/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/loop-invgen/SpamAssassin-loop.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-06 21:22:08,151 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-06 21:22:08,154 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-06 21:22:08,174 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-11-06 21:22:08,200 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-06 21:22:08,202 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-06 21:22:08,204 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-06 21:22:08,206 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-06 21:22:08,207 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-06 21:22:08,208 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-06 21:22:08,210 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-06 21:22:08,215 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-06 21:22:08,219 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-06 21:22:08,223 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-06 21:22:08,225 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-06 21:22:08,226 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-06 21:22:08,228 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-06 21:22:08,239 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-06 21:22:08,240 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-06 21:22:08,241 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-06 21:22:08,241 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 21:22:08,270 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-06 21:22:08,270 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-06 21:22:08,271 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-06 21:22:08,272 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-06 21:22:08,273 INFO L138 SettingsManager]: * Use SBE=true [2019-11-06 21:22:08,273 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-06 21:22:08,273 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-06 21:22:08,273 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-06 21:22:08,274 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-06 21:22:08,274 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-06 21:22:08,274 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-06 21:22:08,274 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-06 21:22:08,274 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-06 21:22:08,275 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-06 21:22:08,275 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-06 21:22:08,275 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-06 21:22:08,275 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-06 21:22:08,275 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-06 21:22:08,276 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-06 21:22:08,276 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-06 21:22:08,276 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-06 21:22:08,276 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 21:22:08,276 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-06 21:22:08,278 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-06 21:22:08,278 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-06 21:22:08,278 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-06 21:22:08,278 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-06 21:22:08,279 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-06 21:22:08,279 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-06 21:22:08,577 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-06 21:22:08,595 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-06 21:22:08,599 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-06 21:22:08,600 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-06 21:22:08,600 INFO L275 PluginConnector]: CDTParser initialized [2019-11-06 21:22:08,601 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/SpamAssassin-loop.i [2019-11-06 21:22:08,673 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2a2dc2530/acd733fb9a064ba5b85dec47db6802ec/FLAG16e66a8be [2019-11-06 21:22:09,121 INFO L306 CDTParser]: Found 1 translation units. [2019-11-06 21:22:09,122 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/SpamAssassin-loop.i [2019-11-06 21:22:09,130 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2a2dc2530/acd733fb9a064ba5b85dec47db6802ec/FLAG16e66a8be [2019-11-06 21:22:09,548 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2a2dc2530/acd733fb9a064ba5b85dec47db6802ec [2019-11-06 21:22:09,557 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-06 21:22:09,558 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-06 21:22:09,559 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-06 21:22:09,559 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-06 21:22:09,566 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-06 21:22:09,567 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:22:09" (1/1) ... [2019-11-06 21:22:09,570 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60ae6286 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:22:09, skipping insertion in model container [2019-11-06 21:22:09,570 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:22:09" (1/1) ... [2019-11-06 21:22:09,577 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-06 21:22:09,593 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-06 21:22:09,779 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 21:22:09,786 INFO L188 MainTranslator]: Completed pre-run [2019-11-06 21:22:09,805 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 21:22:09,818 INFO L192 MainTranslator]: Completed translation [2019-11-06 21:22:09,819 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:22:09 WrapperNode [2019-11-06 