/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 -i ../../../trunk/examples/svcomp/loops-crafted-1/nested5-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-06 21:23:47,048 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-06 21:23:47,051 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-06 21:23:47,070 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-06 21:23:47,071 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-06 21:23:47,072 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-06 21:23:47,074 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-06 21:23:47,086 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-06 21:23:47,089 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-06 21:23:47,090 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-06 21:23:47,093 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-06 21:23:47,095 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-06 21:23:47,095 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-06 21:23:47,096 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-06 21:23:47,097 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-06 21:23:47,099 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-06 21:23:47,100 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-06 21:23:47,102 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-06 21:23:47,103 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-06 21:23:47,105 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-06 21:23:47,107 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-06 21:23:47,108 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-06 21:23:47,109 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-06 21:23:47,109 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-06 21:23:47,111 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-06 21:23:47,119 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-06 21:23:47,122 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-06 21:23:47,122 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-06 21:23:47,125 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 [2019-11-06 21:23:47,145 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-06 21:23:47,145 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-06 21:23:47,147 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-06 21:23:47,147 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-06 21:23:47,147 INFO L138 SettingsManager]: * Use SBE=true [2019-11-06 21:23:47,148 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-06 21:23:47,148 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-06 21:23:47,148 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-06 21:23:47,148 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-06 21:23:47,148 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-06 21:23:47,149 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-06 21:23:47,150 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-06 21:23:47,150 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-06 21:23:47,150 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-06 21:23:47,150 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-06 21:23:47,151 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-06 21:23:47,151 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-06 21:23:47,151 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-06 21:23:47,151 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-06 21:23:47,151 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-06 21:23:47,152 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-06 21:23:47,152 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 21:23:47,152 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-06 21:23:47,152 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-06 21:23:47,153 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-06 21:23:47,153 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-06 21:23:47,153 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-06 21:23:47,153 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-06 21:23:47,153 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-06 21:23:47,405 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-06 21:23:47,418 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-06 21:23:47,421 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-06 21:23:47,423 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-06 21:23:47,423 INFO L275 PluginConnector]: CDTParser initialized [2019-11-06 21:23:47,424 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/nested5-1.c [2019-11-06 21:23:47,488 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/78b2668f5/960e581ee9ff40a1a57110e86f8a58d6/FLAG767056e41 [2019-11-06 21:23:47,931 INFO L306 CDTParser]: Found 1 translation units. [2019-11-06 21:23:47,934 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/nested5-1.c [2019-11-06 21:23:47,940 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/78b2668f5/960e581ee9ff40a1a57110e86f8a58d6/FLAG767056e41 [2019-11-06 21:23:48,369 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/78b2668f5/960e581ee9ff40a1a57110e86f8a58d6 [2019-11-06 21:23:48,377 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-06 21:23:48,379 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-06 21:23:48,380 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-06 21:23:48,380 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-06 21:23:48,383 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-06 21:23:48,384 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:23:48" (1/1) ... [2019-11-06 21:23:48,387 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1172a0d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:23:48, skipping insertion in model container [2019-11-06 21:23:48,387 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:23:48" (1/1) ... [2019-11-06 21:23:48,394 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-06 21:23:48,408 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-06 21:23:48,594 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 21:23:48,598 INFO L188 MainTranslator]: Completed pre-run [2019-11-06 21:23:48,616 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 21:23:48,628 INFO L192 MainTranslator]: Completed translation [2019-11-06 21:23:48,629 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:23:48 WrapperNode [2019-11-06 21:23:48,629 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-06 21:23:48,630 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-06 21:23:48,630 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-06 21:23:48,630 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-06 21:23:48,715 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:23:48" (1/1) ... [2019-11-06 21:23:48,716 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:23:48" (1/1) ... [2019-11-06 21:23:48,723 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:23:48" (1/1) ... [2019-11-06 21:23:48,724 