java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/nla-digbench/ps2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-0883e75 [2019-09-05 12:29:34,211 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-05 12:29:34,213 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-05 12:29:34,225 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-05 12:29:34,225 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-05 12:29:34,226 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-05 12:29:34,228 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-05 12:29:34,229 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-05 12:29:34,231 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-05 12:29:34,232 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-05 12:29:34,233 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-05 12:29:34,234 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-05 12:29:34,234 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-05 12:29:34,235 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-05 12:29:34,236 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-05 12:29:34,237 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-05 12:29:34,238 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-05 12:29:34,239 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-05 12:29:34,241 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-05 12:29:34,242 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-05 12:29:34,244 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-05 12:29:34,245 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-05 12:29:34,246 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-05 12:29:34,247 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-05 12:29:34,249 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-05 12:29:34,263 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-05 12:29:34,264 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-05 12:29:34,265 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-05 12:29:34,266 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 [2019-09-05 12:29:34,289 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-05 12:29:34,289 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-05 12:29:34,291 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-05 12:29:34,292 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-05 12:29:34,292 INFO L138 SettingsManager]: * Use SBE=true [2019-09-05 12:29:34,292 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-05 12:29:34,292 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-05 12:29:34,293 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-05 12:29:34,293 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-05 12:29:34,293 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-05 12:29:34,294 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-05 12:29:34,294 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-05 12:29:34,294 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-05 12:29:34,295 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-05 12:29:34,295 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-05 12:29:34,295 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-05 12:29:34,295 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-05 12:29:34,296 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-05 12:29:34,296 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-05 12:29:34,296 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-05 12:29:34,297 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-05 12:29:34,297 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-05 12:29:34,297 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-05 12:29:34,297 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-05 12:29:34,298 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-05 12:29:34,298 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-05 12:29:34,298 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-05 12:29:34,298 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-05 12:29:34,298 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-05 12:29:34,327 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-05 12:29:34,339 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-05 12:29:34,342 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-05 12:29:34,344 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-05 12:29:34,344 INFO L275 PluginConnector]: CDTParser initialized [2019-09-05 12:29:34,345 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench/ps2.c [2019-09-05 12:29:34,406 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ce711fc0f/2eda6974e86f46c7a3bba28d33a3cbeb/FLAG7ad7d61df [2019-09-05 12:29:34,850 INFO L306 CDTParser]: Found 1 translation units. [2019-09-05 12:29:34,852 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench/ps2.c [2019-09-05 12:29:34,859 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ce711fc0f/2eda6974e86f46c7a3bba28d33a3cbeb/FLAG7ad7d61df [2019-09-05 12:29:35,252 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ce711fc0f/2eda6974e86f46c7a3bba28d33a3cbeb [2019-09-05 12:29:35,265 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-05 12:29:35,266 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-05 12:29:35,267 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-05 12:29:35,268 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-05 12:29:35,271 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-05 12:29:35,272 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.09 12:29:35" (1/1) ... [2019-09-05 12:29:35,275 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75a69a20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 12:29:35, skipping insertion in model container [2019-09-05 12:29:35,275 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.09 12:29:35" (1/1) ... [2019-09-05 12:29:35,282 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-05 12:29:35,299 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-05 12:29:35,466 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-05 12:29:35,473 INFO L188 MainTranslator]: Completed pre-run [2019-09-05 12:29:35,496 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-05 12:29:35,513 INFO L192 MainTranslator]: Completed translation [2019-09-05 12:29:35,514 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 12:29:35 WrapperNode [2019-09-05 12:29:35,515 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-05 12:29:35,516 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-05 12:29:35,516 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-05 12:29:35,516 