/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/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.trace.refinement.strategy SIFA_TAIPAN --sifa.abstract.domain CompoundDomain --rcfgbuilder.size.of.a.code.block LoopFreeBlock --sifa.call.summarizer TopInputCallSummarizer --sifa.fluid SizeLimitFluid --sifa.simplification.technique SIMPLIFY_QUICK -i ../../../trunk/examples/svcomp/loop-lit/ddlm2013.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 04:01:42,858 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 04:01:42,860 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 04:01:42,874 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 04:01:42,874 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 04:01:42,876 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 04:01:42,877 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 04:01:42,879 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 04:01:42,891 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 04:01:42,892 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 04:01:42,893 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 04:01:42,895 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 04:01:42,896 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 04:01:42,897 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 04:01:42,898 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 04:01:42,899 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 04:01:42,900 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 04:01:42,900 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 04:01:42,902 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 04:01:42,904 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 04:01:42,905 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 04:01:42,906 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 04:01:42,907 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 04:01:42,908 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 04:01:42,910 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-07 04:01:42,918 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 04:01:42,919 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 04:01:42,919 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 04:01:42,920 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 [2019-11-07 04:01:42,942 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 04:01:42,942 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 04:01:42,944 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 04:01:42,944 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 04:01:42,944 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 04:01:42,944 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 04:01:42,945 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 04:01:42,945 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 04:01:42,945 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 04:01:42,945 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 04:01:42,946 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 04:01:42,947 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 04:01:42,947 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 04:01:42,947 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 04:01:42,947 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 04:01:42,948 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 04:01:42,948 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 04:01:42,948 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 04:01:42,948 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 04:01:42,948 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 04:01:42,949 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 04:01:42,949 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 04:01:42,949 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 04:01:42,950 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 04:01:42,950 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 04:01:42,950 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 04:01:42,950 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 04:01:42,950 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 04:01:42,950 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-11-07 04:01:43,226 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 04:01:43,244 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 04:01:43,247 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 04:01:43,249 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 04:01:43,249 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 04:01:43,250 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/ddlm2013.i [2019-11-07 04:01:43,328 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/58a2f9b69/a238ad45e5a94c9f9dd9c992f1ed9b0e/FLAG9adc8ade1 [2019-11-07 04:01:43,811 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 04:01:43,812 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/ddlm2013.i [2019-11-07 04:01:43,819 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/58a2f9b69/a238ad45e5a94c9f9dd9c992f1ed9b0e/FLAG9adc8ade1 [2019-11-07 04:01:44,209 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/58a2f9b69/a238ad45e5a94c9f9dd9c992f1ed9b0e [2019-11-07 04:01:44,219 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 04:01:44,220 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 04:01:44,221 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 04:01:44,221 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 04:01:44,225 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 04:01:44,226 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:01:44" (1/1) ... [2019-11-07 04:01:44,229 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1acb3b61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:01:44, skipping insertion in model container [2019-11-07 04:01:44,229 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:01:44" (1/1) ... [2019-11-07 04:01:44,237 