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:23:48" (1/1) ... [2019-11-06 21:23:48,732 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:23:48" (1/1) ... [2019-11-06 21:23:48,743 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:23:48" (1/1) ... [2019-11-06 21:23:48,749 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:23:48" (1/1) ... [2019-11-06 21:23:48,750 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-06 21:23:48,751 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-06 21:23:48,751 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-06 21:23:48,751 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-06 21:23:48,752 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:23:48" (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 [2019-11-06 21:23:48,800 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-06 21:23:48,800 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-06 21:23:48,800 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-11-06 21:23:48,800 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-06 21:23:48,800 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-06 21:23:48,800 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-11-06 21:23:48,801 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-06 21:23:48,801 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-06 21:23:48,801 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-06 21:23:49,013 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-06 21:23:49,014 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-11-06 21:23:49,015 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:23:49 BoogieIcfgContainer [2019-11-06 21:23:49,015 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-06 21:23:49,016 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-06 21:23:49,016 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-06 21:23:49,019 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-06 21:23:49,019 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 09:23:48" (1/3) ... [2019-11-06 21:23:49,020 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64001451 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:23:49, skipping insertion in model container [2019-11-06 21:23:49,020 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:23:48" (2/3) ... [2019-11-06 21:23:49,021 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64001451 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:23:49, skipping insertion in model container [2019-11-06 21:23:49,021 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:23:49" (3/3) ... [2019-11-06 21:23:49,023 INFO L109 eAbstractionObserver]: Analyzing ICFG nested5-1.c [2019-11-06 21:23:49,032 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-06 21:23:49,039 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-06 21:23:49,050 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-06 21:23:49,075 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-06 21:23:49,075 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-06 21:23:49,075 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-06 21:23:49,075 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-06 21:23:49,076 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-06 21:23:49,076 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-06 21:23:49,076 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-06 21:23:49,076 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-06 21:23:49,094 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2019-11-06 21:23:49,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-06 21:23:49,098 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:23:49,099 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:23:49,101 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:23:49,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:23:49,106 INFO L82 PathProgramCache]: Analyzing trace with hash 2037426592, now seen corresponding path program 1 times [2019-11-06 21:23:49,112 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:23:49,112 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168552633] [2019-11-06 21:23:49,113 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:23:49,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:23:49,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:23:49,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:23:49,229 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168552633] [2019-11-06 21:23:49,229 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 21:23:49,230 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-06 21:23:49,231 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317735360] [2019-11-06 21:23:49,234 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-06 21:23:49,235 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:23:49,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-06 21:23:49,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-06 21:23:49,247 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 2 states. [2019-11-06 21:23:49,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:23:49,271 INFO L93 Difference]: Finished difference Result 49 states and 70 transitions. [2019-11-06 21:23:49,271 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-06 21:23:49,272 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 14 [2019-11-06 21:23:49,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:23:49,281 INFO L225 Difference]: With dead ends: 49 [2019-11-06 21:23:49,281 INFO L226 Difference]: Without dead ends: 22 [2019-11-06 21:23:49,285 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-06 21:23:49,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2019-11-06 21:23:49,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2019-11-06 21:23:49,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-11-06 21:23:49,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2019-11-06 21:23:49,321 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 14 [2019-11-06 21:23:49,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:23:49,321 INFO L462 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2019-11-06 21:23:49,321 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-06 21:23:49,322 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2019-11-06 21:23:49,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-06 21:23:49,323 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:23:49,323 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:23:49,323 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:23:49,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:23:49,324 INFO L82 PathProgramCache]: Analyzing trace with hash 2031885466, now seen corresponding path program 1 times [2019-11-06 21:23:49,324 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:23:49,324 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566726959] [2019-11-06 21:23:49,324 