21:22:09,819 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-06 21:22:09,821 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-06 21:22:09,821 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-06 21:22:09,821 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-06 21:22:09,907 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:22:09" (1/1) ... [2019-11-06 21:22:09,907 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:22:09" (1/1) ... [2019-11-06 21:22:09,916 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:22:09" (1/1) ... [2019-11-06 21:22:09,917 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:22:09" (1/1) ... [2019-11-06 21:22:09,926 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:22:09" (1/1) ... [2019-11-06 21:22:09,932 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:22:09" (1/1) ... [2019-11-06 21:22:09,933 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:22:09" (1/1) ... [2019-11-06 21:22:09,935 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-06 21:22:09,935 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-06 21:22:09,935 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-06 21:22:09,936 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-06 21:22:09,936 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:22:09" (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 21:22:09,990 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-06 21:22:09,990 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-06 21:22:09,990 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-11-06 21:22:09,991 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-06 21:22:09,991 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-06 21:22:09,991 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-11-06 21:22:09,991 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-11-06 21:22:09,991 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-06 21:22:09,991 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-06 21:22:09,991 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-06 21:22:09,991 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-06 21:22:10,265 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-06 21:22:10,266 INFO L284 CfgBuilder]: Removed 2 assume(true) statements. [2019-11-06 21:22:10,267 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:22:10 BoogieIcfgContainer [2019-11-06 21:22:10,267 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-06 21:22:10,277 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-06 21:22:10,277 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-06 21:22:10,283 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-06 21:22:10,286 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 09:22:09" (1/3) ... [2019-11-06 21:22:10,287 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ff5b3b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:22:10, skipping insertion in model container [2019-11-06 21:22:10,287 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:22:09" (2/3) ... [2019-11-06 21:22:10,287 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ff5b3b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:22:10, skipping insertion in model container [2019-11-06 21:22:10,288 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:22:10" (3/3) ... [2019-11-06 21:22:10,289 INFO L109 eAbstractionObserver]: Analyzing ICFG SpamAssassin-loop.i [2019-11-06 21:22:10,299 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-06 21:22:10,308 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-06 21:22:10,320 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-06 21:22:10,345 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-06 21:22:10,346 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-06 21:22:10,346 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-06 21:22:10,346 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-06 21:22:10,346 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-06 21:22:10,346 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-06 21:22:10,347 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-06 21:22:10,347 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-06 21:22:10,365 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2019-11-06 21:22:10,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-06 21:22:10,370 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:22:10,371 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:22:10,373 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:22:10,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:22:10,379 INFO L82 PathProgramCache]: Analyzing trace with hash 1778619980, now seen corresponding path program 1 times [2019-11-06 21:22:10,385 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:22:10,386 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234619072] [2019-11-06 21:22:10,386 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:22:10,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:22:10,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:22:10,584 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 21:22:10,585 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234619072] [2019-11-06 21:22:10,586 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 21:22:10,586 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-06 21:22:10,588 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320321684] [2019-11-06 21:22:10,594 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-06 21:22:10,594 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:22:10,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-06 21:22:10,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-06 21:22:10,607 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 5 states. [2019-11-06 