/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/ps3.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-23 22:18:02,460 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-23 22:18:02,462 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-23 22:18:02,474 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-23 22:18:02,474 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-23 22:18:02,475 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-23 22:18:02,476 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-23 22:18:02,478 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-23 22:18:02,480 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-23 22:18:02,481 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-23 22:18:02,481 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-23 22:18:02,483 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-23 22:18:02,483 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-23 22:18:02,484 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-23 22:18:02,485 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-23 22:18:02,486 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-23 22:18:02,487 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-23 22:18:02,488 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-23 22:18:02,489 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-23 22:18:02,491 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-23 22:18:02,493 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-23 22:18:02,494 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-23 22:18:02,495 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-23 22:18:02,495 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-23 22:18:02,498 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-23 22:18:02,507 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 22:18:02,521 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-23 22:18:02,522 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-23 22:18:02,523 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-23 22:18:02,523 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-23 22:18:02,523 INFO L138 SettingsManager]: * Use SBE=true [2019-11-23 22:18:02,523 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-23 22:18:02,524 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-23 22:18:02,524 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-23 22:18:02,524 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-23 22:18:02,524 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-23 22:18:02,524 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-23 22:18:02,524 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-23 22:18:02,525 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-23 22:18:02,525 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-11-23 22:18:02,525 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-23 22:18:02,525 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-23 22:18:02,525 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-23 22:18:02,526 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-23 22:18:02,526 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-23 22:18:02,526 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-23 22:18:02,526 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-23 22:18:02,526 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-23 22:18:02,527 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-23 22:18:02,527 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-23 22:18:02,527 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-23 22:18:02,527 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-23 22:18:02,528 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-23 22:18:02,528 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-23 22:18:02,528 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-23 22:18:02,528 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-23 22:18:02,793 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-23 22:18:02,813 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-23 22:18:02,817 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-23 22:18:02,819 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-23 22:18:02,819 INFO L275 PluginConnector]: CDTParser initialized [2019-11-23 22:18:02,820 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench/ps3.c [2019-11-23 22:18:02,905 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/99d8016cc/38f2be0f83294867b42310058451addf/FLAGb94f4dec4 [2019-11-23 22:18:03,357 INFO L306 CDTParser]: Found 1 translation units. [2019-11-23 22:18:03,358 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench/ps3.c [2019-11-23 22:18:03,365 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/99d8016cc/38f2be0f83294867b42310058451addf/FLAGb94f4dec4 [2019-11-23 22:18:03,738 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/99d8016cc/38f2be0f83294867b42310058451addf [2019-11-23 22:18:03,749 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-23 22:18:03,753 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-23 22:18:03,756 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-23 22:18:03,756 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-23 22:18:03,759 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-23 22:18:03,760 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:18:03" (1/1) ... [2019-11-23 22:18:03,763 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ea19e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:18:03, skipping insertion in model container [2019-11-23 22:18:03,763 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:18:03" (1/1) ... [2019-11-23 