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 04:01:44,257 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 04:01:44,422 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 04:01:44,426 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 04:01:44,441 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 04:01:44,454 INFO L192 MainTranslator]: Completed translation [2019-11-07 04:01:44,454 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:01:44 WrapperNode [2019-11-07 04:01:44,454 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 04:01:44,455 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 04:01:44,455 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 04:01:44,455 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 04:01:44,543 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:01:44" (1/1) ... [2019-11-07 04:01:44,543 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:01:44" (1/1) ... [2019-11-07 04:01:44,549 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:01:44" (1/1) ... [2019-11-07 04:01:44,549 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:01:44" (1/1) ... [2019-11-07 04:01:44,553 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:01:44" (1/1) ... [2019-11-07 04:01:44,558 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:01:44" (1/1) ... [2019-11-07 04:01:44,559 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:01:44" (1/1) ... [2019-11-07 04:01:44,560 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 04:01:44,561 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 04:01:44,561 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 04:01:44,561 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 04:01:44,562 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:01:44" (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 [2019-11-07 04:01:44,627 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 04:01:44,627 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 04:01:44,627 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-11-07 04:01:44,627 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 04:01:44,628 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 04:01:44,628 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-11-07 04:01:44,628 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-11-07 04:01:44,628 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-07 04:01:44,628 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 04:01:44,628 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 04:01:44,629 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 04:01:44,938 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 04:01:44,938 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-11-07 04:01:44,939 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:01:44 BoogieIcfgContainer [2019-11-07 04:01:44,939 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 04:01:44,940 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 04:01:44,941 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 04:01:44,951 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 04:01:44,951 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 04:01:44" (1/3) ... [2019-11-07 04:01:44,955 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@634f0bc2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:01:44, skipping insertion in model container [2019-11-07 04:01:44,956 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:01:44" (2/3) ... [2019-11-07 04:01:44,956 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@634f0bc2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:01:44, skipping insertion in model container [2019-11-07 04:01:44,956 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:01:44" (3/3) ... [2019-11-07 04:01:44,961 INFO L109 eAbstractionObserver]: Analyzing ICFG ddlm2013.i [2019-11-07 04:01:44,981 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 04:01:44,989 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 04:01:45,000 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 04:01:45,024 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 04:01:45,024 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 04:01:45,024 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 04:01:45,024 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 04:01:45,025 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 04:01:45,025 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 04:01:45,025 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 04:01:45,025 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 04:01:45,042 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2019-11-07 04:01:45,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-07 04:01:45,048 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:01:45,049 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:01:45,051 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:01:45,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:01:45,057 INFO L82 PathProgramCache]: Analyzing trace with hash -1885241407, now seen corresponding path program 1 times [2019-11-07 04:01:45,064 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:01:45,064 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024004584] [2019-11-07 04:01:45,064 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:01:45,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:01:45,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 04:01:45,168 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024004584] [2019-11-07 04:01:45,168 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:01:45,169 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-07 04:01:45,170 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74964458] [2019-11-07 04:01:45,174 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-07 04:01:45,175 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:01:45,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-07 04:01:45,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-07 