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:23:49,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:23:49,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:23:49,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:23:49,460 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566726959] [2019-11-06 21:23:49,464 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 21:23:49,465 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-06 21:23:49,465 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298057031] [2019-11-06 21:23:49,471 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-06 21:23:49,471 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:23:49,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-06 21:23:49,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-06 21:23:49,476 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand 3 states. [2019-11-06 21:23:49,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:23:49,538 INFO L93 Difference]: Finished difference Result 48 states and 60 transitions. [2019-11-06 21:23:49,538 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-06 21:23:49,538 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2019-11-06 21:23:49,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:23:49,540 INFO L225 Difference]: With dead ends: 48 [2019-11-06 21:23:49,540 INFO L226 Difference]: Without dead ends: 31 [2019-11-06 21:23:49,541 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-06 21:23:49,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2019-11-06 21:23:49,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 23. [2019-11-06 21:23:49,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-11-06 21:23:49,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2019-11-06 21:23:49,551 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 14 [2019-11-06 21:23:49,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:23:49,552 INFO L462 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2019-11-06 21:23:49,552 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-06 21:23:49,552 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2019-11-06 21:23:49,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-06 21:23:49,553 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:23:49,554 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:23:49,554 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:23:49,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:23:49,554 INFO L82 PathProgramCache]: Analyzing trace with hash -935219944, now seen corresponding path program 1 times [2019-11-06 21:23:49,555 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:23:49,559 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052490622] [2019-11-06 21:23:49,559 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:23:49,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:23:49,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:23:49,674 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:23:49,674 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052490622] [2019-11-06 21:23:49,674 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1665698471] [2019-11-06 21:23:49,675 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 [2019-11-06 21:23:49,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:23:49,728 INFO L256 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-06 21:23:49,734 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 21:23:49,776 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:23:49,777 INFO L218 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-06 21:23:49,777 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2019-11-06 21:23:49,777 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955834634] [2019-11-06 21:23:49,778 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-06 21:23:49,778 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:23:49,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-06 21:23:49,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-06 21:23:49,779 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand 5 states. [2019-11-06 21:23:49,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:23:49,824 INFO L93 Difference]: Finished difference Result 51 states and 63 transitions. [2019-11-06 21:23:49,825 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-06 21:23:49,825 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2019-11-06 21:23:49,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:23:49,826 INFO L225 Difference]: With dead ends: 51 [2019-11-06 21:23:49,826 INFO L226 Difference]: Without dead ends: 33 [2019-11-06 21:23:49,827 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-06 21:23:49,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2019-11-06 21:23:49,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 25. [2019-11-06 21:23:49,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2019-11-06 21:23:49,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2019-11-06 21:23:49,834 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 16 [2019-11-06 21:23:49,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:23:49,835 INFO L462 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2019-11-06 21:23:49,835 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-06 21:23:49,835 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2019-11-06 21:23:49,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-11-06 21:23:49,836 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:23:49,836 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:23:50,043 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:23:50,044 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:23:50,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:23:50,044 INFO L82 PathProgramCache]: Analyzing trace with hash -465234410, now seen corresponding path program 2 times [2019-11-06 21:23:50,045 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:23:50,045 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125091889] [2019-11-06 21:23:50,045 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:23:50,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:23:50,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:23:50,179 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:23:50,180 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125091889] [2019-11-06 21:23:50,180 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [952018257] [2019-11-06 21:23:50,180 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2019-11-06 21:23:50,215 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-06 21:23:50,215 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-06 21:23:50,216 INFO L256 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-06 21:23:50,217 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 21:23:50,248 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:23:50,250 INFO L218 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-06 21:23:50,251 