22:18:03,771 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-23 22:18:03,789 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-23 22:18:03,956 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-23 22:18:03,960 INFO L203 MainTranslator]: Completed pre-run [2019-11-23 22:18:03,974 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-23 22:18:03,985 INFO L208 MainTranslator]: Completed translation [2019-11-23 22:18:03,986 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:18:03 WrapperNode [2019-11-23 22:18:03,986 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-23 22:18:03,987 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-23 22:18:03,987 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-23 22:18:03,987 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-23 22:18:03,994 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:18:03" (1/1) ... [2019-11-23 22:18:03,999 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:18:03" (1/1) ... [2019-11-23 22:18:04,088 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-23 22:18:04,089 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-23 22:18:04,089 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-23 22:18:04,089 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-23 22:18:04,098 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:18:03" (1/1) ... [2019-11-23 22:18:04,098 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:18:03" (1/1) ... [2019-11-23 22:18:04,099 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:18:03" (1/1) ... [2019-11-23 22:18:04,099 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:18:03" (1/1) ... [2019-11-23 22:18:04,102 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:18:03" (1/1) ... [2019-11-23 22:18:04,106 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:18:03" (1/1) ... [2019-11-23 22:18:04,107 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:18:03" (1/1) ... [2019-11-23 22:18:04,108 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-23 22:18:04,109 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-23 22:18:04,109 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-23 22:18:04,109 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-23 22:18:04,110 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:18:03" (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 22:18:04,165 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-23 22:18:04,165 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-23 22:18:04,331 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-23 22:18:04,331 INFO L284 CfgBuilder]: Removed 9 assume(true) statements. [2019-11-23 22:18:04,334 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:18:04 BoogieIcfgContainer [2019-11-23 22:18:04,334 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-23 22:18:04,336 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-23 22:18:04,336 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-23 22:18:04,340 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-23 22:18:04,341 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 10:18:03" (1/3) ... [2019-11-23 22:18:04,342 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@653085dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:18:04, skipping insertion in model container [2019-11-23 22:18:04,342 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:18:03" (2/3) ... [2019-11-23 22:18:04,343 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@653085dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:18:04, skipping insertion in model container [2019-11-23 22:18:04,343 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:18:04" (3/3) ... [2019-11-23 22:18:04,345 INFO L109 eAbstractionObserver]: Analyzing ICFG ps3.c [2019-11-23 22:18:04,354 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-23 22:18:04,360 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2019-11-23 22:18:04,369 INFO L249 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2019-11-23 22:18:04,391 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-23 22:18:04,391 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-23 22:18:04,392 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-23 22:18:04,392 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-23 22:18:04,392 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-23 22:18:04,392 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-23 22:18:04,392 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-23 22:18:04,392 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-23 22:18:04,404 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2019-11-23 22:18:04,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-11-23 22:18:04,408 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:18:04,409 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-11-23 22:18:04,410 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:18:04,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:18:04,415 INFO L82 PathProgramCache]: Analyzing trace with hash 963340, now seen corresponding path program 1 times [2019-11-23 22:18:04,424 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 22:18:04,424 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389928183] [2019-11-23 22:18:04,425 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:18:04,498 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-23 22:18:04,498 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1647702143] [2019-11-23 22:18:04,499 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 22:18:04,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:18:04,541 WARN L253 