21:22:10,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:22:10,821 INFO L93 Difference]: Finished difference Result 84 states and 147 transitions. [2019-11-06 21:22:10,822 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-06 21:22:10,823 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2019-11-06 21:22:10,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:22:10,834 INFO L225 Difference]: With dead ends: 84 [2019-11-06 21:22:10,834 INFO L226 Difference]: Without dead ends: 43 [2019-11-06 21:22:10,838 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-06 21:22:10,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2019-11-06 21:22:10,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 41. [2019-11-06 21:22:10,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2019-11-06 21:22:10,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 58 transitions. [2019-11-06 21:22:10,888 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 58 transitions. Word has length 13 [2019-11-06 21:22:10,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:22:10,889 INFO L462 AbstractCegarLoop]: Abstraction has 41 states and 58 transitions. [2019-11-06 21:22:10,889 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-06 21:22:10,890 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 58 transitions. [2019-11-06 21:22:10,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-06 21:22:10,891 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:22:10,892 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:22:10,892 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:22:10,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:22:10,893 INFO L82 PathProgramCache]: Analyzing trace with hash 1756664013, now seen corresponding path program 1 times [2019-11-06 21:22:10,893 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:22:10,893 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396903929] [2019-11-06 21:22:10,894 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:22:10,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:22:10,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:22:10,957 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 21:22:10,959 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396903929] [2019-11-06 21:22:10,959 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 21:22:10,960 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-06 21:22:10,960 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362735296] [2019-11-06 21:22:10,963 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-06 21:22:10,963 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:22:10,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-06 21:22:10,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-06 21:22:10,965 INFO L87 Difference]: Start difference. First operand 41 states and 58 transitions. Second operand 5 states. [2019-11-06 21:22:11,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:22:11,110 INFO L93 Difference]: Finished difference Result 56 states and 75 transitions. [2019-11-06 21:22:11,111 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-06 21:22:11,111 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2019-11-06 21:22:11,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:22:11,114 INFO L225 Difference]: With dead ends: 56 [2019-11-06 21:22:11,114 INFO L226 Difference]: Without dead ends: 54 [2019-11-06 21:22:11,115 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-06 21:22:11,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2019-11-06 21:22:11,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 50. [2019-11-06 21:22:11,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2019-11-06 21:22:11,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 66 transitions. [2019-11-06 21:22:11,133 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 66 transitions. Word has length 13 [2019-11-06 21:22:11,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:22:11,134 INFO L462 AbstractCegarLoop]: Abstraction has 50 states and 66 transitions. [2019-11-06 21:22:11,134 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-06 21:22:11,134 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 66 transitions. [2019-11-06 21:22:11,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-11-06 21:22:11,135 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:22:11,135 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:22:11,135 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:22:11,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:22:11,136 INFO L82 PathProgramCache]: Analyzing trace with hash -276218857, now seen corresponding path program 1 times [2019-11-06 21:22:11,136 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:22:11,136 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183262775] [2019-11-06 21:22:11,137 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:22:11,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:22:11,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:22:11,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:22:11,195 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:22:11,195 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183262775] [2019-11-06 21:22:11,196 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 21:22:11,196 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-06 21:22:11,196 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97710105] [2019-11-06 21:22:11,197 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-06 21:22:11,197 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:22:11,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-06 21:22:11,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-06 21:22:11,198 INFO L87 Difference]: Start difference. First operand 50 states and 66 transitions. Second operand 