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2019-11-06 21:23:50,251 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154831285] [2019-11-06 21:23:50,252 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-06 21:23:50,253 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:23:50,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-06 21:23:50,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-11-06 21:23:50,254 INFO L87 Difference]: Start difference. First operand 25 states and 29 transitions. Second operand 6 states. [2019-11-06 21:23:50,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:23:50,304 INFO L93 Difference]: Finished difference Result 55 states and 67 transitions. [2019-11-06 21:23:50,305 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-06 21:23:50,305 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2019-11-06 21:23:50,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:23:50,306 INFO L225 Difference]: With dead ends: 55 [2019-11-06 21:23:50,306 INFO L226 Difference]: Without dead ends: 35 [2019-11-06 21:23:50,307 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-11-06 21:23:50,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2019-11-06 21:23:50,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 27. [2019-11-06 21:23:50,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-11-06 21:23:50,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2019-11-06 21:23:50,313 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 18 [2019-11-06 21:23:50,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:23:50,314 INFO L462 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2019-11-06 21:23:50,314 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-06 21:23:50,314 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2019-11-06 21:23:50,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-11-06 21:23:50,315 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:23:50,315 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:23:50,527 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:23:50,528 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:23:50,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:23:50,528 INFO L82 PathProgramCache]: Analyzing trace with hash 219297684, now seen corresponding path program 3 times [2019-11-06 21:23:50,528 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:23:50,529 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882044166] [2019-11-06 21:23:50,529 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:23:50,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:23:50,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:23:50,670 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:23:50,670 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882044166] [2019-11-06 21:23:50,671 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2104700226] [2019-11-06 21:23:50,671 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 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:23:50,945 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-11-06 21:23:50,945 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-06 21:23:50,946 INFO L256 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-06 21:23:50,947 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 21:23:51,013 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-06 21:23:51,014 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-06 21:23:51,015 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-06 21:23:51,019 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-06 21:23:51,021 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-06 21:23:54,353 WARN L191 SmtUtils]: Spent 2.84 s on a formula simplification. DAG size of input: 43 DAG size of output: 19 [2019-11-06 21:23:56,514 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-11-06 21:23:56,514 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-06 21:23:56,514 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2019-11-06 21:23:56,515 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550168079] [2019-11-06 21:23:56,515 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-06 21:23:56,515 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:23:56,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-06 21:23:56,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=80, Unknown=1, NotChecked=0, Total=110 [2019-11-06 21:23:56,516 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand 7 states. [2019-11-06 21:23:56,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:23:56,971 INFO L93 Difference]: Finished difference Result 34 states and 41 transitions. [2019-11-06 21:23:56,971 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-06 21:23:56,971 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 20 [2019-11-06 21:23:56,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:23:56,972 INFO L225 Difference]: With dead ends: 34 [2019-11-06 21:23:56,972 INFO L226 Difference]: Without dead ends: 0 [2019-11-06 21:23:56,973 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=39, Invalid=116, Unknown=1, NotChecked=0, Total=156 [2019-11-06 21:23:56,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-06 21:23:56,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-06 21:23:56,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-06 21:23:56,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-06 21:23:56,974 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 20 [2019-11-06 21:23:56,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:23:56,974 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-06 21:23:56,974 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-06 21:23:56,975 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-06 21:23:56,975 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-06 21:23:57,175 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:23:57,181 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-06 21:23:57,356 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2019-11-06 21:23:57,356 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-11-06 21:23:57,356 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-06 21:23:57,356 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-11-06 21:23:57,357 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-11-06 21:23:57,357 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-06 21:23:57,357 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 10 25) no Hoare annotation was computed. [2019-11-06 21:23:57,357 INFO L443 ceAbstractionStarter]: For program point L19-2(lines 19 23) no Hoare annotation was computed. [2019-11-06 21:23:57,358 INFO L439 ceAbstractionStarter]: At program point L19-3(lines 19 23) the Hoare annotation is: (or (< (mod main_~v~0 4294967296) 10) (< (mod (+ main_~v~0 4294967295) 4294967296) 10)) [2019-11-06 21:23:57,358 INFO L439 ceAbstractionStarter]: At program point L20-2(lines 20 23) the Hoare annotation is: (or (< (mod main_~v~0 4294967296) 