. DAG size of input: 2359 DAG size of output: 2352 [2019-11-24 04:31:47,311 WARN L192 SmtUtils]: Spent 6.19 s on a formula simplification. DAG size of input: 2339 DAG size of output: 2336 [2019-11-24 04:31:54,434 WARN L192 SmtUtils]: Spent 6.40 s on a formula simplification that was a NOOP. DAG size: 2341 [2019-11-24 04:32:01,229 WARN L192 SmtUtils]: Spent 6.79 s on a formula simplification. DAG size of input: 2342 DAG size of output: 2341 [2019-11-24 04:32:09,464 WARN L192 SmtUtils]: Spent 7.39 s on a formula simplification that was a NOOP. DAG size: 2348