/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/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/nla-digbench/mannadiv.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-23 22:17:55,786 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-23 22:17:55,788 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-23 22:17:55,800 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-23 22:17:55,801 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-23 22:17:55,802 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-23 22:17:55,805 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-23 22:17:55,809 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-23 22:17:55,812 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-23 22:17:55,815 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-23 22:17:55,820 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-23 22:17:55,821 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-23 22:17:55,822 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-23 22:17:55,825 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-23 22:17:55,826 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-23 22:17:55,831 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-23 22:17:55,831 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-23 22:17:55,834 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-23 22:17:55,836 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-23 22:17:55,839 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-23 22:17:55,842 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-23 22:17:55,843 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-23 22:17:55,846 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-23 22:17:55,847 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-23 22:17:55,851 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-23 22:17:55,851 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-23 22:17:55,851 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-23 22:17:55,855 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-23 22:17:55,856 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-23 22:17:55,858 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-23 22:17:55,858 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-23 22:17:55,859 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-23 22:17:55,860 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-23 22:17:55,861 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-23 22:17:55,865 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-23 22:17:55,865 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-23 22:17:55,866 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-23 22:17:55,866 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-23 22:17:55,866 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-23 22:17:55,870 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-23 22:17:55,871 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-23 22:17:55,872 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 [2019-11-23 22:17:55,900 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-23 22:17:55,900 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-23 22:17:55,903 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-23 22:17:55,903 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-23 22:17:55,903 INFO L138 SettingsManager]: * Use SBE=true [2019-11-23 22:17:55,903 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-23 22:17:55,904 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-23 22:17:55,904 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-23 22:17:55,904 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-23 22:17:55,904 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-23 22:17:55,905 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-23 22:17:55,906 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-23 22:17:55,906 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-23 22:17:55,906 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-11-23 22:17:55,906 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-23 22:17:55,907 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-23 22:17:55,907 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-23 22:17:55,907 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-23 22:17:55,908 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-23 22:17:55,908 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-23 22:17:55,908 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-23 22:17:55,908 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-23 22:17:55,908 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-23 22:17:55,909 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-23 22:17:55,909 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-23 22:17:55,909 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-23 22:17:55,909 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-23 22:17:55,909 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-23 22:17:55,910 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-23 22:17:55,910 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-23 22:17:56,183 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-23 22:17:56,202 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-23 22:17:56,206 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-23 22:17:56,207 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-23 22:17:56,208 INFO L275 PluginConnector]: CDTParser initialized [2019-11-23 22:17:56,209 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench/mannadiv.c [2019-11-23 22:17:56,271 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be11efa40/2d8771ceb9694044bc02bc47501c6e2a/FLAG5d0b8dd7c [2019-11-23 22:17:56,717 INFO L306 CDTParser]: Found 1 translation units. [2019-11-23 22:17:56,718 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench/mannadiv.c [2019-11-23 22:17:56,724 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be11efa40/2d8771ceb9694044bc02bc47501c6e2a/FLAG5d0b8dd7c [2019-11-23 22:17:57,102 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be11efa40/2d8771ceb9694044bc02bc47501c6e2a [2019-11-23 22:17:57,116 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-23 22:17:57,118 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-23 22:17:57,119 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-23 22:17:57,119 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-23 22:17:57,123 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-23 22:17:57,124 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:17:57" (1/1) ... [2019-11-23 22:17:57,127 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@190dac61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:17:57, skipping insertion in model container [2019-11-23 22:17:57,127 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:17:57" (1/1) ... [2019-11-23 22:17:57,135 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-23 22:17:57,157 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-23 22:17:57,318 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-23 22:17:57,321 INFO L203 MainTranslator]: Completed pre-run [2019-11-23 