5 states. [2019-11-06 21:22:11,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:22:11,348 INFO L93 Difference]: Finished difference Result 56 states and 71 transitions. [2019-11-06 21:22:11,349 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-06 21:22:11,349 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2019-11-06 21:22:11,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:22:11,352 INFO L225 Difference]: With dead ends: 56 [2019-11-06 21:22:11,352 INFO L226 Difference]: Without dead ends: 54 [2019-11-06 21:22:11,353 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-06 21:22:11,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2019-11-06 21:22:11,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2019-11-06 21:22:11,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2019-11-06 21:22:11,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 69 transitions. [2019-11-06 21:22:11,376 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 69 transitions. Word has length 18 [2019-11-06 21:22:11,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:22:11,377 INFO L462 AbstractCegarLoop]: Abstraction has 54 states and 69 transitions. [2019-11-06 21:22:11,377 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-06 21:22:11,377 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 69 transitions. [2019-11-06 21:22:11,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-11-06 21:22:11,379 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:22:11,379 INFO L410 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:22:11,380 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:22:11,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:22:11,381 INFO L82 PathProgramCache]: Analyzing trace with hash -12086036, now seen corresponding path program 1 times [2019-11-06 21:22:11,381 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:22:11,381 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434822136] [2019-11-06 21:22:11,381 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:22:11,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:22:11,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:22:11,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:22:11,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:22:11,502 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-11-06 21:22:11,503 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434822136] [2019-11-06 21:22:11,503 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 21:22:11,503 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-06 21:22:11,503 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613414431] [2019-11-06 21:22:11,504 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-06 21:22:11,504 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:22:11,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-06 21:22:11,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-06 21:22:11,505 INFO L87 Difference]: Start difference. First operand 54 states and 69 transitions. Second operand 6 states. [2019-11-06 21:22:11,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:22:11,679 INFO L93 Difference]: Finished difference Result 60 states and 74 transitions. [2019-11-06 21:22:11,681 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-06 21:22:11,681 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 23 [2019-11-06 21:22:11,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:22:11,683 INFO L225 Difference]: With dead ends: 60 [2019-11-06 21:22:11,683 INFO L226 Difference]: Without dead ends: 58 [2019-11-06 21:22:11,683 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-11-06 21:22:11,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2019-11-06 21:22:11,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2019-11-06 21:22:11,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2019-11-06 21:22:11,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 72 transitions. [2019-11-06 21:22:11,707 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 72 transitions. Word has length 23 [2019-11-06 21:22:11,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:22:11,707 INFO L462 AbstractCegarLoop]: Abstraction has 58 states and 72 transitions. [2019-11-06 21:22:11,708 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-06 21:22:11,708 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 72 transitions. [2019-11-06 21:22:11,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2019-11-06 21:22:11,709 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:22:11,709 INFO L410 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:22:11,710 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:22:11,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:22:11,710 INFO L82 PathProgramCache]: Analyzing trace with hash -1403678473, now seen corresponding path program 1 times [2019-11-06 21:22:11,710 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:22:11,711 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649771581] [2019-11-06 21:22:11,711 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:22:11,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:22:11,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:22:11,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:22:11,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:22:11,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:22:11,783 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-11-06 21:22:11,783 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649771581] [2019-11-06 21:22:11,784 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 21:22:11,784 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-06 21:22:11,784 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159244788] [2019-11-06 21:22:11,785 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-06 