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-05 12:29:35,614 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 12:29:35" (1/1) ... [2019-09-05 12:29:35,614 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 12:29:35" (1/1) ... [2019-09-05 12:29:35,620 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 12:29:35" (1/1) ... [2019-09-05 12:29:35,620 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 12:29:35" (1/1) ... [2019-09-05 12:29:35,624 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 12:29:35" (1/1) ... [2019-09-05 12:29:35,628 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 12:29:35" (1/1) ... [2019-09-05 12:29:35,629 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 12:29:35" (1/1) ... [2019-09-05 12:29:35,630 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-05 12:29:35,631 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-05 12:29:35,631 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-05 12:29:35,631 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-05 12:29:35,632 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 12:29:35" (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 [2019-09-05 12:29:35,688 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-05 12:29:35,689 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-05 12:29:35,689 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-09-05 12:29:35,689 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-05 12:29:35,689 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-05 12:29:35,689 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-05 12:29:35,689 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-09-05 12:29:35,690 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-09-05 12:29:35,690 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-05 12:29:35,690 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-05 12:29:35,690 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-05 12:29:35,868 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-05 12:29:35,868 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-05 12:29:35,869 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.09 12:29:35 BoogieIcfgContainer [2019-09-05 12:29:35,870 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-05 12:29:35,876 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-05 12:29:35,876 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-05 12:29:35,887 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-05 12:29:35,890 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.09 12:29:35" (1/3) ... [2019-09-05 12:29:35,892 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19b3877e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.09 12:29:35, skipping insertion in model container [2019-09-05 12:29:35,892 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 12:29:35" (2/3) ... [2019-09-05 12:29:35,892 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19b3877e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.09 12:29:35, skipping insertion in model container [2019-09-05 12:29:35,893 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.09 12:29:35" (3/3) ... [2019-09-05 12:29:35,895 INFO L109 eAbstractionObserver]: Analyzing ICFG ps2.c [2019-09-05 12:29:35,922 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-05 12:29:35,939 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-05 12:29:35,974 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-05 12:29:36,015 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-05 12:29:36,016 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-05 12:29:36,016 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-05 12:29:36,016 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-05 12:29:36,017 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-05 12:29:36,017 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-05 12:29:36,017 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-05 12:29:36,017 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-05 12:29:36,017 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-05 12:29:36,032 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2019-09-05 12:29:36,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-09-05 12:29:36,038 INFO L391 BasicCegarLoop]: Found error trace [2019-09-05 12:29:36,039 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-05 12:29:36,041 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-05 12:29:36,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-05 12:29:36,045 INFO L82 PathProgramCache]: Analyzing trace with hash 1712389503, now seen corresponding path program 1 times [2019-09-05 12:29:36,047 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-05 12:29:36,047 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-05 12:29:36,088 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-05 12:29:36,088 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-05 12:29:36,088 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-05 12:29:36,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-05 12:29:36,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-05 12:29:36,149 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-05 12:29:36,149 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-05 12:29:36,153 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-05 12:29:36,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-05 12:29:36,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-05 12:29:36,167 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 2 states. [2019-09-05 12:29:36,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-05 12:29:36,187 INFO L93 Difference]: Finished difference Result 35 states and 45 transitions. [2019-09-05 12:29:36,187 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-05 12:29:36,188 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-09-05 12:29:36,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-05 12:29:36,196 INFO L225 Difference]: With dead ends: 35 [2019-09-05 12:29:36,196 INFO L226 Difference]: Without dead ends: 15 [2019-09-05 12:29:36,200 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-05 12:29:36,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2019-09-05 12:29:36,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2019-09-05 12:29:36,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-09-05 12:29:36,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2019-09-05 12:29:36,242 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 10 [2019-09-05 12:29:36,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-05 12:29:36,242 INFO L475 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2019-09-05 