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-23 22:18:04,546 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 22:18:04,630 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 22:18:04,631 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389928183] [2019-11-23 22:18:04,634 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-23 22:18:04,634 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1647702143] [2019-11-23 22:18:04,636 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-23 22:18:04,637 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-23 22:18:04,639 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074140629] [2019-11-23 22:18:04,643 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-23 22:18:04,644 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 22:18:04,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-23 22:18:04,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-23 22:18:04,690 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 4 states. [2019-11-23 22:18:04,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:18:04,937 INFO L93 Difference]: Finished difference Result 37 states and 51 transitions. [2019-11-23 22:18:04,937 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-23 22:18:04,938 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2019-11-23 22:18:04,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:18:04,946 INFO L225 Difference]: With dead ends: 37 [2019-11-23 22:18:04,947 INFO L226 Difference]: Without dead ends: 14 [2019-11-23 22:18:04,950 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 22:18:04,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2019-11-23 22:18:04,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 13. [2019-11-23 22:18:04,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2019-11-23 22:18:04,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2019-11-23 22:18:04,979 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 4 [2019-11-23 22:18:04,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:18:04,980 INFO L462 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2019-11-23 22:18:04,980 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-23 22:18:04,980 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2019-11-23 22:18:04,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-23 22:18:04,981 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:18:04,981 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2019-11-23 22:18:05,182 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:18:05,182 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:18:05,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:18:05,183 INFO L82 PathProgramCache]: Analyzing trace with hash -1360983589, now seen corresponding path program 1 times [2019-11-23 22:18:05,184 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 22:18:05,185 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777439517] [2019-11-23 22:18:05,185 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:18:05,190 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-23 22:18:05,190 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [753109007] [2019-11-23 22:18:05,191 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) [2019-11-23 22:18:05,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:18:05,223 WARN L253 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 19 conjunts are in the unsatisfiable core [2019-11-23 22:18:05,225 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 22:18:05,326 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 22:18:05,326 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777439517] [2019-11-23 22:18:05,327 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-23 22:18:05,327 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [753109007] [2019-11-23 22:18:05,327 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-11-23 22:18:05,327 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2019-11-23 22:18:05,328 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738852119] [2019-11-23 22:18:05,331 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-23 22:18:05,331 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 22:18:05,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-23 22:18:05,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-23 22:18:05,333 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 6 states. [2019-11-23 22:18:05,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:18:05,411 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2019-11-23 22:18:05,411 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-23 22:18:05,411 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 7 [2019-11-23 22:18:05,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:18:05,412 INFO L225 Difference]: With dead ends: 23 [2019-11-23 22:18:05,413 INFO L226 Difference]: Without dead ends: 17 [2019-11-23 22:18:05,414 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-11-23 22:18:05,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2019-11-23 22:18:05,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 16. [2019-11-23 22:18:05,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-11-23 22:18:05,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2019-11-23 22:18:05,420 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 7 [2019-11-23 22:18:05,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:18:05,420 INFO L462 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2019-11-23 22:18:05,420 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-23 22:18:05,420 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2019-11-23 