21:22:11,785 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:22:11,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-06 21:22:11,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-06 21:22:11,786 INFO L87 Difference]: Start difference. First operand 58 states and 72 transitions. Second operand 5 states. [2019-11-06 21:22:11,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:22:11,891 INFO L93 Difference]: Finished difference Result 65 states and 78 transitions. [2019-11-06 21:22:11,891 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-06 21:22:11,891 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 28 [2019-11-06 21:22:11,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:22:11,892 INFO L225 Difference]: With dead ends: 65 [2019-11-06 21:22:11,893 INFO L226 Difference]: Without dead ends: 63 [2019-11-06 21:22:11,893 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-06 21:22:11,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2019-11-06 21:22:11,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 62. [2019-11-06 21:22:11,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2019-11-06 21:22:11,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 75 transitions. [2019-11-06 21:22:11,905 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 75 transitions. Word has length 28 [2019-11-06 21:22:11,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:22:11,906 INFO L462 AbstractCegarLoop]: Abstraction has 62 states and 75 transitions. [2019-11-06 21:22:11,906 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-06 21:22:11,906 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 75 transitions. [2019-11-06 21:22:11,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2019-11-06 21:22:11,908 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:22:11,908 INFO L410 BasicCegarLoop]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:22:11,908 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:22:11,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:22:11,909 INFO L82 PathProgramCache]: Analyzing trace with hash -869865180, now seen corresponding path program 1 times [2019-11-06 21:22:11,909 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:22:11,909 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396607791] [2019-11-06 21:22:11,909 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:22:11,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:22:11,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:22:11,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:22:12,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:22:12,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:22:12,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:22:12,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:22:12,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:22:12,068 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2019-11-06 21:22:12,068 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396607791] [2019-11-06 21:22:12,068 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 21:22:12,069 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-06 21:22:12,070 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828065612] [2019-11-06 21:22:12,071 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-06 21:22:12,071 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:22:12,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-06 21:22:12,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-11-06 21:22:12,072 INFO L87 Difference]: Start difference. First operand 62 states and 75 transitions. Second operand 6 states. [2019-11-06 21:22:12,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:22:12,231 INFO L93 Difference]: Finished difference Result 74 states and 90 transitions. [2019-11-06 21:22:12,233 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-06 21:22:12,233 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 46 [2019-11-06 21:22:12,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:22:12,234 INFO L225 Difference]: With dead ends: 74 [2019-11-06 21:22:12,236 INFO L226 Difference]: Without dead ends: 72 [2019-11-06 21:22:12,236 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2019-11-06 21:22:12,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2019-11-06 21:22:12,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 66. [2019-11-06 21:22:12,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2019-11-06 21:22:12,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 78 transitions. [2019-11-06 21:22:12,256 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 78 transitions. Word has length 46 [2019-11-06 21:22:12,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:22:12,256 INFO L462 AbstractCegarLoop]: Abstraction has 66 states and 78 transitions. [2019-11-06 21:22:12,256 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-06 21:22:12,256 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 78 transitions. [2019-11-06 21:22:12,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2019-11-06 21:22:12,261 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:22:12,261 INFO L410 BasicCegarLoop]: trace histogram [9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:22:12,266 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:22:12,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:22:12,266 INFO L82 PathProgramCache]: Analyzing trace with hash -863098428, now seen corresponding path program 1 times [2019-11-06 21:22:12,267 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:22:12,267 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867102748] [2019-11-06 21:22:12,267 