10) (< (mod (+ main_~v~0 4294967295) 4294967296) 10)) [2019-11-06 21:23:57,358 INFO L443 ceAbstractionStarter]: For program point L21-2(line 21) no Hoare annotation was computed. [2019-11-06 21:23:57,358 INFO L439 ceAbstractionStarter]: At program point L21-3(line 21) the Hoare annotation is: (or (and (<= main_~v~0 0) (< 0 (+ (div main_~v~0 4294967296) 1))) (< (mod (+ main_~v~0 4294967295) 4294967296) 10)) [2019-11-06 21:23:57,359 INFO L439 ceAbstractionStarter]: At program point L21-4(line 21) the Hoare annotation is: (and (<= 10 (mod main_~v~0 4294967296)) (< (mod (+ main_~v~0 4294967295) 4294967296) 10)) [2019-11-06 21:23:57,359 INFO L443 ceAbstractionStarter]: For program point L17-2(lines 17 23) no Hoare annotation was computed. [2019-11-06 21:23:57,359 INFO L439 ceAbstractionStarter]: At program point L17-3(lines 17 23) the Hoare annotation is: (or (< (mod main_~v~0 4294967296) 10) (< (mod (+ main_~v~0 4294967295) 4294967296) 10)) [2019-11-06 21:23:57,359 INFO L443 ceAbstractionStarter]: For program point L17-4(lines 17 23) no Hoare annotation was computed. [2019-11-06 21:23:57,359 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 10 25) no Hoare annotation was computed. [2019-11-06 21:23:57,359 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 10 25) the Hoare annotation is: true [2019-11-06 21:23:57,359 INFO L443 ceAbstractionStarter]: For program point L22(lines 20 23) no Hoare annotation was computed. [2019-11-06 21:23:57,360 INFO L443 ceAbstractionStarter]: For program point L18-2(lines 18 23) no Hoare annotation was computed. [2019-11-06 21:23:57,360 INFO L439 ceAbstractionStarter]: At program point L18-3(lines 18 23) the Hoare annotation is: (or (< (mod main_~v~0 4294967296) 10) (< (mod (+ main_~v~0 4294967295) 4294967296) 10)) [2019-11-06 21:23:57,360 INFO L446 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2019-11-06 21:23:57,360 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2019-11-06 21:23:57,360 INFO L443 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2019-11-06 21:23:57,360 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2019-11-06 21:23:57,361 INFO L443 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2019-11-06 21:23:57,361 INFO L443 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2019-11-06 21:23:57,376 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 09:23:57 BoogieIcfgContainer [2019-11-06 21:23:57,376 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-06 21:23:57,378 INFO L168 Benchmark]: Toolchain (without parser) took 8999.23 ms. Allocated memory was 138.4 MB in the beginning and 235.9 MB in the end (delta: 97.5 MB). Free memory was 103.1 MB in the beginning and 160.1 MB in the end (delta: -57.0 MB). Peak memory consumption was 40.6 MB. Max. memory is 7.1 GB. [2019-11-06 21:23:57,379 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 138.4 MB. Free memory was 121.6 MB in the beginning and 121.4 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2019-11-06 21:23:57,380 INFO L168 Benchmark]: CACSL2BoogieTranslator took 249.65 ms. Allocated memory is still 138.4 MB. Free memory was 102.9 MB in the beginning and 93.3 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. [2019-11-06 21:23:57,381 INFO L168 Benchmark]: Boogie Preprocessor took 120.94 ms. Allocated memory was 138.4 MB in the beginning and 202.9 MB in the end (delta: 64.5 MB). Free memory was 93.3 MB in the beginning and 181.1 MB in the end (delta: -87.8 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. [2019-11-06 21:23:57,382 INFO L168 Benchmark]: RCFGBuilder took 264.08 ms. Allocated memory is still 202.9 MB. Free memory was 181.1 MB in the beginning and 168.1 MB in the end (delta: 13.0 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. [2019-11-06 21:23:57,383 INFO L168 Benchmark]: TraceAbstraction took 8360.33 ms. Allocated memory was 202.9 MB in the beginning and 235.9 MB in the end (delta: 33.0 MB). Free memory was 167.5 MB in the beginning and 160.1 MB in the end (delta: 7.4 MB). Peak memory consumption was 40.4 MB. Max. memory is 7.1 GB. [2019-11-06 21:23:57,387 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 138.4 MB. Free memory was 121.6 MB in the beginning and 121.4 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 249.65 ms. Allocated memory is still 138.4 MB. Free memory was 102.9 MB in the beginning and 93.3 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 120.94 ms. Allocated memory was 138.4 MB in the beginning and 202.9 MB in the end (delta: 64.5 MB). Free memory was 93.3 MB in the beginning and 181.1 MB in the end (delta: -87.8 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 264.08 ms. Allocated memory is still 202.9 MB. Free memory was 181.1 MB in the beginning and 168.1 MB in the end (delta: 13.0 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 8360.33 ms. Allocated memory was 202.9 MB in the beginning and 235.9 MB in the end (delta: 33.0 MB). Free memory was 167.5 MB in the beginning and 160.1 MB in the end (delta: 7.4 MB). Peak memory consumption was 40.4 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 - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: (v <= 0 && 0 < v / 4294967296 + 1) || (v + 4294967295) % 4294967296 < 10 - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: v % 4294967296 < 10 || (v + 4294967295) % 4294967296 < 10 - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: v % 4294967296 < 10 || (v + 4294967295) % 4294967296 < 10 - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: v % 4294967296 < 10 || (v + 4294967295) % 4294967296 < 10 - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: v % 4294967296 < 10 || (v + 4294967295) % 4294967296 < 10 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 27 locations, 1 error locations. Result: SAFE, OverallTime: 8.2s, OverallIterations: 5, TraceHistogramMax: 3, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, HoareTripleCheckerStatistics: 131 SDtfs, 80 SDslu, 207 SDs, 0 SdLazy, 79 SolverSat, 13 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 87 GetRequests, 62 SyntacticMatches, 6 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 5.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred 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, 5 MinimizatonAttempts, 24 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 11 LocationsWithAnnotation, 15 PreInvPairs, 28 NumberOfFragments, 89 HoareAnnotationTreeSize, 15 FomulaSimplifications, 28 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 11 FomulaSimplificationsInter, 32 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 6.1s InterpolantComputationTime, 136 NumberOfCodeBlocks, 134 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 128 ConstructedInterpolants, 2 QuantifiedInterpolants, 6262 SizeOfPredicates, 4 NumberOfNonLiveVariables, 141 ConjunctsInSsa, 22 ConjunctsInUnsatCore, 8 InterpolantComputations, 3 PerfectInterpolantSequences, 9/28 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...