22:18:05,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-23 22:18:05,421 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:18:05,421 INFO L410 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1] [2019-11-23 22:18:05,625 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:18:05,625 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:18:05,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:18:05,626 INFO L82 PathProgramCache]: Analyzing trace with hash -565900116, now seen corresponding path program 2 times [2019-11-23 22:18:05,626 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 22:18:05,627 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652604377] [2019-11-23 22:18:05,627 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:18:05,632 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-23 22:18:05,632 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [454717850] [2019-11-23 22:18:05,633 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:18:05,668 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-23 22:18:05,668 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-23 22:18:05,669 WARN L253 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 26 conjunts are in the unsatisfiable core [2019-11-23 22:18:05,671 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 22:18:05,726 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 22:18:07,788 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse2 (+ c_ULTIMATE.start_main_~y~0 (- 1)))) (let ((.cse0 (* (+ (* c_ULTIMATE.start_main_~y~0 3) (- 3)) .cse2)) (.cse1 (* (* (+ (* c_ULTIMATE.start_main_~y~0 2) (- 2)) .cse2) .cse2))) (and (<= c_ULTIMATE.start_main_~x~0 (+ (* c_ULTIMATE.start_main_~y~0 c_ULTIMATE.start_main_~y~0) (div (+ .cse0 .cse1 c_ULTIMATE.start_main_~y~0 (- 1)) 6))) (= 0 (mod (+ .cse0 .cse1 c_ULTIMATE.start_main_~y~0 5) 6)) (= 1 c_ULTIMATE.start_main_~y~0)))) is different from true [2019-11-23 22:18:09,829 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse4 (* c_ULTIMATE.start_main_~y~0 2)) (.cse3 (* c_ULTIMATE.start_main_~y~0 3)) (.cse5 (+ c_ULTIMATE.start_main_~y~0 (- 1)))) (let ((.cse0 (* (+ .cse3 (- 3)) .cse5)) (.cse1 (* (* (+ .cse4 (- 2)) .cse5) .cse5))) (and (<= c_ULTIMATE.start_main_~x~0 (+ (* c_ULTIMATE.start_main_~y~0 c_ULTIMATE.start_main_~y~0) (div (+ .cse0 .cse1 c_ULTIMATE.start_main_~y~0 (- 1)) 6))) (= 0 (mod (+ .cse0 .cse1 c_ULTIMATE.start_main_~y~0 5) 6)) (let ((.cse2 (= (+ (* .cse3 c_ULTIMATE.start_main_~y~0) c_ULTIMATE.start_main_~y~0 (* (* .cse4 c_ULTIMATE.start_main_~y~0) c_ULTIMATE.start_main_~y~0)) (* 6 c_ULTIMATE.start_main_~x~0)))) (or (and (= 1 c_ULTIMATE.start___VERIFIER_assert_~cond) .cse2) (and (not .cse2) (= 0 c_ULTIMATE.start___VERIFIER_assert_~cond)))) (= 1 c_ULTIMATE.start_main_~y~0)))) is different from true [2019-11-23 22:18:09,834 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 22:18:09,904 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 4 not checked. [2019-11-23 22:18:09,905 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652604377] [2019-11-23 22:18:09,905 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-23 22:18:09,905 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [454717850] [2019-11-23 22:18:09,906 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-11-23 22:18:09,906 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2019-11-23 22:18:09,906 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351310942] [2019-11-23 22:18:09,907 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-23 22:18:09,907 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 22:18:09,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-23 22:18:09,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=43, Unknown=2, NotChecked=26, Total=90 [2019-11-23 22:18:09,908 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 10 states. [2019-11-23 22:18:12,106 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse7 (* c_ULTIMATE.start_main_~y~0 2)) (.cse6 (* c_ULTIMATE.start_main_~y~0 3)) (.cse8 (+ c_ULTIMATE.start_main_~y~0 (- 1)))) (let ((.cse0 (* (+ .cse6 (- 3)) .cse8)) (.cse1 (* (* (+ .cse7 (- 2)) .cse8) .cse8)) (.cse2 (= 1 c_ULTIMATE.start___VERIFIER_assert_~cond)) (.cse5 (* 6 c_ULTIMATE.start_main_~x~0)) (.cse4 (+ (* .cse6 c_ULTIMATE.start_main_~y~0) c_ULTIMATE.start_main_~y~0 (* (* .cse7 c_ULTIMATE.start_main_~y~0) c_ULTIMATE.start_main_~y~0)))) (and (<= c_ULTIMATE.start_main_~x~0 (+ (* c_ULTIMATE.start_main_~y~0 c_ULTIMATE.start_main_~y~0) (div (+ .cse0 .cse1 c_ULTIMATE.start_main_~y~0 (- 1)) 6))) (= 0 (mod (+ .cse0 .cse1 c_ULTIMATE.start_main_~y~0 5) 6)) .cse2 (let ((.cse3 (= .cse4 .cse5))) (or (and .cse2 .cse3) (and (not .cse3) (= 0 c_ULTIMATE.start___VERIFIER_assert_~cond)))) (= c_ULTIMATE.start_main_~y~0 1) (= 1 c_ULTIMATE.start_main_~y~0) (= .cse5 .cse4)))) is different from true [2019-11-23 22:18:12,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:18:12,208 INFO L93 Difference]: Finished difference Result 26 states and 26 transitions. [2019-11-23 22:18:12,208 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-23 22:18:12,209 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 10 [2019-11-23 22:18:12,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:18:12,209 INFO L225 Difference]: With dead ends: 26 [2019-11-23 22:18:12,209 INFO L226 Difference]: Without dead ends: 20 [2019-11-23 22:18:12,210 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=35, Invalid=84, Unknown=3, NotChecked=60, Total=182 [2019-11-23 22:18:12,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2019-11-23 22:18:12,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 19. [2019-11-23 