22:17:57,336 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-23 22:17:57,348 INFO L208 MainTranslator]: Completed translation [2019-11-23 22:17:57,348 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:17:57 WrapperNode [2019-11-23 22:17:57,349 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-23 22:17:57,349 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-23 22:17:57,349 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-23 22:17:57,349 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-23 22:17:57,356 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:17:57" (1/1) ... [2019-11-23 22:17:57,362 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:17:57" (1/1) ... [2019-11-23 22:17:57,465 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-23 22:17:57,465 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-23 22:17:57,465 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-23 22:17:57,465 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-23 22:17:57,474 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:17:57" (1/1) ... [2019-11-23 22:17:57,474 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:17:57" (1/1) ... [2019-11-23 22:17:57,475 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:17:57" (1/1) ... [2019-11-23 22:17:57,475 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:17:57" (1/1) ... [2019-11-23 22:17:57,477 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:17:57" (1/1) ... [2019-11-23 22:17:57,482 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:17:57" (1/1) ... [2019-11-23 22:17:57,482 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:17:57" (1/1) ... [2019-11-23 22:17:57,484 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-23 22:17:57,484 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-23 22:17:57,484 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-23 22:17:57,485 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-23 22:17:57,485 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:17:57" (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 [2019-11-23 22:17:57,542 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-23 22:17:57,542 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-23 22:17:57,715 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-23 22:17:57,715 INFO L284 CfgBuilder]: Removed 9 assume(true) statements. [2019-11-23 22:17:57,718 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:17:57 BoogieIcfgContainer [2019-11-23 22:17:57,718 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-23 22:17:57,727 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-23 22:17:57,727 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-23 22:17:57,731 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-23 22:17:57,731 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 10:17:57" (1/3) ... [2019-11-23 22:17:57,732 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29292197 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:17:57, skipping insertion in model container [2019-11-23 22:17:57,733 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:17:57" (2/3) ... [2019-11-23 22:17:57,733 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29292197 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:17:57, skipping insertion in model container [2019-11-23 22:17:57,734 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:17:57" (3/3) ... [2019-11-23 22:17:57,747 INFO L109 eAbstractionObserver]: Analyzing ICFG mannadiv.c [2019-11-23 22:17:57,772 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-23 22:17:57,785 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2019-11-23 22:17:57,815 INFO L249 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2019-11-23 22:17:57,841 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-23 22:17:57,841 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-23 22:17:57,841 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-23 22:17:57,841 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-23 22:17:57,842 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-23 22:17:57,842 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-23 22:17:57,842 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-23 22:17:57,842 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-23 22:17:57,854 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states. [2019-11-23 22:17:57,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-11-23 22:17:57,859 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:17:57,860 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-11-23 22:17:57,860 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:17:57,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:17:57,865 INFO L82 PathProgramCache]: Analyzing trace with hash 963340, now seen corresponding path program 1 times [2019-11-23 22:17:57,872 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 22:17:57,872 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025893795] [2019-11-23 22:17:57,872 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:17:57,954 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-23 22:17:57,955 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1423551947] [2019-11-23 22:17:57,955 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 [2019-11-23 22:17:57,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:17:57,989 WARN L253 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 13 conjunts are in the unsatisfiable core [2019-11-23 22:17:57,994 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 22:17:58,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 22:17:58,076 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025893795] [2019-11-23 22:17:58,076 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-23 22:17:58,076 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1423551947] [2019-11-23 22:17:58,078 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-23 22:17:58,078 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-23 22:17:58,080 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243544326] [2019-11-23 22:17:58,085 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-23 22:17:58,085 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 22:17:58,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-23 22:17:58,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-23 22:17:58,103 INFO L87 Difference]: Start difference. First operand 15 states. Second operand 4 states. [2019-11-23 22:17:58,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:17:58,249 INFO L93 Difference]: Finished difference Result 42 states and 59 transitions. [2019-11-23 22:17:58,250 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-23 22:17:58,251 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2019-11-23 22:17:58,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:17:58,264 INFO L225 Difference]: With dead ends: 42 [2019-11-23 22:17:58,265 INFO L226 Difference]: Without dead ends: 20 [2019-11-23 22:17:58,271 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-23 22:17:58,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2019-11-23 22:17:58,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 