04:01:45,189 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 2 states. [2019-11-07 04:01:45,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:01:45,212 INFO L93 Difference]: Finished difference Result 31 states and 36 transitions. [2019-11-07 04:01:45,213 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-07 04:01:45,214 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2019-11-07 04:01:45,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:01:45,222 INFO L225 Difference]: With dead ends: 31 [2019-11-07 04:01:45,222 INFO L226 Difference]: Without dead ends: 13 [2019-11-07 04:01:45,226 INFO L630 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 [2019-11-07 04:01:45,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2019-11-07 04:01:45,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2019-11-07 04:01:45,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2019-11-07 04:01:45,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2019-11-07 04:01:45,265 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 11 [2019-11-07 04:01:45,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:01:45,265 INFO L462 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2019-11-07 04:01:45,265 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-07 04:01:45,265 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2019-11-07 04:01:45,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-07 04:01:45,266 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:01:45,266 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:01:45,267 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:01:45,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:01:45,267 INFO L82 PathProgramCache]: Analyzing trace with hash -1681236347, now seen corresponding path program 1 times [2019-11-07 04:01:45,268 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:01:45,268 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112379129] [2019-11-07 04:01:45,268 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:01:45,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:01:45,542 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 16 [2019-11-07 04:01:45,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 04:01:45,573 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112379129] [2019-11-07 04:01:45,573 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:01:45,573 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-07 04:01:45,574 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188492642] [2019-11-07 04:01:45,575 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-07 04:01:45,576 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:01:45,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-07 04:01:45,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-07 04:01:45,578 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 5 states. [2019-11-07 04:01:45,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:01:45,631 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2019-11-07 04:01:45,631 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-07 04:01:45,632 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2019-11-07 04:01:45,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:01:45,633 INFO L225 Difference]: With dead ends: 21 [2019-11-07 04:01:45,633 INFO L226 Difference]: Without dead ends: 15 [2019-11-07 04:01:45,634 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-07 04:01:45,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2019-11-07 04:01:45,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2019-11-07 04:01:45,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-11-07 04:01:45,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2019-11-07 04:01:45,639 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 12 [2019-11-07 04:01:45,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:01:45,640 INFO L462 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2019-11-07 04:01:45,640 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-07 04:01:45,640 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2019-11-07 04:01:45,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-07 04:01:45,641 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:01:45,641 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:01:45,642 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:01:45,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:01:45,642 INFO L82 PathProgramCache]: Analyzing trace with hash 1288057018, now seen corresponding path program 1 times [2019-11-07 04:01:45,643 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:01:45,643 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789656858] [2019-11-07 04:01:45,643 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:01:45,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:01:45,985 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 04:01:45,986 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789656858] [2019-11-07 04:01:45,987 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1154192641] [2019-11-07 04:01:45,988 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 [2019-11-07 04:01:46,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:01:46,036 INFO L256 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 18 conjunts are in the unsatisfiable core [2019-11-07 04:01:46,046 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 04:01:46,153 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 04:01:46,232 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 04:01:46,232 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 04:01:46,335 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 04:01:46,335 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [53847546] [2019-11-07 04:01:46,387 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2019-11-07 04:01:46,388 INFO L166 IcfgInterpreter]: Building call graph [2019-11-07 04:01:46,402 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-07 