22:18:12,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2019-11-23 22:18:12,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2019-11-23 22:18:12,215 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 10 [2019-11-23 22:18:12,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:18:12,215 INFO L462 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2019-11-23 22:18:12,215 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-23 22:18:12,215 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2019-11-23 22:18:12,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-23 22:18:12,216 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:18:12,216 INFO L410 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1] [2019-11-23 22:18:12,425 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:18:12,425 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:18:12,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:18:12,426 INFO L82 PathProgramCache]: Analyzing trace with hash -978793413, now seen corresponding path program 3 times [2019-11-23 22:18:12,427 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 22:18:12,427 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592713646] [2019-11-23 22:18:12,428 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:18:12,432 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-23 22:18:12,432 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [528465085] [2019-11-23 22:18:12,433 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 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 22:18:12,458 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-11-23 22:18:12,458 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-23 22:18:12,459 WARN L253 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 24 conjunts are in the unsatisfiable core [2019-11-23 22:18:12,461 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 22:18:12,504 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 22:18:12,628 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 22:18:12,638 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-23 22:18:12,639 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592713646] [2019-11-23 22:18:12,639 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-23 22:18:12,640 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [528465085] [2019-11-23 22:18:12,640 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-11-23 22:18:12,640 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2019-11-23 22:18:12,640 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444098730] [2019-11-23 22:18:12,641 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-23 22:18:12,642 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 22:18:12,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-23 22:18:12,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-11-23 22:18:12,642 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 6 states. [2019-11-23 22:18:12,887 WARN L192 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 17 [2019-11-23 22:18:12,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:18:12,916 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2019-11-23 22:18:12,916 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-23 22:18:12,916 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2019-11-23 22:18:12,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:18:12,917 INFO L225 Difference]: With dead ends: 19 [2019-11-23 22:18:12,917 INFO L226 Difference]: Without dead ends: 0 [2019-11-23 22:18:12,917 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-11-23 22:18:12,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-23 22:18:12,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-23 22:18:12,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-23 22:18:12,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-23 22:18:12,920 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2019-11-23 22:18:12,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:18:12,920 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-23 22:18:12,920 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-23 22:18:12,920 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-23 22:18:12,920 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-23 22:18:13,121 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:18:13,125 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-23 22:18:13,213 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-23 22:18:13,214 INFO L447 ceAbstractionStarter]: At program point L31(lines 12 32) the Hoare annotation is: true [2019-11-23 22:18:13,214 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 7) no Hoare annotation was computed. [2019-11-23 22:18:13,214 INFO L444 ceAbstractionStarter]: For program point L5(lines 5 8) no Hoare annotation was computed. [2019-11-23 22:18:13,214 INFO L440 ceAbstractionStarter]: At program point L5-2(lines 23 24) the Hoare annotation is: (and (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= (* ULTIMATE.start_main_~x~0 6) (+ (* (* ULTIMATE.start_main_~y~0 3) ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~y~0 (* (* (* ULTIMATE.start_main_~y~0 2) ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~y~0)))) [2019-11-23 22:18:13,214 INFO L444 ceAbstractionStarter]: For program point L5-3(lines 5 8) no Hoare annotation was computed. [2019-11-23 22:18:13,215 INFO L447 ceAbstractionStarter]: At program point L5-5(lines 4 10) the Hoare annotation is: true [2019-11-23 22:18:13,215 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-23 22:18:13,215 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-23 22:18:13,215 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 