13. [2019-11-23 22:17:58,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2019-11-23 22:17:58,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2019-11-23 22:17:58,317 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 4 [2019-11-23 22:17:58,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:17:58,317 INFO L462 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2019-11-23 22:17:58,317 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-23 22:17:58,319 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2019-11-23 22:17:58,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-23 22:17:58,319 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:17:58,320 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-23 22:17:58,523 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:17:58,524 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:17:58,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:17:58,525 INFO L82 PathProgramCache]: Analyzing trace with hash -1361018346, now seen corresponding path program 1 times [2019-11-23 22:17:58,525 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 22:17:58,526 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162654613] [2019-11-23 22:17:58,526 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:17:58,535 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-23 22:17:58,535 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [683999106] [2019-11-23 22:17:58,535 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 [2019-11-23 22:17:58,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:17:58,574 INFO L255 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 13 conjunts are in the unsatisfiable core [2019-11-23 22:17:58,575 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 22:17:58,645 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 22:17:58,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 22:17:58,661 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162654613] [2019-11-23 22:17:58,662 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-23 22:17:58,662 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [683999106] [2019-11-23 22:17:58,662 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-23 22:17:58,663 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-23 22:17:58,663 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127813743] [2019-11-23 22:17:58,665 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-23 22:17:58,665 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 22:17:58,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-23 22:17:58,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-23 22:17:58,666 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand 5 states. [2019-11-23 22:17:58,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:17:58,751 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2019-11-23 22:17:58,751 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-23 22:17:58,752 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2019-11-23 22:17:58,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:17:58,754 INFO L225 Difference]: With dead ends: 19 [2019-11-23 22:17:58,754 INFO L226 Difference]: Without dead ends: 15 [2019-11-23 22:17:58,756 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-11-23 22:17:58,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2019-11-23 22:17:58,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 14. [2019-11-23 22:17:58,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2019-11-23 22:17:58,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2019-11-23 22:17:58,761 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 7 [2019-11-23 22:17:58,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:17:58,762 INFO L462 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2019-11-23 22:17:58,762 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-23 22:17:58,762 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2019-11-23 22:17:58,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-23 22:17:58,763 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:17:58,763 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2019-11-23 22:17:58,963 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:17:58,964 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:17:58,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:17:58,964 INFO L82 PathProgramCache]: Analyzing trace with hash 759715009, now seen corresponding path program 1 times [2019-11-23 22:17:58,965 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 22:17:58,965 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785853389] [2019-11-23 22:17:58,965 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:17:58,972 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-23 22:17:58,973 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2129036498] [2019-11-23 22:17:58,973 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) [2019-11-23 22:17:58,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:17:59,001 WARN L253 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 21 conjunts are in the unsatisfiable core [2019-11-23 22:17:59,002 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 22:17:59,039 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 22:17:59,040 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785853389] [2019-11-23 22:17:59,040 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-23 22:17:59,040 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2129036498] [2019-11-23 22:17:59,041 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-11-23 22:17:59,041 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2019-11-23 22:17:59,041 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553500187] [2019-11-23 22:17:59,042 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-23 22:17:59,042 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 22:17:59,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-23 22:17:59,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-23 22:17:59,043 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand 5 states. [2019-11-23 22:17:59,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:17:59,149 INFO L93 Difference]: Finished difference Result 34 states and 39 transitions. [2019-11-23 22:17:59,150 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-23 22:17:59,150 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2019-11-23 22:17:59,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:17:59,151 INFO L225 Difference]: With dead ends: 34 [2019-11-23 22:17:59,151 INFO L226 Difference]: Without dead ends: 24 [2019-11-23 22:17:59,152 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-11-23 22:17:59,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2019-11-23 22:17:59,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 19. [2019-11-23 22:17:59,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2019-11-23 22:17:59,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 22 transitions. [2019-11-23 22:17:59,157 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 22 transitions. Word has length 8 [2019-11-23 