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:22:12,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:22:12,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:22:12,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:22:12,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:22:12,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:22:12,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:22:12,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:22:12,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:22:12,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:22:12,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:22:12,407 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2019-11-06 21:22:12,407 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867102748] [2019-11-06 21:22:12,408 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 21:22:12,408 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-06 21:22:12,408 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216453979] [2019-11-06 21:22:12,409 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-06 21:22:12,409 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:22:12,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-06 21:22:12,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-11-06 21:22:12,411 INFO L87 Difference]: Start difference. First operand 66 states and 78 transitions. Second operand 7 states. [2019-11-06 21:22:12,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:22:12,594 INFO L93 Difference]: Finished difference Result 74 states and 86 transitions. [2019-11-06 21:22:12,594 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-06 21:22:12,594 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 56 [2019-11-06 21:22:12,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:22:12,596 INFO L225 Difference]: With dead ends: 74 [2019-11-06 21:22:12,596 INFO L226 Difference]: Without dead ends: 72 [2019-11-06 21:22:12,597 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2019-11-06 21:22:12,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2019-11-06 21:22:12,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 70. [2019-11-06 21:22:12,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2019-11-06 21:22:12,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 81 transitions. [2019-11-06 21:22:12,609 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 81 transitions. Word has length 56 [2019-11-06 21:22:12,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:22:12,610 INFO L462 AbstractCegarLoop]: Abstraction has 70 states and 81 transitions. [2019-11-06 21:22:12,610 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-06 21:22:12,610 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 81 transitions. [2019-11-06 21:22:12,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2019-11-06 21:22:12,612 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:22:12,612 INFO L410 BasicCegarLoop]: trace histogram [11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:22:12,613 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:22:12,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:22:12,613 INFO L82 PathProgramCache]: Analyzing trace with hash -1349635161, now seen corresponding path program 1 times [2019-11-06 21:22:12,613 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:22:12,614 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716549006] [2019-11-06 21:22:12,614 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:22:12,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:22:12,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:22:12,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:22:12,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:22:12,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:22:12,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:22:12,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:22:12,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:22:12,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:22:12,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:22:12,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:22:12,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:22:12,744 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2019-11-06 21:22:12,745 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716549006] [2019-11-06 21:22:12,745 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 21:22:12,745 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-11-06 21:22:12,745 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87140973] [2019-11-06 21:22:12,746 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-06 21:22:12,746 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:22:12,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-06 21:22:12,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-11-06 21:22:12,747 INFO L87 Difference]: Start difference. First operand 70 states and 81 transitions. Second operand 8 states. [2019-11-06 21:22:12,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:22:12,939 INFO L93 Difference]: Finished difference Result 72 states and 84 transitions. [2019-11-06 21:22:12,939 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-06 21:22:12,939 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 67 [2019-11-06 21:22:12,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:22:12,940 INFO L225 Difference]: With dead ends: 72 [2019-11-06 21:22:12,940 INFO L226 Difference]: Without dead ends: 0 [2019-11-06 21:22:12,942 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2019-11-06 21:22:12,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-06 21:22:12,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-06 21:22:12,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-06 21:22:12,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-06 21:22:12,943 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 67 [2019-11-06 