7) no Hoare annotation was computed. [2019-11-23 22:18:13,215 INFO L440 ceAbstractionStarter]: At program point L20-2(lines 20 29) the Hoare annotation is: (let ((.cse0 (= (* ULTIMATE.start_main_~x~0 6) (+ (* (* ULTIMATE.start_main_~y~0 3) ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~y~0 (* (* (* ULTIMATE.start_main_~y~0 2) ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~y~0))))) (or (and (= ULTIMATE.start_main_~y~0 0) .cse0) (and (= 1 ULTIMATE.start___VERIFIER_assert_~cond) .cse0))) [2019-11-23 22:18:13,215 INFO L444 ceAbstractionStarter]: For program point L20-3(lines 20 29) no Hoare annotation was computed. [2019-11-23 22:18:13,216 INFO L444 ceAbstractionStarter]: For program point L6(lines 6 7) no Hoare annotation was computed. [2019-11-23 22:18:13,216 INFO L444 ceAbstractionStarter]: For program point L6-1(lines 6 7) no Hoare annotation was computed. [2019-11-23 22:18:13,232 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 10:18:13 BoogieIcfgContainer [2019-11-23 22:18:13,232 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-23 22:18:13,234 INFO L168 Benchmark]: Toolchain (without parser) took 9483.13 ms. Allocated memory was 137.9 MB in the beginning and 233.3 MB in the end (delta: 95.4 MB). Free memory was 101.1 MB in the beginning and 165.6 MB in the end (delta: -64.5 MB). Peak memory consumption was 30.9 MB. Max. memory is 7.1 GB. [2019-11-23 22:18:13,235 INFO L168 Benchmark]: CDTParser took 0.77 ms. Allocated memory is still 137.9 MB. Free memory is still 119.6 MB. There was no memory consumed. Max. memory is 7.1 GB. [2019-11-23 22:18:13,236 INFO L168 Benchmark]: CACSL2BoogieTranslator took 230.76 ms. Allocated memory is still 137.9 MB. Free memory was 100.9 MB in the beginning and 91.4 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. [2019-11-23 22:18:13,237 INFO L168 Benchmark]: Boogie Procedure Inliner took 101.80 ms. Allocated memory was 137.9 MB in the beginning and 201.3 MB in the end (delta: 63.4 MB). Free memory was 91.4 MB in the beginning and 180.4 MB in the end (delta: -89.0 MB). Peak memory consumption was 14.9 MB. Max. memory is 7.1 GB. [2019-11-23 22:18:13,238 INFO L168 Benchmark]: Boogie Preprocessor took 19.86 ms. Allocated memory is still 201.3 MB. Free memory was 180.4 MB in the beginning and 178.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 7.1 GB. [2019-11-23 22:18:13,238 INFO L168 Benchmark]: RCFGBuilder took 225.31 ms. Allocated memory is still 201.3 MB. Free memory was 178.7 MB in the beginning and 168.5 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. [2019-11-23 22:18:13,239 INFO L168 Benchmark]: TraceAbstraction took 8896.08 ms. Allocated memory was 201.3 MB in the beginning and 233.3 MB in the end (delta: 32.0 MB). Free memory was 167.8 MB in the beginning and 165.6 MB in the end (delta: 2.2 MB). Peak memory consumption was 34.2 MB. Max. memory is 7.1 GB. [2019-11-23 22:18:13,244 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.77 ms. Allocated memory is still 137.9 MB. Free memory is still 119.6 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 230.76 ms. Allocated memory is still 137.9 MB. Free memory was 100.9 MB in the beginning and 91.4 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 101.80 ms. Allocated memory was 137.9 MB in the beginning and 201.3 MB in the end (delta: 63.4 MB). Free memory was 91.4 MB in the beginning and 180.4 MB in the end (delta: -89.0 MB). Peak memory consumption was 14.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 19.86 ms. Allocated memory is still 201.3 MB. Free memory was 180.4 MB in the beginning and 178.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 225.31 ms. Allocated memory is still 201.3 MB. Free memory was 178.7 MB in the beginning and 168.5 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 8896.08 ms. Allocated memory was 201.3 MB in the beginning and 233.3 MB in the end (delta: 32.0 MB). Free memory was 167.8 MB in the beginning and 165.6 MB in the end (delta: 2.2 MB). Peak memory consumption was 34.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 7]: 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: 12]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 4]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: (y == 0 && x * 6 == y * 3 * y + y + y * 2 * y * y) || (1 == cond && x * 6 == y * 3 * y + y + y * 2 * y * y) - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: 1 == cond && x * 6 == y * 3 * y + y + y * 2 * y * y - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 2 error locations. Result: SAFE, OverallTime: 8.8s, OverallIterations: 4, TraceHistogramMax: 4, AutomataDifference: 2.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 24 SDtfs, 39 SDslu, 54 SDs, 0 SdLazy, 86 SolverSat, 31 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 39 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 6.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred in iteration=3, 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, 4 MinimizatonAttempts, 3 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 16 NumberOfFragments, 69 HoareAnnotationTreeSize, 4 FomulaSimplifications, 167 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 3 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 4.6s InterpolantComputationTime, 34 NumberOfCodeBlocks, 31 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 30 ConstructedInterpolants, 0 QuantifiedInterpolants, 4176 SizeOfPredicates, 28 NumberOfNonLiveVariables, 136 ConjunctsInSsa, 79 ConjunctsInUnsatCore, 4 InterpolantComputations, 1 PerfectInterpolantSequences, 9/24 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...