22:17:59,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:17:59,158 INFO L462 AbstractCegarLoop]: Abstraction has 19 states and 22 transitions. [2019-11-23 22:17:59,158 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-23 22:17:59,158 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 22 transitions. [2019-11-23 22:17:59,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-23 22:17:59,159 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:17:59,159 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2019-11-23 22:17:59,361 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:17:59,362 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:17:59,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:17:59,363 INFO L82 PathProgramCache]: Analyzing trace with hash 759774591, now seen corresponding path program 1 times [2019-11-23 22:17:59,363 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 22:17:59,364 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185630081] [2019-11-23 22:17:59,365 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:17:59,376 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-23 22:17:59,376 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [934286172] [2019-11-23 22:17:59,377 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:17:59,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:17:59,403 INFO L255 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 17 conjunts are in the unsatisfiable core [2019-11-23 22:17:59,404 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 22:17:59,462 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 22:17:59,463 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185630081] [2019-11-23 22:17:59,463 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-23 22:17:59,463 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [934286172] [2019-11-23 22:17:59,464 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-11-23 22:17:59,464 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2019-11-23 22:17:59,464 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100916040] [2019-11-23 22:17:59,464 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-23 22:17:59,465 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 22:17:59,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-23 22:17:59,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-23 22:17:59,465 INFO L87 Difference]: Start difference. First operand 19 states and 22 transitions. Second operand 5 states. [2019-11-23 22:17:59,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:17:59,568 INFO L93 Difference]: Finished difference Result 30 states and 34 transitions. [2019-11-23 22:17:59,569 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-23 22:17:59,569 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2019-11-23 22:17:59,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:17:59,570 INFO L225 Difference]: With dead ends: 30 [2019-11-23 22:17:59,570 INFO L226 Difference]: Without dead ends: 28 [2019-11-23 22:17:59,571 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-11-23 22:17:59,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2019-11-23 22:17:59,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 21. [2019-11-23 22:17:59,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-11-23 22:17:59,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 24 transitions. [2019-11-23 22:17:59,580 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 24 transitions. Word has length 8 [2019-11-23 22:17:59,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:17:59,580 INFO L462 AbstractCegarLoop]: Abstraction has 21 states and 24 transitions. [2019-11-23 22:17:59,580 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-23 22:17:59,581 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions. [2019-11-23 22:17:59,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-23 22:17:59,582 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:17:59,583 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 22:17:59,783 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:17:59,784 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:17:59,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:17:59,785 INFO L82 PathProgramCache]: Analyzing trace with hash -1802926015, now seen corresponding path program 1 times [2019-11-23 22:17:59,785 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 22:17:59,786 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741889018] [2019-11-23 22:17:59,786 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:17:59,797 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-23 22:17:59,798 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2138019554] [2019-11-23 22:17:59,799 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:17:59,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:17:59,825 INFO L255 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 14 conjunts are in the unsatisfiable core [2019-11-23 22:17:59,826 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 22:17:59,865 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 22:17:59,900 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-23 22:17:59,900 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741889018] [2019-11-23 22:17:59,900 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-23 22:17:59,901 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2138019554] [2019-11-23 22:17:59,901 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-23 22:17:59,901 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-23 22:17:59,901 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674040111] [2019-11-23 22:17:59,902 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-23 22:17:59,902 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 22:17:59,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-23 22:17:59,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2019-11-23 22:17:59,902 INFO L87 Difference]: Start difference. First operand 21 states and 24 transitions. Second operand 7 states. [2019-11-23 22:18:00,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:18:00,001 INFO L93 Difference]: Finished difference Result 21 states and 24 transitions. [2019-11-23 22:18:00,002 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-23 22:18:00,002 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 11 [2019-11-23 22:18:00,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:18:00,002 INFO L225 Difference]: With dead ends: 21 [2019-11-23 22:18:00,002 INFO L226 Difference]: Without dead ends: 0 [2019-11-23 22:18:00,003 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2019-11-23 22:18:00,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-23 22:18:00,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-23 22:18:00,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-23 22:18:00,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-23 22:18:00,004 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2019-11-23 22:18:00,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:18:00,004 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-23 22:18:00,004 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-23 