04:01:46,411 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-07 04:01:46,411 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-07 04:01:46,484 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 1 for LOIs [2019-11-07 04:01:46,731 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 6 for LOIs [2019-11-07 04:01:46,742 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 1 for LOIs [2019-11-07 04:01:46,743 INFO L180 IcfgInterpreter]: Interpretation finished [2019-11-07 04:01:46,932 INFO L218 FreeRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-11-07 04:01:46,932 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7, 7] total 21 [2019-11-07 04:01:46,933 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323116378] [2019-11-07 04:01:46,934 INFO L442 AbstractCegarLoop]: Interpolant automaton has 21 states [2019-11-07 04:01:46,934 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:01:46,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2019-11-07 04:01:46,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=355, Unknown=0, NotChecked=0, Total=420 [2019-11-07 04:01:46,936 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 21 states. [2019-11-07 04:01:47,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:01:47,596 INFO L93 Difference]: Finished difference Result 27 states and 28 transitions. [2019-11-07 04:01:47,597 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-11-07 04:01:47,597 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 14 [2019-11-07 04:01:47,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:01:47,598 INFO L225 Difference]: With dead ends: 27 [2019-11-07 04:01:47,598 INFO L226 Difference]: Without dead ends: 19 [2019-11-07 04:01:47,599 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=155, Invalid=715, Unknown=0, NotChecked=0, Total=870 [2019-11-07 04:01:47,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2019-11-07 04:01:47,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2019-11-07 04:01:47,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2019-11-07 04:01:47,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2019-11-07 04:01:47,603 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 14 [2019-11-07 04:01:47,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:01:47,604 INFO L462 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2019-11-07 04:01:47,604 INFO L463 AbstractCegarLoop]: Interpolant automaton has 21 states. [2019-11-07 04:01:47,604 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2019-11-07 04:01:47,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-11-07 04:01:47,605 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:01:47,605 INFO L410 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:01:47,810 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 04:01:47,810 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:01:47,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:01:47,810 INFO L82 PathProgramCache]: Analyzing trace with hash -71042716, now seen corresponding path program 2 times [2019-11-07 04:01:47,811 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:01:47,811 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419391790] [2019-11-07 04:01:47,811 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:01:47,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:01:50,171 WARN L838 $PredicateComparison]: unable to prove that (or (let ((.cse0 (div c_main_~i~0 2))) (and (or (<= .cse0 1) (let ((.cse5 (* 2 .cse0))) (let ((.cse17 (* 4294967296 (div c_main_~i~0 4294967296))) (.cse7 (= .cse5 c_main_~i~0)) (.cse18 (* .cse0 (- 2)))) (let ((.cse16 (div (+ .cse18 c_main_~i~0) 4294967296)) (.cse2 (not .cse7)) (.cse3 (< c_main_~i~0 .cse17)) (.cse15 (div (+ .cse18 c_main_~i~0 (- 2)) 4294967296)) (.cse9 (<= .cse17 c_main_~i~0))) (let ((.cse1 (or .cse7 .cse9)) (.cse10 (+ .cse15 1)) (.cse4 (and .cse2 .cse3)) (.cse14 (+ .cse16 1))) (and (let ((.cse6 (* 4294967296 .cse16)) (.cse8 (* 4294967296 .cse15))) (or (and (or (and .cse1 (<= c_main_~i~0 4)) (and .cse2 .cse3 (<= c_main_~i~0 6))) (or .cse4 (< (+ .cse5 .cse6) c_main_~i~0)) (or .cse7 (< (+ .cse5 .cse8 2) c_main_~i~0) .cse9)) (and .cse2 .cse3 (<= .cse10 0)) (let ((.cse11 (+ c_main_~j~0 c_main_~b~0)) (.cse12 (+ c_main_~i~0 c_main_~a~0 1))) (and (<= (+ c_main_~i~0 3) .cse11) (<= .cse11 .cse12) (let ((.cse13 (+ c_main_~i~0 c_main_~a~0 5))) (or (and .cse2 .cse3 (<= (+ .cse5 c_main_~j~0 .cse8 c_main_~b~0) .cse13)) (and .cse1 (<= (+ .cse5 c_main_~j~0 .cse6 c_main_~b~0) .cse13)))) (or (and .cse1 (<= .cse12 (+ c_main_~j~0 .cse6 c_main_~b~0))) (and .cse2 .cse3 (<= .cse12 (+ c_main_~j~0 .cse8 c_main_~b~0)))) (<= c_main_~a~0 2))) (and .cse1 (<= .cse14 0)))) (or (and .cse1 (<= 0 .cse16)) (and (or .cse7 .cse9 (< 0 .cse10)) (or .cse4 (< 0 .cse14))) (and .cse2 (<= 0 .cse15) .cse3)))))))) (or (< 1 .cse0) (<= 2 .cse0)))) (= c_main_~flag~0 0)) is different from false [2019-11-07 04:01:50,338 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 6 not checked. [2019-11-07 04:01:50,338 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419391790] [2019-11-07 04:01:50,338 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [795312256] [2019-11-07 04:01:50,339 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 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 04:01:50,396 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2019-11-07 04:01:50,396 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-07 04:01:50,397 INFO L256 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 32 conjunts are in the unsatisfiable core [2019-11-07 04:01:50,399 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 04:01:50,841 WARN L191 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 25 [2019-11-07 04:01:50,890 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 04:01:50,890 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 04:01:57,896 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 04:01:57,897 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1342985585] [2019-11-07 