21:22:12,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:22:12,943 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-06 21:22:12,943 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-06 21:22:12,945 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-06 21:22:12,945 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-06 21:22:12,950 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-06 21:22:13,329 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2019-11-06 21:22:13,330 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-11-06 21:22:13,330 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-06 21:22:13,330 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-11-06 21:22:13,330 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-11-06 21:22:13,330 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-06 21:22:13,331 INFO L439 ceAbstractionStarter]: At program point L27(line 27) the Hoare annotation is: (and (<= 0 main_~j~0) (<= 0 main_~i~0) (<= (+ main_~i~0 2) main_~len~0) (<= (+ main_~j~0 5) main_~bufsize~0) (<= (+ main_~limit~0 4) main_~bufsize~0)) [2019-11-06 21:22:13,331 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 10 53) no Hoare annotation was computed. [2019-11-06 21:22:13,331 INFO L439 ceAbstractionStarter]: At program point L23(line 23) the Hoare annotation is: (and (<= 0 main_~j~0) (<= 0 main_~i~0) (<= (+ main_~i~0 2) main_~len~0) (<= (+ main_~j~0 5) main_~bufsize~0) (<= (+ main_~limit~0 4) main_~bufsize~0)) [2019-11-06 21:22:13,331 INFO L439 ceAbstractionStarter]: At program point L23-1(line 23) the Hoare annotation is: (and (<= 0 main_~j~0) (<= 0 main_~i~0) (<= (+ main_~i~0 2) main_~len~0) (<= (+ main_~j~0 5) main_~bufsize~0) (<= (+ main_~limit~0 4) main_~bufsize~0)) [2019-11-06 21:22:13,332 INFO L439 ceAbstractionStarter]: At program point L44(line 44) the Hoare annotation is: (and (<= 0 main_~j~0) (<= 0 main_~i~0) (<= (+ main_~i~0 1) main_~len~0) (<= (+ main_~j~0 5) main_~bufsize~0) (<= (+ main_~limit~0 4) main_~bufsize~0)) [2019-11-06 21:22:13,332 INFO L439 ceAbstractionStarter]: At program point L32(line 32) the Hoare annotation is: (and (<= 0 main_~j~0) (<= 0 main_~i~0) (<= (+ main_~i~0 1) main_~len~0) (<= (+ main_~j~0 4) main_~bufsize~0) (<= (+ main_~limit~0 4) main_~bufsize~0)) [2019-11-06 21:22:13,332 INFO L439 ceAbstractionStarter]: At program point L32-1(line 32) the Hoare annotation is: (and (<= 0 main_~j~0) (<= 0 main_~i~0) (<= (+ main_~i~0 1) main_~len~0) (<= (+ main_~j~0 4) main_~bufsize~0) (<= (+ main_~limit~0 4) main_~bufsize~0)) [2019-11-06 21:22:13,332 INFO L439 ceAbstractionStarter]: At program point L28(line 28) the Hoare annotation is: (and (<= 0 main_~j~0) (<= 0 main_~i~0) (<= (+ main_~i~0 2) main_~len~0) (<= (+ main_~j~0 5) main_~bufsize~0) (<= (+ main_~limit~0 4) main_~bufsize~0)) [2019-11-06 21:22:13,333 INFO L443 ceAbstractionStarter]: For program point L24(line 24) no Hoare annotation was computed. [2019-11-06 21:22:13,333 INFO L439 ceAbstractionStarter]: At program point L20-2(lines 20 51) the Hoare annotation is: (and (<= 0 main_~i~0) (<= (+ main_~limit~0 4) main_~bufsize~0)) [2019-11-06 21:22:13,333 INFO L443 ceAbstractionStarter]: For program point L20-3(lines 20 51) no Hoare annotation was computed. [2019-11-06 21:22:13,333 INFO L439 ceAbstractionStarter]: At program point L45(line 45) the Hoare annotation is: (and (<= 0 main_~j~0) (<= 0 main_~i~0) (<= (+ main_~i~0 1) main_~len~0) (<= (+ main_~j~0 5) main_~bufsize~0) (<= (+ main_~limit~0 4) main_~bufsize~0)) [2019-11-06 21:22:13,333 INFO L439 ceAbstractionStarter]: At program point L33(line 33) the Hoare annotation is: (and (<= 0 main_~j~0) (<= 0 main_~i~0) (<= (+ main_~i~0 1) main_~len~0) (<= (+ main_~j~0 4) main_~bufsize~0) (<= (+ main_~limit~0 4) main_~bufsize~0)) [2019-11-06 21:22:13,333 INFO L443 ceAbstractionStarter]: For program point L29(line 29) no Hoare annotation was computed. [2019-11-06 21:22:13,334 INFO L443 ceAbstractionStarter]: For program point L25(line 25) no Hoare annotation was computed. [2019-11-06 21:22:13,334 INFO L439 ceAbstractionStarter]: At program point L21-2(lines 21 50) the Hoare annotation is: (and (<= 0 main_~j~0) (<= 0 main_~i~0) (<= (+ main_~limit~0 4) main_~bufsize~0)) [2019-11-06 21:22:13,334 INFO L443 ceAbstractionStarter]: For program point L17(line 17) no Hoare annotation was computed. [2019-11-06 21:22:13,335 INFO L443 ceAbstractionStarter]: For program point L46(line 46) no Hoare annotation was computed. [2019-11-06 21:22:13,338 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 10 53) no Hoare annotation was computed. [2019-11-06 21:22:13,338 INFO L439 ceAbstractionStarter]: At program point L42(lines 22 49) the Hoare annotation is: (and (<= 0 main_~j~0) (<= 0 main_~i~0) (<= (+ main_~i~0 1) main_~len~0) (<= (+ main_~j~0 5) main_~bufsize~0) (<= (+ main_~limit~0 4) main_~bufsize~0)) [2019-11-06 21:22:13,339 INFO L439 ceAbstractionStarter]: At program point L38(line 38) the Hoare annotation is: (and (<= 0 main_~j~0) (<= (+ main_~j~0 3) main_~bufsize~0) (<= 0 main_~i~0) (<= (+ main_~limit~0 4) main_~bufsize~0)) [2019-11-06 21:22:13,339 INFO L439 ceAbstractionStarter]: At program point L38-1(line 38) the Hoare annotation is: (and (<= 0 main_~j~0) (<= (+ main_~j~0 3) main_~bufsize~0) (<= 0 main_~i~0) (<= (+ main_~limit~0 4) main_~bufsize~0)) [2019-11-06 21:22:13,339 INFO L439 ceAbstractionStarter]: At program point L34(line 34) the Hoare annotation is: (and (<= 0 main_~j~0) (<= 0 main_~i~0) (<= (+ main_~i~0 1) main_~len~0) (<= (+ main_~j~0 4) main_~bufsize~0) (<= (+ main_~limit~0 4) main_~bufsize~0)) [2019-11-06 21:22:13,339 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 10 53) the Hoare annotation is: true [2019-11-06 21:22:13,340 INFO L439 ceAbstractionStarter]: At program point L26(line 26) the Hoare annotation is: (and (<= 0 main_~j~0) (<= 