22:18:00,005 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-23 22:18:00,005 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-23 22:18:00,208 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:18:00,212 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-23 22:18:00,307 INFO L440 ceAbstractionStarter]: At program point L35-2(lines 30 43) the Hoare annotation is: (let ((.cse0 (<= 0 ULTIMATE.start_main_~x1~0))) (or (and .cse0 (= ULTIMATE.start_main_~y2~0 0) (= ULTIMATE.start_main_~y1~0 0) (= ULTIMATE.start_main_~x1~0 ULTIMATE.start_main_~y3~0)) (and (= ULTIMATE.start_main_~x1~0 (+ ULTIMATE.start_main_~y2~0 ULTIMATE.start_main_~y3~0 (* ULTIMATE.start_main_~y1~0 ULTIMATE.start_main_~x2~0))) .cse0 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)))) [2019-11-23 22:18:00,307 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-23 22:18:00,308 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2019-11-23 22:18:00,308 INFO L444 ceAbstractionStarter]: For program point L11(lines 11 14) no Hoare annotation was computed. [2019-11-23 22:18:00,308 INFO L440 ceAbstractionStarter]: At program point L11-2(line 33) the Hoare annotation is: (and (= ULTIMATE.start_main_~x1~0 (+ ULTIMATE.start_main_~y2~0 ULTIMATE.start_main_~y3~0 (* ULTIMATE.start_main_~y1~0 ULTIMATE.start_main_~x2~0))) (<= 0 ULTIMATE.start_main_~x1~0) (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) [2019-11-23 22:18:00,308 INFO L444 ceAbstractionStarter]: For program point L11-3(lines 11 14) no Hoare annotation was computed. [2019-11-23 22:18:00,308 INFO L447 ceAbstractionStarter]: At program point L11-5(lines 10 16) the Hoare annotation is: true [2019-11-23 22:18:00,308 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-23 22:18:00,308 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-23 22:18:00,309 INFO L444 ceAbstractionStarter]: For program point L30-2(lines 30 43) no Hoare annotation was computed. [2019-11-23 22:18:00,309 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2019-11-23 22:18:00,309 INFO L447 ceAbstractionStarter]: At program point L45(lines 17 46) the Hoare annotation is: true [2019-11-23 22:18:00,309 INFO L444 ceAbstractionStarter]: For program point L12(lines 12 13) no Hoare annotation was computed. [2019-11-23 22:18:00,309 INFO L444 ceAbstractionStarter]: For program point L12-1(lines 12 13) no Hoare annotation was computed. [2019-11-23 22:18:00,309 INFO L444 ceAbstractionStarter]: For program point L35(lines 35 42) no Hoare annotation was computed. [2019-11-23 22:18:00,337 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 10:18:00 BoogieIcfgContainer [2019-11-23 22:18:00,337 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-23 22:18:00,346 INFO L168 Benchmark]: Toolchain (without parser) took 3221.12 ms. Allocated memory was 146.3 MB in the beginning and 232.8 MB in the end (delta: 86.5 MB). Free memory was 102.2 MB in the beginning and 150.3 MB in the end (delta: -48.1 MB). Peak memory consumption was 38.4 MB. Max. memory is 7.1 GB. [2019-11-23 22:18:00,347 INFO L168 Benchmark]: CDTParser took 0.48 ms. Allocated memory is still 146.3 MB. Free memory was 121.4 MB in the beginning and 121.1 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2019-11-23 22:18:00,348 INFO L168 Benchmark]: CACSL2BoogieTranslator took 230.05 ms. Allocated memory is still 146.3 MB. Free memory was 102.0 MB in the beginning and 92.3 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. [2019-11-23 22:18:00,349 INFO L168 Benchmark]: Boogie Procedure Inliner took 115.70 ms. Allocated memory was 146.3 MB in the beginning and 203.9 MB in the end (delta: 57.7 MB). Free memory was 92.3 MB in the beginning and 183.2 MB in the end (delta: -90.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 7.1 GB. [2019-11-23 22:18:00,350 INFO L168 Benchmark]: Boogie Preprocessor took 18.87 ms. Allocated memory is still 203.9 MB. Free memory was 183.2 MB in the beginning and 181.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2019-11-23 22:18:00,353 INFO L168 Benchmark]: RCFGBuilder took 233.97 ms. Allocated memory is still 203.9 MB. Free memory was 181.5 MB in the beginning and 170.4 MB in the end (delta: 11.2 MB). Peak memory consumption was 11.2 MB. Max. memory is 7.1 GB. [2019-11-23 22:18:00,353 INFO L168 Benchmark]: TraceAbstraction took 2609.97 ms. Allocated memory was 203.9 MB in the beginning and 232.8 MB in the end (delta: 28.8 MB). Free memory was 169.8 MB in the beginning and 150.3 MB in the end (delta: 19.4 MB). Peak memory consumption was 48.3 MB. Max. memory is 7.1 GB. [2019-11-23 22:18:00,357 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.48 ms. Allocated memory is still 146.3 MB. Free memory was 121.4 MB in the beginning and 121.1 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 230.05 ms. Allocated memory is still 146.3 MB. Free memory was 102.0 MB in the beginning and 92.3 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 115.70 ms. Allocated memory was 146.3 MB in the beginning and 203.9 MB in the end (delta: 57.7 MB). Free memory was 92.3 MB in the beginning and 183.2 MB in the end (delta: -90.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 18.87 ms. Allocated memory is still 203.9 MB. Free memory was 183.2 MB in the beginning and 181.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 233.97 ms. Allocated memory is still 203.9 MB. Free memory was 181.5 MB in the beginning and 170.4 MB in the end (delta: 11.2 MB). Peak memory consumption was 11.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2609.97 ms. Allocated memory was 203.9 MB in the beginning and 232.8 MB in the end (delta: 28.8 MB). Free memory was 169.8 MB in the beginning and 150.3 MB in the end (delta: 19.4 MB). Peak memory consumption was 48.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 13]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 13]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 30]: Loop Invariant Derived loop invariant: (((0 <= x1 && y2 == 0) && y1 == 0) && x1 == y3) || ((x1 == y2 + y3 + y1 * x2 && 0 <= x1) && 1 == cond) - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 33]: Loop Invariant Derived loop invariant: (x1 == y2 + y3 + y1 * x2 && 0 <= x1) && 1 == cond - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 15 locations, 2 error locations. Result: SAFE, OverallTime: 2.4s, OverallIterations: 5, TraceHistogramMax: 2, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 32 SDtfs, 47 SDslu, 68 SDs, 0 SdLazy, 137 SolverSat, 31 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 42 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 20 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 15 NumberOfFragments, 46 HoareAnnotationTreeSize, 4 FomulaSimplifications, 112 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 11 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 38 NumberOfCodeBlocks, 38 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 33 ConstructedInterpolants, 0 QuantifiedInterpolants, 2122 SizeOfPredicates, 37 NumberOfNonLiveVariables, 178 ConjunctsInSsa, 78 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 3/7 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...