12:29:36,243 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-05 12:29:36,243 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2019-09-05 12:29:36,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-09-05 12:29:36,244 INFO L391 BasicCegarLoop]: Found error trace [2019-09-05 12:29:36,244 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-05 12:29:36,244 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-05 12:29:36,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-05 12:29:36,245 INFO L82 PathProgramCache]: Analyzing trace with hash 1704941753, now seen corresponding path program 1 times [2019-09-05 12:29:36,245 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-05 12:29:36,245 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-05 12:29:36,246 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-05 12:29:36,246 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-05 12:29:36,247 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-05 12:29:36,252 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-09-05 12:29:36,252 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-09-05 12:29:36,253 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP 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 [2019-09-05 12:29:36,275 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-05 12:29:36,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-05 12:29:36,314 INFO L256 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 10 conjunts are in the unsatisfiable core [2019-09-05 12:29:36,325 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-05 12:29:36,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-05 12:29:36,422 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-05 12:29:36,422 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-05 12:29:36,424 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-05 12:29:36,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-05 12:29:36,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-05 12:29:36,426 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand 5 states. [2019-09-05 12:29:36,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-05 12:29:36,513 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2019-09-05 12:29:36,514 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-05 12:29:36,514 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2019-09-05 12:29:36,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-05 12:29:36,515 INFO L225 Difference]: With dead ends: 25 [2019-09-05 12:29:36,515 INFO L226 Difference]: Without dead ends: 22 [2019-09-05 12:29:36,517 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-09-05 12:29:36,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2019-09-05 12:29:36,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2019-09-05 12:29:36,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-09-05 12:29:36,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2019-09-05 12:29:36,531 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 10 [2019-09-05 12:29:36,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-05 12:29:36,532 INFO L475 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2019-09-05 12:29:36,532 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-05 12:29:36,532 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2019-09-05 12:29:36,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-09-05 12:29:36,533 INFO L391 BasicCegarLoop]: Found error trace [2019-09-05 12:29:36,533 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-05 12:29:36,534 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-05 12:29:36,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-05 12:29:36,535 INFO L82 PathProgramCache]: Analyzing trace with hash 241116926, now seen corresponding path program 1 times [2019-09-05 12:29:36,535 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-05 12:29:36,535 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-05 12:29:36,537 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-05 12:29:36,538 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-05 12:29:36,538 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-05 12:29:36,552 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-09-05 12:29:36,552 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-09-05 12:29:36,553 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP 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 [2019-09-05 12:29:36,567 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-05 12:29:36,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-05 12:29:36,584 INFO L256 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 19 conjunts are in the unsatisfiable core [2019-09-05 12:29:36,586 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-05 12:29:36,674 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-05 12:29:36,680 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-09-05 12:29:36,681 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2019-09-05 12:29:36,682 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-09-05 12:29:36,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-09-05 12:29:36,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-09-05 12:29:36,683 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand 8 states. [2019-09-05 12:29:36,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-05 12:29:36,840 INFO L93 Difference]: Finished difference Result 32 states and 34 transitions. [2019-09-05 12:29:36,841 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-05 12:29:36,841 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 17 [2019-09-05 12:29:36,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-05 12:29:36,844 INFO L225 Difference]: With dead ends: 32 [2019-09-05 12:29:36,844 INFO L226 Difference]: Without dead ends: 29 [2019-09-05 12:29:36,845 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2019-09-05 12:29:36,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-09-05 12:29:36,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2019-09-05 12:29:36,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-09-05 12:29:36,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2019-09-05 12:29:36,858 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 17 [2019-09-05 12:29:36,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-05 12:29:36,858 INFO L475 AbstractCegarLoop]: Abstraction has 29 states and 30 transitions. [2019-09-05 12:29:36,858 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-09-05 12:29:36,859 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions. [2019-09-05 