0 main_~i~0) (<= (+ main_~i~0 2) main_~len~0) (<= (+ main_~j~0 5) main_~bufsize~0) (<= (+ main_~limit~0 4) main_~bufsize~0)) [2019-11-06 21:22:13,346 INFO L439 ceAbstractionStarter]: At program point L26-1(line 26) the Hoare annotation is: (and (<= 0 main_~j~0) (<= 0 main_~i~0) (<= (+ main_~i~0 2) main_~len~0) (<= (+ main_~j~0 5) main_~bufsize~0) (<= (+ main_~limit~0 4) main_~bufsize~0)) [2019-11-06 21:22:13,347 INFO L443 ceAbstractionStarter]: For program point L22(lines 22 49) no Hoare annotation was computed. [2019-11-06 21:22:13,347 INFO L439 ceAbstractionStarter]: At program point L43(line 43) the Hoare annotation is: (and (<= 0 main_~j~0) (<= 0 main_~i~0) (<= (+ main_~i~0 1) main_~len~0) (<= (+ main_~j~0 5) main_~bufsize~0) (<= (+ main_~limit~0 4) main_~bufsize~0)) [2019-11-06 21:22:13,347 INFO L443 ceAbstractionStarter]: For program point L39(line 39) no Hoare annotation was computed. [2019-11-06 21:22:13,347 INFO L443 ceAbstractionStarter]: For program point L35(line 35) no Hoare annotation was computed. [2019-11-06 21:22:13,347 INFO L446 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2019-11-06 21:22:13,348 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2019-11-06 21:22:13,348 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2019-11-06 21:22:13,348 INFO L443 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2019-11-06 21:22:13,348 INFO L443 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2019-11-06 21:22:13,349 INFO L443 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2019-11-06 21:22:13,368 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 09:22:13 BoogieIcfgContainer [2019-11-06 21:22:13,368 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-06 21:22:13,371 INFO L168 Benchmark]: Toolchain (without parser) took 3811.68 ms. Allocated memory was 138.9 MB in the beginning and 245.9 MB in the end (delta: 107.0 MB). Free memory was 103.5 MB in the beginning and 137.0 MB in the end (delta: -33.4 MB). Peak memory consumption was 73.5 MB. Max. memory is 7.1 GB. [2019-11-06 21:22:13,372 INFO L168 Benchmark]: CDTParser took 0.39 ms. Allocated memory is still 138.9 MB. Free memory was 122.2 MB in the beginning and 122.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-11-06 21:22:13,373 INFO L168 Benchmark]: CACSL2BoogieTranslator took 260.28 ms. Allocated memory is still 138.9 MB. Free memory was 103.3 MB in the beginning and 93.3 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. [2019-11-06 21:22:13,374 INFO L168 Benchmark]: Boogie Preprocessor took 114.23 ms. Allocated memory was 138.9 MB in the beginning and 202.4 MB in the end (delta: 63.4 MB). Free memory was 93.3 MB in the beginning and 180.3 MB in the end (delta: -87.0 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. [2019-11-06 21:22:13,375 INFO L168 Benchmark]: RCFGBuilder took 332.09 ms. Allocated memory is still 202.4 MB. Free memory was 180.3 MB in the beginning and 165.5 MB in the end (delta: 14.9 MB). Peak memory consumption was 14.9 MB. Max. memory is 7.1 GB. [2019-11-06 21:22:13,376 INFO L168 Benchmark]: TraceAbstraction took 3091.67 ms. Allocated memory was 202.4 MB in the beginning and 245.9 MB in the end (delta: 43.5 MB). Free memory was 164.8 MB in the beginning and 137.0 MB in the end (delta: 27.8 MB). Peak memory consumption was 71.3 MB. Max. memory is 7.1 GB. [2019-11-06 21:22:13,380 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.39 ms. Allocated memory is still 138.9 MB. Free memory was 122.2 MB in the beginning and 122.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 260.28 ms. Allocated memory is still 138.9 MB. Free memory was 103.3 MB in the beginning and 93.3 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 114.23 ms. Allocated memory was 138.9 MB in the beginning and 202.4 MB in the end (delta: 63.4 MB). Free memory was 93.3 MB in the beginning and 180.3 MB in the end (delta: -87.0 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 332.09 ms. Allocated memory is still 202.4 MB. Free memory was 180.3 MB in the beginning and 165.5 MB in the end (delta: 14.9 MB). Peak memory consumption was 14.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3091.67 ms. Allocated memory was 202.4 MB in the beginning and 245.9 MB in the end (delta: 43.5 MB). Free memory was 164.8 MB in the beginning and 137.0 MB in the end (delta: 27.8 MB). Peak memory consumption was 71.3 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: 20]: Loop Invariant Derived loop invariant: 0 <= i && limit + 4 <= bufsize - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: (0 <= j && 0 <= i) && limit + 4 <= bufsize - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: (((0 <= j && 0 <= i) && i + 1 <= len) && j + 5 <= bufsize) && limit + 4 <= bufsize - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 42 locations, 1 error locations. Result: SAFE, OverallTime: 3.0s, OverallIterations: 8, TraceHistogramMax: 11, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, HoareTripleCheckerStatistics: 395 SDtfs, 102 SDslu, 1026 SDs, 0 SdLazy, 528 SolverSat, 134 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 138 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=70occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 15 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 23 LocationsWithAnnotation, 55 PreInvPairs, 76 NumberOfFragments, 369 HoareAnnotationTreeSize, 55 FomulaSimplifications, 621 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 23 FomulaSimplificationsInter, 43 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 264 NumberOfCodeBlocks, 264 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 256 ConstructedInterpolants, 0 QuantifiedInterpolants, 23798 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 428/428 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...