04:01:57,898 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2019-11-07 04:01:57,898 INFO L166 IcfgInterpreter]: Building call graph [2019-11-07 04:01:57,898 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-07 04:01:57,899 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-07 04:01:57,899 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-07 04:01:57,915 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 1 for LOIs [2019-11-07 04:01:58,025 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 6 for LOIs [2019-11-07 04:01:58,032 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 1 for LOIs [2019-11-07 04:01:58,033 INFO L180 IcfgInterpreter]: Interpretation finished [2019-11-07 04:01:58,228 INFO L218 FreeRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-11-07 04:01:58,228 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9, 7] total 27 [2019-11-07 04:01:58,229 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173973961] [2019-11-07 04:01:58,230 INFO L442 AbstractCegarLoop]: Interpolant automaton has 27 states [2019-11-07 04:01:58,230 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:01:58,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2019-11-07 04:01:58,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=560, Unknown=3, NotChecked=48, Total=702 [2019-11-07 04:01:58,231 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 27 states. [2019-11-07 04:01:58,879 WARN L191 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 52 [2019-11-07 04:01:59,182 WARN L191 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 56 [2019-11-07 04:01:59,625 WARN L191 SmtUtils]: Spent 341.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 54 [2019-11-07 04:02:00,111 WARN L191 SmtUtils]: Spent 441.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 58 [2019-11-07 04:02:03,877 WARN L191 SmtUtils]: Spent 3.29 s on a formula simplification. DAG size of input: 65 DAG size of output: 34 [2019-11-07 04:02:06,049 WARN L191 SmtUtils]: Spent 2.13 s on a formula simplification. DAG size of input: 76 DAG size of output: 31 [2019-11-07 04:02:13,368 WARN L191 SmtUtils]: Spent 6.38 s on a formula simplification. DAG size of input: 69 DAG size of output: 38 [2019-11-07 04:02:32,925 WARN L191 SmtUtils]: Spent 6.62 s on a formula simplification. DAG size of input: 65 DAG size of output: 32 [2019-11-07 04:02:32,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:02:32,929 INFO L93 Difference]: Finished difference Result 23 states and 24 transitions. [2019-11-07 04:02:32,929 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-11-07 04:02:32,929 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 18 [2019-11-07 04:02:32,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:02:32,930 INFO L225 Difference]: With dead ends: 23 [2019-11-07 04:02:32,930 INFO L226 Difference]: Without dead ends: 0 [2019-11-07 04:02:32,932 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 37 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 344 ImplicationChecksByTransitivity, 40.6s TimeCoverageRelationStatistics Valid=241, Invalid=1240, Unknown=5, NotChecked=74, Total=1560 [2019-11-07 04:02:32,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-07 04:02:32,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-07 04:02:32,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-07 04:02:32,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-07 04:02:32,933 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2019-11-07 04:02:32,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:02:32,933 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-07 04:02:32,933 INFO L463 AbstractCegarLoop]: Interpolant automaton has 27 states. [2019-11-07 04:02:32,933 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-07 04:02:32,933 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-07 04:02:33,135 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 04:02:33,153 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-07 04:02:33,299 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2019-11-07 04:02:33,299 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-11-07 04:02:33,299 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-07 04:02:33,300 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-11-07 04:02:33,300 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-11-07 04:02:33,300 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-07 04:02:33,300 INFO L443 ceAbstractionStarter]: For program point L31(lines 31 33) no Hoare annotation was computed. [2019-11-07 04:02:33,300 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 10 35) no Hoare annotation was computed. [2019-11-07 04:02:33,300 INFO L443 ceAbstractionStarter]: For program point L25-2(lines 10 35) no Hoare annotation was computed. [2019-11-07 04:02:33,301 INFO L443 ceAbstractionStarter]: For program point L21(lines 21 30) no Hoare annotation was computed. [2019-11-07 04:02:33,301 INFO L443 ceAbstractionStarter]: For program point L21-2(lines 10 35) no Hoare annotation was computed. [2019-11-07 04:02:33,301 INFO L439 ceAbstractionStarter]: At program point L32(line 32) the Hoare annotation is: (let ((.cse2 (* 4294967296 (div main_~b~0 4294967296))) (.cse3 (* 4294967296 (div main_~a~0 4294967296)))) (let ((.cse1 (+ .cse3 main_~b~0)) (.cse0 (+ main_~a~0 .cse2))) (or (and (<= 0 main_~i~0) (<= main_~flag~0 2147483647) (<= 1 main_~j~0) (<= 0 (+ main_~flag~0 2147483648)) (<= .cse0 .cse1) (<= 0 main_~a~0) (< .cse1 (+ main_~a~0 .cse2 1)) (not (= main_~flag~0 0))) (and (<= .cse1 .cse0) (< .cse0 (+ .cse3 main_~b~0 1)) (<= main_~b~0 main_~a~0))))) [2019-11-07 04:02:33,302 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 10 35) the Hoare annotation is: true [2019-11-07 04:02:33,302 INFO L446 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2019-11-07 04:02:33,302 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2019-11-07 04:02:33,302 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2019-11-07 04:02:33,302 INFO L443 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2019-11-07 04:02:33,302 INFO L443 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2019-11-07 04:02:33,302 INFO L443 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2019-11-07 04:02:33,307 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 04:02:33 BoogieIcfgContainer [2019-11-07 04:02:33,307 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-07 04:02:33,309 INFO L168 Benchmark]: Toolchain (without parser) took 49089.04 ms. Allocated memory was 138.9 MB in the beginning and 273.2 MB in the end (delta: 134.2 MB). Free memory was 103.5 MB in the beginning and 224.5 MB in the end (delta: -121.0 MB). Peak memory consumption was 13.2 MB. Max. memory is 7.1 GB. [2019-11-07 04:02:33,310 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 138.9 MB. Free memory was 122.2 MB in the beginning and 121.