12:29:36,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-09-05 12:29:36,861 INFO L391 BasicCegarLoop]: Found error trace [2019-09-05 12:29:36,861 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2019-09-05 12:29:36,863 INFO L418 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-05 12:29:36,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-05 12:29:36,863 INFO L82 PathProgramCache]: Analyzing trace with hash 311210265, now seen corresponding path program 2 times [2019-09-05 12:29:36,863 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-05 12:29:36,863 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-05 12:29:36,865 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-05 12:29:36,866 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-05 12:29:36,867 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-05 12:29:36,876 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-09-05 12:29:36,877 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-09-05 12:29:36,877 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP 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) [2019-09-05 12:29:36,894 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-09-05 12:29:36,922 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-09-05 12:29:36,922 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-05 12:29:36,925 INFO L256 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 23 conjunts are in the unsatisfiable core [2019-09-05 12:29:36,929 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-05 12:29:37,048 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-09-05 12:29:37,051 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-09-05 12:29:37,051 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2019-09-05 12:29:37,052 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-05 12:29:37,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-05 12:29:37,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2019-09-05 12:29:37,055 INFO L87 Difference]: Start difference. First operand 29 states and 30 transitions. Second operand 9 states. [2019-09-05 12:29:37,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-05 12:29:37,190 INFO L93 Difference]: Finished difference Result 39 states and 41 transitions. [2019-09-05 12:29:37,190 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-09-05 12:29:37,190 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 24 [2019-09-05 12:29:37,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-05 12:29:37,192 INFO L225 Difference]: With dead ends: 39 [2019-09-05 12:29:37,192 INFO L226 Difference]: Without dead ends: 36 [2019-09-05 12:29:37,193 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2019-09-05 12:29:37,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2019-09-05 12:29:37,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2019-09-05 12:29:37,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2019-09-05 12:29:37,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 37 transitions. [2019-09-05 12:29:37,202 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 37 transitions. Word has length 24 [2019-09-05 12:29:37,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-05 12:29:37,202 INFO L475 AbstractCegarLoop]: Abstraction has 36 states and 37 transitions. [2019-09-05 12:29:37,202 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-05 12:29:37,202 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 37 transitions. [2019-09-05 12:29:37,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-09-05 12:29:37,204 INFO L391 BasicCegarLoop]: Found error trace [2019-09-05 12:29:37,204 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2019-09-05 12:29:37,205 INFO L418 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-05 12:29:37,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-05 12:29:37,206 INFO L82 PathProgramCache]: Analyzing trace with hash -928013666, now seen corresponding path program 3 times [2019-09-05 12:29:37,206 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-05 12:29:37,206 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-05 12:29:37,207 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-05 12:29:37,209 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-05 12:29:37,209 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-05 12:29:37,219 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-09-05 12:29:37,220 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-09-05 12:29:37,220 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP 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 [2019-09-05 12:29:37,251 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-09-05 12:29:37,263 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-09-05 12:29:37,264 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-05 12:29:37,265 INFO L256 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 15 conjunts are in the unsatisfiable core [2019-09-05 12:29:37,267 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-05 12:29:37,354 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-05 12:29:37,381 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-09-05 12:29:37,385 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-09-05 12:29:37,386 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2019-09-05 12:29:37,386 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-05 12:29:37,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-05 12:29:37,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-09-05 12:29:37,387 INFO L87 Difference]: Start difference. First operand 36 states and 37 transitions. Second operand 7 states. [2019-09-05 12:29:37,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-05 12:29:37,449 INFO L93 Difference]: Finished difference Result 36 states and 37 transitions. [2019-09-05 12:29:37,449 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-05 12:29:37,449 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 31 [2019-09-05 12:29:37,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-05 12:29:37,450 INFO L225 Difference]: With dead ends: 36 [2019-09-05 12:29:37,450 INFO L226 Difference]: Without dead ends: 0 [2019-09-05 12:29:37,451 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2019-09-05 12:29:37,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-05 12:29:37,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-05 12:29:37,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-05 12:29:37,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-05 12:29:37,452 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 31 [2019-09-05 12:29:37,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-05 12:29:37,452 