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-11-07 04:02:33,311 INFO L168 Benchmark]: CACSL2BoogieTranslator took 233.75 ms. Allocated memory is still 138.9 MB. Free memory was 103.3 MB in the beginning and 94.0 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. [2019-11-07 04:02:33,312 INFO L168 Benchmark]: Boogie Preprocessor took 105.29 ms. Allocated memory was 138.9 MB in the beginning and 201.9 MB in the end (delta: 62.9 MB). Free memory was 94.0 MB in the beginning and 180.6 MB in the end (delta: -86.5 MB). Peak memory consumption was 14.2 MB. Max. memory is 7.1 GB. [2019-11-07 04:02:33,313 INFO L168 Benchmark]: RCFGBuilder took 378.74 ms. Allocated memory is still 201.9 MB. Free memory was 180.6 MB in the beginning and 165.0 MB in the end (delta: 15.6 MB). Peak memory consumption was 15.6 MB. Max. memory is 7.1 GB. [2019-11-07 04:02:33,314 INFO L168 Benchmark]: TraceAbstraction took 48367.07 ms. Allocated memory was 201.9 MB in the beginning and 273.2 MB in the end (delta: 71.3 MB). Free memory was 164.4 MB in the beginning and 224.5 MB in the end (delta: -60.2 MB). Peak memory consumption was 11.1 MB. Max. memory is 7.1 GB. [2019-11-07 04:02:33,318 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 138.9 MB. Free memory was 122.2 MB in the beginning and 121.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 233.75 ms. Allocated memory is still 138.9 MB. Free memory was 103.3 MB in the beginning and 94.0 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 105.29 ms. Allocated memory was 138.9 MB in the beginning and 201.9 MB in the end (delta: 62.9 MB). Free memory was 94.0 MB in the beginning and 180.6 MB in the end (delta: -86.5 MB). Peak memory consumption was 14.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 378.74 ms. Allocated memory is still 201.9 MB. Free memory was 180.6 MB in the beginning and 165.0 MB in the end (delta: 15.6 MB). Peak memory consumption was 15.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 48367.07 ms. Allocated memory was 201.9 MB in the beginning and 273.2 MB in the end (delta: 71.3 MB). Free memory was 164.4 MB in the beginning and 224.5 MB in the end (delta: -60.2 MB). Peak memory consumption was 11.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: 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 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 19 locations, 1 error locations. Result: SAFE, OverallTime: 48.2s, OverallIterations: 4, TraceHistogramMax: 4, AutomataDifference: 35.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, HoareTripleCheckerStatistics: 50 SDtfs, 41 SDslu, 231 SDs, 0 SdLazy, 175 SolverSat, 23 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 3.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 141 GetRequests, 70 SyntacticMatches, 1 SemanticMatches, 70 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 515 ImplicationChecksByTransitivity, 41.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred in iteration=0, 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, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 6 LocationsWithAnnotation, 11 PreInvPairs, 16 NumberOfFragments, 94 HoareAnnotationTreeSize, 11 FomulaSimplifications, 16 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 6 FomulaSimplificationsInter, 136 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 10.7s InterpolantComputationTime, 87 NumberOfCodeBlocks, 87 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 111 ConstructedInterpolants, 0 QuantifiedInterpolants, 41916 SizeOfPredicates, 7 NumberOfNonLiveVariables, 110 ConjunctsInSsa, 50 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 0/42 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: OVERALL_TIME[ms]: 492, ICFG_INTERPRETER_ENTERED_PROCEDURES: 8, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 24, DAG_INTERPRETER_EARLY_EXITS: 0, TOOLS_POST_APPLICATIONS: 32, TOOLS_POST_TIME[ms]: 68, TOOLS_POST_CALL_APPLICATIONS: 10, TOOLS_POST_CALL_TIME[ms]: 14, TOOLS_POST_RETURN_APPLICATIONS: 4, TOOLS_POST_RETURN_TIME[ms]: 1, TOOLS_QUANTIFIERELIM_APPLICATIONS: 46, TOOLS_QUANTIFIERELIM_TIME[ms]: 68, TOOLS_QUANTIFIERELIM_MAX_TIME[ms]: 16, FLUID_QUERY_TIME[ms]: 6, FLUID_QUERIES: 94, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 6, DOMAIN_JOIN_TIME[ms]: 57, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME[ms]: 0, DOMAIN_WIDEN_APPLICATIONS: 4, DOMAIN_WIDEN_TIME[ms]: 180, DOMAIN_ISSUBSETEQ_APPLICATIONS: 6, DOMAIN_ISSUBSETEQ_TIME[ms]: 30, DOMAIN_ISBOTTOM_APPLICATIONS: 24, DOMAIN_ISBOTTOM_TIME[ms]: 33, LOOP_SUMMARIZER_APPLICATIONS: 2, LOOP_SUMMARIZER_CACHE_MISSES: 2, LOOP_SUMMARIZER_OVERALL_TIME[ms]: 262, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 261, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 6, CALL_SUMMARIZER_APPLICATIONS: 4, CALL_SUMMARIZER_CACHE_MISSES: 2, CALL_SUMMARIZER_OVERALL_TIME[ms]: 6, CALL_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 6, PROCEDURE_GRAPH_BUILDER_TIME[ms]: 7, PATH_EXPR_TIME[ms]: 6, REGEX_TO_DAG_TIME[ms]: 5, DAG_COMPRESSION_TIME[ms]: 28, DAG_COMPRESSION_PROCESSED_NODES: 152, DAG_COMPRESSION_RETAINED_NODES: 98, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...