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-05 12:29:37,452 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-05 12:29:37,452 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-05 12:29:37,453 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-05 12:29:37,457 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-09-05 12:29:37,524 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2019-09-05 12:29:37,524 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-09-05 12:29:37,524 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-09-05 12:29:37,524 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-09-05 12:29:37,524 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-09-05 12:29:37,525 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-09-05 12:29:37,525 INFO L443 ceAbstractionStarter]: For program point L30(line 30) no Hoare annotation was computed. [2019-09-05 12:29:37,525 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 12 33) the Hoare annotation is: true [2019-09-05 12:29:37,525 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 12 33) no Hoare annotation was computed. [2019-09-05 12:29:37,525 INFO L439 ceAbstractionStarter]: At program point L21(line 21) the Hoare annotation is: (= (+ (+ (- (* 2 main_~x~0)) (* main_~y~0 main_~y~0)) main_~y~0) 0) [2019-09-05 12:29:37,525 INFO L443 ceAbstractionStarter]: For program point L21-1(lines 20 29) no Hoare annotation was computed. [2019-09-05 12:29:37,526 INFO L439 ceAbstractionStarter]: At program point L20-2(lines 20 29) the Hoare annotation is: (= (+ (+ (- (* 2 main_~x~0)) (* main_~y~0 main_~y~0)) main_~y~0) 0) [2019-09-05 12:29:37,526 INFO L439 ceAbstractionStarter]: At program point L20-3(lines 20 29) the Hoare annotation is: (= (+ (+ (- (* 2 main_~x~0)) (* main_~y~0 main_~y~0)) main_~y~0) 0) [2019-09-05 12:29:37,526 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 12 33) no Hoare annotation was computed. [2019-09-05 12:29:37,527 INFO L446 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 4 10) the Hoare annotation is: true [2019-09-05 12:29:37,527 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 7) no Hoare annotation was computed. [2019-09-05 12:29:37,527 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 4 10) no Hoare annotation was computed. [2019-09-05 12:29:37,527 INFO L443 ceAbstractionStarter]: For program point L6(lines 6 7) no Hoare annotation was computed. [2019-09-05 12:29:37,527 INFO L443 ceAbstractionStarter]: For program point L5(lines 5 8) no Hoare annotation was computed. [2019-09-05 12:29:37,527 INFO L443 ceAbstractionStarter]: For program point L5-2(lines 4 10) no Hoare annotation was computed. [2019-09-05 12:29:37,541 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.09 12:29:37 BoogieIcfgContainer [2019-09-05 12:29:37,542 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-05 12:29:37,545 INFO L168 Benchmark]: Toolchain (without parser) took 2277.21 ms. Allocated memory was 139.5 MB in the beginning and 222.8 MB in the end (delta: 83.4 MB). Free memory was 87.2 MB in the beginning and 168.9 MB in the end (delta: -81.7 MB). Peak memory consumption was 1.6 MB. Max. memory is 7.1 GB. [2019-09-05 12:29:37,546 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 139.5 MB. Free memory was 105.6 MB in the beginning and 105.4 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-05 12:29:37,547 INFO L168 Benchmark]: CACSL2BoogieTranslator took 247.91 ms. Allocated memory is still 139.5 MB. Free memory was 86.8 MB in the beginning and 77.6 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB. [2019-09-05 12:29:37,548 INFO L168 Benchmark]: Boogie Preprocessor took 114.53 ms. Allocated memory was 139.5 MB in the beginning and 199.2 MB in the end (delta: 59.8 MB). Free memory was 77.6 MB in the beginning and 177.1 MB in the end (delta: -99.5 MB). Peak memory consumption was 11.4 MB. Max. memory is 7.1 GB. [2019-09-05 12:29:37,556 INFO L168 Benchmark]: RCFGBuilder took 239.28 ms. Allocated memory is still 199.2 MB. Free memory was 177.1 MB in the beginning and 165.7 MB in the end (delta: 11.4 MB). Peak memory consumption was 11.4 MB. Max. memory is 7.1 GB. [2019-09-05 12:29:37,559 INFO L168 Benchmark]: TraceAbstraction took 1666.14 ms. Allocated memory was 199.2 MB in the beginning and 222.8 MB in the end (delta: 23.6 MB). Free memory was 165.4 MB in the beginning and 168.9 MB in the end (delta: -3.5 MB). Peak memory consumption was 20.1 MB. Max. memory is 7.1 GB. [2019-09-05 12:29:37,567 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 139.5 MB. Free memory was 105.6 MB in the beginning and 105.4 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 247.91 ms. Allocated memory is still 139.5 MB. Free memory was 86.8 MB in the beginning and 77.6 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 114.53 ms. Allocated memory was 139.5 MB in the beginning and 199.2 MB in the end (delta: 59.8 MB). Free memory was 77.6 MB in the beginning and 177.1 MB in the end (delta: -99.5 MB). Peak memory consumption was 11.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 239.28 ms. Allocated memory is still 199.2 MB. Free memory was 177.1 MB in the beginning and 165.7 MB in the end (delta: 11.4 MB). Peak memory consumption was 11.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1666.14 ms. Allocated memory was 199.2 MB in the beginning and 222.8 MB in the end (delta: 23.6 MB). Free memory was 165.4 MB in the beginning and 168.9 MB in the end (delta: -3.5 MB). Peak memory consumption was 20.1 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: -(2 * x) + y * y + y == 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 20 locations, 1 error locations. SAFE Result, 1.5s OverallTime, 5 OverallIterations, 4 TraceHistogramMax, 0.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 72 SDtfs, 40 SDslu, 203 SDs, 0 SdLazy, 160 SolverSat, 14 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 86 GetRequests, 56 SyntacticMatches, 3 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=36occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 17 PreInvPairs, 29 NumberOfFragments, 41 HoareAnnotationTreeSize, 17 FomulaSimplifications, 130 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 26 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 92 NumberOfCodeBlocks, 78 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 87 ConstructedInterpolants, 0 QuantifiedInterpolants, 5577 SizeOfPredicates, 11 NumberOfNonLiveVariables, 188 ConjunctsInSsa, 67 ConjunctsInUnsatCore, 5 InterpolantComputations, 2 PerfectInterpolantSequences, 37/52 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...